Toshiba Ras 16gavp E User Manual

FILE NO. A05-008

SERVICE MANUAL

SPLIT TYPE

Indoor Unit

Outdoor Unit

RAS-B10GKVP-E RAS-10GAVP-E

RAS-B13GKVP-E RAS-13GAVP-E

RAS-B16GKVP-E RAS-16GAVP-E

R410A

PRINTED IN JAPAN, Nov.,2005 ToMo

1. SAFETY PRECAUTIONS

For general public use

Power supply cord of outdoor unit shall be more than 1.5 mm 2 (H07RN-F or 245IEC66) polychloroprene

sheathed flexible cord.

• Read this “SAFETY PRECAUTIONS” carefully before servicing.

• The precautions described below include the important items regarding safety. Observe them without fail.

• After the servicing work, perform a trial operation to check for any problem.

• Turn off the main power supply switch (or breaker) before the unit maintenance.

CAUTION

New Refrigerant Air Conditioner Installation

• THIS AIR CONDITIONER ADOPTS THE NEW HFC REFRIGERANT (R410A) WHICH DOES NOT

DESTROY OZONE LAYER.

R410A refrigerant is apt to be affected by impurities such as water, oxidizing membrane, and oils because

the working pressure of R410A refrigerant is approx. 1.6 times of refrigerant R22. Accompanied with the

adoption of the new refrigerant, the refrigeration machine oil has also been changed.Therefore, during

installation work, be sure that water, dust, former refrigerant, or refrigeration machine oil does not enter into

the new type refrigerant R410A air conditioner circuit.

To prevent mixing of refrigerant or refrigerating machine oil, the sizes of connecting sections of charging

port on main unit and installation tools are different from those used for the conventional refrigerant units.

Accordingly, special tools are required for the new refrigerant (R410A) units. For connecting pipes, use new

and clean piping materials with high pressure fittings made for R410A only, so that water and/or dust does

not enter. Moreover, do not use the existing piping because there are some problems with pressure fittings

and possible impurities in existing piping.

CAUTION

TO DISCONNECT THE APPLIANCE FROM THE MAIN POWER SUPPLY

This appliance must be connected to the main power supply by a circuit breaker or a switch with a contact

separation of at least 3 mm.

The installation fuse (25A D type

) must be used for the power supply line of this air conditioner.

DANGER

• ASK AN AUTHORIZED DEALER OR QUALIFIED INSTALLATION PROFESSIONAL TO IN-

STALL/MAINTAIN THE AIR CONDITIONER.

INAPPROPRIATE SERVICING MAY RESULT IN WATER LEAKAGE, ELECTRIC SHOCK OR FIRE.

• TURN OFF MAIN POWER SUPPLY BEFORE ATTEMPTING ANY ELECTRICAL WORK. MAKE SURE

ALL POWER SWITCHES ARE OFF. FAILURE TO DO SO MAY CAUSE ELECTRIC SHOCK.

DANGER: HIGH VOLTAGE

The high voltage circuit is incorporated.

Be careful to do the check service, as the electric shock may be caused in case of touching parts

on the P.C. board by hand.

• CORRECTLY CONNECT THE CONNECTING CABLE. IF THE CONNECTING CABLE IS INCOR-

RECTLY CONNECTED, ELECTRIC PARTS MAY BE DAMAGED.

• CHECK THAT THE EARTH WIRE IS NOT BROKEN OR DISCONNECTED BEFORE SERVICE AND

INSTALLATION. FAILURE TO DO SO MAY CAUSE ELECTRIC SHOCK.

– 3 –

• DO NOT INSTALL NEAR CONCENTRATIONS OF COMBUSTIBLE GAS OR GAS VAPORS. FAILURE

TO FOLLOW THIS INSTRUCTION CAN RESULT IN FIRE OR EXPLOSION.

• TO PREVENT THE INDOOR UNIT FROM OVERHEATING AND CAUSING A FIRE HAZARD, PLACE

THE UNIT WELL AWAY (MORE THAN 2 M) FROM HEAT SOURCES SUCH AS RADIATORS, HEAT

REGISTORS, FURNACE, STOVES, ETC.

• WHEN MOVING THE AIR-CONDITIONER FOR INSTALLATION IN ANOTHER PLACE, BE VERY CARE-

FUL NOT TO ALLOW THE SPECIFIED REFRIGERANT (R410A) TO BECOME MIXED WITH ANY

OTHER GASEOUS BODY INTO THE REFRIGERATION CIRCUIT. IF AIR OR ANY OTHER GAS IS

MIXED IN THE REFRIGERANT, THE GAS PRESSURE IN THE REFRIGERATION CIRCUIT WILL

BECOME ABNORMALLY HIGH AND IT MAY RESULT IN THE PIPE BURSTING AND POSSIBLE PER-

SONNEL INJURIES.

• IN THE EVENT THAT THE REFRIGERANT GAS LEAKS OUT OF THE PIPE DURING THE SERVICE

WORK AND THE INSTALLATION WORK, IMMEDIATELY LET FRESH AIR INTO THE ROOM. IF THE

REFRIGERANT GAS IS HEATED, SUCH AS BY FIRE, GENERATION OF POISONOUS GAS MAY

RESULT.

WARNING

• Never modify this unit by removing any of the safety guards or bypass any of the safety interlock

switches.

• Do not install in a place which cannot bear the weight of the unit. Personal injury and property

damage can result if the unit falls.

• After the installation work, confirm that refrigerant gas does not leak.

If refrigerant gas leaks into the room and flows near a fire source, such as a cooking range, noxious gas

may generate.

• The electrical work must be performed by a qualified electrician in accordance with the Installation

Manual. Make sure the air conditioner uses an exclusive circuit.

An insufficient circuit capacity or inappropriate installation may cause fire.

• When wiring, use the specified cables and connect the terminals securely to prevent external

forces applied to the cable from affecting the terminals.

• Be sure to provide grounding.

Do not connect ground wires to gas pipes, water pipes, lightning rods or ground wires for telephone cables.

• Conform to the regulations of the local electric company when wiring the power supply.

Inappropriate grounding may cause electric shock.

CAUTION

• Exposure of unit to water or other moisture before installation may result in an electrical short.

Do not store in a wet basement or expose to rain or water.

• Do not install in a place that can increase the vibration of the unit. Do not install in a place that can amplify

the noise level of the unit or where noise or discharged air might disturb neighbors.

• To avoid personal injury, be careful when handling parts with sharp edges.

• Perform the specified installation work to guard against an earthquake.

If the air conditioner is not installed appropriately, accidents may occur due to the falling unit.

For Reference:

If a heating operation would be continuously performed for a long time under the condition that the outdoor

temperature is 0°C or lower, drainage of defrosted water may be difficult due to freezing of the bottom plate,

resulting in a trouble of the cabinet or fan.

It is recommended to procure an antifreeze heater locally for a safe installation of the air conditioner.

For details, contact the dealer.

– 4 –

2. SPECIFICATIONS

2-1. Specifications

RAS-B10GKVP-E/RAS-B13GKVP-E/RAS-B16GKVP-E, RAS-10GAVP-E/RAS-13GAVP-E/RAS-16GAVP-E

Indoor

Outdoor

RAS-B10GKVP-E

RAS-10GAVP-E

2.5

RAS-B13GKVP-E

RAS-13GAVP-E

3.5

RAS-B16GKVP-E

RAS-16GAVP-E

4.5

Unit model

Cooling capacity

(kW)

Cooling capacity range

Heating capacity

Heating capacity range

Power supply

0.5–3.5

3.2

0.6–5.8

0.6–4.5

4.2

0.6–6.6

0.8–5.0

5.5

0.8–7.8

1 Ph/50Hz/220–240 V, 1 Ph/60Hz/220 V

Operation mode

Running current

Power consumption

Power factor

Operation mode

Running current

Power consumption

Power factor

Cooling

0.15

Cooling

Heating

0.15

Heating

Cooling

0.15

Cooling

Heating

0.15

Heating

Cooling

0.15

Cooling

Heating

0.15

Heating

(A)

(W)

(%)

Indoor

Electric

characteristics

(A) 2.48/2.37/2.26 3.25/3.10/2.96 4.25/4.06/3.89 4.52/4.31/4.13 6.45/6.17/5.90 7.07/6.76/6.47

Outdoor

(W)

(%)

(A)

520

3.40/3.25/3.11

680

890

4.67/4.46/4.28

945

1350

7.22/6.91/6.62

1480

Starting current

COP

(Cooling/Heating)

4.55/4.51

3.80/4.31

3.26/3.64

High

(Cooling/Heating) (dB•A)

42/43

43/44

45/45

Indoor

Medium (Cooling/Heating) (dB•A)

33/34

27/27

34/35

27/27

36/36

29/29

Operating

noise

Low

(Cooling/Heating) (dB•A)

Outdoor

(Cooling/Heating) (dB•A)

46/47

48/50

49/50

Unit model

RAS-B10GKVP-E

RAS-B13GKVP-E

RAS-B16GKVP-E

Height

(mm)

250

Dimension Width

Depth

(mm)

790

215

790

215

790

215

Indoor unit

Net weight

(kg)

(W)

Fan motor output

Air flow rate

Unit model

Height

Dimension Width

Depth

(Cooling/Heating) (m³/h)

550/610

RAS-10GAVP-E

560/640

RAS-13GAVP-E

640/660

RAS-16GAVP-E

(mm)

(kg)

550

780

290

550

780

290

550

780

290

Net weight

Outdoor unit

Motor output

(W)

750

Compressor Type

Model

Twin rotary type with DC-inverter variable speed control

DA111A1F-20F1

Fan motor output

Air flow rate

Type

(W)

2150/2150

Flare connection

Ø6.35

Ø9.52

Ø6.35

Ø9.52

2410/2410

Flare connection

Ø6.35

Ø12.7

Ø6.35

Ø12.7

(Cooling/Heating) (m³/h)

2410/2410

Flare connection

Liquid side

Gas side

Ø6.35

Ø9.52

Ø6.35

Ø9.52

R410A

Indoor unit

Liquid side

Gas side

Piping

connection

Outdoor unit

Maximum length

Maximum chargeless length

Maximum height difference

Name of refrigerant

Weight

(m)

R410A

0.82

R410A

0.96

Refrigerant

(kg)

0.96

Power supply

3 Wires : includes earth (Outdoor)

Wiring

connection

Interconnection

4 Wires : includes earth

Indoor (Cooling/Heating) (°C)

Outdoor (Cooling/Heating) (°C)

Installation plate

21–32/0–28

5–43/–15–24

21–32/0–28

5–43/–15–24

21–32/0–28

5–43/–15–24

Usable temperature range

Wireless remote controller

Batteries

Remote controller holder

Zeolite-plus filter

Indoor unit

Accessory

Mounting screw

Remote controller holder

mounting screw

6 (Ø4 × 25L)

2 (Ø3.1 × 16L)

Plasma pure filter

Installation manual

Owner’s manual

Drain nipple

Outdoor unit

Water-proof rubber cap

• The specifications may be subject to change without notice for purpose of improvement.

– 5 –

2-2. Operation Characteristic Curve

RAS-B10GKVP-E

RAS-B13GKVP-E

RAS-B16GKVP-E

RAS-B10GKVP-E

RAS-B13GKVP-E

RAS-B16GKVP-E

• Conditions

Indoor : DB 20˚C

Indoor : DB 27˚C/WB 19˚C

Outdoor : DB 35˚C

Air flow : High

Outdoor : DB 7˚C/WB 6˚C

Air flow : High

Pipe length : 7.5m

Voltage : 230V

Pipe length : 7.5m

Voltage : 230V

100

120

140

100

120

140

Compressor speed (rps)

2-3. Capacity Variation Ratio According toTemperature

120

110

100

RAS-B10GKVP-E

RAS-B13GKVP-E

RAS-B16GKVP-E

RAS-B10GKVP-E

RAS-B13GKVP-E

RAS-B16GKVP-E

• Conditions

Indoor : DB 20˚C

Indoor air flow : High

Pipe length : 7.5m

Indoor : DB27˚C/WB19˚C

Indoor air flow : High

Pipe length : 7.5m

–15

–10

–5

33 34 35 36 37 38 39 40 41 42 43 44 45 46

Outdoor temp. (˚C)

Capacity ratio :100% = 2.5 kW (RAS-B10GKVP-E)

3.5 kW (RAS-B13GKVP-E)

4.5 kW (RAS-B16GKVP-E)

– 6 –

3. REFRIGERANT R410A

This air conditioner adopts the new refrigerant HFC

(R410A) which does not damage the ozone layer.

6. When an air conditioning system charged with a

large volume of refrigerant is installed in a small

room, it is necessary to exercise care so that,

even when refrigerant leaks, its concentration

does not exceed the marginal level.

The working pressure of the new refrigerant R410A

is 1.6 times higher than conventional refrigerant

(R22). The refrigerating oil is also changed in

accordance with change of refrigerant, so be careful

that water, dust, and existing refrigerant or refrigerat-

ing oil are not entered in the refrigerant cycle of the

air conditioner using the new refrigerant during

installation work or servicing time.

If the refrigerant gas leakage occurs and its

concentration exceeds the marginal level, an

oxygen starvation accident may result.

7. Be sure to carry out installation or removal

according to the installation manual.

The next section describes the precautions for air

conditioner using the new refrigerant. Conforming to

contents of the next section together with the

general cautions included in this manual, perform

the correct and safe work.

Improper installation may cause refrigeration

trouble, water leakage, electric shock, fire, etc.

8. Unauthorized modifications to the air conditioner

may be dangerous. If a breakdown occurs

please call a qualified air conditioner technician

or electrician.

3-1. Safety During Installation/Servicing

Improper repair’s may result in water leakage,

electric shock and fire, etc.

As R410A’s pressure is about 1.6 times higher than

that of R22, improper installation/servicing may

cause a serious trouble. By using tools and materi-

als exclusive for R410A, it is necessary to carry out

installation/servicing safely while taking the following

precautions into consideration.

3-2. Refrigerant Piping Installation

3-2-1. Piping Materials and Joints Used

For the refrigerant piping installation, copper pipes

and joints are mainly used. Copper pipes and joints

suitable for the refrigerant must be chosen and

installed. Furthermore, it is necessary to use clean

copper pipes and joints whose interior surfaces are

less affected by contaminants.

1. Never use refrigerant other than R410A in an air

conditioner which is designed to operate with

R410A.

If other refrigerant than R410A is mixed, pressure

in the refrigeration cycle becomes abnormally

high, and it may cause personal injury, etc. by a

rupture.

1. Copper Pipes

It is necessary to use seamless copper pipes

which are made of either copper or copper alloy

and it is desirable that the amount of residual oil

is less than 40 mg/10 m. Do not use copper

pipes having a collapsed, deformed or discolored

portion (especially on the interior surface).

2. Confirm the used refrigerant name, and use tools

and materials exclusive for the refrigerant R410A.

The refrigerant name R410A is indicated on the

visible place of the outdoor unit of the air condi-

tioner using R410A as refrigerant. To prevent

mischarging, the diameter of the service port

differs from that of R22.

Otherwise, the expansion valve or capillary tube

may become blocked with contaminants.

3. If a refrigeration gas leakage occurs during

installation/servicing, be sure to ventilate fully.

As an air conditioner using R410A incurs pres-

sure higher than when using R22, it is necessary

to choose adequate materials.

If the refrigerant gas comes into contact with fire,

a poisonous gas may occur.

Thicknesses of copper pipes used with R410A

are as shown in Table 3-2-1. Never use copper

pipes thinner than 0.8 mm even when it is

available on the market.

4. When installing or removing an air conditioner, do

not allow air or moisture to remain in the refrig-

eration cycle. Otherwise, pressure in the refrig-

eration cycle may become abnormally high so

that a rupture or personal injury may be caused.

5. After completion of installation work, check to

make sure that there is no refrigeration gas

leakage.

If the refrigerant gas leaks into the room, coming

into contact with fire in the fan-driven heater,

space heater, etc., a poisonous gas may occur.

– 7 –

Table 3-2-1 Thicknesses of annealed copper pipes

Thickness (mm)

Nominal diameter

Outer diameter (mm)

R410A

0.80

R22

0.80

1.00

1/4

3/8

1/2

5/8

6.35

9.52

0.80

12.70

15.88

0.80

1.00

2. Joints

For copper pipes, flare joints or socket joints are used. Prior to use, be sure to remove all contaminants.

a) Flare Joints

Flare joints used to connect the copper pipes cannot be used for pipings whose outer diameter exceeds

20 mm. In such a case, socket joints can be used.

Sizes of flare pipe ends, flare joint ends and flare nuts are as shown in Tables 3-2-3 to 3-2-6 below.

b) Socket Joints

Socket joints are such that they are brazed for connections, and used mainly for thick pipings whose

diameter is larger than 20 mm.

Thicknesses of socket joints are as shown in Table 3-2-2.

Table 3-2-2 Minimum thicknesses of socket joints

Reference outer diameter of

copper pipe jointed (mm)

Minimum joint thickness

(mm)

Nominal diameter

1/4

3/8

1/2

5/8

6.35

9.52

0.50

0.60

0.70

0.80

12.70

15.88

3-2-2. Processing of Piping Materials

When performing the refrigerant piping installation, care should be taken to ensure that water or dust does not

enter the pipe interior, that no other oil than lubricating oils used in the installed air-water heat pump is used,

and that refrigerant does not leak. When using lubricating oils in the piping processing, use such lubricating oils

whose water content has been removed. When stored, be sure to seal the container with an airtight cap or any

other cover.

1. Flare processing procedures and precautions

a) Cutting the Pipe

By means of a pipe cutter, slowly cut the pipe so that it is not deformed.

b) Removing Burrs and Chips

If the flared section has chips or burrs, refrigerant leakage may occur.

Carefully remove all burrs and clean the cut surface before installation.

c) Insertion of Flare Nut

– 8 –

d) Flare Processing

Make certain that a clamp bar and copper

pipe have been cleaned.

ØD

By means of the clamp bar, perform the flare

processing correctly.

Use either a flare tool for R410A or conven-

tional flare tool.

Flare processing dimensions differ according

to the type of flare tool. When using a con-

ventional flare tool, be sure to secure “dimen-

sion A” by using a gauge for size adjustment.

Fig. 3-2-1 Flare processing dimensions

Table 3-2-3 Dimensions related to flare processing for R410A

A (mm)

Conventional flare tool

Outer

diameter

(mm)

Nominal

diameter

Thickness

(mm)

Flare tool for R410A

clutch type

Clutch type

1.0 to 1.5

Wing nut type

1.5 to 2.0

1/4

3/8

1/2

5/8

6.35

9.52

0.8

1.0

0 to 0.5

1.5 to 2.0

12.70

15.88

2.0 to 2.5

Table 3-2-4 Dimensions related to flare processing for R22

A (mm)

Outer

Nominal

diameter

Thickness

(mm)

diameter

(mm)

Conventional flare tool

Flare tool for R22

clutch type

Clutch type

0.5 to 1.0

Wing nut type

1.0 to 1.5

1/4

3/8

1/2

5/8

6.35

9.52

0.8

1.0

0 to 0.5

1.0 to 1.5

12.70

15.88

1.5 to 2.0

Table 3-2-5 Flare and flare nut dimensions for R410A

Dimension (mm)

Nominal

diameter

Outer diameter

Thickness

(mm)

Flare nut width

(mm)

1/4

3/8

1/2

5/8

6.35

9.52

0.8

1.0

9.1

9.2

6.5

9.7

13.2 13.5

12.70

15.88

16.6 16.0 12.9

19.7 19.0 16.0

– 9 –

Table 3-2-6 Flare and flare nut dimensions for R22

Dimension (mm)

Nominal

diameter

Outer diameter

Thickness

(mm)

Flare nut width

(mm)

1/4

3/8

1/2

5/8

3/4

6.35

9.52

0.8

1.0

9.0

9.2

6.5

9.7

13.0 13.5

12.70

15.88

19.05

16.2 16.0 12.9

19.7 19.0 16.0

23.3 24.0 19.2

Fig. 3-2-2 Relations between flare nut and flare seal surface

2. Flare Connecting Procedures and Precautions

a) Make sure that the flare and union portions do not have any scar or dust, etc.

b) Correctly align the processed flare surface with the union axis.

c) Tighten the flare with designated torque by means of a torque wrench. The tightening torque for R410A is

the same as that for conventional R22. Incidentally, when the torque is weak, the gas leakage may occur.

When it is strong, the flare nut may crack and may be made non-removable. When choosing the tighten-

ing torque, comply with values designated by manufacturers.Table 3-2-7 shows reference values.

NOTE :

When applying oil to the flare surface, be sure to use oil designated by the manufacturer.

If any other oil is used, the lubricating oils may deteriorate and cause the compressor to burn out.

Table 3-2-7 Tightening torque of flare for R410A [Reference values]

Tightening torque of torque

wrenches available on the market

N•m (kgf•cm)

Nominal

diameter

Outer diameter

(mm)

Tightening torque

N•m (kgf•cm)

1/4

3/8

1/2

5/8

6.35

9.52

14 to 18 (140 to 180)

33 to 42 (330 to 420)

50 to 62 (500 to 620)

63 to 77 (630 to 770)

16 (160), 18 (180)

42 (420)

12.70

15.88

55 (550)

65 (650)

– 10 –

3-3. Tools

3-3-1. RequiredTools

The service port diameter of packed valve of the outdoor unit in the air-water heat pump using R410A is

changed to prevent mixing of other refrigerant. To reinforce the pressure-resisting strength, flare processing

dimensions and opposite side dimension of flare nut (For Ø12.7 copper pipe) of the refrigerant piping are

lengthened.

The used refrigerating oil is changed, and mixing of oil may cause a trouble such as generation of sludge,

clogging of capillary, etc. Accordingly, the tools to be used are classified into the following three types.

1. Tools exclusive for R410A (Those which cannot be used for conventional refrigerant (R22))

2. Tools exclusive for R410A, but can be also used for conventional refrigerant (R22)

3. Tools commonly used for R410A and for conventional refrigerant (R22)

The table below shows the tools exclusive for R410A and their interchangeability.

Tools exclusive for R410A (The following tools for R410A are required.)

Tools whose specifications are changed for R410A and their interchangeability

R410A

Conventional air-water

heat pump installation

air-water heat pump installation

No.

Used tool

Usage

Existence of

Whether conven-

Whether new equipment

can be used with

conventional refrigerant

new equipment tional equipment

for R410A

can be used

Flare tool

Pipe flaring

Ye s

*(Note 1)

Copper pipe gauge for

adjusting projection

margin

Flaring by

conventional flare tool

Ye s

*(Note 1)

Torque wrench

(For Ø12.7)

Connection of flare nut

Gauge manifold

Charge hose

Evacuating, refrigerant

charge, run check, etc.

Vacuum pump adapter Vacuum evacuating

Ye s

Electronic balance for

Refrigerant charge

refrigerant charging

Refrigerant cylinder

Leakage detector

Refrigerant charge

Gas leakage check

Refrigerant charge

Ye s

10 Charging cylinder

(Note 2)

(Note 1) When flaring is carried out for R410A using the conventional flare tools, adjustment of projection

margin is necessary. For this adjustment, a copper pipe gauge, etc. are necessary.

(Note 2) Charging cylinder for R410A is being currently developed.

General tools (Conventional tools can be used.)

In addition to the above exclusive tools, the following equipments which serve also for R22 are necessary

as the general tools.

1. Vacuum pump

4. Reamer

9. Hole core drill (Ø65)

Use vacuum pump by attaching

vacuum pump adapter.

5. Pipe bender

10. Hexagon wrench

(Opposite side 4mm)

6. Level vial

2. Torque wrench (For Ø6.35, Ø9.52)

11. Tape measure

12. Metal saw

7. Screwdriver (+, –)

8. Spanner or Monkey wrench

3. Pipe cutter

Also prepare the following equipments for other installation method and run check.

1. Clamp meter

2. Thermometer

3. Insulation resistance tester

4. Electroscope

– 11 –

3-4. Recharging of Refrigerant

When it is necessary to recharge refrigerant, charge the specified amount of new refrigerant according to the

following steps.

Recover the refrigerant, and check no refrigerant

remains in the equipment.

When the compound gauge’s pointer has indicated

–0.1 Mpa (–76 cmHg), place the handle Low in the

fully closed position, and turn off the vacuum pump’s

power switch.

Connect the charge hose to packed valve service

port at the outdoor unit’s gas side.

Keep the status as it is for 1 to 2 minutes, and ensure

that the compound gauge’s pointer does not return.

Connect the charge hose to the vacuum pump

adapter.

Set the refrigerant cylinder to the electronic balance,

connect the connecting hose to the cylinder and the

connecting port of the electronic balance, and charge

liquid refrigerant.

Open fully both packed valves at liquid and gas

sides.

(For refrigerant charging, see the figure below.)

Place the handle of the gauge manifold Low in the

fully opened position, and turn on the vacuum pump’s

power switch. Then, evacuating the refrigerant in the

cycle.

1. Never charge refrigerant exceeding the specified amount.

2. If the specified amount of refrigerant cannot be charged, charge refrigerant bit by bit in COOL mode.

3. Do not carry out additional charging.

When additional charging is carried out if refrigerant leaks, the refrigerant composition changes in the

refrigeration cycle, that is characteristics of the air conditioner changes, refrigerant exceeding the

specified amount is charged, and working pressure in the refrigeration cycle becomes abnormally high

pressure, and may cause a rupture or personal injury.

