FILE NO. SVM-07008-1
SERVICE MANUAL
AIR CONDITIONER
SPLIT WALL TYPE
RAS-10SKV-E / RAS-10SAV-E
RAS-10SKV-A / RAS-10SAV-A
Revised May, 2007
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FILE NO. SVM-07008
CONTENTS
1. SAFETY PRECAUTIONS .......................................................................... 2
2. SPECIFICATIONS ..................................................................................... 4
3. REFRIGERANT R410A ............................................................................. 6
4. CONSTRUCTION VIEWS ........................................................................ 14
5. WIRING DIAGRAM .................................................................................. 16
6. SPECIFICATIONS OF ELECTRICAL PARTS ......................................... 18
7. REFRIGERANT CYCLE DIAGRAM ........................................................ 20
8. CONTROL BLOCK DIAGRAM ................................................................ 22
9. OPERATION DESCRIPTION................................................................... 24
10. INSTALLATION PROCEDURE ................................................................ 47
11. HOW TO DIAGNOSE THE TROUBLE...................................................... 59
12. HOW TO REPLACE THE MAIN PARTS................................................... 79
13. EXPLODED VIEWS AND PARTS LIST ................................................... 89
– 1 –
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FILE NO. SVM-07008
1. SAFETY PRECAUTIONS
For general public use
Power supply cord of outdoor unit shall be more than 1.5 mm2 (H07RN-F or 60245IEC66) 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.
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.
– 2 –
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FILE NO. SVM-07008
• 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.
– 3 –
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FILE NO. SVM-07008
2-2. Operation Characteristic Curve
<Cooling>
<Heating>
6
6
5
4
3
5
4
3
2
1
2
Conditions
Conditions
Indoor : DB 20oC
Outdoor : DB 7oC/WB 6oC
Air Flow : High
Pip Length : 5m
Voltage : 230V
Indoor : DB 27oC/WB 19oC
1
0
Outdoor : DB 35oC
Air Flow : High
Pip Length : 5m
Voltage : 230V
0
0
0
10 20 30 40 50 60 70 80 90 100 110 120
10 20 30 40 50 60 70 80 90 100 110 120
Compressor Speed (rps)
Compressor Speed (rps)
2-3. Capacity Variation Ratio According to Temperature
<Cooling>
<Heating>
105
120
100
95
90
85
80
75
70
65
60
55
50
100
80
60
40
20
Conditions
Conditions
Capacity ratio: 100%
2.5kW (RAS-10SKV-E)
2.5kW (RAS-10SKV-A)
Indoor : DB 27oC/WB 19oC
Indoor Air Flow : High
Pip Length : 5m
Indoor : DB 20oC
Indoor Air Flow : High
Pip Length : 5m
Voltage : 230V
Voltage : 230V
0
32 33 34 35 36 37 38 39 40 41 42 43
Outside Temperature ( oC)
-10
-5
0
5
10
Outside Temperature ( ºC)
– 5 –
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FILE NO. SVM-07008
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.
– 6 –
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FILE NO. SVM-07008
Table 3-2-1 Thicknesses of annealed copper pipes
Thickness (mm)
Nominal diameter
Outer diameter (mm)
R410A
0.80
R22
0.80
0.80
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
– 7 –
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FILE NO. SVM-07008
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.
A
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
1.0 to 1.5
1.0 to 1.5
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
0.8
0.8
1.0
0 to 0.5
0 to 0.5
0 to 0.5
0 to 0.5
1.5 to 2.0
12.70
15.88
2.0 to 2.5
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
0.5 to 1.0
0.5 to 1.0
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
0.8
0.8
1.0
0 to 0.5
0 to 0.5
0 to 0.5
0 to 0.5
1.0 to 1.5
12.70
15.88
1.5 to 2.0
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)
(mm)
A
B
C
D
1/4
3/8
1/2
5/8
6.35
9.52
0.8
0.8
0.8
1.0
9.1
9.2
6.5
9.7
13
20
23
25
17
22
26
29
13.2 13.5
12.70
15.88
16.6 16.0 12.9
19.7 19.0 16.0
– 8 –
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FILE NO. SVM-07008
Table 3-2-6 Flare and flare nut dimensions for R22
Dimension (mm)
Nominal
diameter
Outer diameter
(mm)
Thickness
(mm)
Flare nut width
(mm)
A
B
C
D
1/4
3/8
1/2
5/8
3/4
6.35
9.52
0.8
0.8
0.8
1.0
1.0
9.0
9.2
6.5
9.7
13
20
20
23
34
17
22
24
27
36
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
D
B
A
C
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)
– 9 –
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FILE NO. SVM-07008
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
1
2
Flare tool
Pipe flaring
Ye s
*(Note 1)
¡
Copper pipe gauge for
adjusting projection
margin
Flaring by
conventional flare tool
Ye s
Ye s
Ye s
*(Note 1)
*(Note 1)
Torque wrench
(For Ø12.7)
3
Connection of flare nut
×
×
×
×
4
5
6
Gauge manifold
Charge hose
Evacuating, refrigerant
charge, run check, etc.
Vacuum pump adapter Vacuum evacuating
Ye s
Ye s
×
×
¡
¡
Electronic balance for
Refrigerant charge
refrigerant charging
7
8
9
Refrigerant cylinder
Leakage detector
Refrigerant charge
Gas leakage check
Refrigerant charge
Ye s
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
– 10 –
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FILE NO. SVM-07008
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
Opened
Open/close
valve for charging
Closed
Service port
Electronic balance for refrigerant charging
Fig. 3-4-1 Configuration of refrigerant charging
– 11 –
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FILE NO. SVM-07008
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
Gauge manifold
OUTDOOR unit
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.
– 12 –
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FILE NO. SVM-07008
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
M
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
– 13 –
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FILE NO. SVM-07008
4. CONSTRUCTION VIEWS
4-1. Indoor Unit
Front panel
Air filter
Air inlet
Heat exchanger
740
195
58
Air outlet
Knock out system
Knock out system
60 55
135
55 60
105
500
Connecting pipe (0.37m)
290
605
Drain hose (0.5m)
(Flare 6.35)
Hanger
Connecting pipe (0.37m
(Flare 9.52)
)
For stud bold ( 8~ 10)
For stud bold ( 6)
235
215
235
215
Hanger
56
19
Wireless remote control
Hanger
145
Hanger
135
90
135
145
90
Installation plate outline
Center line
– 14 –
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FILE NO. SVM-07008
4-2. Outdoor Unit
C
L
C
L
−15 −
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FILE NO. SVM-07008
5. WIRING DIAGRAM
5-1. Indoor Unit
– 16 –
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FILE NO. SVM-07008
– 17 –
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FILE NO. SVM-07008
6. SPECIFICATION OF ELECTRICAL PARTS
6-1. Indoor Unit
No.
1
Parts name
Type
Specifications
AC Motor with 145°C thermo fuse
10 kΩ at 25°C
Fan motor (for indoor)
AFS-220-20-4AR
2
Thermo. sensor (TA-sensor)
Micro power module (T101)
Microcontroller unit (IC81)
3
µRM1260V
µPD780076GK-703-9ET-A
4
5
Heat exchanger sensor
(TC-sensor)
10 kΩ at 25°C
6
7
Line filter (L01)
SS11V-R06270
27 mH, AC 0.6A
Diode (D01,D02,D03 and D04)
Capacitor (C03)
S5688J
8
EKMH401VSN470MP20S 47µF, 400V
9
Fuse (F01)
FJL250V3.15A
S7805PIC
3.15A, 250 V
10
Regulator IC (IC12)
5VDC, 0.5A
11
12
Varistor (R21)
Louver motor
TNR10V471K-T8
470V
DC 12V
24BYJ48
– 18 –
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FILE NO. SVM-07008
6-2. Outdoor Unit (RAS-10SAV-E, RAS-10SAV-A)
No.
Parts name
SC coil
Model name
GET-0451
GET-0452
SWT-72
Rating
1
L01
0.6mH, 15A
(Noise filter)
L03
2.0 mH, 10A
2
DC-DC transformer
Primary side DC280V, Secondary
side 7.0 V x 1, 12 V x 1, 17V x 2
3
Reactor
CH-51-Z-T
L=19mH, 10A
SKF-240-20B-1
4
5
Outside fan motor
20W
Fan control relay
G5NB-1A
Coil DC12V Contact AC250V-1.5A
Outside air temp.
sensor (TO sensor)
6
7
(Inverter attached)
10kΩ (25°C)
Heat exchanger temp.
sensor (TE sensor)
(Inverter attached)
(Inverter attached)
10kΩ (25°C)
Dischenge temp.
sensor (TD sensor)
8
9
62kΩ (20°C)
20A, AC250V
Terminal block (6P)
JX0-6B
For protection of switching power source
3.15A, AC250V
10 Fuse
For protection of inverter input overcurrent 25A, AC250V
11
12
13
14
15
16
Electrolytic capacitor
IGBT
LLQ2G501KHUBTF
GT15J321
500µF, DC 400 V x 3 pieces
15A, 600
Compressor
DA89X1C-23FZ
PW-2AL
3-phases 4-poles 750W
OFF: 125 ± 4°C, ON: 90 ± 5°C
15A, 600V
Compressor thermo.
Rectifier
D15XB60-4001
4-way valve coil
−
AC220-240V
17
Running capacitor
DS451155NPQB
AC 450V~, 1.5µF
(for fan motor)
– 19 –
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FILE NO. SVM-07008
7. REFRIGERANT CYCLE DIAGRAM
7-1. Refrigerant Cycle Diagram
RAS-10SKV-E / RAS-10SAV-E
RAS-10SKV-A / RAS-10SAV-A
T1 Temp. measurement
INDOOR UNIT
Indoor heat
exchanger
TC
TA
Cross flow fan
Max. : 10m
Min. : 1m
Chargeless : 10m
P
Pressure measurement
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
Muffler
4-way valve
(STF-0108Z)
Muffler
TD
Compressor
DA89X1C-23FZ
TO
Outdoor heat
exchanger
Ø1.0 x 600
Temp. measurement
T2
Ø1.0 x 600
TE
Refrigerant amount : 0.63kg
Propeller fan
OUTDOOR UNIT
Gas leak check position
Refrigerant flow (Cooling)
Refrigerant flow (Heating)
NOTE :
NOTE :
• The maximum pipe length of this air conditioner is 10 m. The addition charging of refrigevant is
unnecessary because this air condition is design with charge-less specitication.
– 20 –
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FILE NO. SVM-07008
7-2. Operation Data
<Cooling>
Tempeature
condition(°C)
Heat exchanger
pipe temp.
Model name Standard
Indoor
Outdoor Compressor
RAS-
pressure
P (MPa)
fan mode
fan mode
revolution
(rps)
Indoor Outdoor
T1 (°C)
T2 (°C)
27/19
35/-
10SKV-E
0.9 to 1.1
9 to 11
47 to 49
High
High
54
10SKV-A
<Heating>
Tempeature
condition(°C)
Heat exchanger
pipe temp.