(Water heat

(Outdoor unit)

exchanger unit)

Opened

Refrigerant cylinder

(with siphon)

Check valve

Opened

Open/close

valve for charging

Closed

Service port

Electronic balance for refrigerant charging

Fig. 3-4-1 Configuration of refrigerant charging

– 12 –

1. Be sure to make setting so that liquid can be charged.

2. When using a cylinder equipped with a siphon, liquid can be charged without turning it upside down.

It is necessary for charging refrigerant under condition of liquid because R410A is mixed type of refrigerant.

Accordingly, when charging refrigerant from the refrigerant cylinder to the equipment, charge it turning the

cylinder upside down if cylinder is not equipped with siphon.

[ Cylinder with siphon ]

[ Cylinder without siphon ]

Gauge manifold

OUTDOOR unit

c y l i n d e r

a n t i g e r R e f r

Refrigerant

cylinder

Electronic

balance

Electronic

balance

Siphon

R410A refrigerant is HFC mixed refrigerant.

Therefore, if it is charged with gas, the composi-

tion of the charged refrigerant changes and the

characteristics of the equipment varies.

Fig. 3-4-2

3-5. Brazing of Pipes

1. Phosphor bronze brazing filler tends to react

with sulfur and produce a fragile compound

water solution, which may cause a gas

leakage.Therefore, use any other type of

brazing filler at a hot spring resort, etc., and

coat the surface with a paint.

3-5-1. Materials for Brazing

1. Silver brazing filler

Silver brazing filler is an alloy mainly composed

of silver and copper. It is used to join iron, copper

or copper alloy, and is relatively expensive though

it excels in solderability.

2. When performing brazing again at time of

servicing, use the same type of brazing filler.

2. Phosphor bronze brazing filler

Phosphor bronze brazing filler is generally used

to join copper or copper alloy.

3-5-2. Flux

1. Reason why flux is necessary

3. Low temperature brazing filler

• By removing the oxide film and any foreign

matter on the metal surface, it assists the flow

of brazing filler.

Low temperature brazing filler is generally called

solder, and is an alloy of tin and lead. Since it is

weak in adhesive strength, do not use it for

refrigerant pipes.

• In the brazing process, it prevents the metal

surface from being oxidized.

• By reducing the brazing filler’s surface tension,

the brazing filler adheres better to the treated

metal.

– 13 –

2. Characteristics required for flux

3-5-3. Brazing

• Activated temperature of flux coincides with the

brazing temperature.

As brazing work requires sophisticated techniques,

experiences based upon a theoretical knowledge, it

must be performed by a person qualified.

• Due to a wide effective temperature range, flux

is hard to carbonize.

In order to prevent the oxide film from occurring in

the pipe interior during brazing, it is effective to

proceed with brazing while letting dry Nitrogen gas

(N2) flow.

• It is easy to remove slag after brazing.

• The corrosive action to the treated metal and

brazing filler is minimum.

• It excels in coating performance and is harm-

less to the human body.

Never use gas other than Nitrogen gas.

1. Brazing method to prevent oxidation

As the flux works in a complicated manner as

described above, it is necessary to select an

adequate type of flux according to the type and

shape of treated metal, type of brazing filler and

brazing method, etc.

1) Attach a reducing valve and a flow-meter to

the Nitrogen gas cylinder.

2) Use a copper pipe to direct the piping mate-

rial, and attach a flow-meter to the cylinder.

3. Types of flux

• Noncorrosive flux

3) Apply a seal onto the clearance between the

piping material and inserted copper pipe for

Nitrogen in order to prevent backflow of the

Nitrogen gas.

Generally, it is a compound of borax and boric

acid.

It is effective in case where the brazing tem-

perature is higher than 800°C.

4) When the Nitrogen gas is flowing, be sure to

keep the piping end open.

• Activated flux

Most of fluxes generally used for silver brazing

are this type.

5) Adjust the flow rate of Nitrogen gas so that it

is lower than 0.05 m³/Hr or 0.02 MPa

(0.2kgf/cm²) by means of the reducing valve.

It features an increased oxide film removing

capability due to the addition of compounds

such as potassium fluoride, potassium chloride

and sodium fluoride to the borax-boric acid

compound.

6) After performing the steps above, keep the

Nitrogen gas flowing until the pipe cools down

to a certain extent (temperature at which

pipes are touchable with hands).

7) Remove the flux completely after brazing.

4. Piping materials for brazing and used

brazing filler/flux

Piping material Used brazing filler

Used flux

Do not use

Paste flux

Vapor flux

Copper - Copper

Copper - Iron

Iron - Iron

Phosphor copper

Silver

Flow meter

Silver

Stop valve

Nitrogen gas

cylinder

1. Do not enter flux into the refrigeration cycle.

From Nitrogen cylinder

2. When chlorine contained in the flux remains

within the pipe, the lubricating oil deteriorates.

Therefore, use a flux which does not contain

chlorine.

Pipe

Nitrogen

gas

3. When adding water to the flux, use water

which does not contain chlorine (e.g. distilled

water or ion-exchange water).

Rubber plug

4. Remove the flux after brazing.

Fig. 3-5-1 Prevention of oxidation during brazing

– 14 –

4. CONSTRUCTION VIEWS

4-1. Indoor Unit

RAS-B10GKVP-E

RAS-B13GKVP-E

RAS-B16GKVP-E

790

Plasma pure filter

Indoor heat exchanger

Front panel

Air filter

790

215

Knockout system

Zeolite-plus filter

Air ionizer

Knockout system

54.5

Remote controller holder

54.5

Installation plate hanging section

Wireless remote controller

Drain hose

(Outside length:0.54m)

290

Installation plate

hanging section

Connecting pipe

(Outside length:0.45m)

Flare Ø6.35

Connecting pipe

(Outside length:0.4m)

Flare Ø9.52

(RAS-B16GKVP-E : Ø12.7)

Parts name of remote controller WH-H03JE

674

450

Stud bolt hole

for Ø6

288

Hanging

section

Minimum

distance

to ceilinfg

Stud bolt hole

for Ø8 to Ø10

Minimum

distance

to wall

Minimum

distance

to wall

74 or more

140 or more

Lower part

hanging section

Outline of

installation plate

Center line

of main unit

Center line of

installation plate

304

790

– 15 –

4-2. Outdoor Unit

RAS-10GAVP-E, RAS-13GAVP-E, RAS-16GAVP-E

Ø25 drain hole

leg part

600

108

Ø11-14U-shape hole

(for Ø8-Ø10 anchor bolt)

125

2-Ø20x88 drain long hole

Connecting pipe port

Pipe dia. Ø9.52:RAS-10GAVP-E, RAS-13GAVP-E

(

)

Ø12.7:RAS-16GAVP-E

Connecting pipe port

(Pipe dia. Ø6.35)

8-Ø7 hole

(for fixing outdoor unit)

leg part

Ø11x14 long hole

(for Ø8-Ø10 anchor bolt)

483

257

Packed valve cover

108

157

69.5

147

145

143

342

500

780

Charging port

4-Ø4.5 embossment

Fan guard

Fin guard

Detailed

leg part

600

When installing the outdoor unit,

leave open in at least two of

directions (A), (B), (C) and (D)

shown in the figure below.

view

Mounting dimensions of anchor bolt

600

Outside line

of product

2-Ø11x14U- Shape hole

(for Ø8-Ø10 anchor bolt)

50 or more

Intake

250 or more

Intake

Outside line

of product

100 or more

Outside line

of product

Minimum distance

from wall

200 or more

2-Ø11x14 long hole

(for Ø8-Ø10 anchor bolt)

Outlet

600

Detailed

leg part

– 16 –

5. WIRING DIAGRAM

5-1. Outdoor Unit

RAS-10GAVP-E, RAS-13GAVP-E, RAS-16GAVP-E

Color

Identification

RED : RED

WHI : WHITE

BLK : BLACK

BLU : BLUE

BRW : BROWN

ORN : ORANGE

PUR : PURPUL

YEL : YELLOW

GRY : GRAY

PNK : PINK

220-240V ~50Hz

220V ~60Hz

5-2. Indoor Unit

RAS-B10GKVP-E, RAS-B13GKVP-E, RAS-B16GKVP-E

GRN& GREEN&

YEL

YELLOW

BLK

1 1

2 2

3 3

4 4

5 5

6 6

INDOOR

TERMINAL

BLOCK

1 2 3

1 2 3 4

Heat

exchanger

Ion electrode

1 2 3 4

GRN & YEL

BLK WHI RED

1 2 3 4

CN22

CN23

CN21

CN33

CN01

(WHI)

(BLU)

BRW

1 1

BLK

1 1

Micro SW

CN34

FUSE

F01

2 2

(RED)

BLK

BLU

2 2

HEAT EXCHANGER

SENSOR (TC)

AC 250V

T3.15A

CN03

CN10

(WHI)

1 1

FAN MOTOR

(WHI)

RED

BLK

1 1

2 2

THERMO SENSOR

(TA)

3 3

4 4

5 5

6 6

WHI DC MOTOR

YEL

BLU

CN100

CN13

(WHI)

BLU

1 1

BLU

2 2

BLU

3 3

BLU

4 4

BLU

5 5

BLU

6 6

BLU

7 7

BLU

8 8

WHI

9 9

8 8

7 7

6 6

5 5

4 4

3 3

2 2

1 1

DC5V

LINE

FILTER

CN07

(WHI)

DB01

WHI

1 1

YEL

2 2

YEL

3 3

YEL

4 4

YEL

5 5

DC12V

1 1

2 2

3 3

4 4

5 5

TNR

MAIN P.C. BOARD

(MCC-5020)

CN08 (WHI)

1 2 3 4

LOUVER MOTOR

MCC-899

10 10

– 17 –

6. SPECIFICATIONS OF ELECTRICAL PARTS

6-1. Indoor Unit

RAS-B10GKVP-E, RAS-B13GKVP-E, RAS-B16GKVP-E

No.

Parts name

Fan motor (for indoor)

Type

MF-280-30-5R

( – )

Specifications

DC280–340V, 30W

Room temp. sensor (TA-sensor)

Heat exchanger temp. sensor (TC-sensor)

Louver motor

10kΩ at 25°C

( – )

10kΩ at 25°C

MP24Z

Output (Rated) 1W, 16 poles, DC12V

6-2. Outdoor Unit

RAS-10GAVP-E, RAS-13GAVP-E, RAS-16GAVP-E

No.

Parts name

Model name

CH-57

Rating

L = 10mH, 16A × 2

DC140V, 43W

10kΩ (25°C)

Reactor

Outside fan motor

ICF-140-43-4R

(Inverter attached)

——

Suction temp. sensor (TS sensor)

Discharge temp. sensor (TD sensor)

Outside air temp. sensor (TO sensor)

Heat exchanger temp. sensor (TE sensor)

Terminal block (6P)

62kΩ (20°C)

10kΩ (25°C)

20A, AC250V

3-phases 4-poles 750W

DC12V

Compressor

DA111A1F-20F1

CAM-MD12TF

VHV

Coil for P.M.V.

Coil for 4-way valve

AC220–240V

– 18 –

7. REFRIGERANT CYCLE DIAGRAM

7-1. Refrigerant Cycle Diagram

RAS-B10GKVP-E/RAS-10GAVP-E

T1 Temp. measurement

INDOOR UNIT

Indoor heat

exchanger

Cross flow fan

Max. : 25m

Min. : 2m

Pressure measurement

Chargeless : 15m

Charge : 20g/m

(16 to 25m)

Deoxidized copper pipe

Outer dia. : 6.35mm

Thickness : 0.8mm

Gauge attaching port

Vacuum pump connecting port

Sectional shape

of heat insulator

Deoxidized copper pipe

Outer dia. : 9.52mm

Thickness : 0.8mm

Strainer

Muffler

4-way valve

(STF-0108Z)

Pulse motor

valve at liquid side

(CAM-B22YGTF-3)

Muffler

Compressor

DA111A1F-20F1

Strainer

Outdoor heat

exchanger

Temp. measurement

Refrigerant amount : 0.82kg

Propeller fan

OUTDOOR UNIT

Gas leak check position

Refrigerant flow (Cooling)

Refrigerant flow (Heating)

NOTE :

• The maximum pipe length of this air conditioner is 25 m. When the pipe length exceeds 15m, the additional

charging of refrigerant, 20g per 1m for the part of pipe exceeded 15m is required. (Max. 200g)

– 19 –

RAS-B13GKVP-E/RAS-13GAVP-E, RAS-B16GKVP-E/RAS-16GAVP-E

T1 Temp. measurement

INDOOR UNIT

Indoor heat

exchanger

Cross flow fan

Max. : 25m

Min. : 2m

Pressure measurement

Chargeless : 15m

Charge : 20g/m

(16 to 25m)

Deoxidized copper pipe

Outer dia. : 6.35mm

Thickness : 0.8mm

Gauge attaching port

Vacuum pump connecting port

Sectional shape

of heat insulator

Deoxidized copper pipe

Outer dia. : 9.52mm(13),

12.7mm(16)

Thickness : 0.8mm

Strainer

Muffler

4-way valve

(STF-0108Z)

Pulse motor

valve at liquid side

(CAM-B22YGTF-3)

Muffler

Compressor

DA111A1F-20F1

Outdoor heat

exchanger

Split capillary

Ø1.2 x 80

Temp. measurement

Refrigerant amount : 0.96kg

Propeller fan

OUTDOOR UNIT

Gas leak check position

Refrigerant flow (Cooling)

Refrigerant flow (Heating)

NOTE :

• The maximum pipe length of this air conditioner is 25 m. When the pipe length exceeds 15m, the additional

charging of refrigerant, 20g per 1m for the part of pipe exceeded 15m is required. (Max. 200g)

– 20 –

7-2. Operation Data

Temperature

condition (°C)

Heat exchanger

pipe temp.

Standard

pressure

P (MPa)

Compressor

revolution

(rps)

Model name

RAS-

Indoor

fan mode

Outdoor

fan mode

Indoor Outdoor

T1 (°C)

T2 (°C)

42 to 44

42 to 45

43 to 47

B10GKVP-E

B13GKVP-E

B16GKVP-E

0.9 to 1.1

0.8 to 1.0

0.7 to 0.9

13 to 15

11 to 14

8 to 11

High

27/19

35/–

Temperature

condition (°C)

Heat exchanger

pipe temp.

Standard

pressure

P (MPa)

Compressor

revolution

(rps)

Model name

RAS-

Indoor

fan mode

Outdoor

fan mode

Indoor Outdoor

T1 (°C)

T2 (°C)

0 to 3

0 to 2

B10GKVP-E

B13GKVP-E

B16GKVP-E

2.2 to 2.4

2.5 to 2.7

2.8 to 3.0

37 to 39

42 to 45

48 to 49

High

20/–

7/6

NOTES :

1. Measure surface temperature of heat exchanger pipe around center of heat exchanger path U bent.

(Thermistor themometer)

2. Connecting piping condition : 7.5 m

– 21 –

8. CONTROL BLOCK DIAGRAM

8-1. Indoor Unit

RAS-B10GKVP-E, RAS-B13GKVP-E, RAS-B16GKVP-E

Indoor Unit Control Unit

Louver Motor

M.C.U.

Louver

Motor

Functions

Heat Exchanger Sensor (Tc)

• Cold draft preventing Function

Room Temperature Sensor (Ta)

• 3-minute Delay at Restart for Compressor

Drive Control

Infrared Rays Signal Receiver

• Fan Motor Starting Control

and Indication

Indoor Fan

Motor Control

• Processing

(Temperature Processing)

Initializing Circuit

Indoor

Fan Motor

• Timer

Clock Frequency

Oscillator Circuit

• Serial Signal Communication

• Clean Function

Air purifier

unit

Power Supply

Circuit

Converter

(D.C circuit)

Micro Switch

Noise Filter

Serial Signal Transmitter/Receiver

From Outdoor Unit

220-240V ~50Hz

220V ~60Hz

Serial Signal Communication

(Operation Command and Information)

Infrared Rays, 36.7kHz

Remote Controller

REMOTE CONTROLLER

Operation (START/STOP)

Operation Mode Selection

AUTO, COOL, DRY, HEAT

Thermo. Setting

Fan Speed Selection

ON TIMER Setting

OFF TIMER Setting

Louver AUTO Swing

Louver Direction Setting

ECO

Hi-POWER

Air Purifier

SLEEP

– 22 –

MICRO-COMPUTER BLOCK DIAGRAM

For INDOOR UNIT

220–240 V ~50Hz

220 V ~60Hz

MCC5009 (P.C.B)

OUTDOOR UNIT

Indoor unit

send/receive

circuit

Current

detect

M.C.U

• PWM synthesis function

• Input current release control

• IGBT over-current detect control

• Outdoor fan control

Gate drive

circuit

Discharge

temp. sensor

• High power factor correction control

• Inverter output frequency control

• A/D converter function

• P.M.V. control

• Discharge temp. control

• 4-way valve control

Outdoor air

temp. sensor

Current

detect

Suction temp.

sensor

Gate drive

circuit

• Signal communication to indoor unit

Heat exchanger

temp.sensor

High Power

factor Correction

circuit

Clock

frequency

4MHz

Noise

Filter

Input current

sensor

Converter

(AC → DC)

Outdoor

Fan motor

Inverter

(DC → AC)

Driver circuit

of P.M.V.

Relay

circuit

Inverter

(DC → AC)

Compressor

P.M.V. : Pulse Motor Valve

M.C.U. : Micro Control Unit

4-way

valve

P.M.V.

9. OPERATION DESCRIPTION

• Detection of inverter input current and current

release operation

• Over-current detection and prevention operation

to IGBT module (Compressor stop function)

• Compressor and outdoor fan stop function when

serial signal is off (when the serial signal does not

reach the board assembly of outdoor control by

trouble of the signal system)

9-1. Outline of Air Conditioner Control

This air conditioner is a capacity-variable type air

conditioner, which uses DC motor for the indoor fan

motor and the outdoor fan motor. And the capacity-

proportional control compressor which can change the

motor speed in the range from 13 to 115 rps is

mounted. The DC motor drive circuit is mounted to the

indoor unit. The compressor and the inverter to control

fan motor are mounted to the outdoor unit.

• Transferring of operation information (Serial

signal) from outdoor unit controller to indoor unit

controller

The entire air conditioner is mainly controlled by the

indoor unit controller.

• Detection of outdoor temperature and operation

revolution control

• Defrost control in heating operation (Temp.

measurement by outdoor heat exchanger and

control for 4-way valve and outdoor fan)

The indoor unit controller drives the indoor fan motor

based upon command sent from the remote controller,

and transfers the operation command to the outdoor

unit controller.

The outdoor unit controller receives operation com-

mand from the indoor unit side, and controls the

outdoor fan and the pulse motor valve. (P.M.V)

Besides, detecting revolution position of the compres-

sor motor, the outdoor unit controller controls speed of

the compressor motor by controlling output voltage of

the inverter and switching timing of the supply power

(current transfer timing) so that motors drive according

to the operation command.

3. Contents of operation command signal

(Serial signal) from indoor unit controller to

outdoor unit controller

The following three types of signals are sent from

the indoor unit controller.

• Operation mode set on the remote controller

• Compressor revolution command signal defined

by indoor temperature and set temperature

(Correction along with variation of room tempera-

ture and correction of indoor heat exchanger

temperature are added.)

And then, the outdoor unit controller transfers reversely

the operating status information of the outdoor unit to

control the indoor unit controller.

As the compressor adopts four-pole brushless

DC motor, the frequency of the supply power

from inverter to compressor is two-times cycles

of the actual number of revolution.

• Temperature of indoor heat exchanger

• For these signals ([Operation mode] and [Com-

pressor revolution] indoor heat exchanger tem-

perature), the outdoor unit controller monitors the

input current to the inverter, and performs the

followed operation within the range that current

does not exceed the allowable value.

1. Role of indoor unit controller

The indoor unit controller judges the operation

commands from the remote controller and assumes

the following functions.

4. Contents of operation command signal

(Serial signal) from outdoor unit controller

to indoor unit controller

• Judgment of suction air temperature of the indoor

heat exchanger by using the indoor temp. sensor.

(TA sensor)

The following signals are sent from the outdoor unit

controller.

• Judgment of the indoor heat exchanger tempera-

ture by using heat exchanger sensor (TC sensor)

(Prevent-freezing control, etc.)

• The current operation mode

• The current compressor revolution

• Outdoor temperature

• Louver motor control

• Indoor fan motor operation control

• LED (Light Emitting Diode) display control

• Existence of protective circuit operation

For transferring of these signals, the indoor unit

controller monitors the contents of signals, and

judges existence of trouble occurrence.

• Transferring of operation command signal (Serial

signal) to the outdoor unit

• Reception of information of operation status

(Serial signal including outside temp. data) to the

outdoor unit and judgment/display of error

Contents of judgment are described below.

• Whether distinction of the current operation

status meets to the operation command signal

• Air purifier operation control

• Whether protective circuit operates

2. Role of outdoor unit controller

When no signal is received from the outdoor

unit controller, it is assumed as a trouble.

Receiving the operation command signal (Serial

signal) from the indoor unit controller, the outdoor

unit performs its role.

• Compressor operation control

• Operation control of outdoor fan motor

• P.M.V. control

Operations followed to judgment

of serial signal from indoor side.

• 4-way valve control

– 24 –

9-2. Operation Description

9-2.

1. Basic operation ........................................................................................................... 26

1. Operation control ................................................................................................... 26

2. Cooling/Heating operation ..................................................................................... 27

3. AUTO operation ..................................................................................................... 27

4. DRY operation........................................................................................................ 27

2. Indoor fan motor control ............................................................................................. 28

3. Outdoor fan motor control........................................................................................... 30

4. Capacity control .......................................................................................................... 31

5. Current release control ............................................................................................... 31

6. Release protective control by temperature of indoor heat exchanger........................ 32

7. Quick heating control .................................................................................................. 33

8. Defrost control (Only in heating operation) ................................................................ 33

9. Louver control ............................................................................................................. 34

1) Louver position....................................................................................................... 34

2) Air direction adjustment ......................................................................................... 34

3) Swing ..................................................................................................................... 34

10. ECO operation ............................................................................................................ 35

11. Temporary operation................................................................................................... 36

12. Air purifying control [Detection of abnormality] .......................................................... 37

13. Discharge temperature control ................................................................................... 37

14. Pulse motor valve (P.M.V.) control .............................................................................. 38

15. Clean operation .......................................................................................................... 39

16. Clean operation release ............................................................................................ 40

17. Select switch on remote controller ............................................................................. 41

9-3. Auto Restart Function.............................................................................................42

9-3-1. How to Set the Auto Restart Function.................................................................... 42

9-3-2. How to Cancel the Auto Restart Function ............................................................. 43

9-3-3. Power Failure During Timer Operation ................................................................... 43

9-4. FILTER Indicator......................................................................................................43

9-4-1. How to Turn Off FILTER Indicator............................................................................ 43

9-5. Remote Controller and Its Fuctions ......................................................................44

9-5-1. Parts Name of Remote Controller ........................................................................... 44

9-5-2. Name and Functions of Indications on Remote Controller ................................. 45

9-6. Hi-POWER Mode

([Hi-POWER] button on the remote controller is pressed) ..................................46

– 25 –

Item

Operation flow and applicable data, etc.

1. Operation control

Description

1. Basic

operation

Receiving the user’s operation condition setup, the operation statuses of indoor/outdoor units are

controlled.

1) The operation conditions are selected by the remote controller as shown in the below.

2) A signal is sent by ON button of the remote controller.

3) The signal is received by a sensor of the indoor unit and processed by the indoor controllers as

shown in the below.

4) The indoor controller controls the indoor fan motor and louver motor.

5) The indoor controller sends the operation command to the outdoor controller, and sends/receives

the control status with a serial signal.

6) The outdoor controller controls the operation as shown in the left, and also controls the compres-

sor, outdoor fan motor, 4-way valve and pulse motor valve.

Remote controller

Selection of

operation conditions

Control contents of remote controller

• ON/OFF (Air conditioner/Air purifier)

• Operation select (COOL/HEAT/AUTO/DRY)

• Temperature setup

• Air direction

ON/OFF

• Swing

• Air volume select (AUTO/LOW/LOW+/MED/MED+/HIGH)

• ECO

• ON timer setup

• OFF timer setup

• High power

Indoor unit

Signal receiving

Indoor unit control

• Command signal generating function of

indoor unit operation

• Calculation function (temperature calculation)

• Activation compensation function of indoor fan

• Cold draft preventive function

• Timer function

• Indoor heat exchanger release control

• Indoor fan motor

• Louver motor

Operation command

Serial signal send/receive

Outdoor unit

Serial signal send/receive

Outdoor unit control

• Frequency control of inverter output

• Waveform composite function

• Calculation function

(Temperature calculation)

Inverter

• Compressor

• Outdoor fan motor

• 4-way valve

• Pulse motor valve

(P.M.V.)

• AD conversion function

• Quick heating function

• Delay function of compressor reactivation

• Current release function

• GTr over-current preventive function

• Defrost operation function

– 26 –

Item

Operation flow and applicable data, etc.