Model name Standard
Indoor
Outdoor Compressor
RAS-
pressure
P (MPa)
fan mode
fan mode
revolution
(rps)
Indoor Outdoor
T1 (°C)
T2 (°C)
20/-
7/6
10SKV-E
2.4 to 2.6
43 to 45
0 to 3
High
High
68
10SKV-A
NOTES :
1. Measure surface temperature of heat exchanger pipe around center of heat exchanger path U bent.
(Thermistor themometer)
2. Connecting piping condition : 5 m
– 21 –
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FILE NO. SVM-07008
8. CONTROL BLOCK DIAGRAM
8-1. Indoor Unit
Indoor Unit Control Panel
M.C.U
Functions
Operation
Display
Heat Exchanger Sensor
•
Louver Control
Timer
Display
Temperature Sensor
•
3-minute Delay at Restart for Compressor
•
Motor Revolution Control
Infrared Rays Signal Receiver
Initiallizing Circuit
Infrared
•
•
Processing
(Temperature Processing)
Rays
Indoor
Fan Motor
Clock Frequency
Timer
36.7KHz
Oscillator Circuit
•
Serial Signal Communication
Power Supply
Louver ON/OFF Signal
Circuit
Remote
Control
Louver Motor
Louver Driver
Noise Filter
Serial Signal Transmitter/Receiver
Serial Signal Communication
From Outdoor Unit
REMOTE CONTROL
Infrared Rays
Remote Control
Operation (
)
Operation Mode Selection
AUTO, COOL, DRY, HEAT, FAN ONLY
Temperature Setting
Fan Speed Selection
ON TIMER Setting
OFF TIMER Setting
Louver Auto Swing
Louver Direction Setting
ECO
Hi power
Filter Reset
One Touch
– 22 –
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FILE NO. SVM-07008
8-2. Outdoor Unit (Inverter Assembly)
– 23 –
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FILE NO. SVM-07008
9. OPERATION DESCRIPTION
• Detection of inverter input current and current
9-1. Outline of Air Conditioner Control
release operation
This air conditioner is a capacity-variable type air
conditioner, which uses AC motor both 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 22 to 83 rps is
mounted. The AC motor drive circuit is mounted to the
indoor unit. The compressor and the inverter is mounted
to the outdoor unit.
• 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)
• 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
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.
revolution control
• Defrost control in heating operation (Temp.
measurement by outdoor heat exchanger and
control for 4-way valve and outdoor fan)
The outdoor unit controller receives operation com-
mand from the indoor unit side, and controls the
3. Contents of operation command signal
(Serial signal) from indoor unit controller to
outdoor unit controller
outdoor fan motor. Besides detecting revolution position
of the compressor 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
The following three types of signals are sent from
the indoor unit controller.
drive according to the operation command.
And then, the outdoor unit controller transfers reversely
the operating status information of the outdoor unit to
control 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.)
As the compressor adopts four-pole brushless
DC motor , the frequency of the supply power
from in verter 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.)
• Louver motor control
• Indoor fan motor operation control
• LED (Light Emitting Diode) display control
• The current operation mode
• The current compressor revolution
• Outdoor temperature
• 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
2. Role of outdoor unit controller
• Whether protective circuit operates
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
• 4-way valve control
.
Operations followed to judgment
of serial signal from indoor side
− 24 −
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FILE NO. SVM-07008
9-2. Operation Description
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. Capacity control .......................................................................................................... 30
4. Current release control ............................................................................................... 30
5. Release protective control by temperature of indoor heat exchanger........................ 31
6. Defrost control (Only in heating operation) ................................................................ 32
7. Louver control ............................................................................................................. 33
1) Louver position....................................................................................................... 33
2) Air direction adjustment ......................................................................................... 33
3) Swing ..................................................................................................................... 33
8. ECO operation ............................................................................................................ 34
9. Temporary operation................................................................................................... 35
10. Discharge temperature control ................................................................................... 35
11. Self-Cleaning function ................................................................................................ 36
12. Selt-Cleaning function release ................................................................................... 37
13. Remote-A or B selection ............................................................................................ 38
14. QUIET mode ............................................................................................................. 39
15. COMFORT SLEEP mode ......................................................................................... 39
16. One-Touch Comfort .................................................................................................. 39
17. Hi-POWER Mode ...................................................................................................... 40
9-3. Auto Restart Function................................................................................................41
9-3-1. How to Set the Auto Restart Function .............................. ........................................ 41
9-3-2. How to Cancel the Auto Restart Function ................................................................ 42
9-3-3. Power Failure During Timer Operation ................................................................... 43
9-4. Remote Controller and Its Fuctions .................................................................... 44
9-4-1. Parts Name of Remote Controller ............................................................................. 44
9-4-2. Operation of remote control ...................................................................................... 44
9-4-3. Name and Functions of Indications on Remote Controller ....................................... 45
– 25 −
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FILE NO. SVM-07008
9-2. Operation Description
Item
Operation flow and applicable data, etc.
Description
1. Basic
1. Operation control
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 and 4-way valve.
Remote controller
Selection of
operation conditions
Control contents of remote controller
• ON/OFF (Air conditioner)
• Operation select (COOL/HEAT/AUTO/DRY)
• Temperature setup
• Air direction
ON/OFF
• Swing
• Air volume select (AUTO/LOW/LOW+/MED/MED+/HIGH)
• ECO
• COMFORT SLEEP
• QUIET
• ON timer setup
• OFF timer setup
• Hi POWER
• PRESET
• ONE-TOUCH
Indoor unit
Signal receiving
Indoor unit control
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
Outdoor unit control
• Frequency control of inverter output
• Waveform composite function
• Calculation function
(Temperature calculation)
Inverter
• Compressor
• Outdoor fan motor
• 4-way valve
• AD conversion function
• Quick heating function
• Delay function of compressor reactivation
• Current release function
• GTr over-current preventive function
• Defrost operation function
– 26 –
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FILE NO. SVM-07008
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 and 4-way valve according to the
operation signal sent from the indoor unit.
Operation ON
Setup of remote controller
Indoor fan motor control / Louver control / Operation Hz
Control (Requierment)
Indoor unit control
Sending of operation command signal
Compressor revolution control / Outdoor fan motor control /
Operation Hz control (Include limit control)
4-way valve control
In cooling operation:
In heating operation:
Outdoor unit control
OFF
ON
[
]
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.
Ta
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.
Ta
L– (W5)
(W5+W3) / 2
+
+
1.0
0.5
SUL (W3)
Tsc
Fan speed
− 27 −
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FILE NO. SVM-07008
Item
Operation flow and applicable data, etc.
<In cooling operation>
Description
2. Indoor fan
motor control
(This operation controls the fan speed at indoor unit side.)
* Symbols
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)
UH
H
M+
M
L+
L
: Ultra High
: High
: Medium+
: Medium
: Low+
: Low
L-
UL
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
W6
L
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+
M
(L + M) / 2
W9
M+
H
(M + H) / 2
WC
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.
Ta
˚C
[
]
M+(WB)
+2.5
+2.0
a
b
c
d
e
*3
*4
*5
*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 and air flow rate
Fan speed
RAS-10SKV-E
RAS-10SKV-A
level
COOL HEAT DRY
Fan speed
Air flow rate
(m3/h)
607
576
554
522
486
468
444
402
376
360
334
318
266
239
213
(rpm)
1350
1300
1250
1200
1120
1100
1040
960
910
880
830
800
WF
WE
WD
WC
WB
WA
W9
W8
W7
W6
W5
W4
W3
W2
W1
UH
H
M+
UH
H
M+
UH
H
M+
M
M
M
L+
L
L-
L+
L
L-
UL
SUL
L+
L
L-
UL
SUL
UL
700
650
600
SUL
– 28 –
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FILE NO. SVM-07008
Item
Operation flow and applicable data, etc.
Description
2. Indoor fan
motor control
<In heating operation>
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
W8
3) Min air flow rate is controlled by
temperature of the indoor heat
exchanger (Tc) as shown in Fig. 4.
L
L+
M
(L + M) / 2
WA
AUTO
4) Cold draft prevention, the fan
speed is controlled by temperature
of the indoor heat exchanger (Tc)
as shown in Fig. 6.
M+
H
(M + H) / 2
WE
5) In order to prevent cold draft when
compressor stop during heating
operation. Then louver will move to
upper position and fan speed will
reduce or off.
YES
TC ≥ 42˚C
Min air flow rate control
NO
Limited to Min WD tap
Tc
52
51
42
41
No limit
*Fan speed =
(TC
W8) + W8
(Fig. 4)
Cold draft preventive control
Tc
46
45
[
]
C
TA
b
c
d
e
f
46
45
34
TSC
–0.5
–1.0
–1.5
–2.0
–2.5
–5.0
5.5
L+ (W9)
33
33
32
33
32
21
20
*1
*2
*A+4
*A-4
*A+4
*A-4
*A+4
*A-4
*3
g
Fan speed MANUAL in starting
Fan speed AUTO in stability
Fan speed AUTO in starting
M+ (WD)
H (WE)
*1: Fan speed = (M + -L+) x 1 4 + L+
*2: Fan speed = (M + -L+) x 2 4 + L+
*3: Fan speed = (M + -L+) x 3 4 + L+
(Calculated with linear approximation from M+ and L+)
(Fig. 5)
(Fig. 6)
[In starting and in stability]
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 –
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FILE NO. SVM-07008
Item
Operation flow and applicable data, etc.
Description
3. 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
4. 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.
Outdoor temp.
Cooling current release value Heating current release value
10SAV-E
10SAV-A
3.60A
10SAV-E
10SAV-A
7.72A
45°C
40°C
16°C
11°C
44°C
39°C
5.17A
5.17A
15.5°C
10.5°C
9.26A
10.80A
– 30 –
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FILE NO. SVM-07008
Item
Operation flow and applicable data, etc.
Description
5. Release protective <In cooling/dry operation>
1) When temperature of the indoor
heat exchanger drops below 5°C,
the compressor speed is
control by tempera-
ture of indoor heat
exchanger
(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)
R
When the value is
7˚C
6˚C
5˚C
in Q zone, the
Q
compressor speed
is kept.
P
Reduction of compressor speed
<In heating operation>
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
P
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
52˚C
Q
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.
48˚C
R
Usual heating capacity control
– 31 –
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FILE NO. SVM-07008
Item
Operation flow and applicable data, etc.
Description
6. 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>
• Defrost operation in A to C zones
1) Stop operation of the compressor for
20 seconds.
Start of heating operation
2) Invert (OFF) 4-way valve 10 seconds
Operation time
(Minute)
0’ 10’ 15’
27’40”
34’
after stop of the compressor.
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
<Finish of defrost operation>
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
<Returning from defrost operation>
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 (ON) 4-way valve approx. 40
B zone
C zone
seconds after stop of the compressor.
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.
– 32 –
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FILE NO. SVM-07008
Item
Operation flow and applicable data, etc.
Description
7. 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 louver closes fully is 0°.
1) Louver position in cooling operation
Initial setting of "Cooling storage position"
Louver : Directs downward (48°)
2) Louver position in heating operation
Heating operation/
AUTO (HEAT)
Initial setting of “Heating storage position”
Louver : Directs downward (115.7˚)
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.
– 33 –
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FILE NO. SVM-07008
Item
8. ECO
Operation flow and applicable data, etc.
Description
When pressing [ECO] button on the remote controller, a
Economic operation is performed.
<Cooling operation>
operation
1) The control target temperature
increase 0.5ºC per hour up to 2ºC
starting from the set temperature
<Cooling operation>
This function operates the air conditioner with the difference
between the set and the room temperature as shown in the
following figure.
when ECONO has been received.
2) The indoor fan speed is depend
on presetting and can change
every speed after setting ECO
Frequency
Zone
TA
FAN
operation.
12
11
10
9
Dry Max
*12
+6.5
+6.0
+5.5
3) The compressor speed is
controlled as shown in the left
figure.