2. Cooling/Heating operation

Description

1. Basic

operation

The operations are performed in the following parts by controls according to cooling/heating conditions.

1) Receiving the operation ON signal of the remote controller, the cooling or heating operation signal

starts being transferred form the indoor controller to the outdoor unit.

2) At the indoor unit side, the indoor fan is operated according to the contents of “2. Indoor fan

motor control” and the louver according to the contents of “9. Louver control”, respectively.

3) The outdoor unit controls the outdoor fan motor, compressor, pulse motor valve and

4-way valve according to the operation signal sent from the indoor unit.

*1. The power coupler of 4-way valve is usually turned off, and it is turned on during defrost

operation. (Only in heating)

Operation ON

Setup of remote controller

Indoor unit control

Indoor fan motor control / Louver control

Sending of operation command signal

Compressor revolution control / Outdoor fan motor control /

4-way valve control

In cooling operation: ON

Outdoor unit control

[

]

In heating operation: OFF

Pulse motor valve control

3. AUTO operation

Selection of operation mode

1) Detects the room temperature (Ta) when

the operation started.

2) Selects an operation mode from Ta in

the left figure.

As shown in the following figure, the operation starts by

selecting automatically the status of room temperature

(Ta) when starting AUTO operation.

3) Fan operation continues until an

operation mode is selected.

*1. When reselecting the operation mode, the fan

speed is controlled by the previous operation mode.

4) When AUTO operation has started

within 2 hours after heating operation

stopped and if the room temperature is

20°C or more, the fan operation is

performed with ”Super Ultra LOW” mode

for 3 minutes.

Cooling operation

Ts + 1

Then, select an operation mode.

Monitoring (Fan)

5) If the status of compressor-OFF

continues for 15 minutes the room

temperature after selecting an operation

mode (COOL/HEAT), reselect an

operation mode.

Ts – 1

Heating operation

4. DRY operation

1) Detects the room temperature (Ta) when

the DRY operation started.

DRY operation is performed according to the difference

between room temperature and the setup temperature as 2) Starts operation under conditions in the

shown below.

left figure according to the temperature

difference between the room tempera-

ture and the setup temperature (Tsc).

Setup temperature (Tsc)

= Set temperature on remote controller

(Ts) + (0.0 to 1.0)

In DRY operation, fan speed is controlled in order to

prevent lowering of the room temperature and to avoid air

flow from blowing directly to persons.

[

]

˚C

3) When the room temperature is lower

1°C or less than the setup temperature,

turn off the compressor.

L– (W5)

(W5+W3) / 2

1.0

0.5

SL (W3)

Tsc

Fan speed

– 27 –

Item

Operation flow and applicable data, etc.

Description

* Symbols

2. Indoor fan

motor control

(This operation controls the fan speed at indoor unit side.)

The indoor fan (cross flow fan) is operated by the phase-

control induction motor. The fan rotates in 5 stages in

MANUAL mode, and in 5 stages in AUTO mode, respec-

tively. (Table 1)

M+

L+

: Ultra High

: High

: Medium+

: Medium

: Low+

: Low

L-

SUL

: Low–

: Ultra Low

: Super Ultra Low

COOL ON

Fan speed setup

AUTO

MANUAL

* The fan speed broadly varies due

to position of the louver, etc.

The described value indicates one

under condition of inclining

downward blowing.

(Fig. 1)

Indication

Fan speed

1) When setting the fan speed to L,

L+, M, M+ or H on the remote

controller, the operation is

performed with the constant

speed shown in Fig. 1.

L+

(L + M) / 2

M+

(M + H) / 2

2) When setting the fan speed to

AUTO on the remote controller,

revolution of the fan motor is

controlled to the fan speed level

shown in Fig. 2 and Table 1

(Fig. 2)

Air volume AUTO

according to the setup tempera-

ture, room temperature, and heat

exchanger temperature.

˚C

[

]

M+(WB)

+2.5

+2.0

*3 :Fan speed = (M + –L) x 3/4 + L

*4 :Fan speed = (M + –L) x 2/4 + L

*5 :Fan speed = (M + –L) x 1/4 + L

+1.5

+1.0

+0.5

Tsc

(Linear approximation

from M+ and L)

L(W6)

(Table 1) Indoor fan air flow rate

RAS-B10GKVP-E

RAS-B13GKVP-E

RAS-B16GKVP-E

Fan speed

level

COOL HEAT DRY

Fan speed Air flow rate Fan speed Air flow rate Fan speed Air flow rate

(rpm)

(m³/h)

(rpm)

(m³/h)

(rpm)

(m³/h)

M+

1630

1480

1400

1350

1200

1110

980

910

900

890

880

684

609

569

544

468

423

358

323

318

313

308

232

157

1650

1530

1440

1390

1240

1150

1010

910

900

890

880

730

694

634

589

564

488

443

373

323

318

313

308

232

157

1650

1580

1550

1530

1380

1230

1080

970

960

950

940

790

694

659

644

634

559

483

408

353

348

343

338

263

187

112

M+

L+

L–

SUL

L–

L+

L–

SUL

730

580

430

400

580

430

400

640

490

400

SUL

– 28 –

Item

Operation flow and applicable data, etc.

Description

2. Indoor fan

motor control

1) When setting the fan speed to L,

L+, M, M+ or H on the remote

controller, the operation is per-

formed with the constant speed

shown in Fig. 3 and Table 1.

HEAT ON

2) When setting the fan speed to

AUTO on the remote controller,

revolution of the fan motor is

Fan speed setup

MANUAL

(Fig. 3)

controlled to the fan speed level

shown in Fig. 5 according to the set

temperature and room temperature.

Indication

Fan speed

3) Min air flow rate is controlled by

temperature of the indoor heat

exchanger (Tc) as shown in Fig. 4.

L+

(L + M) / 2

AUTO

4) Cold draft prevention, the fan

speed is controlled by temperature

of the indoor heat exchanger (Tc)

as shown in Fig. 6.

M+

(M + H) / 2

YES

TC ≥ 42˚C

Min air flow rate control

Limited to Min WD tap

No limit

*Fan speed =

(TC

–

W8) + W8

(Fig. 4)

Cold draft preventive control

Basic fan control

Fan speed

AUTO

[

]

H (WE)

TSC

–0.5

–1.0

–1.5

–2.0

–2.5

–5.0

–

5.5

L (W8)

Line-approximate

H and SUL with Tc.

*A+4

*A-4

*A+4

*A-4

*A+4

*A-4

SUL (W2)

Stop

Fan speed MANUAL in starting

Fan speed AUTO in stability

Fan speed AUTO in starting

M+ (WD)

H (WE)

*1:

*2:

4 + L

* No limitation while fan speed MANUAL mode is in stability.

* A: When Tsc ≥ 24, A is 24, and when Tsc < 24, A is Tsc

Tsc: Set value

–

(Fig. 5)

[In starting and in stability]

(Fig. 6)

In starting

In stability

• Until 12 minutes passed after operation start

FAN AUTO • When 12 to 25 minutes passed after operation

• When 12 to 25 minutes passed after operation start

and room temp. is higher than (set temp. –3°C)

start and room temp. is 3°C or lower than set temp. • When 25 minutes or more passed after operation start

FAN Manual • Room temp. < Set temp. –4°C • Room temp. ≥ Set temp. –3.5°C

– 29 –

Item

Operation flow and applicable data, etc.

Description

3. Outdoor fan

motor control

The blowing air volume at the outdoor unit side is controlled. 1) The operation command sent

from the remote controller is

Receiving the operation command from the controller of

indoor unit, the controller of outdoor unit controls fan speed.

processed by the indoor unit

controller and transferred to the

controller of the outdoor unit.

* For the fan motor, a DC motor with non-stage variable

speed system is used. However, it is limited to 8 stages for

reasons of controlling.

2) When strong wind blows at

outdoor side, the operation of air

conditioner continues with the

fan motor stopped.

Air conditioner ON

(Remote controller)

3) Whether the fan is locked or not

is detected, and the operation of

air conditioner stops and an

alarm is displayed if the fan is

locked.

Indoor unit controller

4) According to each operation

mode, by the conditions of

outdoor temperature (To) and

compressor revolution, the speed

of the outdoor fan shown in the

table is selected.

1) Outdoor unit

operation command

(Outdoor fan control)

YES

OFF status of

2) Fan speed ≥ 400

fan motor continues.

when the motor stopped.

Fan motor ON

Air conditioner

OFF

Alarm

display

3) Fan lock

4) Motor operates as shown in the table below.

In cooling operation

In Heating operation

~ 13.8

~ 31.7

32.3 ~ MAX

Compressor speed (rps) ~16.8 ~47.9 48.5 ~ MAX

Compressor speed (rps)

MIN MAX MIN MAX MIN MAX

To 15°C

f 3

f 8

f B

f 3

f 5

f 7

f A

f 8

f 9

f A

f C

f 3

f 9

f A

f B

f 9

f A

f D

f 6

f 8

f 9

f B

f D

To 38°C

f 2

f 1

f 2

f 3 f C f D f E f F

f 3 f B f C f E f F

To < 15°C

To < 5.5°C

To < –5.0°C

To 28°C

To 15°C

f 3

f 2

f 8

f 6

f 4

f 9 f A f B

To 5.5°C

f 7

f 5

f 8

f 6

f 9

f 7

To 15°C

To 0°C

To < 15°C

To < 5.5°C

To < –5.5°C

During

ECO mode

To 38°C

f 3 f B f C f C f D

f 3 f 2 f 3 f B f C

During

ECO mode

To < 38°C

When To is abnormal

f D f F f D f F f D f F

When To is abnormal

Outdoor fan speed (rpm)

Tap

f 1

f 2

f 3

f 4

f 5

f 6

f 7

f 8

10GAVP-E

200

13GAVP-E

200

16GAVP-E

200

Tap

f 9

10GAVP-E

700

13GAVP-E

700

16GAVP-E

700

300

f A

f B

f C

f D

f E

f F

700

390

700

450

700

500

750

840

920

500

750

840

920

600

750

840

920

600

– 30 –

Item

Operation flow and applicable data, etc.

Description

4. Capacity

control

The cooling or heating capacity depending on the load is

adjusted.

1) The difference between set

temperature on remote controller

(Ts) and room temperature (Ta)

is calculated.

According to difference between the setup value of tempera-

ture and the room temperature, the capacity is adjusted by

the compressor revolution.

2) According to the temperature

difference, the correction value of

Hz signal which determines the

compressor speed is set up.

Remote controller

Set temp. (Ts)

Indoor unit

Room temp. (Ta)

3) The rotating position and speed

of the motor are detected by the

electromotive force occurred on

the motor winding with operation

of the compressor.

Ts –Ta

4) According to the difference

resulted from comparison of the

correction value of Hz signal with

the present operation Hz, the

inverter output and the commuta-

tion timing are varied.

Correction of Hz signal

Detection of electromotive force

of compressor motor winding

5) Change the compressor motor

speed by outputting power to the

compressor.

Detection of motor speed and rotor position

* The contents of control

operation are same in cooling

operation and heating

operation

Correction value of Hz signal ≤ Operating Hz

Inverter output change

Commutation timing change

Change of compressor speed

5. Current release This function prevents troubles on the electronic parts of the 1) The input current of the outdoor

control

compressor driving inverter.

unit is detected in the inverter

section of the outdoor unit.

This function also controls drive circuit of the compressor

speed so that electric power of the compressor drive circuit

does not exceed the specified value.

2) According to the detected

outdoor temperature, the

specified value of the current is

selected.

Outdoor temp. To

Outdoor unit inverter main

3) Whether the current value

exceeds the specified value or

not is judged.

circuit control current

Setup of current release point

4) If the current value exceeds the

specified value, this function

reduces the compressor speed

and controls speed up to the

closest one commanded from the

indoor unit within the range

which does not exceed the

specified value.

High

Operating current ≤

Reduce compressor speed

Current decrease

Setup value

Low

Capacity control continues.

Cooling current

release value

Heating current

release value

Outdoor temp.

6.45A

6.75A

45˚C

40˚C

16˚C

11˚C

44˚C

39˚C

7.72A

15.5˚C

10.5˚C

8.47A

9.22A

10.80A

– 31 –

Item

Operation flow and applicable data, etc.

Description

6. Release protective

control by tempera-

ture of indoor heat

exchanger

1) When temperature of the indoor

heat exchanger drops below 5°C,

the compressor speed is

(Prevent-freezing control for indoor heat exchanger)

In cooling/dry operation, the sensor of indoor heat

exchanger detects evaporation temperature and

controls the compressor speed so that temperature of

the heat exchanger does not exceed the specified

value.

reduced. (P zone)

2) When temperature of the indoor

heat exchanger rises in the

range from 6°C to under 7°C, the

compressor speed is kept.

(Q zone)

Usual cooling capacity control

3) When temperature of the indoor

heat exchanger rises to 7°C or

higher, the capacity control

operation returns to the usual

control in cooling operation.

(R zone)

When the value is

7˚C

6˚C

5˚C

in Q zone, the

compressor speed

is kept.

Reduction of compressor speed

1) When temperature of the indoor

heat exchanger rises in the

range from 50°C to 55°C, the

compressor speed is kept.

(Q zone)

(Prevent-overpressure control for refrigerating cycle)

In heating operation, the sensor of indoor heat ex-

changer detects condensation temperature and controls

the compressor speed so that temperature of the heat

exchanger does not exceed the specified value.

When temperature of the indoor

heat exchanger drops in the

range from 46°C to under 55°C,

the compressor speed is kept.

(Q zone)

Reduction of compressor speed

2) When temperature of the indoor

heat exchanger rises to 55°C or

higher, the compressor speed is

reduced. (P zone)

55˚C

When the value is

50˚C

3) When temperature of the indoor

heat exchanger does not rise to

50°C, or when it drops below to

46°C, the capacity control

operation returns to the usual

control in heating operation.

(R zone)

in Q zone, the

compressor speed

is kept.

46˚C

Usual heating capacity control

– 32 –

Item

Operation flow and applicable data, etc.

Description

7. Quick heating

control

This function quickens the starting of heating opera-

tion when indoor/outdoor temperature is low.

(Available only in heating operation)

When the following conditions are

satisfied, winding is heated by output

varied by the outdoor heat exchanger

temperature.

When indoor temperature is low, this function stores

the heat by heating winding depended on the outdoor

temperature and then it enables the hot air blowing

out quickly.

Condition 1 :

The previous operation was heating.

Condition 2 :

In case of operation stop

2 hours passed after operation stop.

Condition 3 :

The room temperature is 20°C or lower.

The previous operation was heating and

2 hours passed after the operation had stopped.

The indoor temperature sensor detects

the room temperature.

YES

If the detected room temperature is 20°C

or lower, the outdoor heat exchanger

temperature sensor detects the outdoor

heat exchanger temperature. As shown in

the left figure, winding of the compressor

is heated for each division of the tempera-

ture ( for each outdoor temperature) and

the heat is stored.

Winding is not heated.

20˚C

Heating output for winding

OFF

–1˚C

–3˚C

20W or equivalent

–6˚C

–8˚C

8. Defrost control

(This function removes frost adhered to the outdoor

The necessity of defrost operation is

detected by the outdoor heat exchanger

temperature. The conditions to detect the

necessity of defrost operation differ in A,

B, or C zone each. (Table 1)

(Only in heating heat exchanger.)

operation)

The temperature sensor of the outdoor heat ex-

changer (Te sensor) judges the frosting status of the

outdoor heat exchanger and the defrost operation is

performed with 4-way valve reverse defrost system.

• Defrost operation in A to C zones

1) Stop operation of the compressor for

20 seconds.

Start of heating operation

2) Invert (ON) 4-way valve 10 seconds

after stop of the compressor.

Operation time

(Minute)

0’ 10’ 15’

27’40”

34’

3) The outdoor fan stops at the same time

when the compressor stops.

–5˚C

4) When temperature of the indoor heat

exchanger becomes 38°C or lower,

stop the indoor fan.

C zone

–7˚C

A zone

• Returning conditions from defrost

operation to heating operation

–20˚C

B zone

1) Temperature of outdoor heat exchanger

rises to +8°C or higher.

2) Temperature of outdoor heat exchanger

* The minimum value of Te sensor 10 to 15 minutes

after start of operation is stored in memory as Te0.

is kept at +5°C or higher for 80 seconds.

3) Defrost operation continues for

15 minutes.

Table 1

1) Stop operation of the compressor for

approx. 50 seconds.

When Te0 - TE ≥ 2.5 continued for 2 minutes in A zone,

A zone

defrost operation starts.

When the operation continued for 2 minutes in B zone,

defrost operation starts.

2) Invert (OFF) 4-way valve approx. 40

seconds after stop of the compressor.

B zone

C zone

When Te0 - TE ≥ 3 continued for 2 minutes in C zone,

defrost operation starts.

3) The outdoor fan starts rotating at the

same time when the compressor starts.

– 33 –

Item

Operation flow and applicable data, etc.

Description

9. Louver control

This function controls the air direction of the indoor unit.

1) Louver

position

• The position is automatically controlled according to the operation mode (COOL/HEAT).

• The set louver position is stored in memory by the microcomputer, and the louver returns to the

stored position when the next operation is performed. (Cooling/heating memory position)

The angle of the louver is indicated as the horizontal angle is 0°.

When the louver closes fully, it directs approx. 49° upward.

Horizontal

(0˚)

Louver angle

1) Louver position in cooling operation

Powerful

Room temp. (Ta) < Set temp. (Tsc) + 3.5 Room temp. (Ta) ≥ Set temp. (Tsc) + 3.5

Initial setting of “Cooling storage position” Initial setting of “Cooling storage position” “Inclined blowing”

Louver : Directs downward (9˚)

Louver : Directs downward (14˚)

YES

Powerful

operation

Cooling memory

Cooling/AUTO

(COOL)/DRY operation

Room temp. ≥

Set temp. +3.5

position

Room temp. ≥ Set temp. +3.5

YES

Cooling memory

position

Inclined

blowing

2) Louver position in heating operation

ECO operation

Heating operation/

AUTO (HEAT)

Room temp. (Ta) < Set temp. (Tsc) – 3

Room temp. (Ta) ≥ Set temp. (Tsc) – 3

or 25 minutes after start of operation

Initial setting of “Heating storage position” “Heating storage position”

“Cooling storage position”

Louver : Directs downward (9˚)

Louver : Directs downward (76˚)

YES

ECO

operation

Room temp. ≥

Set temp. –3.0

Horizontal

position

Heating operation

Room temp. ≥ Set temp. –3.0

YES

Heating memory

position

Heating memory

position

2) Air direction adjustment

• The louver position can

be arbitrarily set up by

pressing [FIX] button.

Air direction

Horizontal

blowing

Inclined

blowing

Blowing

downward

Inclined

blowing

Horizontal

blowing

3) Swing

• Swing operation is performed in width 35° with the stop position as

• Swing

the center.

When pressing

[SWING] button during

operation, the louver

starts swinging.

• If the stop position exceeds either upper or lower limit position,

swing operation is performed in width 35° from the limit which the

stop position exceeded.

– 34 –

Item

Operation flow and applicable data, etc.

Description

10. ECO

When pressing [ECO] button on the remote controller, a quiet

operation and mild operation is performed by reducing the fan speed and

the compressor speed.

This function operates the air conditioner with the difference

between the set and the room temperature as shown in the

following figure.

1) The room temperature (Tao) at

the start time of DRY operation is

detected.

The time correction is performed for 8 minutes each.

(However, the first correction is performed 150 seconds after

start of the operation.)

2) According to difference between

the room temperature and the

set temperature (Tsc), the

operation starts with the condi-

tions shown in the left figure.

Set temp.

Zone

Frequency

DRY max

Fan

L+ (W7)

Time correction

[˚C]

(Tsc) = Set temp. on remote

controller (Ts) + (0.0 to 1.0)

*12

*11

*10

+4.0

+3.5

+3.0

+2.5

+2.0

+1.5

+1.0

+0.5

TSC

–0.5

–1.0

3) If the room temperature is down

by 2°C or more, turn off the

compressor.

+ 1

L (W6)

COOL min

L– (W5)

± 0

UL (W4)

–1 zone: min 1

–2.0

OFF

* 12 (DRY max - COOL min) /6 x 5 + COOL min

* 11 (DRY max - COOL min) /6 x 4 + COOL min

* 10 (DRY max - COOL min) /6 x 3 + COOL min

* 9 (DRY max - COOL min) /6 x 2 + COOL min

* 8 (DRY max - COOL min) /6 x 1 + COOL min

1) The indoor fan speed is con-

trolled within (W7) as maximum

value.

30 minutes

→ Time Compressor

speed

0Hz

2) Setting the compressor speed to

Max. 52Hz, the temperature zone

in which the operation can be

performed with Max. 16Hz is

gradually widened after 30

minutes passed when starting

ECO operation.

–0.5

–1.0

–1.5

–2.0

–2.5

–3.0

–4.0

–5.0

–6.0

–7.0

–8.0

–9.0

A zone

16Hz

3) The louver position is set

horizontally (Standard cooling

position) when the room tem-

perature comes close to the set

temperature or when 25 minutes

passed after starting ECO

operation.

B zone

16 to 52Hz

–10.0

–11.0

C zone

52Hz

– 35 –

Item

Operation flow and applicable data, etc.

Description

11. Temporary Pressing [RESET] button starts the temporary opera-

1) When pressing [RESET] button, the

temporary [AUTO] operation starts.

operation

tion of [AUTO] operation. When keeping [RESET]

button pressed for 10 seconds or more, the temporary

[COOL] operation is performed.

2) When keeping [RESET] button pressed

for 3 seconds or more, Pi, Pi, Pi sound is

heard and [AUTO RESTART] control is

changed.

YES

3) When keeping [RESET] button pressed

for 10 seconds or more, “Pi” sound is

heard and the temporary [COOL]

operation starts.

Press RESET button.

Filter lamp ON

Did you press [RESET] button

for 3 seconds or more?

Temporary [AUTO] operation

4) If the filter lamp goes on, press [RESET]

button to go off the filter lamp, and then

press [RESET] button again.

YES

Did you press [RESET] button

for 10 seconds or more?

5) To stop the temporary operation, press

the button again.

Switch to [AUTO RESTART] control.

Temporary [COOL] Operation

12. Air

purifying

This function generates nagative ion while cleaning the air in the room.

If air purifier-ON signal is received while the air conditioner stops, the air purifier starts operation,

and if it is received while the air conditioner operates, the air conditioner and the air purifier start

operation.

control

The air ion generator operates linked with the air purifying operation.

* When the previous operation was the

operation of air conditioner + air purifier,

Operation button

Present status

Stop

PURE button

Air purifier

Air conditioner

AC operation*

AC + Air purifier

All stop

an operation of air conditioner + air purifier

starts by pushing AC button on the remote

controller.

(Operation of air conditioner + air purifier

is stored in memory.)

Air purifier only

Air conditioner

Joint use of AC and air purifier

Stop (All)

AC + Air purifier

AC operation

All stop

*1 Swing is available

Louver*1

Fan speed *2

*2 Fan speed is Fan Auto mode varies in

order, (M + 1) → (L) → (L–) → (SL).

Air purifying operation

Cooling position

AUTO, L, L+, M, M+, H

AC + Air purifying operation Follows to AC operation Follows to AC operation

Sending air purifier-ON

Sending air purifier-OFF

Air conditioner stops

Air conditioner operates

Air purifier operates

Air conditioner +

Air purifier operate

Operation lamp ON

Start of air purifier-ON

Operation lamp OFF

Fan stop

Filter-OFF

Memory position

of louver/COOL

Air conditioner +

air purifier operate

Air conditioner operates

Air purifier-OFF

Louver close

All stop

Fan ON

Air purifier ON

Air purifying operation

– 36 –

Item

Operation flow and applicable data, etc.

Description

1. Purpose

12. Air purifying control [Detection of abnormality]

Purifying operation

The air purifying control function is to

alert the user to trouble in the ionizing or

air purifying operation.

2. Description

Trouble is determined to have occurred

(indicated by the FILTER indicator) in the

following four cases.

YES

Total operation

time 1000H

1) When a count of 1000H has been

reached on the timer

Purifier power ON

2) When the panel switch has been set to

OFF by the opening of the air inlet

grile, etc.

Error input

3) When an abnormal discharge caused

by a symptom such as the build-up of

dirt has been detected while the air

purifier is ON

YES

Purifier power ON

1 minute or less

Filter lamp-OFF

continues.

YES

4) When the electric dust collector has

not been installed correctly

Purifier power OFF

Filter lamp ON

* Trouble case (2) or (3) is deemed to

have occurred when the action

concerned continues for more than

one second.

Purifier power ON

after 10 minutes

from the error input.

Purifier power OFF

3. Operation

The sequence that FILTER indicator is

turned on are described in the left

flowchart.

Filter lamp ON

Error input

YES

1) When 1000H timer counts up, the

FILTER indicator keeps lighting even if

the operation is stopped by the remote

controller.

Purifier power OFF

The timer is stored in memory of the

microcomputer, and the operation time

is cleared by filter RESET button on

the indoor unit or a power failure.

(FILTER indicator goes off.)

1) Reset by RESET button.

2) Reset by RESET button or by the stop direction

from the remote controller.

2) A trouble detected within 1 minute

after activation of the air is immedi-

ately judged as an error and the

FILTER indicator goes on.

* When the breaker is turned [ON] (In restart time

after power failure) or RESET button is pressed

while the FILTER indicator is turned on, the air

purifier is not turned on until the integrated

operation time of the indoor fan exceeds 1 hour

after operation start (It is nor the air purifier

operation time).

It is the safety measures considering an incom-

plete drain when electric dust collector has been

cleaned with water.

3) In case that 1 minute passed after

activation of the purifier, the purifier is

turned off while the PURE indicator

keeps ON. After 10 minutes passed,

restart the purifier and an error is

judged again.

13. Discharge temperature control

1. Purpose

This function detects error on the

refrigerating cycle or error on the com-

pressor, and performs protective control.

Td value

Control operation

Judges as an error and stops the compressor.

Reduce the compressor speed.

117°C

112°C

108°C

105°C

2. Operation

Reduce slowly compressor speed.

Keeps the compressor speed.

• Control of the compressor speed

The speed control is performed as

described in the left table based upon

the discharge temperature.

If the operation is performed with lower speed than one

commanded by the serial signal, speed is slowly raised

up to the commanded speed.

98°C

Operates with speed commanded by the serial signal.

– 37 –

Item

Operation flow and applicable data, etc.

Description

14. Pulse motor

valve (P.M.V.)

control

This function controls throttle amount of the

refrigerant in the refrigerating cycle.

1) When starting the operation, move the

valve once until it fits to the stopper.

(Initialize)

According to operating status of the air conditioner,

this function also controls the open degree of valve

with an expansion valve with pulse motor.

* In this time, “Click” sound may be

heard.

2) Adjust the open degree of valve by super

heat amount. (SH control)

3) If the discharge temperature was exces-

sively up, adjust the open degree of valve

so that it is in the range of set tempera-

ture.

Starting up

Initialize

(Discharge temp. control)

4) When defrost operation is performed, the

open degree of valve is adjusted accord-

ing to each setup conditions during

preparation for defrost and during defrost

operation (4-way valve is inversed.).

Move to

initial position

5) To turn off the compressor while the air

conditioner stops by control of the

Compressor ON

thermostat or by remote controller, adjust

the open degree of valve to the setup

value before stop of the compressor.

SH control

release control

PMV open degree control

Stop by

remote controller

Room temp. sensor

(Ta sensor) control

Power OFF

Defrost

* SH (Super Heat amount) =

Ts (Temperature of suction pipe of the compressor) –

Tc or Te (Heat exchanger temperature at evaporation side)

* PMV: Pulse Motor Valve

– 38 –

Item

Operation flow and applicable data, etc.

Description

15. Clean operation

1. Purpose

The clean operation is to minimize the

growth of mold, bacteria etc. by running

the fan and drying so as to keep the

inside of the air conditioner clean.

Unit now performing cooling or dry operation

Clean operation

When the cooling or dry operation shuts

down, the unit automatically starts the

clean operation which is then performed

for the specified period based on duration

of the operation which was performed

prior to the shutdown, after which the

clean operation stops.

Press “STOP” button

Only S.CLEAN indicator lights, and clean operation starts

(The clean operation is not performed

after a heating operation.)

2. Operation

Time set now elapses

Operation stops

1) When the stop signal from the remote

controller is received, the S.CLEAN

indicator (green) on the main body

lights, and the clean operation starts.

(Neither the OPERATION indicator nor

the TIMER indicator light.)

2) The period of the clean operation is

determined by the duration of the

operation performed prior to the

reception of the stop code.

• During clean operations: The louver opens

slightly. The indoor fan operates continuously at

a speed of 260 rpm.

3) After the clean operation has been

performed for the specified period, the

unit stops operating.

Clean operation times

Operation mode

Operation time

Clean operation time

No clean operation

performed (0 minutes)

Up to 10 minutes

Cooling: Auto (cooling) Dry From 10 minutes up

to 1 hour

2 hours

4 hours

1 hour or longer

Heating: Auto (heating)

Auto (fan only)

Shutdown

No clean operation performed

• To stop an ongoing clean operation at any time

Press the start/stop button on the remote controller twice during the clean

operation. (After pressing the button for the first time, press it for the

second time without delay (within 10 minutes).)

– 39 –

Item

Operation flow and applicable data, etc.

Description

16. Clean operation Setting the clean operation release

release

* J04 will be near the MCU so take

steps to ensure that it will not be

exposed to excessive levels of

heat.

Add J04 of the indoor P.C. board assembly.

* This cancels the auto restart function.

Also take care to avoid solder

bridging with the surrounding

components.

Hold down the auto operation switch on the indoor unit

for at least 3 seconds but not more than 10 seconds.

The indoor unit’s buzzer emits three beeps, and

the OPERATION indicator flashes at 5 Hz intervals.

This completes the clean operation release setting.

Setting the clean operation

Cut J04 of the indoor P.C. board

* This step may be skipped if the auto restart function

is not required.

Hold down the auto operation switch on the indoor unit

for at least 3 seconds but not more than 10 seconds.

The indoor unit’s buzzer emits three beeps, and

the OPERATION indicator flashes at 5 Hz intervals.

This completes the clean operation setting.

Indoor P.C. board

J04

– 40 –

Item

Operation flow and applicable data, etc.

Description

17. Select switch on

remote controller

1. Purpose

This operation is to operate only one

indoor unit using one remote controller.

2. Description

Press the operation button

on the remote controller.

When operating one indoor unit in a

situation where two indoor units have

been installed in the same room or

nearby rooms, this operation prevents the

remote controller signal from being

received simultaneously by both units,

thus preventing both units from operating.

Select “B” as the setting for

one of the two indoor units and

for the remote controller.

(See below for details.)

YES

Both indoor units

start operation.

3. Operation

The indoor unit on which the remote

controller selection has been set to B

receives the signal of the remote control-

ler also set to B.

(At the factory the remote controller

selection is set to A on all the indoor

units. There is no A setting display.)

Unnecessary set

[Remote controller select]

Setting the remote controller

Switching between A and B is enabled by cutting the jumper wire

inside the battery box using pliers.

1) Slide open the remote controller cover and remove the

batteries.

HiPOWER

ECO

MEMO

2) Cut the jumper wire inside the battery compartment using

nippers.

1 3 5 9H

SWING

CLR

FIX

FAN

SLEEP

Jumper wire

• The jumper wire should not remain in contact after being cut.

Also, be careful not to let plastic scraps, jumper wire cuttings

or other debris enter the inside of the remote controller.

SET

OFF

CLOCK

RESET

CHECK

3) Insert the batteries. “B” appears in the remote controller

display.

* Even after the jumper wire has been cut, switching between

A and B is still possible by pressing the CHECK button and

FIX button together.

The A or B setting, which was switched by pressing the

CHECK button and FIX button together, is restored to the

setting established prior to the switching when the battery is

replaced or the RESET button is pressed.

Setting the selector switch on the main unit

• Remove the front panel, and then set the selector switch to “B”.

• After making the switch setting, remount the front panel.

Cutting direction

Position of remote controller selector switch

When switching between

settings “A” and “B”, always

switch the indoor unit board and

the remote controller as a pair.

(Otherwise, the indoor unit will

not accept the remote

controller’s signals.)

Selector switch

– 41 –

9-3. Auto Restart Function

This indoor unit is equipped with an automatic restarting function which allows the unit to restart operating with

the set operating conditions in the event of a power supply being accidentally shut down.

The operation will resume without warning three minutes after power is restored.

This function is not set to work when shipped from the factory. Therefore it is necessary to set it to work.

9-3-1. How to Set the Auto Restart Function

To set the auto restart function, proceed as follows:

The power supply to the unit must be on ; the function will not set if the power is off.

Press the [RESET] button located in the center of the front panel continuously for three seconds.

The unit receives the signal and beeps three times.

The unit then restarts operating automatically in the event of power supply being accidentally shut down.

• When the unit is standby (Not operating)

Operation

Motions

Press [RESET] button for more than

three seconds. (Less than 10 seconds)

The unit is on standby.

↓

The unit starts to operate.

The green indicator is on.

↓

After approx. three seconds,

The unit beeps three times

and continues to operate.

The green indicator flashes

for 5 seconds.

If the unit is not required to operate at this time, press [RESET]

button once more or use the remote controller to turn it off.

• When the unit is in operation

Operation

Motions

Press [RESET] button for more than

three seconds. (Less than 10 seconds)

The unit is in operation.

The green indicator is on.

↓

The unit stops operating.

The green indicator is turned off.

↓

After approx. three seconds,

The unit beeps three times.

The green indicator flashes

for 5 seconds.

If the unit is required to operate at this time, press [RESET] button

once more or use the remote controller to turn it on.

• When the unit is turned on by this function, the louver will not swing even though it was swinging automatically

before shutting down.

• While the filter check indicator is on, the RESET button has the function of filter reset button.

– 42 –

9-3-2. How to Cancel the Auto Restart Function

To cancel auto restart function, proceed as follows :

Repeat the setting procedure : the unit receives the signal and beeps three times.

The unit will be required to be turned on with the remote controller after the main power supply is turned off.

• When the system is on stand-by (not operating)

Operation

Motions

Press [RESET] button for more than

three seconds. (Less than 10 seconds)

The unit is on standby.

↓

The unit starts to operate.

The green indicator is on.

↓

After approx. three seconds,

The unit beeps three times and continues to operate.

If the unit is not required to operate at this time, press [RESET]

button once more or use the remote controller to turn it off.

• When the system is operating

Operation

Motions

Press [RESET] button for more than

three seconds. (Less than 10 seconds)

The unit is in operation.

The green indicator is on.

↓

The unit stops operating.

The green indicator is turned off.

↓

After approx. three seconds,

The unit beeps three times.

If the unit is required to operate at this time, press [RESET] button

once more or use the remote controller to turn it on.

9-3-3. Power Failure During Timer Operation

9-4. FILTER Indicator

When the unit is turned off because of power failure

during timer operation, the timer operation is can-

celled. In that case, set the timer operation again.

When the elapsed time reaches 1000 hours after air

purifier operation, the FILTER indicator lights.

After cleaning the filters, turn off the FILTER indicator.

NOTE :

The Everyday Timer is reset while a command signal

can be received from the remote controller even if it

stopped due to a power failure.

9-4-1. How to Turn Off FILTER Indicator

Press [RESET] button on the indoor unit.

NOTE :

If [RESET] button is pushed while the FILTER indica-

tor is not lit, the indoor unit will start the automatic

operation.

When you want a temporary operation while the

FILTER lamp lights, press [RESET] button to turn off

the FILTER lamp. (See page 36)

– 43 –

9-5. Remote Controller and Its Fuctions

9-5-1. Parts Name of Remote Controller

Cancel button (CLR)

Press this button to cancel the ON timer and OFF

timer. (A receiving beep is heard.)

Infrared signal emitter

Transmits signal to the indoor unit.

button

High power button (Hi POWER)

Press this button to start high power operation.

Press the button to start operation.

(A receiving beep is heard.)

Press the button again to stop operation.

(A receiving beep is heard.)

Memory button (MEMO)

Press this button to ready for storing the settings.

Hold down the button for more than 3 seconds to

store the setting indicated on the remote controller

If no receiving sound is heard from the indoor unit,

press the button twice.

and until the

mark is displayed.

Mode select button (MODE)

Press this button to select a mode.

14 Automatic operation button (AUTO)

Each time you press the button, the modes cycle in

order from A : Auto changeover control,

Press this button to operate the air conditioner

automatically. (A receiving beep is heard.)

: Cool,

: Dry,

: Heat and back to A.

Economy button (ECO)

Press this button to operate the air conditioner

economically.

(A receiving beep is heard.)

TEMP

Temperature button (

)

.. The temperature setting is increased to 30°C.

PRESET button

Press this button to operate the air conditioner to

the settings stored using the MEMO button.

.. The temperature setting is reduced to 17°C.

(A receiving beep is heard.)

Fan speed button (FAN)

Press this button to select the fan speed.

When you select AUTO, the fan speed is automati-

cally adjusted according to the room temperature.

PURE button (PURE)

Press this button to start the electrical air purifying

operation.

Press the button again to stop operation.

You can also manually select the desired fan speed

from five available settings.

Sleep time button (SLEEP)

Press this button to start the sleep timer (OFF

timer) operation.

(LOW , LOW⁺

HIGH

, MED

) (A receiving beep is heard.)

, MED⁺

Auto louver button (SWING)

Press this button to swing the louver.

(A receiving beep is heard.)

You can select the OFF timer time from among four

settings (1, 3, 5 or 9 hours).

Press this button again to stop the louver from

swinging. (A receiving beep is heard.)

Set louver button (FIX)

Press this button again to adjust the air flow

direction. (A receiving beep is heard.)

ON timer button (ON)

Use this button to change the clock and ON timer

times.

To move up the time, press of the “ON

”

button.

To move down the time, press of the “ON

button.

”

AUTO

PURE

TEMP

OFF timer button (OFF)

Use this button to change the OFF timer times.

MODE

PRESET

OFF

To move up the time, press of the “OFF

button.

”

OFF

To move down the time, press of the “OFF

button.

”

HiPOWER

ECO

MEMO

1 3 5 9H

SWING

CLR

FIX

FAN

SLEEP

Reserve button (SET)

Press this button to store the time settings.

(A receiving beep is heard.)

SET

OFF

CLOCK

RESET

CHECK

– 44 –

9-5-2. Name and Functions of Indications on Remote Controller

[Display]

All indications, except for the clock time indicator, are displayed by pressing the button.

Transmission mark

TIMER and clock time indicator

The time setting for timer operation or the clock

time is indicated.

This transmission mark indicates when the

remote controller transmits signals to the indoor

unit.

The current time is always indicated except

during TIMER operation.

Mode indicator

Indicates the current operation mode.

(AUTO : Automatic control, A : Auto changeover

Hi-POWER indicator

Indicates when the Hi-POWER operation starts.

control,

: Cool,

: Dry,

: Heat)

Press the Hi-POWER button to start and press it

again to stop the operation.

Temperature indicator

Indicates the temperature setting.

(17°C to 30°C)

(MEMORY) indicator

Flashes for 3 seconds when the MEMO button is

pressed during operation.

PURE indicator

Shows that the electrical air purifying operation is

in progress.

The

mark is shown when holding down the

button for more than 3 seconds while the mark is

flashing.

FAN speed indicator

Indicates the selected fan speed.

Press another button to turn off the mark.

ECO indicator

Indicates when the ECO is in activated.

AUTO or five fan speed levels

(

LOW , LOW⁺

HIGH

, MED

, MED⁺

Press the ECO button to start and press it again

to stop operation.

) can be shown.

Indicates AUTO when the operating mode is

A, B change indicator remote controller

either AUTO or

: Dry.

When the remote controller switching function is

set, “B” appears in the remote controller display.

(When the remote controller setting is “A”, there is

no indication at this position.)

AUTO

• In the illustration, all indications are shown for

9 7

purposes of explanation.

During operation, only the relevant indicators are

shown on the remote controller.

– 45 –

9-6. Hi-POWER Mode

([Hi-POWER] button on the remote controller is pressed)

When [Hi-POWER] button is pressed while the indoor unit is in Auto, Cooling or Heating operation, Hi-POWER

mark is indicated on the display of the remote controller and the unit operates as follows.

1. Automatic operation

• The indoor unit operates in according to the current operation.

2. Cooling operation

• The preset temperature drops 1°C.

(The value of the preset temperature on the remote controller does not change.)

• If the difference between the preset temperature and the room temperature is big, the horizontal louver

moves to the Hi-POWER position automatically.

Then when the difference between them gets smaller, the horizontal louver returns automatically.

3. Heating operation

• The preset temperature increases 2°C.

(The value of the preset temperature on the remote controller does not change.)

4. The Hi-POWER mode can not be set in Dry operation

– 46 –

10. INSTALLATION PROCEDURE

10-1. Safety Cautions

For the rear left and left piping

Wall

Hook

47 mm or more

Installation plate

Hook

140 mm or more

Insert the cushion between

the indoor unit and wall, and

tilt the indoor unit for better

installation work.

74 mm

or more

Hook

Mounting screw

Do not allow the drain hose

to become slack.

Cut the piping

hole slightly

sloped

Zeolite-plus filter

Z Shield pipe

(for extension

drain hose)

Make sure the drain hose is

sloped downward.

Plasma pure filter

The auxiliary piping can be

connected at the left, rear left,

rear right, right, bottom right or

bottom left as shown below.

Air filters

80 mm or more only

when unobstructed to

the front and both sides

Wireless

remote controller

Right

100 mm or more

from wall

50 mm or more

from wall

In principle,

leave open

Rear

right

Left

Bottom right Rear left

(C)

Bottom left

(D)

Remote controller holder

(Mounting holes on both

left and right sides)

As shown in the figure, position power cord and

connecting cable downward, and lead out along

piping connection port.

200 mm

or more

(B)

(A)

Remote controller

holder mounting screw

Insulate the refrigerant pipes

separately, not together.

250 mm or more

from wall

When installing the outdoor unit,

leave open in at least two of

directions (A), (B), (C) and (D)

shown in the right figure.

Power cord

Extension drain hose

(Option: RB-821SW)

Ensure sufficient space

to allow drainage

6 mm thick heat resisting

polyethylene foam

Before installing the wireless remote controller

• With the remote controller cover

Cover

removed, correctly load the

supplied batteries while

observing their polarity.

Batteries

Wireless remote controller

– 47 –

10-2. Optional Parts, Accessories andTools

10-2-1. Optional Installation Parts

Part Code

Parts name

Q’ty

Refrigerant piping

Liquid side (Outer diameter)

6.35 mm

Indoor unit name

RAS-B10GKVP-E, B13GKVP-E

RAS-B16GKVP-E

Gas side (Outer diameter)

9.52 mm

1 ea.

6.35 mm

12.7 mm

Shield pipe (for extension drain hose) (polyethylene foam, 6 mm thick)

Attachment bolt arrangement of outdoor unit

Elongated

drain hole

• Secure the outdoor unit with the attachment bolts and

nuts if the unit is likely to be exposed to a strong wind.

Suction side

⁽ꢀ ⁾

• Use Ø8 mm or Ø10 mm anchor bolts and nuts.

If it is necessary to drain the defrost water, attach drain

nipple to the base plate of the outdoor unit before

installing it.

Drain hole

⁽ꢁ ⁾

Diffuser

10-2-2. Accessory and Installation Parts

Part No.

Part name (Q’ty)

Installation plate × 1

Wireless remote control × 1

Battery × 2

Part No.

Part name (Q’ty)

Part No.

Part name (Q’ty)

ꢀ

‰

Drain nipple* × 1

(RAS-10GAVP-E,

13GAVP-E, 16GAVP-E)

Zeolite-plus filter × 1

‚

„

†

‡

Water-proof rubber cap* × 2

(RAS-10GAVP-E,

13GAVP-E, 16GAVP-E)

Plasma pure filter × 1

Parts marked with asterisk (*) are

packaged with the outdoor unit.

Name

Mounting screw Ø4 × 25L × 6

Owner’s manual

Installation manual

Important information and warning*

Remote control

holder mounting screw

Ø3.1 × 16L × 2

Remote control holder × 1

B/W strips*

(Energy efficiency labels)

This model is not equipped with an extension drain hose.

– 48 –

10-2-3. Installation/Servicing Tools

Changes in the product and components

In the case of an air conditioner using R410A, in order to prevent any other refrigerant from being charged

accidentally, the service port diameter of the outdoor unit control valve (3 way valve) has been changed.

(1/2 UNF 20 threads per inch)

• In order to increase the pressure resisting strength of the refrigerant piping flare processing diameter and size

of opposite side of flare nuts has been changed. (for copper pipes with nominal dimensions 1/2 and 5/8)

New tools for R410A

Applicable to R22 model

Changes

As pressure is high, it is impossible to measure by means of

conventional gauge. In order to prevent any other refrigerant from

being charged, each port diameter has been changed.

Gauge manifold

In order to increase pressure resisting strength, hose materials

and port size have been changed (to 1/2 UNF 20 threads per inch).

When purchasing a charge hose, be sure to confirm the port size.

Charge hose

As pressure is high and gasification speed is fast, it is difficult to

read the indicated value by means of charging cylinder, as air

bubbles occur.

Electronic balance

for refrigerant charging

The size of opposite sides of flare nuts have been increased.

Incidentally,

a common wrench is used for nominal diameters 1/4 and 3/8.

Torque wrench

(nominal diam. 1/2, 5/8)

By increasing the clamp bar’s receiving hole, strength of spring in

Flare tool (clutch type)

the tool has been improved.

Gauge for projection

adjustment

—

Used when flare is made by using conventional flare tool.

Connected to conventional vacuum pump. It is necessary to use

an adapter to prevent vacuum pump oil from flowing back to the

charge hose. The charge hose connecting part has two ports-one

for conventional refrigerant (7/16 UNF 20 threads per inch) and

one for R410A. If the vacuum pump oil (mineral) mixes with R410A

a sludge may occur and damage the equipment.

Vacuum pump adapter

Gas leakage detector

Exclusive for HFC refrigerant.

• Incidentally, the “refrigerant cylinder” comes with the refrigerant designation (R410A) and protector coating in the

U. S’s ARI specified rose color (ARI color code: PMS 507).

• Also, the “charge port and packing for refrigerant cylinder” require 1/2 UNF 20 threads per inch corresponding to

the charge hose’s port size.

– 49 –

10-3-2. Drilling a Hole and Mounting Instal-

lation Plate

10-3. Indoor Unit

10-3-1. Installation Place

• A place which provides enough spaces around the

indoor unit as shown in the diagram.

Drilling a hole

When install the refrigerant pipes from the rear.

• A place where there are no obstacle near the air

inlet and outlet.

• A place which allows easy installation of the piping

to the outdoor unit.

The center of the

pipe hole

• A place which allows the front panel to be opened.

• The indoor unit shall be installed so that the top of

the indoor unit is positioned at least 2m in height.

Pipe

hole

• Also, avoid putting anything on the top of the

indoor unit.

CAUTION

• Direct sunlight on the indoor unit wireless

receiver should be avoided.

• The microprocessor in the indoor unit should

not be too close to r-f sources.

Fig. 10-3-2

(For details, see the owner's manual.)

1. After determining the pipe hole position on the

^{installation plate (}ð ^{) drill the pipe hole (Ø65}

mm) at a slight downward slant to the outdoor

side.

Remote controller

• Should be placed where there are no obstacles,

such as curtains, that may block the signal.

NOTE :

• When drilling into a wall that contains a metal lath,

wire lath or metal plate, be sure to use a pipe hole

brim ring sold separately.

• Do not install the remote controller in a place

exposed to direct sunlight or close to a heating

source, such as a stove.

• Keep the remote controller at least 1 m away from

the nearest TV set or stereo equipment.

(This is necessary to prevent image disturbances or

noise interference.)

Mounting the installation plate

• The location of the remote controller should be

determined as shown below.

Anchor bolt holes

(Side view)

(Top view)

Indoor unit

Pipe hole

Reception

range

Pipe hole

Reception

range

Remote

controller

Indoor unit

Remote controller

Installation plate

Mounting screw

*: Axial distance

Fig. 10-3-3

Fig. 10-3-1

– 50 –

10-3-3. Electrical Work

When the installation plate is directly

mounted on the wall

1. The supply voltage must be the same as the

rated voltage of the air conditioner.

1. Securely fit the installation plate onto the wall by

screws with the upper and lower catches, that

hold the indoor unit, facing out.

2. Prepare a power source for the exclusive use of

the air conditioner.

2. To mount the installation plate on a concrete wall

use anchor bolts. Drill the anchor bolt holes as

illustrated in the above figure.

NOTE :

• Wire type :

More than H07RN-F or 245IEC66 (1.0mm²)

3. Install the installation plate horizontally and level.

CAUTION

• This appliance can be connected to a main

circuit breaker in either of the following two

ways.

When installing the installation plate with mount-

ing screw, do not use the anchor bolt hole.

Otherwise the unit may fall down and result in

personal injury and property damage.

1. Connection to fixed wiring:

A switch or circuit breaker which discon-

nects all poles and has a contact separa-

tion of at least 3 mm must be incorporated

in the fixed wiring. An approved circuit

breaker or switch must be used.

2. Connection with power supply plug:

Anchor bolt

Attach power supply plug with power cord

and plug it into wall outlet. An approved

power supply cord and plug must be used.

Projection

15mm or less

NOTE :

• Perform wiring work being sure the wire length is

long enough.

Fig. 10-3-4

5 mm dia. hole

10-3-4. Wiring Connection

How to connect the connecting cable

7 Mounting screw

Ø4 × 25L

Wiring the connecting cable can be carried

out without removing the front panel.

Clip anchor

(local parts)

1. Remove the air inlet grille. Open the air inlet grille

upward and pull it toward you.

2. Remove the terminal cover and cord clamp.

Fig. 10-3-5

3. Insert the connecting cable (or as according to

local regulations/codes) into the pipe hole on the

wall.

CAUTION

4. Pull the connecting cable through the cable slot

on the rear panel so that it protrudes about

15 cm out of the front.

Failure to securely install the unit may result in

personal injury and/or property damage if the

unit falls.