*11
*10
+5.0
+4.5
+4.0
8
7
*9
*8
6
5
+3.5
+3.0
+2.5
4
3
+2.0
+1.5
+1.0
2
Min
Hz
1
+0.5
TSC
-0.5
-1.0
-2.0
OFF
1H
2H
3H
4H
Time
* 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
Hz
10SKVR-E, 10SKV-A
22
32
Cool min
Dry max
<Heating operation>
30 minutes
<Heating operation>
→ Time Compressor
1) Setting the compressor speed to
Max. aHz, the temperature zone
in which the operation can be
speed
0Hz
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
–4.0
–5.0
–6.0
–7.0
–8.0
–9.0
–10.0
–11.0
A
B
performed with Max. cHz is
gradually widened after 30
minutes passed when starting
ECO operation.
A
A zone
aHz
2) The indoor fan speed is depend
on presetting and can change
every speed after setting ECO
operation.
B zone
a to cHz
B
C
C
C zone
cHz
10SKV-E
10SKV-A
Hz
a
c
22
52
– 34 –
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FILE NO. SVM-07008
Item
Operation flow and applicable data, etc.
Description
9. Temporary
operation
Pressing [RESET] button starts the temporary opera-
tion of [AUTO] operation. When keeping [RESET]
button pressed for 10 seconds or more, the temporary
[COOL] operation is performed.
1) When pressing [RESET] button, the
temporary [AUTO] operation starts.
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
NO
NO
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
YES
Did you press [RESET] button
for 10 seconds or more?
5) To stop the temporary operation, press
the button again.
NO
Switch to [AUTO RESTART] control.
Temporary [COOL] Operation
10. 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.
– 35 –
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FILE NO. SVM-07008
Item
Operation flow and applicable data, etc.
Description
11. Self-Cleaning
function
1. Purpose
The Self-Cleaning 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
Press “STOP” button
Self-Cleaning operation
When the cooling or dry operation shuts
down, the unit automatically starts the Self-
Cleaning 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
Self-Cleaning operation stops.
Only timer indicator lights, and Self Cleaning operation starts
(The Self-Cleaning 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 or timer-off function is received,
only the timer indicator light.
2) The period of the Self-Cleaning operation
is determined by the duration of the
operation performed prior to the
reception of the stop code.
3) After the Self-Cleaning operation has
been performed for the specified period,
the unit stops operating.
• During Self-Cleaning operations: The louver opens
slightly. The indoor fan operates continuously at
a speed of 500 rpm.
Self-Cleaning operation times
Operation time
Self-Cleaning operation time
No Self-Cleaning operation
performed (0 minutes)
Up to 10 minutes
Cooling: Auto (cooling) Dry 10 minutes
or longer
30 mins.
Heating: Auto (heating)
Auto (fan only)
Shutdown
No Self-Cleaning operation performed
• To stop an ongoing Self-Cleaning operation at any time
Press the start/stop button on the remote controller twice during the Self-Cleaning
operation. (After pressing the button for the first time, press it for the
second time without delay (within 10 minutes).)
– 36 –
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FILE NO. SVM-07008
Item
Operation flow and applicable data, etc.
• Self-Cleaning diagram
Description
11. Self-Cleaning
function
Operation display
ON
OFF
OFF
ON
ON
(500RPM)
FCU fan
OFF
rpm is depend on presetting.
FCU louver
OPEN
OPEN (12.7º)
CLOSE
ON or OFF
depend on presetting of timer function.
ON or OFF
depend on presetting of timer function.
Timer display
ON
ON or OFF
depend on presetting per room temperature.
Compressor
CDU fan
OFF
OFF
OFF
ON or OFF
depend on presetting per room temperature.
OFF
Operation time
Cool mode or dry mode
Self-Cleaning mode
operation more than 10 mins.
operate 30 mins.
Automatically turn-off.
Turn off by remote controller or
timer-off function.
12. Self-Cleaning
function release
How to cencel Self-Cleaning function
To cancel the Self-Cleaning function, proceed as
follows:
• Press [RESET] button one time or use remote
control to turn on air conditioner. Display will show
in green color.
• Hold down the [RESET] button for more than
20 seconds. (The air conditioner will stop suddenly
when the [RESET] is pressed but keep holding it
continue. The will beep 3 times in the first
3 seconds but it is not related to Self-Cleaning
function)
• After holding about 20 seconds, the air conditioner
will beep 5 times without any blinking of display.
• The Self-Cleaning Operation had been cancelled.
Remark
Presetting of Self-Cleaning function above, AUTO-
RESTART function had been cancelled. To set
AUTO-RESTART again, please follow item 9-3-1
How to set Self-Cleaning function
To set the Self-Cleaning function, proceed as follows.
• Press [RESET] button one time or use remote
control to turn on air conditioner. Display will show
in green color.
RESET button
• Hold down the [RESET] button for more than
20 seconds. (The air conditioner will stop suddenly
when the [RESET] is pressed but keep holding it
continue. Then will beep 3 times is the first 3
seconds but it is not related to Self-Cleaning
function)
• After holding about 20 seconds, the air conditioner
will beep 5 times and OPERATION display blinks
5 times.
• The Self-Cleaning function had been set.
Remark
Presetting of Self-Cleaning function above, AUTO-
RESTART function had been cancelled. To set
AUTO-RESTART again, please follow item 9-3-1
− 38 −
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FILE NO. SVM-07008
Item
Operation flow and applicable data, etc.
Setting the remote controller
Description
13. Romote-A or B
selection
1. Purpose
This operation is to operate only one
indoor unit using one remote controller.
To separate using of remote control for each indoor
unit in case of 2 air conditioner are installed nearly.
Remote Control B Setup.
1) Press RESET button on the indoor unit to turn
2. Description
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.
the air conditioner ON.
2) Point the remote control at the indoor unit.
3) Push and hold CHK • button on the Remote
Control by thetip of the pencil. "00" will be shown
shown on the display.