5. Insert the connecting cable fully into the terminal

block and secure it tightly with screws.

• In case of block, brick, concrete or similar type

walls, drill 5 mm dia. holes in the wall.

6. Tightening torque: 1.2 N•m (0.12 kgf•m)

7. Secure the connecting cable with the cord clamp.

• Insert clip anchors for the

mounting screws.

‡

8. Attach the terminal cover, rear plate bushing and

air inlet grille on the indoor unit.

NOTE :

• Install the installation plate using mounting screws

between 4 to 6, being sure to secure all four

corners.

– 51 –

10-3-5. Piping and Drain Hose Installation

Piping and drain hose forming

CAUTION

• Be sure to refer to the wiring system diagram

labeled inside the front panel.

• Since condensation results in machine trouble,

make sure to insulate both the connecting pipes

separately.

• Check local electrical regulations for any

specific wiring instructions or limitations.

(Use polyethylene foam as insulating material.)

Terminal cover

Rear right

Rear left

Bottom left

Left

Screw

Cord clamp

Terminal block

Bottom right

Right

Earth wire

Fig. 10-3-10

Connecting cable

1. Die-cutting front panel slit

Cut out the slit on the left or right side of the front

panel for the left or right connection and the slit

on the bottom left or side of thefront panel for the

bottom left or right connection with a pair of

nippers.

Fig. 10-3-6

Terminal block

2. Changing drain hose

For left connection, left-bottom connection and

rear-left connection’s piping, it is necessary to

relocate the drain hose and drain cap.

Fig. 10-3-7

How to remove the drain cap

Clip drain cap with needle-nose pliers, and pull out.

Connecting cable

About 15 cm

Fig. 10-3-8

Fig. 10-3-11

70 mm

How to remove the drain hose

10 mm

Earth line

The drain hose is secured in place by a screw.

Remove the screw securing the drain hose, then pull

out the drain hose.

10 mm

50 mm

Fig. 10-3-9

NOTE :

Screw

Drain hose

WIRE TYPE : more than H07 RN-F or 245 IEC 66.

(1.0mm²)

Fig. 10-3-12

– 52 –

How to attach the drain cap

In case of bottom right or bottom left piping

1. Insert hexagonal wrench (4 mm).

• After making slits on the front panel with a knife or

similar tool, cut them out with a pair of nippers or

an equivalent tool.

Slit

Fig. 10-3-16

4 mm

Fig. 10-3-13

Left-hand connection with piping

2. Firmly insert drain cap.

Bend the connecting pipes so that they are posi-

tioned within 43 mm above the wall surface.

If the connecting pipes are positioned more than

43 mm above the wall surface, the indoor unit may

be unstable.

No gap

Do not apply lubricating oil

(refrigerant machine oil)

when inserting the drain cap.

If applied, deterioration and

drain leakage of the drain

plug may occur.

When bending the connecting pipe, make sure to

use a spring bender to avoid crushing the pipe.

Insert a hexagon

wrench (Ø4mm)

Refer to the table below for the bending

radius of each connection pipe.

Fig. 10-3-14

Outer diameter

6.35 mm

Bending radius

30 mm

9.52 mm

40 mm

How to attach the drain hose

12.7 mm

50 mm

Always use the original screw that secured the

drain hose to the unit. If using a different screw

may cause water to leak.

To connect the pipe after installation of the

unit (figure)

Insert the drain hose firmly until the connector

contacts with the insulation, then secure it in place

using the original screw.

(To the front flare)

220 mm

Gas side

170 mm

CAUTION

Liquid side

Securely insert the drain hose and drain cap;

otherwise, water may leak.

R30 or less (Ø6.35), R40 or less (Ø9. 52), R50 or less (Ø12. 7)

Use polishing (polyethylene core or the like for bending pipe).

Outward form of indoor unit

In case of right or left piping

• After making slits on the front panel with a knife or

similar tool, cut them out with a pair of nippers or

an equivalent tool.

Use a screwdriver handle, etc.

Fig. 10-3-17

NOTE :

If the pipe is incorrectly bent, the indoor unit may be

unstable on the wall.

Slit

After passing the connecting pipe through the pipe

hole, connect the connecting pipe to the auxiliary

pipes and wrap the facing tape around them.

Fig. 10-3-15

– 53 –

10-3-7. Drainage

CAUTION

1. Run the drain hose at a downward sloped angle.

• Bind the auxiliary pipes (two) and connecting

cable with facing tape tightly.

NOTE :

In case of leftward piping and rear-leftward

piping, bind the auxiliary pipes (two) only with

facing tape.

• Hole should be made at a slight downward slant

on the outdoor side.

Do not rise the drain hose.

Do not form the drain hose

into the waved shape.

Indoor unit

Auxiliary pipes

Connecting

cable

50 mm

or more

Installation

plate

Fig. 10-3-18

Do not put the

Do not put the drain

hose end in the

drainage ditch.

drain hose end

• Carefully arrange the pipes so that none of the

into water.

pipes stick out of the rear plate of the indoor unit.

• Carefully connect the auxiliary pipes and

connecting pipes to each other and cut off the

insulating tape wound on the connecting pipe

to avoid double-taping at the joint, moreover,

seal the joint with the vinyl tape, etc.

Fig. 10-3-21

2. Put water in the drain pan and make sure that the

water is being drained outside.

• Since condensation can result in machine

performance trouble, be sure to insulate both

connecting pipes. (Use polyethylene foam as

insulating material.)

3. When connecting extension drain hose, insulate

the connection part of extension drain hose with

shield pipe.

• When bending a pipe, be careful not to crush it.

Shield pipe

10-3-6. Indoor Unit Installation

Drain hose Inside the room

Extension drain hose

1. Pass the pipe through the hole in the wall, and

hook the indoor unit on the installation plate at

the upper hooks.

Fig. 10-3-22

2. Swing the indoor unit to right and left to confirm

that it is firmly hooked on the installation plate.

3. While pressing the indoor unit onto the wall, hook

it at the lower part on the installation plate.

Pull the indoor unit toward you to confirm that it is

firmly hooked on the installation plate.

CAUTION

Install the drain pipe for proper drainage.

Improper drainage can result in water dripping

inside the room.

Hook here

Installation

plate

This air conditioner has been designed to drain

water collected from condensation which forms on

the back of the indoor unit, to the drain pan.

Push (unhook)

Hook

Therefore, do not locate the power cord and other

parts at a high place than the drain guide.

Fig. 10-3-19

• For detaching the indoor unit from the installation

plate pull the indoor unit toward you while pushing

the bottom up at the specified places.

Wall

Drain

guide

Space for

pipes

Push

Fig. 10-3-23

Fig. 10-3-20

– 54 –

10-4. Outdoor Unit

Precautions for adding refrigerant

10-4-1. Installation Place

• Use a scale having a precision with at least 10 g

per index line when adding the refrigerant.

• A place which provides enough space around the

Do not use a bathroom scale or similar instrument.

outdoor unit as shown in the diagram.

• A place which can bear the weight of the outdoor

unit and does not allow an increase in noise level

and vibration.

• Use liquid refrigerant when refilling the refrigerant.

Since the refrigerant is in liquid form, it can fill

quickly.

Therefore, perform the filling operation carefully

and insert the refrigerant gradually.

• A place where the operation noise and discharged

air do not disturb neighbors.

• A place which is not exposed to a strong wind.

• A place free of combustible gases.

CAUTION

• A place which does not block a passageway.

1. Install the outdoor unit without anything

blocking the discharging air.

• When the outdoor unit is to be installed in an

elevated position, be sure to secure its feet.

2. When the outdoor unit is installed in a place

always exposed to strong winds like on the

coast or on a high story of a building, secure

the normal fan operation using a duct or a

wind shield.

• This air conditioner accepts a connection piping

length of up to 25 m.

• There is no need to add refrigerant as long as

the length of the connection piping is 15 m or

less.

3. Especially in windy areas, install the unit to

prevent the admission of wind.

• You will need to add 20 g of refrigerant per meter

of added connection piping for installations

requiring connection piping to be between 16 m

to 25 m.

4. Installation in the following places may result

in trouble.

Do not install the unit in such places.

• A place full of machine oil.

• An allowable height level is up to 10 m.

• A place where the drain water does not cause any

problems.

• A saline-place such as the coast.

• A place full of sulfide gas.

• A place where high-frequency waves are

likely to be generated, such as from audio

equipment, welders, and medical equip-

ment.

Strong

wind

Fig. 10-4-1

– 55 –

10-4-2. Draining the Water

10-4-3. Refrigerant Piping Connection

• Holes are provided on the base plate of the

outdoor unit to ensure that the defrost water

produced during heating operations is drained off

efficiently.

Flaring

1. Cut the pipe with a pipe cutter.

If a centralized drain is required when installing the

unit on a balcony or wall, follow the steps below to

drain off the water.

90˚

Obliquity Roughness

Warp

1. Proceed with water-proofing by installing the

water-proof rubber caps

in the 2 elongated

holes on the base plate of the outdoor unit. [How

to install the water-proof rubber caps]

Fig. 10-4-4

1) Place four fingers into each cap, and insert

the caps into the water drain holes by pushing

them into place from the underside of the

base plate.

2. Insert a flare nut into the pipe, and flare the pipe.

• Projection margin in flaring : A (Unit : mm)

2) Press down on the outer circumferences of

the caps to ensure that they have been

inserted tightly.

Rigid (Clutch type)

Outer dia. of

copper pipe

R410A

tool used

Conventional

tool used

(Water leaks may result if the caps have not

been inserted properly, if their outer circumfer-

ences lift up or the caps catch on or wedge

against something.)

6.35

9.52

12.7

0 to 0.5

1.0 to 1.5

10 Water-proof rubber caps

(supplied with the outdoor unit)

Imperial (Wing nut type)

Outer dia. of

copper pipe

R410A

Base plate

6.35

1.5 to 2.0

2.0 to 2.5

Die

Pipe

9.52

Drain nipple

Fig. 10-4-5

12.7

Fig. 10-4-2

• Flaring size : B (Unit : mm)

2. Install the drain nipple

and a commercially

‰

available drain hose (with 16 mm inside diam-

eter), and drain off the water.

Fig. 10-4-6

(For the position where the drain nipple

installed, refer to the installation diagram of the

indoor and outdoor units.)

‰

–0.4

Outer dia. of copper pipe

R410A

9.1

R22

9.0

• Check that the outdoor unit is horizontal, and

route the drain hose at a downward sloped

angle while ensuring that it is connected tautly.

6.35

9.52

12.7

13.2

16.6

13.0

16.2

Base plate

Drain nipple

Commercially available

• In case of flaring for R410A with the conventional

drain hose

flare tool, pull it out approx. 0.5 mm more than that

of R22 to adjust to the specified flare size.

The copper pipe gauge is useful for adjusting

projection margin size.

Do not use ordinary garden hose, but one can

flatten and prevent water from draining.

Fig. 10-4-3

– 56 –

Tightening Connection

Use a vacuum pump

Align the centers of the connecting pipes and tighten

the flare nut as much as possible with your fingers.

Then tighten the nut with a wrench and torque

wrench as shown in the figure.

Be sure to use a vacuum pump with counter-flow

prevention function so that oil inside the pump does

not flow back into the air conditioner pipes when the

pump stops. (If oil inside the vacuum pump enters

into the air conditioner circuit which uses R410A,

trouble with the refrigeration system may develop.)

Half union

Flare nut

1. Connect the charge hose from the manifold valve

to the service port of the gas side packed valve.

Externally

threaded side

Internally

threaded side

2. Connect the charge hose to the port of the

vacuum pump.

Use a wrench

to secure.

Use a torque wrench

to secure.

3. Open fully the low pressure side handle of the

gauge manifold valve.

Fig. 10-4-7

4. Operate the vacuum pump to begin evacuating.

Perform evacuating for about 15 minutes if the

piping length is 20 meters (15 minutes for 20

meters) (assuming a pump capacity of 27 liters

per minute).

CAUTION

• Do not apply excessive force.

Otherwise, the nut may break.

Confirm that the compound pressure gauge

reading is –101 kPa (–76 cmHg).

(Unit : N·m)

5. Close the low pressure valve handle of gauge

manifold.

Outer dia. of copper pipe

Ø6.35 mm

Tightening torque

14 to 18 (1.4 to 1.8 kgf•m)

33 to 42 (3.3 to 4.2 kgf•m)

50 to 62 (5.0 to 6.2 kgf•m)

6. Open fully the valve stem of the packed valves

(both sides of Gas and Liquid).

Ø9.52 mm

7. Remove the charging hose from the service port.

8. Securely tighten the caps on the packed valves.

Ø12.7 mm

• Tightening torque for connection of flare pipe

Compound

Pressure gauge

pressure

The pressure of R410A is higher than R22.

(Approx. 1.6 times.) Therefore securely tighten the

flare pipes which connect the outdoor unit and the

indoor unit with the specified tightening torque

using a torque wrench.

gauge

-101kPa

Manifold valve

(-76cmHg)

Handle Hi

(Keep full closed)

Handle Lo

Charge hose

(For R410A only)

Charge hose

(For R410A only)

If any flare pipe is

Flare at

indoor unit

side

Vacuum pump

adapter for

incorrectly connected,

it may cause not only

a gas leakage but also

trouble in the

counter-flow

prevention

(For R410A only)

Connecting

pipe

refrigeration cycle.

Vacuum

pump

Packed valve at liquid side

Packed valve at gas side

Flare at

outdoor unit

side

Service port

(Valve core (Setting pin))

Fig. 10-4-8

Fig. 10-4-9

CAUTION

10-4-4. Evacuating

After the piping has been connected to the indoor

unit, perform the air purge.

• IMPORTANT POINTS FOR PIPING WORK

1. Keep dust and moisture from entering the

pipes.

2. Tighten connections carefully (between pipes

and unit).

AIR PURGE

Evacuate the air in the connecting pipes and in

the indoor unit using a vacuum pump.

Do not use the refrigerant in the outdoor unit.

3. Evacuate the air in the connecting pipes

using a VACUUM PUMP.

4. Check for gas leaks at all connections.

For details, see the vacuum pump manual.

– 57 –

Packed Valve handling precautions

• Open the valve stem all the way; but do not try to

open it beyond the stopper.

1 2

• Securely tighten the valve stem cap with torque in

the following table:

Gas side (Ø12.7 mm)

50 to 62 N•m (5.0 to 6.2 kgf•m)

Gas side (Ø9.52 mm)

33 to 42 N•m (3.3 to 4.2 kgf•m)

Connecting

cable

Liquid side (Ø6.35 mm) 14 to 18 N•m (1.4 to 1.8 kgf•m)

Power cord

Earth line

Service port

14 to 18 N•m (1.4 to 1.8 kgf•m)

Fig. 10-4-12

Hexagonal wrench is required.

Model RAS-

10GAVP-E 13GAVP-E 16GAVP-E

220 – 240 V ~50 Hz

Power source

220 V ~60 Hz

Maximum running

current

12 A

Fig. 10-4-10

Installation fuse

rating

25A (D type

)

Power cord

H07RN-F or 245IEC66 (1.5 mm²)

H07RN-F or 245IEC66 (1.0 mm²)

10-4-5. Wiring Connection

1. Remove the valve cover, the electric parts cover

and the cord clamp from the outdoor unit.

Connection cable

2. Connect the connecting cable to the terminal as

identified by the matching numbers on the

terminal block of indoor and outdoor unit.

CAUTION

• Incorrect wiring connection may cause electri-

cal parts to burn out.

3. Insert the power cord and the connecting cable

fully into the terminal block and secure it tightly

with screws.

• Be sure to comply with local regulations/codes

when running the wire from outdoor unit to

indoor unit.

4. Insulate the unused cords (conductors) from

water entering in the outdoor unit. Locate them

so that they do not touch any electrical or metal

parts.

(Size of wire and wiring method etc.)

• Every wire must be securely connected.

5. Secure the power cord and the connecting cable

with the cord clamp.

• This installation fuse (25A D type

must be used for the power supply line.

)

6. Attach the electric parts cover and the valve

cover on the outdoor unit.

• If incorrect or incomplete wiring is carried out,

fire or smoke may result.

• Prepare the power supply for the exclusive use

of the air conditioner.

Stripping length of connecting cable

• This product can be connected to the main

breaker.

Terminal block

Connection to fixed wiring:

A switch which disconnects all poles and has a

contact separation of at least 3 mm must be

incorporated in the fixed wiring when connect-

ing to a main breaker circuit.

Connecting cable

Power cord

Fig. 10-4-11

– 58 –

10-5-4. Remote Controller Selector Switch

Setting

10-5. Test Operation

10-5-1. Gas Leak Test

• Check the flare nut connections for gas leaks with

a gas leak detector and/or soapy water.

Remote controller selector switch

• If two indoor units are installed in the same room

or adjoining rooms, the second unit can inadvert-

ently receive a remote controller signal and start

operation when operating the first unit.This can be

prevented by setting one of the indoor units and

the corresponding remote controller to the B

setting (the A setting is the default setting).

Valve cover

Check places for

flare nut connections

(indoor unit)

1. Setting the selector switch on the main unit

Electric parts

• Remove the front panel, and then set the

selector switch to “B”.

• After making the switch setting, remount the

front panel.

Check places

for outdoor unit

2. Setting the remote controller

Fig. 10-5-1

1) Slide open the remote controller cover and

remove the batteries.

2) Cut the jumper wire inside the battery

compartment using nippers.

10-5-2. Test Operation

To test the system, press and hold RESET button for

10 sec. (There will be one short beep.)

• The jumper wire should not remain in

contact after being cut. Also, be careful

not to let plastic scraps, jumper wire

cuttings or other debris enter the inside of

the remote controller.

3) Insert the batteries. “B” appears in the

remote controller display.

3. Check that the indoor unit can be operated by

the modified remote controller.

Position of remote controller selector switch

Fig. 10-5-2

10-5-3. Auto Restart Setting

This product is designed so that, after a power

failure, it can restart automatically in the same

operating mode as before the power failure.

Selector switch

Fig. 10-5-3

Information

The product was shipped with Auto Restart

function in the OFF position.

Turn it ON as required.

Cutting direction

Jumper wire

HiPOWER

ECO

MEMO

5 9H

SWING

CLR

FIX

FAN

SLEEP

SET

OFF

CLOCK

RESET

CHECK

When switching between settings “A” and

“B”, always switch the indoor unit board

and the remote controller as a pair.

(Otherwise, the indoor unit will not

How to Set the Auto Restart

• Press and hold the RESET button for about 3

seconds. After 3 seconds, three short electric

beeps will be heard to inform you that the Auto

Restart has been selected.

accept the remote controller’s signals.)

• To cancel the Auto Restart, follow the steps

described in the section Auto Restart Function on

Owner’s Manual.

Fig. 10-5-4

– 59 –

11. HOW TO DIAGNOSE THE TROUBLE

The pulse motor circuits are mounted to both indoor and outdoor units. Therefore, diagnose troubles according

to the trouble diagnosis procedure as described below. (Refer to the check points in servicing written on the

wiring diagrams attached to the indoor/outdoor units.)

Table 11-1

No.

Troubleshooting Procedure

First Confirmation

Page

No.

Troubleshooting Procedure

How to Check Simply the Main Parts

Troubleshooting

Page

Primary Judgment

Judgment by Flashing LED of Indoor Unit

Self-Diagnosis by Remote Controller

Judgment of Trouble by Every Symptom

How to Diagnose Trouble in Outdoor Unit

How to Check Simply the Main Parts

How to Simply Judge Whether Outdoor

Fan Motor is Good or Bad

u Precautions when handling the new inverter (3DV Inverter)

CAUTION: HIGH VOLTAGEN

The high voltage circuit is incorporated.

Be careful to do the check service, as the electric shock may be caused in case of touching parts on the

P.C. board by hand.

The new inverter (3DV inverter) will be incorporated starting with this unit.

(3DV: 3-shunt Discrete Vector control)

u The control circuitry has an uninsulated construction.

G-Tr

Compressor

Fan motor

FET

(6IN1)

Photocoupler

Shared potential

MCU

Hall device

Photocoupler

JAVP-E series (insulated type)

Compressor

Fan motor

IGBT × 6

Shared potential

Driver

Amplifier

FET × 6

MCU

Driver

Amplifier

GAVP-E, EAVP-E series (uninsulated type)

Fig. 11-1

– 60 –

CAUTION

A high voltage (equivalent to the supply voltage) is also energized to ground through the

sensors, PMV and other low-voltage circuits. The sensor leads and other wires are covered

with insulated tubes for protection. Nevertheless, care must be taken to ensure that these

wires are not pinched.

Take sufficient care to avoid directly touching any of the circuit parts without first turning off

the power.

At times such as when the circuit board is to be replaced, place the circuit board assembly in

a vertical position.

Laying the board flat on an electrically conductive object (such as the top panel of the air conditioner's

outdoor unit) while a charge is still retained by the electrolytic capacitors of the inverter's main circuit may

cause short-circuiting between the electrolytic capacitors and secondary circuit components and result in

damage to the components.

Sensor leads

Fig. 11-2

Do NOT lay the circuit board assembly flat.

u Precautions when inspecting the control section of the outdoor unit

NOTE :

A large-capacity electrolytic capacitor is used in the outdoor unit controller (inverter).Therefore, if the power

supply is turned off, charge (charging voltage DC280 to 380V) remains and discharging takes a lot of time.

After turning off the power source, if touching the charging section before discharging, an electrical shock may

be caused. Discharge the electrolytic capacitor completely by using soldering iron, etc.

< Discharging method >

1. Remove the inverter cover (plating) by opening four mounting claws.

2. As shown below, connect the discharge resistance (approx. 100Ω40W) or plug of the soldering iron to

voltage between + – terminals of the C14 (“CAUTION HIGH VOLTAGE” is indicated.) electrolytic capacitor

(500µF/400V) on P.C. board, and then perform discharging.

Discharging position

(Discharging period

10 seconds or more)

Plug of

soldering iron

Inverter cover

P. C. board

(Soldered surface)

Fig. 11-3

– 61 –

11-1. First Confirmation

11-1-1. Confirmation of Power Supply

Confirm that the power breaker operates (ON) normally.

11-1-2. Confirmation of Power Voltage

Confirm that power voltage is AC 220–230–240 ± 10%.

If power voltage is not in this range, the unit may not operate normally.

11-1-3. Operation Which is not a Trouble (Program Operation)

For controlling the air conditioner, the program operations are built in the microcomputer as described in the

following table.

If a claim is made for running operation, check whether or not it meets to the contents in the following table.

When it does, we inform you that it is not trouble of equipment, but it is indispensable for controlling and main-

taining of air conditioner.

Table 11-1-1

No.

Operation of air conditioner

Description

When power breaker is turned “ON”, the

operation indicator (Green) of the indoor

unit flashes.

The OPERATION lamp of the indoor unit flashes when

power source is turned on. If [START/STOP] button is

operated once, flashing stops.

(Flashes also in power failure)

Compressor may not operate even if the

room temperature is within range of

compressor-ON.

The compressor does not operate while compressor

restart delay timer (3-minutes timer) operates.

The same phenomenon is found after power source has

been turned on because 3-minutes timer operates.

In Dry and ECO mode, FAN (air flow)

display does not change even though FAN

(air flow select) button is operated.

The air flow indication is fixed to [AUTO].

Increasing of compressor motor speed

stops approx. 30 seconds after operation

For smooth operation of the compressor, the compres-

sor motor speed is restricted to Max. 41 rps for 2 min-

started, and then compressor motor speed utes, and Max.91 rps for 2 minutes to 3 minutes, respec-

increases again approx. 30 seconds after.

tively after the operation has started.

In AUTO mode, the operation mode is

changed.

After selecting Cool or Heat mode, select an operation

mode again if the compressor keeps stop status for 15

minutes.

In HEAT mode, the compressor motor

speed does not increase up to the maxi-

mum speed or decreases before the

The compressor motor speed may decrease by high-

temp. release control (Release protective operation by

temp.-up of the indoor heat exchanger) or current

temperature arrives at the set temperature. release control.

– 62 –

11-2. Primary Judgment

To diagnose the troubles, use the following methods.

1) Judgment by flashing LED of indoor unit

2) Self-diagnosis by service check remote controller

3) Judgment of trouble by every symptom

Firstly use the method 1) for diagnosis.Then, use the method 2) or 3) to diagnose the details of troubles.

11-3. Judgment by Flashing LED of Indoor Unit

While the indoor unit monitors the operation status of the air conditioner, if the protective circuit operates, the

contents of self-diagnosis are displayed with block on the indoor unit indication section.

Table 11-3-1

Check

code

Item

Block display

Description for self-diagnosis

OPERATION (Green)

Flashing display (1 Hz)

Power failure (when power is ON)

Indoor indication

lamp flashes.

OPERATION (Green)

Flashing display (5 Hz)

Protective circuit operation for indoor P.C. board

Which lamp

does flash?