4) Press MODE • during pushing CHK • . "B" will
3. Operation
show on the display and "00" will disappear and
the air conditioner will turn OFF. The Remote
Control B is memorized.
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.)
Note : 1. Repeat above step to reset Remote Control
to be A.
2. Remote Control A has mot "A" display.
3. Default setting of Remote Control from
factory is A.
− 38 −
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FILE NO. SVM-07008
Item
Operation flow and applicable data, etc.
Description
14. QUIET mode
When the [QUIET] button is pressed, the fan of the
indoor unit will be restricted the revolving speed at
Quiet mode is the system which, control the
revolving speed of indoor fan to work
constantly at lower than speed L. In addition,
noise level of indoor unit is less than usual.
−
speed L until the [QUIET] button is pressed once
again (cancel Quiet mode).
Remarks :
1. Quiet mode is unable to work in dry mode.
2. Quiet mode is appropriate to work with less
cooling load and less heating load condition.
Because of the fan speed L- may cause not
enough the cooling capacity or heating
capacity.
15. COMFORT
SLEEP mode
Cooling mode
The principles of comfort sleep mode are:
• Quietness for more comfortable. When
room temperature reach setting temperature
• Save energy by changing room temperature
automatically.
• The preset temperature will increase as
show on ECO operation (Item No. 9)
• Press the [COMFORT SLEEP] button to
choose the operating hours. Repeat
pressing to select the hours.
• The air condition can shut down by itself
automatically.
(1hr, 3hr, 5hr or 9hr)
Remarks:
• If the [COMFORT SLEEP] button is pressed
1. Comfort sleep mode will not operate in dry
again means cancel comfort sleep mode.
mode and fan only mode.
Heating mode
• The preset temperature will drop down as
show on ECO operation (Item No. 9)
• Press the [COMFORT SLEEP] button to
choose the operating hours. Repeat
pressing to setect thehours.
(1hr, 3hr, 5hr or 9 hr)
• If the [COMFORT SLEEP] button is pressed
again means cancel comfort sleep mode.
16. One-Touch
Comfort
One touch comfort is the fully automated operation
that is set according to the preferable condition in
a region.
Operation condition for model to Europe
market
When an indoor unit receives "One Touch
Comfort Signal" from the remote controller,
the indoor unit operates as following.
1) Air conditioner starts to operation when
the signal is received, even if the air
conditioner was OFF.
Fan
Operation
AUTO
AUTO/L
L
*
2) Operation mode is set according to room
temperature, the same as AUTO mode.
3) Target temperature is 24ºC.
Time after operation
starts (min)
0
12
25
4) Louver position is set as stored position
of the operating mode.
*AUTO/L: Fan operates depends on the setting
temperature and room temperature.
5) Fan is controlled as followings.
During the One Touch Comfort mode if the indoor
unit receives any signal with other operation mode,
the unit will cancel the comfort mode and operates
according to the signal received.
− 39 −
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FILE NO. SVM-07008
Item
Operation flow and applicable data, etc.
Description
17. 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 1ºC
(The value of the preset temperature on the
remote controller does not change.)
The indoor unit's fan speed level increase 1 tap
3. Heating operation
• The preset temperature increases 2ºC
(The value of the preset temperature on the
remote controller does not change.)
The indoor unit's fan speed level increase 1 tap
4. The Hi-POWER mode can not be set in Dry
operation
.
− 40 −
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FILE NO. SVM-07008
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.
RESET button
• 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.
RESET button
• While the filter check indicator is on, the RESET button has the function of filter reset betton.
– 41 –
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FILE NO. SVM-07008
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.
RESET button
• 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.
RESET button
9-3-3. Power Failure During Timer Operation
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.
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.
– 42 –
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FILE NO. SVM-07008
9-4. Remote control
9-4-1. Remote control and its functions
11
2
3
4
5
6
7
8
Infrared signal emitter
Start/Stop button
Mode select button (MODE)
Temperature button (TEMP)
Fan speed button (FAN
Swing louver button (SWING)
Set louver button (FIX)
On timer button (ON)
Off timer button (OFF)
9
10 Sleep timer button (SLEEP)
2
Setup button (SET)
Clear button (CLR)
11
12
13 Memory and Preset button (PRESET)
14
15
16
17
18
One Touch button (ONE-TOUCH)
High power button (Hi-POWER)
Economy button (ECO)
Quiet button (QUIET)
Comfort sleep button (COMFORT SLEEP)
19 Filter reset button (FILTER)
20
21
Clock Reset button (CLOCK)
Check button (CHK)
9-4-2. Operation of remote control
1. ONE-TOUCH
Press the "ONE-TOUCH" button for fully automated operation that is customised to the typical consumer
preferences in your region of the world. The coutomised settings control temperature air flow strength, air flow
direction and other settings to provide you alternate contact with "ONE-TOUCH" OF THE BUTTON. If you
prefer other settings you can select from the many other operation functions of your Toshiba unit
Press
ONE-TOUCH : Start the operaton.
2. AUTOMATIC OPERATION
To automatically select cooling, heating, or fan only operation.
1. Press
2. Press
MODE : Select A.
MODE : Select A.
3. COOLING / HEATING / FAN ONLY OPERATION
To automatically select cooling, heating, or fan only operation.
1. Press
2. Press
MODE : Select Cool , Heat , or Fan only
MODE : Set the desired temperature.
.
Cooling: Min. 17°C, Heating : Max, 30°C, Fan Only: No temperature indication
3. Press
HIGH
FAN : Select AUTO, LOW , LOW+ , MED , MED+
.
, or
− 43 −
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FILE NO. SVM-07008
4. DRY OPERATION (COOLING ONLY)
For dehumidification, a moderate cooling performance is controlled automatically.
1. Press
2. Press
MODE : Select Dry
.
MODE : Set the desired temperature.
5. Hi-POWER OPERATION
To automatically control room temperature and airflow for faster cooling or heating
operation (except in DRY and FAN ONLY mode)
Press
HI-POWER : Start and stop the operation.
6. ECO OPERATION
To automatically control room to save energy (except in DRY and FAN ONLY mode)
Press
ECO : Start and stop the operation.
Note: Cooling operation; the set temperature will increase automatically 1 degree/
hour for 2 hours (maximum 2 degrees increase). For heating operation the
set temperature will decrease.
7. TEMPORARY OPERATION
In case of the misplaced or discharged remote control
• Pressing the RESET button, the unit can start or stop
without using the remote control.
• Operation mode is set on AUTOMATIC
operation, preset temperature is 24°C
and fan operation is automatic speed.
8. TIMER OPERATION
Setting the ON Timer
Setting the OFF Timer
ON
OFF
1
Press
: Set the desired ON timer.
Press
: Set the desired OFF timer.
: Set the timer.
SET
SET
2
3
Press
Press
: Set the time.r
Press
Press
CLR
CLR
: Cancel the time.r
Everyday timer allows the user to set both the ON & OFF timers and will be activated on a daily basis.
Setting Everyday Timer
SET
ON
1
2
3
4
Press
Press
: Set the ON timer.
: Set the OFF timer.
Press
Press
.
SET
button during the ( or )
OFF
mark flashing.
(
or
)
• During the every day timer is activation, both arrows
are indicated.
Note:
• Keep the remote control in accessible transmission to the indoor unit;
otherwise, the time lag of up to 15 minutes will occur.
• The setting will be saved for the next same operation.
– 44 –
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FILE NO. SVM-07008
9. PRESET OPERATION
Set your preferred operation for future use. The setting will be memorized by the
unit for future operation (except air flow direction).
1. Select your preferred operation.
2. Press and hold
displays.
PRESET for 3 seconds to memorize the setting. The P mark
3. Press
PRESET : Operate the preset operation.
10. AUTO RESTART OPERATION
To automatically restart the conditioner after the power failure (Power of the unit
must be on.)
Setting
1. Press and hold the RESET button on the indoor unit for 3 seconds to set the
operation. (3 beep sound and OPERATION lamp blink 5 time/sec for 5 secpmds)
• Do not operate ON timer and OFF timer.
2. Press and hold the RESET button on the indoor unit for 3 seconds to cancel the
operation. (3 beep sound but OPERATION lamp does not blink)
11. QUIET OPERATION
To operate at super low fan speed for quiet operation (except in DRY mode)
Press
QUIET : Start and stop the operation.
Note: Under certain conditions, QUIET operation may not provide adequate
cooling or heating due to low sound features.
12. COMFORT SLEEP OPERATION
To save energy while sleeping, automatically control air flow and automatically turn OFF.
Press
COMFORT SLEEP : Select 1, 3, 5 or 9 hrs for OFF timer operation.
Note: The cooling operation, the set temperature will increase automatically
1 degree/hour for 2 hours (maximum 2 degrees increase). For heating operation,
the set temperature will decrease.
13. SLEEP TIMER OPERATION
To start the sleep timer (OFF timer) operation
Press
SLEEP : Select 1, 3, 5 or 9 hrs for OFF timer operation.
− 45 −
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FILE NO. SVM-07008
9-4-3. Name and Functions of Indications on Remote Controller
[Display]
All indications, except for the clock time indicator, are displayed by pressing the button.
1. Transmission mark
5. TIMER and clock time indicator
This transmission mark indicates when the
remote controller transmits signals to the indoor
unit.
The time setting for timer operation or the clock
time is indicated.
The current time is always indicated except
during TIMER operation.
2. Mode indicator
Indicates the current operation mode.
(AUTO : Automatic control, A : Auto changeover
6. 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.
3. Temperature indicator
Indicates the temperature setting.
(17°C to 30°C)
7.
(PRESET) indicator
Flashes for 3 seconds when the PRESET button is
pressed during operation.
4. FAN speed indicator
Indicates the selected fan speed.
The
mark is shown when holding down the
button for more than 3 seconds while the mark is
flashing.
AUTO or five fan speed levels
(
LOW , LOW+
HIGH
, MED
, MED+
,
Press another button to turn off the mark.
) can be shown.
8. ECO indicator
Indicates AUTO when the operating mode is
either AUTO or
Indicates when the ECO is in activated.
: Dry.
Press the ECO button to start and press it again
to stop operation.
9. A, B change indicator remote controller
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.)
9
10. Comfort sleep
2
12
1
13
Indicates when comfort sleep is activaled.
Press comfort sleep button to selectter
10
11. Quiet
Indicates when quiet is activated.
Press quiet button to start and press it again to stop
operation.
12. One-Touch
Indicates when one touch comfort is activated.
Press one-touch button to start the operation.
11
13. Swing
Indicates when louver is swing.
Press swing button to start the swing operation
and press it again to stop the swing operation.
8
5
4
6
3
7
– 46 –
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FILE NO. SVM-07008
10. INSTALLATION PROCEDURE
10-1-1. Installation Diagram of Indoor and Outdoor Units
For the rear left and left piping
Hook
1
Installation plate
Wall
Insert the cushion between
the indoor unit and wall, and
tilt the indoor unit for better
operation.
Do not allow the drain hose to
get slack.
Cut the piping
hole sloped
slightly .
Shield pipe
5
Super Oxi
Deo filter
6
8
Super Sterilizer
filter
Make sure to run the drain
hose sloped downward.
3
Batteries
The auxiliary piping can be
connected to the left, rear left,
rear right, right, bottom right
or bottom left.
Pan head
wood screw
4
Remote control holder
Right
Vinyl tape
Apply after carrying
out a draina ge test.
Rear right
Left
Rear
left
Bottom
right
Bottom left
2
Wireless remote
Insulate the refrigerant pipes
separately with insulation, not
together.