OPERATION (Green)

TIMER (Yellow)

Flashing display (5 Hz)

Protective circuit operation for connecting cable

and serial signal system

OPERATION (Green)

FILTER (Orange)

Flashing display (5 Hz)

Protective circuit operation for outdoor P.C. board

OPERATION (Green)

TIMER (Yellow)

FILTER (Orange)

Protective circuit operation for others

(including compressor)

Flashing display (5 Hz)

NOTES :

1. The contents of items B and C and a part of item E are displayed when air conditioner operates.

2. When item B and C, and item B and a part of item E occur concurrently, priority is given to the block of item B.

3. The check codes can be confirmed on the remote controller for servicing.

– 63 –

11-4. Self-Diagnosis by Remote Controller (Check Code)

1. If the lamps are indicated as shown B to E in Table 11-3-1, execute the self-diagnosis by the remote controller.

2. When the remote controller is set to the service mode, the indoor controller diagnoses the operation condi-

tion and indicates the information of the self-diagnosis on the display of the remote controller with the check

codes. If a fault is detected, all lamps on the indoor unit will flash at 5Hz and it will beep for 10 seconds

(Beep, Beep, Beep ... ). The timer lamp usually flashes (5Hz) during self-diagnosis.

11-4-1. How to Use Remote Controller in Service Mode

Press [CHECK] button with a tip of pencil to set the

remote controller to the service mode.

• “

” is indicated on the display of the remote

controller.

Press [ON ] or [OFF ] button

If there is no fault with a code, the indoor unit will beep

once (Beep) and the display of the remote controller will

change as follows :

• • •

AUTO

PURE

TEMP

• The TIMER indicator of the indoor unit flashes continuously.

(5 times per 1 sec.)

MODE

PRESET

• Check the unit with all 52 check codes (

)

as shown in Table-11-4-1.

HiPOWER

ECO

MEMO

1 3 5 9H

• Press [ON ] or [OFF ] button to change the check

code backward.

SWING

CLR

FIX

FAN

SLEEP

SET

OFF

CLOCK

RESET

CHECK

If there is a fault, the indoor unit will beep for 10

seconds (Beep, Beep, Beep...).

Note the check code on the display of the remote

controller.

• 2-digits alphanumeric will be indicated on the display.

Alphanumeric characters are

used for the check codes.

• All indicators on the indoor unit will flash.

(5 times per 1 sec.)

is 5.

is A.

is C.

is 6.

is B.

is D.

Press [START/STOP] button to release the service mode.

• The display of the remote controller returns to as it

was before service mode was engaged.

Time shortening method.

1. Press SET button while pushing CHECK button.

2. Press [START/STOP] button.

Fig. 11-4-1

– 64 –

11-4-2. Caution at Servicing

1. After servicing, press the START/STOP button to return to the normal mode.

2. After servicing by the check code, turn off breaker of the power supply, and turn on breaker of the power

supply again so that memory in the microcomputer returns the initial status.

However, the check codes are not deleted even if the power supply is turned off because they are stored in

the fixed memory.

3. After servicing, press [CLR] button under check mode status and then send the check code “7F” to the

indoor unit. The error code stored in memory is cleared.

Table 11-4-1

Block distinction

Operation of diagnosis function

Air

Judgment and action

Check

code

Check

code

Block

Cause of operation

conditioner

status

Remarks

Indoor P.C.

board etc.

Short-circuit or discon-

nection of the room

temperature sensor

(TA sensor).

Operation Displayed when

continues. error is detected.

1. Check the room temp. sensor.

2. When the room temp. sensor is

normal, check P.C. board.

Being out of place,

disconnection, short-

circuit, or migration of

heat exchanger sensor

(TC sensor)

Operation Displayed when

continues. error is detected.

1. Check heat exchanger sensor.

2. When heat exchanger sensor is

normal, check P.C. board.

Lock of indoor fan or

trouble on the indoor fan

circuit

All off

Displayed when

error is detected.

1. Check the motor.

2. When the motor is normal,

check P.C. board.

Not

displayed

Trouble on other indoor

P.C. boards

Operation Displayed when

continues. error is detected.

Replace P.C. board.

Connecting

cable and

serial signal

Return serial signal is not Operation Flashes when

1. When the outdoor unit never

operate:

sent to indoor side from

operation started.

continues. trouble is detected

on Return serial

1) Check connecting cable, and

correct if defective wiring.

signal, and normal

status when signal

is reset.

1) Defective wiring of

connecting cable

2) Check 25A fuse of inverter

P.C. board.

2) Operation of compres-

sor thermo Gas

3) Check 3.15A of inverter P.C.

board.

shortage Gas leak

2. To display [Other] block during

operation, check compressor

thermo. operation and supply

gas (check gas leak also).

3. Unit operates normally during

check.

If return serial signal does not

stop between indoor terminal

board 2 and 3, replace inverter

P.C. board.

If signal stops between indoor

terminal board 2 and 3, replace

indoor P.C. board.

– 65 –

Block distinction

Operation of diagnosis function

Air

Judgment and action

Check

Block

code

Check

code

Cause of operation

conditioner

status

Remarks

Outdoor P.C.

board

Inverter over-current

protective circuit

operates. (Short time)

All off

Displayed when

error is detected. operations stop immediately. :

Replace P.C. board.

Even if trying operation again, all

Position-detect circuit

error or short-circuit

between windings of

compressor

Displayed when

error is detected.

1. Even if connecting lead wire of

compressor is removed,

position-detect circuit error

occurred. : Replace P.C. board.

2. Measure resistance between

wires of compressor, and

perform short-circuit. : Replace

compressor.

Current-detect circuit

error

All off

Displayed when

error is detected. operations stop immediately. :

Replace P.C. board.

Even if trying operation again, all

Being out of place,

disconnection or short-

circuit of the outdoor

heat exchanger sensor

(TE) or suction temp.

sensor (Ts)

Displayed when

error is detected.

1. Check sensors (TE, TS).

2. Check P.C. board.

Disconnection or short- All off

circuit of discharge

Displayed when

error is detected.

1. Check discharge temp. sensor

(TD).

temp. sensor

2. Check P.C. board

Outdoor fan drive

system error

All off

Displayed when

error is detected. protective operation of outdoor fan

drive system, fan lock, etc. :

Position-detect error, over-current

Replace P.C. board or fan motor.

Not

displayed

Outdoor heat exchanger Operation

temp. sensor error continues

1. Check outdoor temp. sensor

(TO).

——

2. Check P.C. board.

Outdoor P.C.

board

Compressor drive output All off

error, Compressor error

(lock, missing, etc.),

Break down

Displayed when

When 20 seconds passed after

error is detected. start-up, position-detect circuit error

occurred. : Replace compressor.

Trouble on P.M.V.

Others

(including

compressor)

Return serial signal has Operation Flashes when

1. Repeat Start and Stop with

interval of approx. 10 to 40

minutes. (Code is not displayed

during operation.)

Supply gas.

(Check also gas leak).

been sent when

operation started, but it

is not sent from halfway.

continues trouble is detected

on return serial

signal, and normal

status when signal

is reset.

1) Compressor thermo.

operation

Gas shortage

Gas leak

2. Unit operates normally during

check.

If return serial signal does not

stop between indoor terminal

block 2 and 3, replace inverter

P.C. board.

2) Instantaneous power

failure

If signal stops between indoor

terminal block 2 and 3, replace

indoor P.C. board.

Compressor does not

rotate.

(Current protective

circuit does not operate

when a specified time

passed after compressor

had been activated.)

All off

Displayed when

error is detected.

1. Trouble on compressor

2. Trouble on wiring of compressor

(Missed phase)

Discharge temp.

exceeded 117°C

All off

Displayed when

error is detected.

1. Check dischage temp. sensor

(TD).

2. Gas leakage

3. Trouble on P.M.V.

Break down of

compressor

Displayed when

error is detected.

1. Check power voltage.

(220–230–240 V +10%)

2. Overload operation of refrigera-

tion cycle

Check installation condition

(Short-circuit of outdoor diffuser).

4-way valve inverse error Operation

1. Check 4-way valve operation.

(TC sensor value

lowered during heating

operation.)

continues

——

– 66 –

11-5. Judgment ofTrouble by Every Symptom

11-5-1. Indoor Unit (Including Remote Controller)

(1) Power is not turned on (Does not operate entirely)

1. Is the supply voltage normal?

2. Is the normal voltage provided to the outdoor unit?

3. Is the crossover cable connected properly?

4. Is the fuse (F01) blown?

Operation

Check Item

Considerable principle cause

Turn off power supply once, and

5 second later, turn it on again.

Measures

Item by symptoms

Is OPERATION indicator flashing?

YES

Is it possible to turn on

power supply by pushing

[START/STOP] button

on remote controller?

Does transmission mark

on remote controller flash

normally,and is its signal

transmitted properly?

Remote controller is defective.

YES

Refer to (5) “Troubleshooting

for remote controller”.

Unit operates normally.

Does fan

YES

Is fuse (F01)

of indoor control

board blown?

Parts (R04, R05, DB01, C01,

C03, IC01 and T01) are defective.

motor connector

between CN10 1 –

3 short-circuit?

Is voltage

(DC12V or 5V)

indicated on rear of

indoor control

YES

Microcomputer

is defective.

Replace main

P.C. board

board normal?

Is DC310–340V

supplied between

CN10 1 – 3 ?

Parts of a power supply circuit

defective.

YES

Replace fan

motor.

• Be sure to disconnect the motor connector CN10 after shut off the power supply, or it will be a cause of

damage of the motor.

(2) Power is not turned on though Indoor P.C. board is replaced

Turn on power supply.

Is wired correctly to white and

Does OPERATION indicator flash?

YES

Correct wiring.

black lead wires of terminal block?

YES

To item of

“Power supply is not turned on”.

– 67 –

(3) Only the indoor motor fan does not operate

1. Is it possible to detect the power supply voltage (AC220–240V) between

and

on the terminal block?

‚

2. Does the indoor fan motor operate in cooling operation?

(In heating operation, the indoor fan motor does not operate for approximately 10 minutes after it is turned

on, to prevent a cold air from blowing in.)

Turn off power

supply once, and

turn it on again.

Is it possible to detect

YES

DC 1V or more between

Does fan motor

and

– of

continue to operate?

Peplace indoor

fan motor.

motor connector (CN10).

YES

Start to operate

indoor unit in cooling

operation at airflow

level “LOW”.

Is it possible to detect

DC 310–340V between

Does indoor

fan operate?

and

–

of motor

connector (CN10).

YES

Turn off indoor unit and remove

(Motor connection condition)

Is it possible to detect DC 15V

NO connector from motor.

Then push START/STOP button

on remote controller to stop

flashing lamp on indoor unit.

between

and

– of

motor connector (CN10).

YES

Is it possible to detect

DC 15V between

Peplace main

P.C. board.

Change airflow level

to “HIGH”.

and

– of motor

connector (CN10).

YES

Start to operate the

indoor unit in except

Turn off indoor unit and

heating operation.

remove connector from motor.

Then start to operate indoor

unit with remote controller.

At this time, is it possible to

detect DC 1V or more between

and

– of motor

connector (CN10)?

YES

Start to operate the

indoor unit in except

heating operation.

At this time, is it possible

to detect DC 1V or more

Is it possible to

change airflow level

to “HIGH”?

between

and

–

of motor connector (CN10)?

(Check this condition

within 15 seconds after

starting unit.)

YES

Is it possible to

Peplace

bearing.

rotate cross-flow fan by

hand properly?

YES

Turn off indoor unit

and rotate cross-flow

fan by hand when the

unit is on standby.

At this time, is it possible to

detect DC 1V or more

between

and

–

of motor connector

(CN10).

Fan motor

operates normally.

YES

– 68 –

(4) Indoor fan motor automatically starts to rotate by turning on power supply

<Cause>

The IC is built in the indoor fan motor. Therefore the P.C. board is also mounted to inside of the motor.

If the P.C. board is soldered imperfectly or the IC is defective, the fan motor may automatically rotate by turning

on power supply.

1. Remove the front panel. (Remove 2 screws.)

2. Remove the cover of the fan motor lead wires.

3. Check DC voltage with CN10 connector while the fan motor is rotating.

NOTE :

• Do not disconnect the connector while the fan motor is rotating.

• Use a thin test rod.

Indoor fan starts rotating when power supply is turned on.

P.C. board

CN10

(Check output DC voltage of fan motor on P.C. board.)

6 (Blue)

5 (Yellow)

4 (White)

3 (Black)

Yellow

Black

Measure voltage between 3 (GND : BLACK)

and 5 (V line : YELLOW) of motor connector (CN10)

while indoor fan motor is rotating.

–

1 (Red)

DC 1.0V or more

P.C. board is defective.

Replace P.C. board.

Under DC 1.0V

Motor is defective.

Replace motor.

– 69 –

(5) Troubleshooting for remote controller

Check that A or B selected on the main unit is matched with A or B selected on the remote controller.

The unit does not beep at all.

Push the START/STOP button. Operation lamp on indoor

unit is not indicated.

Is transmission

mark indicated?

YES

Is receiver

on indoor unit

exposed to

Push RESET button

on remote controller

with tip of pencil.

direct sunlight?

YES

Does indoor unit

operate when moving

remote controller

near receiver or

indoor unit?

Is there any

thyristor

fluorescent light

nearby?

YES

Batteries are

exhausted.

Push the START/

STOP button

Does indoor unit

start to operate by

automatic restart

function?

Is transmission

mark indicated?

YES

Does indoor unit

beep and operate?

YES

Does radio sound

is affected by remote

controller when a signal is

transmitted at distance of

5 cm from radio?

YES

Remote controller

is defective.

P.C. board

is defective.

Keep indoor unit

away from thyristor

fluorescent light.

Avoid direct

sunlight.

Replace

P.C. board.

Replace

batteries.

Replace

remote controller.

Normal

operation

NOTE : After replacing batteries,

push the RESET button

with a tip of a pencil.

– 70 –

11-5-2. Wiring Failure (Interconnecting and Serial Signal Wire)

(1) Outdoor unit does not operate

1) Is the voltage between

and

of the indoor terminal block varied?

‚

Confirm that transmission from indoor unit to outdoor unit is correctly performed based upon the follow-

ing diagram.

NOTE:

• Measurement should be performed 2 minutes and 30 seconds after starting of the operation.

• Be sure to prepare a diode for judgment.

Terminal block at indoor side

Red

S5277G or equivalent (G or J type)

(Diode with rated voltage of 400V

or more is acceptable.)

S5277G

White

Tester

Terminal block

Normal time

:Voltage swings between DC15 and 60V. ...................Inverter Assembly check (11-8-1.)

Abnormal time :Voltage does not vary.

(2) Outdoor unit stops in a little while after operation started

<Check procedure> Select phenomena described below.

1) The outdoor unit stops 10 to 20 minutes after operation started, and 10 minutes or more are required to

restart the unit.

Gas circulation amount is down.

Measure gas pressure.

Gas shortage

Gas leak

Pipe clogging

Thermo. operation of compressor

2) If the unit stops once, it does not operate until the power will be turned on again.

To item of Outdoor unit does not operate.

3) The outdoor unit stops 10 minutes to 1 hour after operation started, and an alarm is displayed.

(Discharge temp. error check code 03, 1E Sensor temp. error check code 02, 1C)

Gas leak

P.M.V. is defective.

Refer to the chart in 11-6.

Miswiring of connecting wires of indoor/outdoor units

Clogging of pipe and coming-off of TC sensor

– 71 –

11-6. Check Code 1C (Miswiring in indoor/outdoor units) and 1E

Gas leakage,

Discharge temp. error,

gas leakage

(Check code 03, 1E)

disconnection of TS/TC

sensors (Check code 02, 1C)

Valve drive check

Is coil of the pulse motor valve

(P.M.V.) correctly set?

Set it correctly.

YES

Is connecter of coil connected to inverter?

YES

Is positioning sound of valve (sound hitting to stopper) heard

from valve when the air conditioner starts the operation after turning off power

of the air conditioner once?

Replace coil valve.

YES

Are temp. sensors of indoor/outdoor units correctly set to the holder?

NOTE :

The temperature sensors which are used to control pulse motor valve

include indoor heat exchanger sensor (TC), outdoor heat exchanger temp.

sensor (TE), outdoor suction temp. sensor (TS) and outdoor sensor (TO).

Set it correctly.

YES

Gas amount check and valve clogging check

Remove TC sensor connector from the P.C. board in indoor unit.

(Remove connector from the P.C. board.)

Operate the air conditioner in COOL mode by TEMP button

(“Beep” sound is heard if keeping pushed for 10 seconds.).

The operation enters temporary operation mode which fixes opening degree of compressor speed.

Check condensation at outlet of PMV, and then check operating pressure from the service port.

Existence of condensation at outlet of P.M.V.

YES

Replace valve.

Add gas.

If there is condensation at outlet (1/4 inch=Ø6.35mm valve side),

the valve is clogged.

Check the operating pressure from service port, and add gas if pressure is low.

– 72 –

11-7. Troubleshooting

11-7-1. How to Check Whether the Air Purifier is Good or Not

Turn off the power breaker once,

and turn on again after 10 seconds.

Does the OPERATION indicator flash?

To item “Power supply is not turned on”

YES

Turn off the power breaker and remove

CN34 (Micro switch connector).

Short-circuit between

and

of CN34 at PC side, and turn on the

power breaker after 10 seconds.

Is DC12V applied

between

(Red/DC12V) and

between

(+) and

(–)

(Brown/GND) of CN1 of the

high-voltage generator?

of CN33 of the main

P.C. board (MCC5020)?

YES

Replace the main P.C. board (MCC5020)

Is there conduction of

micro-switch connector under

OFF status of the micro-switch

(Front panel opened)?

YES

Micro-switch is stuck

Replace micro-switch.

• Conduction check of micro-switch

Push the switch

Is there conduction of

micro-switch connector under

ON status of the micro-switch

(Front panel closed)?

Micro-switch malfunction

YES

→ ON

1) Check operation while short-circuiting CN34 of the main P.C. board.

2) Perform air purifying operation by the remote controller.

• In this time, check that the remote controller is in status which is shortened by time on

the reactivation preventive timer and all display indicators go on for approx. 3 seconds

when a signal is received.

Release the switch

→ OFF

If time on the reactivation preventive timer is not shortened,

(

)

the high-voltage is not applied to electrode of the air purifier for approx. 1 hour.

• While the air purifier operates, check that the fan speed [AUTO] is not displayed.

(Because the power ON/OFF is controlled on the program)

Tester

3) Be sure not to touch the electric dust collector, ionizer, or ionized wire unit with the human body.

To item “Only indoor fan does not operate”

Does the indoor fan rotate?

YES

Does the PURE indicator (Blue) or

the FILTER indicator (Orange) go on?

Replace the main P.C. board (MCC5020).

YES

Is DC-5V to DC-10V

applied between

• How to check output of the air purifier

Does the PURE indicator

go off within 2 seconds after

it was ON, and does the FILTER

indicator (Orange) go on?

(Brown/Negative voltage)

and

(Brown/GND)

of CN33 of the main

P.C. board?

Collector

output

YES

Dry the electric

dust collector

and ionizer.

Are the electric dust

collector and ionizer dried?

(Electrode check)

YES

GND

Referring to the right figure, check the

Be sure not to come

Ionizer

output

high-output voltage of the air filter unit.

(NOTE)

to contact to the gray

part or not to touch

the ionized cables.

Use an exclusive high voltage tester;

otherwise the tester may be broken.

High-voltage tester

YES

Is output of the ionizer

approx. 4.0 kV to 4.8 kV?

Is output of the collector

approx. 3.0 kV to 3.8 kV?

Refer to items, cleaning and check

for the electric dust collector/ionizer/

ionized wire units.

Replace the high-voltage generator.

When the ionized wire is

disconnected or when dirt is

YES

(

)

not cleaned even cleaned,

replace each unit.

Are the electric dust

collector/ionizer/ionized

wire units dirty?

Is an abnormal sound

(cracking noise) heard

from the electrode?

YES

No trouble

– 73 –

11-7-2. How to Check Whether the Minus Ion Generator is Good or Not

Turn off the power breaker once,

and turn on again after 10 seconds.

Does the OPERATION indicator flash?

YES

To item “Power supply is not turned on”

Turn off the power breaker and remove

CN34 (Micro switch connector).

Short-circuit between

and

of CN34 at PC side, and turn on the

power breaker after 10 seconds.

Is DC12V applied

between

(Red/DC12V) and

Replace the power P.C. board

(MCC5020) or the housing assembly.

(Brown/GND) of CN1 of the

high-voltage generator

in the air purifier?

YES

Is there conduction of

YES

micro-switch connector under

OFF status of the micro-switch

(Front panel opened)?

Micro-switch is stuck

Replace micro-switch.

Is there conduction of

micro-switch connector under

ON status of the micro-switch

(Front panel closed)?

Micro-switch malfunction

• Conduction check of micro-switch

YES

Push the switch

→ ON

Release the switch

→ OFF

1) Check operation while short-circuiting CN34 of the main P.C. board.

2) Perform air purifying operation by the remote controller.

• In this time, check that the remote controller is in status which is shortened by time on

the reactivation preventive timer and all display indicators go on for approx. 3 seconds

when a signal is received.

If time on the reactivation preventive timer is not shortened,

(

)

the high-voltage is not applied to electrode of the air purifier for approx. 1 hour.

• While the air purifier operates, check that the fan speed [AUTO] is not displayed.

Tester

(Because the power ON/OFF is controlled on the program)

3) Be sure not to touch the electrode with the human body.

To item “Only indoor fan does not operate”

Does the indoor fan rotate?

YES

Does the PURE indicator (Blue) or

the FILTER indicator (Orange) go on?

Replace the main P.C. board (MCC5020).

YES

Does the PURE indicator

go off within 2 seconds after

it was ON, and does the FILTER

indicator (Orange) go on?

YES

To item “How to check whether

the air purifier is good or not”

• How to check output of minus ion

Referring to the right figure, check the

high-voltage output of the air ionizer.

In this time, peel the thermal insulator, and attach

it to the original position after check operation.

high-voltage

unit

NOTE :

Use an exclusive high voltage tester; otherwise

the tester may be broken.

YES

Does the electrode

output approx. –6kV?

No trouble

Electrode

Replace the

high-voltage generator

GND

High-voltage tester

– 74 –

11-8. How to DiagnoseTrouble in Outdoor Unit

11-8-1. Summarized Inner Diagnosis of Inverter Assembly

Table 11-8-1

Diagnosis/Process flowchart

Item

Contents

Summary

Preparation Turn “OFF” the power supply

breaker, and remove 3P

Remove connector

of compressor.

connector which connects

inverter and compressor.

If fuse was blown, be sure to

check the electrolytic

capacitor and diode block.

(DB01)

Check

• Check whether 25A fuse

on the control board

assembly is blown or not.

(F01)

Check 25A fuse

(Part No.F01).

Replace fuse.

• Connect discharge

resistance (approx. 100Ω,

40W) or soldering iron

(plug) between +, –

terminals of the electro-

lytic capacitor (760µF) of

C14 (with printed CAU-

TION HIGH VOLTAGE) on

P.C. board.

Check

electrolytic

capacitor, diode

block (DB01),

etc.

Discharging position

(Discharging period

10 seconds or more)

Check

terminal voltage

of electrolytic

capacitor.

Plug of

soldering

iron

Check

electrolytic

capacitor, diode

(DB01),

etc.

Does outdoor

fan rotate?

Operation

Turn on the power breaker,

and operate the air condi-

tioner in COOL mode by time

shortening.

YES

OK if 760µF →

DC280 to 380V

Measure-

ment

Measure terminal voltage of

the electrolytic capacity.

Remove CN300 while

pushing the part indicated

by an arrow because CN300

is a connector with lock.

760µF:400WV × 3

After operation, turn off the

power breaker after 2

minutes 20 seconds passed,

and discharge the electro-

lytic capacitor by soldering

iron.

Remove connector

Check

Stop

CN300 of outdoor fan

motor, and using a

tester, check resistance

value between every

phases at motor side.

Check voltage between

motor phases.

Check

Measure-

ment

Replace

outdoor

fan motor.

• Is not winding between

‚

, or

opened

→ Resistance between

phases should be

‚ ‚ ƒ ƒ

or short-circuited?

approx. 55 to 77Ω

• Is not frame grounded with

, or

‚

→ Should be 10MΩ or

more.

– 75 –

Diagnosis/Process flowchart

Item

Contents

Summary

Check

Check winding resistance

between phases of compres-

sor, and resistance between

outdoor frames by using a

tester.

• Is not grounded.

→ OK if 10MΩ or more

Replace control

board assembly.

• Is not short-circuited

between windings.

→ OK if 0.51Ω → 0.57Ω

(Check by a digital tester.)

Check

compressor

winding

• Winding is not opened.

resistance.

Operation

Remove connector CN300 of

the outdoor fan motor, turn

on the power supply breaker,

and perform the operation.

(Stops though activation is

prompted.)

Replace

control board.

Replace

compressor.

Check operation within 2

minutes 20 seconds after

activation stopped.

11-9. How to Check Simply the Main Parts

11-9-1. How to Check the P.C. Board (Indoor Unit)

(1) Operating precautions

1) When removing the front panel or the P.C. board, be sure to shut off the power supply breaker.

2) When removing the P.C. board, hold the edge of the P.C. board and do not apply force to the parts.

3) When connecting or disconnecting the connectors on the P.C. board, hold the whole housing. Do not pull

at the lead wire.

(2) Inspection procedures

1) When a P.C. board is judged to be defective, check for disconnection, burning, or discoloration of the

copper foil pattern or this P.C. board.

2) The P.C. board consists of the following 2 parts

a. Main P.C. board part :

DC power supply circuit (5V, 12V, 15V), Indoor fan motor control circuit, CPU and peripheral circuits,

buzzer, and Driving circuit of louver.

b. Indication unit of infrared ray receiving infrared ray receiving circuit, LED :

To check defect of the P.C. board, follow the procedure described below.

– 76 –

(3) Check procedures

Table 11-9-1

Check points

No.

Procedure

Causes

Turn off the power supply breaker Check whether or not the fuse (F01) Impulse voltage was applied or the

and remove the P.C. board

is blown.

indoor fan motor short-circuited.

assembly from electronic parts

base. Remove the connecting

cables from the terminal block.

Remove the connector of the

motor and turn on the power

supply breaker. If OPERATION

indicator flashes (once per

second), it is not necessary to

check steps (1 to 3) in the right

next column.

Check power supply voltage :

1. The terminal block or the crossover

cable is connected wrongly.

1. Between No. 1 and No. 3 of CN23

(AC 220–240V)

2. The capacitor (C01), line filter

(L01), resistor (R05), or the diode

(DB01) is defective.

2. Between

(DC 310–340V)

3. Between of C10 and output

and

of C03

3. IC01, IC08 and T01 are defective.

4. IC01, IC08 and T01 are defective.

side of IC08 (DC 15V)

4. Between 12V and GND

5. Between 5V and GND

5. IC01, IC08, IC07 and T01 are

defective.

Push [START/STOP] button once Check power supply voltage :

IC03 and IC04 are defective.

to start the unit. (Do not set the

mode to On-Timer operation.)

1. Between CN21 and

No. 1 of CN23 (DC 15–60V)

Shorten the restart delay timer

and start unit.

Check whether or not all indicators

(OPERATION, TIMER, FILTER,

PURE) are lit for 3 seconds and they

return to normal 3 seconds later.

The indicators are defective or the

housing assembly (CN13) is defective.

Push [START/STOP] button once 1. Check whether or not the com-

1. The temperature of the indoor heat

exchanger is extremely low.

to start the unit,

pressor operates.

• Shorten the restart delay timer.

2. Check whether or not the OP-

ERATION indicator flashes.

2. The connection of the heat ex-

changer sensor is loose.

(The connector is disconnected.)

(CN01)

• Set the operation mode to

COOL.

• Set the fan speed level to

AUTO.

3. The heat exchanger sensor and the

P.C. board are defective.

• Set the preset temperature

much lower than the room

temperature. (The unit (com-

pressor) operates continuously

in the above condition.)

(Refer to Table 11-4-1.)

4. The main P.C. board is defective.

If the above condition (No. 5) still

continues, start the unit in the

following condition.

1. Check whether or not the com-

pressor operates.

1. The temperature of the indoor heat

exchanger is extremely high.

2. Check whether or not the OP-

ERATION indicator flashes.

2. The connection of the heat ex-

changer sensor short-circuited.

(CN01)

• Set the operation mode to

HEAT.

• Set the preset temperature

much higher than room tem-

perature.

3. The heat exchanger sensor and the

P.C. board are defective.

(Refer to Table 11-4-1.)

4. The main P.C. board is defective

Connect the motor connector to

the motor and turn on the power

supply.

Start the unit the following

condition.

1. Check it is impossible to detect

the voltage (DC 15V) between 3

and 4 of the motor terminals.

1. The indoor fan motor is defective.

(Protected operation of P.C. board.)

2. The P.C. board is defective.

2. The motor does not operate or

the fan motor does not rotate with

high speed.

3. The connection of the motor

connector is loose.

• Set the fan speed level to HIGH.

(The unit (compressor) operates

continuously in the above

condition in No. 5.)

(But it is possible to receive the

signal from the remote controller.)

3. The motor rotates but vibrates

strongly.

– 77 –

11-9-2. P.C.BoardLayout

GND

+12V

+5V

[1] Sensor characteristic table

100

TD : Discharge temp. sensor

TA : Room temp. sensor

TC : Heat exchanger temp. sensor

TO : Outdoor temp. sensor

TE : Outdoor heat exchanger temp. sensor

TS : Suction temp. sensor

TA, TC, TO, TE, TS

40 50

Temperature (˚C)

– 78 –

11-9-3. Indoor Unit (Other Parts)

No.

Part name

Checking procedure

Room temp. (TA) sensor

Heat exchanger (TC) sensor (Normal temp.)

Disconnect the connector and measure the resistance value with tester.

Temperature

TA, TC (kΩ)

Refer to 11-5-1. (5).

10°C

20°C

25°C

30°C

40°C

Sensor

20.7

12.6

10.0

7.9

4.5

Remote controller

Louver motor

MP24Z

Measure the resistance value of each winding coil by using the tester.

(Under normal temp. 25°C)

Position

Resistance value

White

Yellow

1 to 2

1 to 3

1 to 4

1 to 5

380 ± 40Ω

Indoor fan motor

Refer to 11-5-1. (3) and (4).

11-9-4. OutdoorUnit

No.

Part name

Checking procedure

Compressor

(Model : DA111A1F-20F1)

Measure the resistance value of each winding by using the tester.

Red

Position

Red - White

White - Black

Black - Red

Resistance value

0.88 to 0.98Ω

Under 20°C

White

Black

Outdoor fan motor

(Model : ICF-140-43-4R)

Measure the resistance value of winding by using the tester.

Red

Position

Red - White

White - Black

Black- Red

Resistance value

17 to 25kΩ

White

Black

4-way valve coil

(Model : VHV)

Measure the resistance value of winding by using the tester.

Resistance value

1435 ± 144Ω

Under 20°C

Pulse motor valve coil

(Model : CAM-MD12TF-6)

Measure the resistance value of winding by using the tester.

Position

Red - White

Resistance value

COM

42 to 50kΩ

White - Orange

Brown- Yellow

Brown- Blue

Y BR BL

COM

Under 20°C

Outdoor temperature sensor Disconnect the connector, and measure resistance value with the tester.

(TO), discharge temperature (Normal temperature)

sensor (TD), suction

Temperature

10°C 20°C 25°C 30°C 40°C 50°C

temperature sensor (TS),

outdoor heat exchanger

temperature sensor (TE)

Sensor

TD (kW)

100

TO,TS,TE (kW)

20.7 12.6 10.0

7.9

4.5

—

– 79 –

11-9-5. Checking Method for Each Part

No.

Part name

Checking procedure

1. Turn OFF the power supply breaker.

Electrolytic capacitor

(For boost, smoothing)

2. Discharge all three capacitors completely.

3. Check that safety valve at the bottom of capacitor is not broken.

4. Check that vessel is not swollen or exploded.

5. Check that electrolytic liquid does not blow off.

6. Check that the normal charging characteristics are shown in continuity test by

the tester.

C12 C13 C14

Case that product is good

Pointer swings once, and returns

slowly. When performing test

once again under another

MCC-5009

Soldered

surface

polarity, the pointer should return.

C12, C13, C14 → 760µF/400V

Diode block

1. Turn OFF the power supply breaker.

2. Completely discharge the four electrolytic capacitors.

3. Remove the diode block from the PCB (which is soldered in place).

4. Use a multimeter with a pointer to test the continuity, and check that the

diode block has the proper rectification characteristics.

Tester rod

Resistance value

in good product

–

+ ~ ~ –

∞

1 2 3 4

(DBO1)

–

10 to 20 Ω when the multimeter probe

is reversed

– 80 –

11-10. How to Simply Judge Whether Outdoor Fan Motor is Good or Bad

1. Symptom

• Outdoor fan motor does not rotate.

• Outdoor fan motor stops within several tens seconds though it started rotating.

• Outdoor fan motor rotates or does not rotate according to the position where the fan stopped, etc.

Remote controller check code “02 : Outdoor block, 1A : Outdoor fan drive system error”

2. Cause

The following causes are considered when the outdoor fan motor does not normally rotate.

1) Mechanical lock of the outdoor fan motor

2) Winding failure of the outdoor fan motor

3) Position-detect circuit failure inside of the outdoor fan motor

4) Motor drive circuit failure of the outdoor P.C. board

3. How to simply judge whether outdoor fan motor is good or bad

Turn OFF the breaker.

Disconnect two connectors (CN300) of the

outdoor fan motor from the outdoor P.C. board.

Does the fan rotate without trouble

CN300

when rotating it with hands?

YES

If the resistance value between

1 (Red lead)

2 (White lead)

3 (Black lead)

– 2 (White lead)

– 3 (Black lead)

– 1 (Red lead)

of the connector

(CN300 : Motor winding)

is 17 to 25Ω, it is normal.

YES

Fan motor is normal.

Fan motor error

(Outdoor P.C. board error)

NOTE :

However, GND circuit error inside of the motor may be accepted in some cases when the above check is

performed.

When the fan motor does not become normal even if P.C. board is replaced, replace the outdoor fan motor.

– 81 –

12. HOWTO REPLACE THE MAIN PARTS

WARNING

• Since high voltages pass through the electrical parts, turn off the power without fail before proceeding with

the repairs.

Electric shocks may occur if the power plug is not disconnected.

• After the repairs have been completed (after the front panel and cabinet have been installed), perform a

test run, and check for smoking, unusual sounds and other abnormalities.

If this check is omitted, a fire and/or electric shocks may occur.

Before proceeding with the test run, install the front panel and cabinet.

• Ensure that the following steps are taken when doing repairs on the refrigerating cycle.

1. Do not allow any naked flames in the surrounding area.

If a gas stove or other appliance is being used, extinguish the flames before proceeding.

If the flames are not extinguished, they may ignite any oil mixed with the refrigerant gas.

2. Do not use welding equipment in an airtight room.

Carbon monoxide poisoning may result if the room is not properly ventilated.

3. Do not bring welding equipment near flammable objects.

Flames from the equipment may cause the flammable objects to catch fire.

• If keeping the power on is absolutely unavoidable while doing a job such as inspecting the cir-

cuitry, wear rubber gloves to avoid contact with the live parts.

Electric shocks may be received if the live parts are touched.

High-voltage circuits are contained inside this unit.

Proceed very carefully when conducting checks since directly touching the parts on the control circuit

board may result in electric shocks.

12-1. Indoor Unit

No.

Part name

Procedures

Remarks

Front panel

1) Stop operation of the air conditioner and

turn off its main power supply.

2) Open the air inlet grille, push the arm

toward the outside, and remove the grille.

3) Remove the left and right air filters, and

remove the electric dust collector.

– 82 –

No.

Part name

Procedures

Remarks

Front panel

4) Press “

” part under the front panel

and remove hooks of the front panel from

the installation plate.

Pull here

Installation plate

Front panel

Press here

Press

5) Remove the front panel fixing screws.

(2 pcs.)

6) Press the electric parts box with the right

thumb while pulling the both sides of the

front panel toward you.

Electric dust

collector

Electric dust

collector

Holder

Protrusion

1) Press three center positions and two lower center positions of the air outlet, and

then hang the hanging hooks (4 pcs.) at the top side of the front panel to the rear

plate.

2) Insert the electric dust collector and left and right air filters.

Press in the electric dust collector until the protrusions on both sides are completely

inserted into the holders.

If installation is incomplete, the FILTER indicator (orange) may light.

3) Tighten two screws.

• Incomplete hanging or incomplete pressing may cause a dewdrops or generation

of a fluttering sound.

– 83 –

No.

Part name

Procedures

Remarks

High voltage 1) Follow to the procedure in the item

‚

generator

2) Remove the drain guide.

3) To remove the air ionizer from the back body,

pull it toward you while pressing down on its left

and right claws.

Connector

Disconnect the two leads (black) connected to

the air ionizer from where they are fitted into

the other components.

Drain guide

(Caution: do not remove the Faston.)

4) Disconnect the connectors of the high-voltage

generator, and disconnect the four leads from

where they are fitted into the other compo-

nents.

Air ionizer

5) Remove the fixing screw which secures the

high voltage generator, and remove the high

voltage generator from the evaporator.

Press the

claw here

Screw

Press the

claw here

Pull here

1) Insert the high voltage generator straight into

the evaporator, and secure it using the fixing

screw.

Check whether the

completely inserted.

2) Pass the leads of the high voltage generator

through the area designated and insert them

into its connectors.

Claw

3) Attach the air ionizer to the back body, and

pass the two leads (black) through the area

designated on the electric parts box assembly.

Claw

4) Attach the drain guide.

– 84 –

No.

Part name

Procedures

Remarks

Electric parts 1) Follow the procedure up to 4) in

box assembly

above.

‚

2) Remove screw of earth lead attached to the

end plate of the evaporator.

3) Remove the lead wire cover, and remove

connector (5P) for the fan motor and connec-

tor (5P) for the louver motor from the electric

parts box assembly.

4) Pull out TC sensor from sensor holder of the

evaporator.

TC sensor

Fan motor

connector

Louver moter

connector

Screw

Fixing screw

5) Disengage the two claws at the top of the

display unit.

(They can be easily disengaged by pressing

the drain pan above the claws and at the

same time pulling the display unit toward you.)

Press the

drain pan

6) Remove the fixing screw that secures the

electric parts box assembly, and remove the

assembly.

Pull the display

unit toward you

1) Hook the top part of the electric parts box

assembly onto the claws on the back body,

and secure it using the fixing screw.

Now attach the display unit. Connect the

connectors for the fan motor and louver motor.

2) Secure the grounding wire using the fixing

screw. Insert the TC sensor into the sensor

holder.

* Be absolutely sure to loop the grounding

wire and TC sensor leads once at the

bottom.

– 85 –

No.

Part name

Procedures

Remarks

Horizontal louver 1) Remove shaft of the horizontal

louver from the back body.

„

(First remove the left shaft, and

then remove other shafts while

sliding the horizontal louver

leftward.)

Slide the horizontal

louver leftward

Evaporator

1) Follow to the procedure in the item

ꢀ

(Heat exchanger)

2) Remove the pipe holder from the rear side of the main unit.

3) Remove two fixing screws at the left side of the end plate of the heat exchanger.

Pipe holder

Disengage the claw

4) Remove the heat exchanger fixing holder

Screw

by removing the two fixing screws used to

secure it.

Heat exchanger

fixing holder

Screw

5) Remove right side of the end plate from

two fixing ribs while sliding slightly the

heat exchanger rightward.

– 86 –

No.

Part name

Procedures

Remarks

Bearing

1) Follow to the procedure in the items

†

2) Remove the two fixing screws used to secure

the left edge panel of the heat exchanger, and

remove the two screws used to secure the

bearing base.

Screw

Bearing

base

Screw

3) Raise the left side of the heat exchanger

slightly, and remove the bearing base.

Raise the left side

• If the bearing is out from the housing, push it

into the specified position and then incorporate

it in the main body.

• After assembling the bearing base, check that it

is fitted into the stepped part of the drain pipe.

Remove in this direction

Bearing base

Bearing

Drain pipe

Bearing base

– 87 –

No.

Part name

Procedures

Remarks

Fan motor

1) Follow to the procedure in the item

‡

2) Loosen the set screw of the cross flow fan.

3) Remove two fixing screws of the motor band

(Right), and then remove the motor band

(Right).

4) Pull the fan motor outward.

In assembling work, install the fan motor as

follows.

Set screw

• When assembling the fan motor, the fan

motor must be installed in such a way that

the fan motor leads will be taken out is

positioned at the bottom front.

• After assembling the two hooking claws of

the motor band (right) into the main body,

position the fan motor, insert it, and then

secure the motor band (right) using the two

fixing screws.

Secure using

the fixing screw

Screw

Motor band (Right)

Screw

Secure using

the fixing screw

Fan motor leads

Cross flow fan 1) Follow to the procedure in the item

†

2) Remove the heat exchanger fixing holder by

removing the two fixing screws used to

secure it.

Raise the

left side

3) Loosen the set screw of the cross flow fan.

4) Lift the left side of the heat exchanger, and

pull out the cross flow fan.

Pull out here

– 88 –

No.

Part name

Cross flow fan <Caution at reassembling>

1) At assembling work of the bearing base,

Procedures

Remarks

check that the drain pipe is surely incorpo-

rated in the back body.

(Otherwise, water leak is caused.)

2) To incorporate the fan motor, remove the fan

motor rubber (at shaft core side), incorporate

the motor into the position in the following

figure, and then install the fan motor.

Bearing base

Drain pipe

• Install the cross flow fan so that the right

end of the 1st joint from the right of the

cross flow fan is set keeping 70.5 mm from

wall of rear plate of the main unit.

• Holding the set screw, install the cross flow

fan so that U-groove of the fan motor comes

to the mounting hole of the set screw.

Joint

70.5mm

• Perform positioning of the fan motor as

follows:

• When assembling the fan motor, the fan

motor must be installed in such a way that

the fan motor leads will be taken out is

positioned at the bottom front.

• After assembling the two hooking claws of

the motor band (right) into the main body,

position the fan motor, insert it, and then

secure the motor band (right) using the two

fixing screws.

U groove

– 89 –

12-2. Microcomputer

No.

Part name

Procedure

Remarks

Common procedure 1) Turn the power supply off to stop the

operation of air-conditioner.

Replace terminal block,

microcomputer ass’y and the

P.C. board ass’y.

2) Remove the front panel.

• Remove the 2 fixing screws.

3) Remove the electrical part base.

<P.C. board layout>

R05

L01 C01 CN23 FUSE R04 R01

CN10

DB01

C03

T01

IC01

C20 IC03

J04

– 90 –

12-3. Outdoor Unit

No. Part name

Procedure

NOTE

Remarks

Common

1. Detachment

procedure

Upper cabinet

Water

proof

cover

Wear gloves for this job.

Otherwise, you may injure your

hands on the parts, etc.

1) Stop operation of the air conditioner,

and turn off the main switch of the

breaker for air conditioner.

2) Remove the valve cover.

(ST1TØ4 × 8L 1 pc.)

• After removing screw, remove the

valve cover pulling it downward.

3) Remove wiring cover (ST1TØ4 × 8L

2 pcs.), and then remove connecting

cable.

Valve cover

4) Remove the upper cabinet.

(ST1TØ4 × 8L 5 pcs.)

• After removing screws, remove the

upper cabinet pulling it upward.

2. Attachment

1) Attach the water-proof cover.

Insert the bent part

into the rear panel

of the inverter

NOTE

Bring into contact

against these parts

The water-proof cover must be

attached without fail in order to

prevent rain water, etc. from entering

inside the indoor unit.

2) Attach the upper cabinet.

(ST1TØ4 × 8L 5 pcs.)

3) Perform cabling of connecting cable,

and attach the wiring cover.

Align the stitch line

with the top edge

of the front cabinet

Bend downward, and align

with the inside surface

of the front cabinet

• Place the wiring cover over the

opening used to work on the con-

necting wires of the side cabinet,

and secure it using the two fixing

screws (ST1TØ4 × 8L 2 pcs.).

At this point, the top cushion of the

wiring cover must be on the inside of

the opening.

How to mount the water-proof cover

4) Attach the valve cover.

(ST1TØ4 × 8L 1 pc.)

• Insert the upper part into the square

hole of the side cabinet, set hook

claws of the valve cover to square

holes (at three positions) of the main

unit, and attach it pushing upward.

– 91 –

No.

Part name

Procedure

Remarks

Front cabinet 1. Detachment

‚

1) Perform step 1 in

2) Remove the fixing screws (ST1TØ4 × 8L

2 pcs.) used to secure the front cabinet

and inverter cover, the screws (ST1TØ4

× 8L 3 pcs.) used to secure the front

cabinet at the bottom, and the fixing

screws (ST1TØ4 × 8L 2 pcs.) used to

secure the motor base.

• The front cabinet is fitted into the side

cabinet (left) at the front left side so

pull up the top of the front cabinet to

remove it.

Front cabinet

2. Attachment

1) Insert the claw on the front left side into

the side cabinet (left).

2) Hook the bottom part of the front right

side onto the concave section of the

bottom plate. Insert the claw of the side

cabinet (right) into the square hole in the

front cabinet.

Claw

3) Return the screws that were removed

above to their original positions, and

attach them.the main unit, and attach it

pushing upward.

Square

hole

Concave section

– 92 –

No.

Part name

Procedure

1) Perform work of item 1 in

Remarks

Inverter

assembly

Inverter cover

2) Remove screw (ST1TØ4 × 8L 2 pcs.) of the

upper part of the front cabinet.

P. C. board

(Soldered surface)

• If removing the inverter cover in this

condition, P.C. board can be checked.

• If there is no space above the unit, perform

work of 1 in

‚

Be careful to check the inverter because

high-voltage circuit is incorporated in it.

Plug of

soldering

iron

Discharging position

(Discharging period

10 seconds or more)

3) Perform discharging by connecting

polarity by discharging resistance (approx.

100Ω40W) or plug of soldering iron to

terminals a of the C14 (printed “CAUTION

HIGH VOLTAGE” is attached.) electrolytic

capacitor (760µF) on P.C. board.

Be careful to discharge the capacitor

because the electrolytic capacitor

cannot naturally discharge and voltage

remains according to trouble type in

some cases.

A screw

(STIT-4X8MSZN)

Terminal block

NOTE

This capacitor is one with mass capacity.

Therefore, it is dangerous that a large

spark generates if short-circuiting

between

polarity with screwdriver,

etc. for discharging.

4) Remove screw (ST1TØ4 × 8L 2 pcs.) fixing

the main body and the inverter box.

Put the compressor Put each leads

leads through

the hole

through the hole

5) Remove the front cabinet by performing step

1 in , and remove the fixing screws

‚

(ST1TØ4 × 8L) for securing the main body

and inverter box.

The connector is one

with lock, so remove

it while pushing the

part indicated by an

arrow.

6) Remove various lead wires from the holder

at upper part of the inverter box.

7) Pull the inverter box upward.

8) Disconnect connectors of various lead wires.

Requirement

As each connector has a lock mecha-

nism, avoid to remove the connector by

holding the lead wire, but by holding the

connector.

Be sure to remove the connector by

holding the connector, not by pulling

the lead wire.

– 93 –

No.

Part name

Procedure

Remarks

Control board 1. Disconnect the leads and connectors connected to

„

assembly

the other parts from the control board assembly.

1) Leads

CN603

CN601 CN600

• 3 leads (black, white, orange) connected to

terminal block.

CN701

CN300

• Lead connected to compressor :

Disconnect the connector (3P).

CN700 CN602

• Lead connected to reactor :

Disconnect the two connectors (2P).

2) Connectors (×8)

CN300 : Outdoor fan motor (3P: white)*

(See NOTE)

CN300, CN701, CN600 and

CN603 are connectors with

locking mechanisms: as such,

to disconnect them, they must

be pressed in the direction of

the arrow while pulling them

out.

CN701 : 4-way valve (2P: yellow)*

CN600 :TE sensor (2P: white)*

CN700 : PMW (6P: white)

CN603 :TS sensor (3P: white)*

CN601 :TD sensor (3P: white)*

CN602 :TO sensor (2P: white)

NOTE

These connectors have a disconnect prevention

mechanism: as such, the lock on their housing

must be released before they are disconnected.

2. Remove the control board assembly from the P.C.

board base. (Remove the heat sink and control

board assembly while keeping them screwed

together.)

NOTE

P.C. board base

P.C. board

Disengage the four claws of the P.C. board base,

hold the heat sink, and lift to remove it.

3. Remove the two fixing screws used to secure the

heat sink and control board assembly.

4. Mount the new control board assembly.

NOTE

When mounting the new control board assembly,

ensure that the P.C. board is inserted properly

into the P.C. board support groove.

– 94 –

No.

Part name

Procedure

1. Side cabinet (right)

1) Perform step 1 in

Remarks

Side cabinet

ꢀ

and all the steps in

‚

2) Remove the fixing screw (ST1TØ4 × 8L

5 pcs.) used for securing the side

cabinet to the bottom plate and valve

fixing panel.

2. Side cabinet (left)

1) Perform step 1 in

‚

Hook the claw onto

the bottom plate here.

2) Remove the fixing screw (ST1TØ4 × 8L

1 pcs.) used to secure the side cabinet

(left) onto the heat exchanger.

3) Remove the fixing screw (ST1TØ4 × 8L

2 pc.) used for securing the side cabinet

to the bottom plate and heat exchanger.

The back body section is hooked

onto the bottom plate here.

Detail A

Detail B

Detail C

Fan motor

1) Perform work of item 1 of

and

‚

†

2) Remove the flange nut fixing the fan motor

and the propeller.

• Flange nut is loosened by turning clock-

wise. (To tighten the flange nut, turn

counterclockwise.)

Propeller fan

Fan motor

3) Remove the propeller fan.

4) Disconnect the connector for fan motor

from the inverter.

5) Remove the fixing screws (2 pc.) holding

by hands so that the fan motor does not

fall.

* Precautions when assembling the fan

motor

Flange nut

Tighten the flange nut using a tightening

torque of 4.9 N•m.

– 95 –

No.

Part name

Procedure

Remarks

Compressor 1) Perform work of item 1 of

and

‚ ƒ „

‡

ꢀ

2) Extract refrigerant gas.

3) Remove the partition board.

(ST1TØ4 × 8L 3 pcs.)

4) Remove the sound-insulation material.

5) Remove terminal cover of the compressor,

and disconnect lead wire of the compressor

from the terminal.

6) Remove pipe connected to the compressor

with a burner.

Partition

board

Valve

fixing

plate

Compressor

• Take care to keep the 4-way valve away

from naked flames. (Otherwise, it may

malfunction.)

7) Remove the fixing screw of the bottom plate

and heat exchanger. (ST1TØ4 × 8L 1 pc.)

8) Remove the fixing screw of the bottom plate

and valve fixing plate.

(ST1TØ4 × 8L 1 pc.)

9) Pull upward the refrigeration cycle.

10) Remove BOLT (3 pcs.) fixing the compres-

sor to the bottom plate.

* Precautions when assembling the com-

pressor.

Tighten the compressor bolts using a

tightening torque of 4.9 N•m.

Reactor

1) Perform work of item 1 of , and

‚

2) Remove screws fixing the reactor.

(ST1TØ4 × 8L 4 pcs.)

Reactor

– 96 –

No.

Part name

Electronic

expansion valve

coil

Procedure

Remarks

1. Detachment

1) Perform step 1 in , all the steps in

‰

‚

and 1 in

ꢀ

2) Remove the coil by pulling it up from the

electronic control valve body.

Coil

anti-turn

lock

2. Attachment

1) When assembling the coil into the valve

body, ensure that the coil anti-turn lock is

installed properly in the pipe.

Coil anti-turn

lock position

Coil inserting

position

When handling the parts, do not pull the leads.

When removing the coil from the valve body, use

your hand to secure the body in order to prevent

the pipe from being bent out of shape.

Fan guard

1. Detachment

1) Perform work of item 1 of

‚

2) Remove the front cabinet, and put it down

so that fan guard side directs downward.

Minus screwdriver

Hooking claw

Perform work on a corrugated cardboard,

cloth, etc. to prevent flaw to the product.

3) Remove the hooking claws by pushing minus

screwdriver according to the arrow mark in

the right figure, and remove the fan guard.

2. Attachment

1) Insert claws of the fan guard in the holes

of the front cabinet. Push the hooking

claws (9 positions) by hands and fix the

claws.

All the attaching works have completed.

Check that all the hooking claws are fixed

to the specified positions.

– 97 –

No.

Part name

Procedure

Remarks

TE sensor (outdoor heat exchanging temperature sensor)

• Attachment

With the leads pointing downward and the sensor leads

pointing in the direction shown in the figure, install the sensor

onto the straight pipe part of the condenser output pipe.

Detail A

Arrow D

Detail B

Detail C for 13, 16GAVP-E

Detail C for 10GAVP-E

Detail C

TS sensor (Suction pipe temperature sensor)

• Attachment

• Shown in the above figure is the

model 13GAVP-E.

With its leads pointing downward, point the sensor in the

direction of the packed valve, and install it onto the straight

pipe part of the suction pipe.

• The sensor mounting positions

in the model 10GAVP-E are all

the same with the sole excep-

tion of the TE sensor. Refer to

the figure shown on the left.

TD sensor (Discharge pipe temperature sensor)

• Attachment

With its leads pointed downward, install the sensor onto the

vertical straight pipe part of the discharge pipe.

TO sensor (Outside air temperature sensor)

• Attachment

Insert the outdoor air temperature sensor into the holder, and

install the holder onto the heat exchanger.

Arrow D

TO sensor

Detail B

TS sensor

Detail A

TD sensor

CAUTION

During the installation work (and on its completion), take care not to damage the coverings of

the sensor leads on the edges of the metal plates or other parts. It is dangerous for these

coverings to be damaged since damage may cause electric shocks and/or a fire.

CAUTION

After replacing the parts, check whether the positions where the sensors were installed are the

proper positions as instructed. The product will not be controlled properly and trouble will result

if the sensors have not been installed in their proper positions.

– 98 –

No.

Part name

Procedure

Remarks

Replacement of

temperature sensor

for servicing only

1) Cut the sensor 100 mm longer than old

one.

Cutting here

100

Thermal

sensor part

Connector

2) Cut the protective tube after pulling out

it (200 mm).

Common service

parts of sensor TO,

TS, TE, TD

3) Move the protective tube toward the

thermal sensor side and tear the tip of

lead wire in two then strip the covering

part.

Cutting here

200

4) Pass the stripped part through the

thermal constringent tube.

Thermal

constringent tube

5) Cut the old sensor 100 mm length on

the connector side, and recycle that

connector.

Cutting here

100

6) Tear the lead wire in two on the con-

nector side and strip the covering part.

7) Twist the leads on the connector and

sensor sides, and solder them.

Soldered part

8) Move the thermal constringent tubes

toward the soldered parts and heat

them with the dryer and constring

them.

Dryer

9) Wind the attached color tape round the

both terminals of the protective tube

when colored protective tube is used.

Winding the color tape

10) Fix the sensor again.

NOTE

1) Store the joint part of the sensor and the connector in the electric parts

box.

2) Never joint them near the thermal sensor part. Otherwise it would cause

insulation inferiority because of dew drops.

3) When replacing the sensor using the colored protective tube, wind the

color tape matching the color of that tube.

These are parts for

servicing sensors.

Parts name

Q'ty

Remarks

Length : 3m

Sensor

Please check that

the accessories

shown in the right

table are packed.

Sensor Spring (A)

Sensor Spring (B)

Thermal constringent tube

Color tape

For spare

Including one spare

9 colors

Terminal

– 99 –

MCC-5009

– 100 –

13. EXPLODED VIEWS AND PARTS LIST

13-1. Indoor Unit (1)

240

238

234

247

217

209

213

214

216

235

225, 226

212

236

230

223

203

201

221, 222, 224

246

215

211

210

218, 219

207

227

206

205

202

228

245

239

229

204

232

233

∗ The parts in the following parts list are conformed to RoHS.

Therefore be sure to use the following parts for repairing and replacing.

Location

No.

Part

No.

Location

No.

Part

No.

Description

201

202

203

204

205

206

207

209

210

211

212

213

214

215

216

217

218

219

43005633 Panel Ass’y, Front

43005610 Grille, Air Inlet

4301V052 Plate, Fix

43080512 Filter, Air, Right

43080521 Filter, Air, Left

43009675 Louver, Horizontal

43009682 Louver, Vertical

4302C067 Motor, Fan

4302C063 Motor, Louver

4306A024 Cord, Motor, Louver

43039363 Band, Motor, Left

43039321 Base, Bearing

43020346 Fan, Cross Flow

43039314 Band, Motor

223

43049674 Spring, Suction

(B16GKVP-E)

43047673 Pipe, Inlet

224

225

43044803 Evaporator

(B10GKVP-E, B13GKVP-E)

43044804 Evaporator (B16GKVP-E)

43039324 Guide, Drain

226

227

228

229

230

232

233

234

235

236

238

239

240

245

246

247

43049728 Guide, Drain, Left

43019904 Holder, Sensor

43049770 Holder, Evaporator, Right

43062256 Cover, Terminal

43062247 Cover, Lead

43082293 Plate, Installation

4306S577 Remote Controller

43083071 Holder, Remote, Comtroller

43003307 Body Ass’y, Back

43070188 Hose, Drain

43020253 Bearing

4301V028 Holder, Pipe

43049701 Pipe, Shield (B16GKVP-E)

43079268 Cap, Drain

43049698 Pipe, Shield

43080516 Electrical Air Purifying Filter

43080527 Generator Ass’y, HV

4308N732 Owner’s Manual

(B10GKVP-E, B13GKVP-E)

221

222

43047671 Pipe, Outlet

(B10GKVP-E, B13GKVP-E)

43047672 Pipe, Outlet (B16GKVP-E)

– 101 –

Indoor Unit (2)

402

407, 408, 409

403

404

406

410

401

405

∗ The parts in the following parts list are conformed to RoHS.

Therefore be sure to use the following parts for repairing and replacing.

Location

No.

Part

No.

Location

No.

Part

No.

Description

401

402

403

404

405

406

4306A123 Terminal Block, 2P

43062263 Cover, E-Parts

43050425 Sensor, TC (F6)

43050426 Sensor, TA

407

408

409

410

4306S709 P.C. Board Ass’y

(B10GKVP-E)

4306S710 P.C. Board Ass’y

(B13GKVP-E)

4306S711 P.C. Board Ass’y

(B16GKVP-E)

4306S728 P.C. Board Ass’y, WRS-LED

43051346 SW-Micro Ass’y

43067115 Clamp, Cord

– 102 –

13-2. Outdoor Unit

28, 29

30, 31

14, 15, 17, 18, 20

21, 23, 24, 25, 26

11, 12

13, 16, 19, 22

– 103 –

∗ The parts in the following parts list are conformed to RoHS.

Therefore be sure to use the following parts for repairing and replacing.

Location

No.

Location

No.

Part

Description

Part

Description

43005657 Cabinet, Front

43005642 Cabinet, Upper

43005658 Cabinet, Side, Right

43005634 Cabinet, Side, Left

4301V035 Guard, Fan

43047681 Cap, Valve, Packed, 12.7

(16GAVP-E)

43047674 Cap, Charge, Port

(10GAVP-E, 13GAVP-E)

43047675 Cap, Charge, Port

(16GAVP-E)

4301V053 Guard, Fin

44246239 Tube, Capillary, I.D 1.2

(13GAVP-E, 16GAVP-E)

43042489 Base Ass’y

43119471 Cover, Valve, Packed

43062262 Cover, Wiring Ass’y

43046444 Valve, 4-Way,

STF-0108Z, RoHS

43041634 Compressor,

DA111A1F-20F1, RoHS

43046443 Coil, 4-Way valve

37546848 Valve, Pulse, Motor,

CAM-B22YGTF-3

43043749 Condenser Ass’y

(10GAVP-E)

37546849 Coil, PMV, CAM-MD12TF-6

43058277 Reactor

43043751 Condenser Ass’y

(13GAVP-E, 16GAVP-E)

4302C068 Motor, Fan, ICF-140-43-4R

43020329 Fan, Propeller, PJ421

43047669 Nut, Flange

37546845 Valve, Packed, 6.35

43046442 Valve, Packed, 9.52

(10GAVP-E, 13GAVP-E)

43039392 Base, Motor Ass’y

43004233 Plate, Partition

37546846 Valve, Packed, 12.7

(16GAVP-E)

4301V064 Plate, Fix, Valve, Packed

43032441 Nipple, Drain

43147196 Bonnet, 1/4 IN

43047401 Bonnet, 3/8 IN

(10GAVP-E, 13GAVP-E)

43089160 Cap, Waterproof

4301P703 Mark, TOSHIBA

4301P702 Mark, DAISEIKAI

43049749 Rubber, Cushion

43062176 Sleeve, Flag

43147195 Bonnet, 1/2 IN (16GAVP-E)

43047676 Nut, Flare, 6.35

43047677 Nut, Flare, 9.52

(10GAVP-E, 13GAVP-E)

43047678 Nut, Flare, 12.7 (16GAVP-E)

43047679 Cap, Valve, Packed, 6.35

43063321 Holder, Sensor (TD)

43063322 Holder, Sensor (TS)

43063325 Holder, Sensor (TE)

43063339 Holder, Sensor (TO)

43047680 Cap, Valve, Packed, 9.52

(10GAVP-E, 13GAVP-E)

– 104 –

13-3. P.C. Board Layout

704 Base, P.C. Board

706 Sensor, TD (Ø4)

701 Sensor, TE

702 Sensor, TS

703 Sensor, TO

707 P.C. Board Ass’y

705 Terminal (6P)

∗ The parts in the following parts list are conformed to RoHS.

Therefore be sure to use the following parts for repairing and replacing.

Location

No.

Location

No.

Part

Description

Part

Description

701

702

703

704

43050422 Sensor, TE

43050423 Sensor, TS

43050427 Sensor, TO

43062228 Base, P.C. board

705

706

707

43160566 Terminal Block, 6P

43050430 Sensor, TD

4306S737 P.C. board Ass’y, MCC5009

– 105 –

Appendix

Cord Heater Installation Work

Applicable Models: RAS-10GAVP-E, RAS-13GAVP-E, RAS-16GAVP-E

1. Required parts for installation work (Recommendation)

The above products conform to RoHS (2002/95/EC).Therefore when procuring and using the following recom-

mended parts at local site, it is recommended to confirm each part conforms to RoHS before use.

No. Part name Q’ty

Specifications/Vendor

Remarks

Cord heater

Thermostat

Drain line heaters CSC2 (1.5m, 40W/m) by Flexelec com.

(Please go to the following URL.)

http://www.flexelec.com

Procured locally

US-622AXRLQE by ASAHI KEIKI

Operating temperature: on 4 ± 4°C, off 15 ± 3°C

Procured locally

A thermostat holder is incorporated with a thermostat in the package.

(Please go to the following URL.)

http://www.asahikeiki.co.jp/product/product.html

On self-responsibility, you can use a product manufactured by other

company (For example, Texas Instruments) if its characteristics are

equivalent to those of ASAHI KEIKI. However, when the shape of the

thermostat holder is different from that of ASAHI KEIKI, apply some

treatment to No.14 thermostat fixing plate and then fix the holder.

Fuse

ES3-5000, 250V / 5A by NAGASAWA Electric Co.

(Please go to the following URL.)

http://www.nagasawa-el.co.jp/

On self-responsibility, you can use a product manufactured by other

company if its characteristics are equivalent to those of NAGASAWA

Electric Co.

Procured locally

Fuse holder

GM1H-02 by NAGASAWA Electric Co.

(Please go to the following URL.)

http://www.nagasawa-el.co.jp/

On self-responsibility, you can use a product manufactured by other

company if its characteristics are equivalent to those of NAGASAWA

Electric Co.

P-shape

clamp

13 Use heat-resistance, weatherproof and non-hydrolytic type.

Material: 4-fluorinated ethylene copolymer

Harness diameter: Ø5.9

Use equivalence with the above specifications.

11 pieces are used to fix the cord heater to the outdoor unit base plate.

One piece is used to fix the power cord to the thermostat fixing plate .

One piece is used to fix the power cord to the terminal fixing plate.

P-shape

clamp

Use heat-resistance, weatherproof and non-hydrolytic type.

Material: 4-fluorinated ethylene copolymer

Procured locally

Harness diameter: Ø9.1

Use equivalence with the above specifications.

One piece is used to fix the cord heater to the outdoor unit base plate.

Screw

12 Self-tapping screw type-B Ø4 × 6mm, truss head, stainless

These screws are used to fix the cord heater to the outdoor unit base

plate with P-shape clamp.

Procured locally

Self-tapping screw type-B Ø4 × 8mm, truss head, stainless

Two screws are used to fix the thermostat fixing plate to the side cabinet (R).

One screw is used to fix the power cord to the thermostat fixing plate.

One screw is used to fix the power cord to the terminal fixing plate.

Screw

Self-tapping screw type-B Ø3.5 × 6mm, pan head

These screws are used to fix the thermostat to the thermostat fixing

plate with the thermostat holder.

Procured locally

10 Faston

#250 They are used for the connecting part to the thermostat.

UL sleeve for #250

Procured locally

11 Sleeve for

Faston

12 Close-end

connector

Use the most appropriate connector with the power cord diameter.

Procured locally

Appendix-1

Appendix

No. Part name Q’ty

Specifications/Vendor

2-cores x 0.75mm² or more, H05RN-F

Remarks

13 Power cord

Procured locally

14 Thermostat

fixing plate

Material: SGCC-Z08, Board thickness: 0.8t

Procured locally

(Drawing attached)

15 PVC tube

Inside diameter Ø8 x outside diameter Ø11 x 70 mm

Procured locally

16 Shield tube

Inside diameter Ø18 x outside diameter Ø26 x 70 mm

Material: Polyethylene foam

17 Bundling tie

Bundling tie for securing the wires

Material: 6/6 nylon

Procured locally

NOTE: The parts on the above table are recommended parts.

2. Required tools for installation work

No.

Part name

Plus screwdriver

Wrench

Specifications

Usage

It is used for disassembling and assembling of each cabinet.

It is used for disassembling and assembling of compressor fixing nuts.

Motor drill

Drill diameter:

Ø3.2 and Ø5.0

It is used to make the additional holes on the base or the side cabinet

(R).

Faston crimping tool Fixing jig for #250

Close-end connec-

tor crimping tool

Cutting plier

Stripper

Cutter knife

Insulation tape

10 Metal-cutting shears

It is used to process the side cabinet (L).

Appendix-2

Appendix

3. Cord heater installation wiring diagram

Fuse

Thermostat

Cord heater

* Be sure to connect the fuse and the thermostat to LIVE side of the cord heater.

Outdoor unit

Earth leakage circuit breaker

Power supply for air conditioner

Power supply for cord heater

NOTE:

Separate the cord heater power from the air conditioner power, and connect it to its exclusive breaker.

By doing so, the power consumption can be decreased because the breaker can be turned off if there is no

possibility of freezing of the base plate in cooling operation, etc.

When the cord heater power is connected to the inverter P.C. board assembly or others without connected to the

exclusive breaker, the control P.C. board of the inverter assembly may cause a failure.

When the cord heater has been mounted on a base plate, do not mount the water-proof cap and drain nipple which

are provided with the outdoor unit on the base plate.

Appendix-3

Appendix

4. Cord heater installation work procedure

No.

Photo / Explanatory diagram

Procedure

Remove each cabinet, inverter assembly, motor base assembly, and partition board assembly.

* Do not damage the electric parts such as cables, connectors, etc. while this work.

Remove the upper cabinet and the valve cover.

Upper cabinet

Related parts / Screws list

Used screw

Part name

Screw type

Quantity

1-1

Upper cabinet

Valve cover

Ø4 × 8

Ø4 × 1

Valve cover

Remove the front cabinet, the wiring cover and the

water-proof cover.

Water-proof

cover

Related parts / Screws list

Wiring cover

Used screw

Part name

1-2

Screw type

Quantity

Front cabinet

Wiring cover

Ø4 × 8

Front cabinet

Remove the side cabinet (R/L) and the inverter

assembly.

Side cabinet (L)

Inverter assembly

Side cabinet (R)

Related parts / Screws list

Used screw

Part name

Screw type

Quantity

1-3

Side cabinet (R)

Side cabinet (L)

Inverter assembly

Ø4 × 8

Remove the inverter assembly.

No. Part name Connector No.

Connector color

White

TE sensor

TD sensor

TO sensor

TS sensor

CN600

CN601

CN602

CN603

White

4-way valve

coil

CN701

Yellow

1-4

PMV coil

CN700

CN300

White

Fan motor

Compressor

lead

(Intermediate connector)

White

Reactor

(2 pieces.)

Appendix-4

Appendix

No.

Photo / Explanatory diagram

Procedure

Remove the motor base assembly, partition plate assembly

and the sound insulation board.

Motor base

assembly

Related parts / Screws list

Partition plate

assembly

Used screw

Part name

Screw type

Quantity

1-5

Motor base assembly

Ø4 × 8

(Including motor and fan)

Partition plate assembly

(Including reactor)

Ø4 × 8

Sound

insulation board

Remove the fixing screws of the heat exchanger and the

valve fixing plate. Remove the compressor fixing bolt.

Valve fixing plate

Heat exchanger

Related parts / Screws list

Used screw

Part name

Screw type

Ø4 × 8

bolt

Quantity

Heat exchanger

Valve fixing plate

Compressor

1-6

Compressor

As shown in the left figure, remove the set of refrigeration cycle

assembly from the outdoor unit base plate.

* In this time, work attentively so that the cycle pipes are not

damaged by dent or deformation. Apply protective

measures to pipes if necessary.

1-7

Appendix-5

Appendix

No.

Photo / Explanatory diagram

Cord heater installation work

Procedure

Drill a hole on the outdoor unit base plate, and fix the cord heater to the outdoor unit base plate using P-shape

clamp.

Connect the cord heater cables.

Using a motor drill, etc., drill Ø3.2 holes on the outdoor unit base plate. (12 positions) See Appendix-10 for the

additional hole positions.

2-1

These holes are used to fix the cord heater to the outdoor unit base plate with P-shape clamp.

Insert the PVC tube into the cord heater.

This tube is designed to protect the cord heater from

the fixing screws used to secure the anchoring feet.

As shown in the left figure, install the cord heater

(1.5m) to the outdoor unit base plate by using P-

shape clamp and screws (Self-tapping screw type-B

Ø4 × 6mm, stainless).

Pay attention to the direction of P-shape clamp so

that it is set to the same direction in the left figure.

The PVC tube must be inserted

into the cord heater between

the fixing screws in order to

protect the cord heater from

these screws.

* If the drain port is frozen due to installation

status, etc., draw around the cord heater so that

the end part of the heater is inserted into the

drain port. In this case, add some fixing

positions to fix the cord heater surely.

2-2

Under no circumstances must

the tube be allowed to ride over

the tip of the fixing screws.

PVC tube

Ø9.1 P-shape clamp

* The end part from the marked part of the cord

heater heats up. When there is the heating part

near the electric parts box, a fire may generate.

Be sure to set the heating part on the outdoor

unit base plate at the fan room side or near it.

(within 20cm from the outdoor unit base plate)

* Be careful that the cord heater does not hit the

fan.

Fix the cord heater without any loosening or sag.

Enlarged

marked part

Heating part

Drill a hole on the side cabinet (R) for fixing the

thermostat fixing plate.

Added hole 2-φ5

Ø5 hole at two positions

When drilling a hole on the side cabinet (R), be

sure not to damage the cabinet.

2-3

Side cabinet (R)

Appendix-6

Appendix

No.

Photo / Explanatory diagram

Procedure

Rework the side cabinet (L) to remove part of it.

Side cabinet (L)

The area to be removed is indicated by the shaded

lines in the left figure.

After removing part of the side cabinet (L), deburr the

edges of the side cabinet (L).

2-4

Delete

Perform end process and bundling of each cable.

Using fixing screws (Self-tapping screw type-B Ø3.5

× 6mm), fix the thermostat to the thermostat fixing

plate.

Close-end connector

insulation tape

Thermostat

Power cord

Perform end process for various lead cables and

connect them according to the wiring diagram.

Attach #250 Faston and UL-approved sleeves each

to the end of lead cables which are connected to the

thermostat.

2-5

Cord heater

* Transparent

Using insulation tape, apply protective measures to

the connected parts by the close-end connectors.

Thermostat

fixing plate

L side

Using P-shape clamp and the screws (Self-tapping

screw type-B Ø4 × 8mm), fix the power cord to the

thermostat fixing plate.

P-shape clamp

Fuse

Fuse holder

When the power cord size does not match with P-

shape clamp, procure the most appropriate one at

the local site.

Appendix-7

Appendix

No.

Photo / Explanatory diagram

Procedure

Assembly

Return a set of the refrigeration cycle assembly into the outdoor unit base plate and reassemble sound insulation

board, partition plate assembly, fan motor assembly, and side cabinet (R/L) as original. Fix the thermostat fixing

plate to the side cabinet (R), built in the inverter assembly, and then connect various cables. After then,

incorporate front cabinet, upper cabinet, wiring cover, and valve cover as before.

Return a set of the refrigeration cycle assembly into the

outdoor unit base plate, and assemble sound insulation

board, partition plate assembly, fan motor assembly, and

side cabinet (R/L) as original.

3-1

Using screws (Self-tapping screw type-B Ø4 × 8mm,

stainless), fix the thermostat fixing plate to the side

cabinet (R).

Thermostat fixing plate

Side cabinet (R)

3-2

After incorporating the inverter assembly as before,

furthermore perform cable process for cord heater and

power cord.

Do not make cord heater loose.

Do not put the heating part near the electric parts box.

For the cord heater, perform cable process so that there

is no looseness or sag at the fan side.

Perform cable process for collected

cord heater and fan motor lead cables.

Perform cable process for the cord heater together with

the fan motor lead cable, and collect the remained part

of cables at cable process part of the inverter.

Secure the power cord for the cord heater to the

terminal block mounting plate using the P-shape clamp,

and pull it out from the wiring area of the side cabinet

(R).

P-shape

clamp

3-3

* Check that there is the marked part of the cord heater

on the outdoor unit base plate or near it.

When there is the heating part near the electric parts

box, a fire may generate.

Power cord for

cord heater

Since the lead wires connected to the cord heater and

thermostat may come into contact with the edges of the

sheet metal or tips of the screws, wrap the shield tubes

around the leads to protect them and use the bundling

ties to secure them.

To keep the lead wires from coming into contact with the

edges of the sheet metal or tips of the screws, wrap the

shield tubes around the leads to protect them and use

the bundling ties to secure them.

3-4

Incorporate front cabinet, upper cabinet, wiring cover, water-proof cover and valve cover as before.

In installation work, connect power cord for the cord heater to another breaker separated from one for power cord

of the air conditioner.

Appendix-8

Appendix

5. Drawing of thermostat fixing plate

2-Ø3.4 burring hole

(Upward)

3-Ø3.4 burring hole

(Downward)

Material: SGCC-Z08,Thickness: 0.8t

Appendix-9

Appendix

6. Diagram showing positions φ3.2 mm holes to be additionally drilled in base plate

Appendix-10

This product is compliant with Directive 2002/95/EC, and cannot be disposed as unsorted municipal waste.

TOSHIBA CARRIER CORPORATION

2 CHOME 12-32, KONAN, MINATOKU, TOKYO, 108-0075, JAPAN

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