Saddle
Extension drain hose
(Not available, provided
by installer)
6 mm thic k heat resisting
polyethylene f oam
Before installing the wireless remote controller
A
C
L
• Loading Batteries
1. Remove the battery cover.
2. Insert 2 new batteries (AAA type)
following the (+) and ( ) positions.
-
3
Batteries
2
Wireless remote controller
− 47 −
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FILE NO. SVM-07008
10-1-2. Optional installation parts
Part
Parts name
Code
Q'ty
Refrigerant piping
Liquid side : ∅6.35 mm
Gas side : ∅9.52 mm
One
each
A
Pipe insulating material
(polyethylene foam, 6 mm thick)
B
1
One
each
C
Putty, PVC tapes
<Fixing bolt arrangement of outdoor unit>
500 mm
Air inlet
97 mm
Drain outlet
Air outlet
Fig. 9-1-2
•
•
•
Secure the outdoor unit with the fixing bolts and nuts if the unit is likely to be exposed to a strong wind.
∅
∅
Use 8 mm or 10 mm anchor bolts and nuts.
If it is necessary to drain the defrost water, attach drain nipple 9 to the bottom plate of the outdoor
outdoor unit before installing it.
– 48 −
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FILE NO. SVM-07008
10-1-3. Accessory and installation parts
Part
No.
Part
No.
Part
No.
Part name (Q’ty)
Part name (Q’ty)
Part name (Q’ty)
1
2
3
4
5
6
7
8
Installation plate x 1
Remote control holder x 1
Super Oxi Deo filter x 1
Super Sterilizer filter x 1
Mounting screw ∅4 x 25 s x 6
Flat head wood screw
∅3.1 x 16 s x 2
Wireless remote control x 1
9
Drain nipple* x 1
Battery x 2
The part marked with asterisk ( ) is packaged with the
outdoor unit.
*
Others
Name
Owner’s manual
Installation manual
– 49 –
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FILE NO. SVM-07008
10-1-4. 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
New tools for R410A
Applicable to R22 model
Changes
Gauge manifold
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.
Charge hose
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.
Electronic balance
for refrigerant charging
As pressure is hight and gasification speed is fast, it
is difficult to read the indicated value by means of
charging cylinder, as air bubbles occur.
Torque wrench
(nominal diam. 1/2, 5/8)
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.
Flare tool
(clutch type)
By increasing the clamp bar’s receiving hole, strength
of spring in the tool has been improved.
Gauge for projection
adjustment
Used when flare is made by using conventional flare
tool.
Vacuum pump adapter
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.
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.
– 50 –
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FILE NO. SVM-07008-1
10-2-2. Cutting a hole and mounting installation
10-2. Indoor Unit
plate
10-2-1. Installation place
<Cutting a hole>
•
•
•
A place which provides the spaces around the
indoor unit as shown in the above diagram.
A place where there is no obstacle near the air inlet
and outlet.
A place that allows easy installation of the piping to
the outdoor unit.
When installing the refrigerant pipes from the rear.
90 mm
66 mm
•
•
A place which allows the front panel to be opened.
The indoor unit shall be installed as top of the
indoor unit comes to at least 2 m height.
Also it must be avoided to put anything on the top of
the indoor unit.
Pipe hole
CAUTION
Fig. 10-2-2
• Direct sunlight to the indoor unit’s wireless
receiver should be avoided.
1. After determining the pipe hole position on the
mounting plate (A), drill the pipe hole (∅65 mm) at
a slight downward slant to the outdoor side.
• The microprocessor in the indoor unit should not
be too close to RF noise sources.
(For details, see the owner’s manual.)
NOTE:
<Remote controller>
•
When drilling a wall that contains a metal lath, wire
lath or metal plate, be sure to use a pipe hole brim
ring sold separately.
•
•
•
A place where there are no obstacles such as a
curtain that may block the signal from the indoor
unit.
Do not install the remote control in a place exposed
to direct sunlight or close to a heating source, such
as a stove.
Keep the remote control at least 1 m apart from the
nearest TV set or stereo equipment. (This is
necessary to prevent image disturbances or noise
interference.)
The location of the remote control should be
determined as shown below.
<Mounting the installation plate>
Anchor bolt holes
Hook
62
82.5
•
170
85
(Side view)
(Top view)
Indoor unit
1
Installation
plate
Hook
Pipe hole
Hook
Thread
Pipe hole
Indoor unit
7 Mounting screw
Weight
Reception
range
Remote
control
Reception
range
Remote
control
Fig. 10-2-3
Fig. 10-2-1
– 51 –
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FILE NO. SVM-07008
<When the installation plate is directly mounted on 10-2-3. Electrical work
the wall>
1. The supply voltage must be the same as the rated
voltage of the air conditioner.
2. Prepare the power source for exclusive use with the
air conditioner.
1. Securely fit the installation plate onto the wall by
screwing it in the upper and lower parts to hook up
the indoor unit.
2. To mount the installation plate on a concrete wall
with anchor bolts, utilize the anchor bolt holes as
illustrated in the above figure.
CAUTION
3. Install the installation plate horizontally in the wall.
• This appliance can be connected to the mains in
either of the following two ways.
(1) Connection to fixed wiring:
CAUTION
A switch or circuit breaker which disconnects
all poles and has a contact separation of at
least 3 mm must be incorporate in the fixed
wiring. An approved circuit breaker or
switches must used.
When installing the installation plate with a
mounting screw, do not use the anchor bolt hole.
Otherwise the unit may fall down and result in
personal injury and property damage.
(2) Connection with power supply plug:
Attach power supply plug with power cord
and plug it into wall outlet. An approved
power supply cord and plug must be used.
Installation plate
<Keep horizontal direction>
Anchor
bolt
NOTE
Projection
15 mm or less
•
Ensure all wiring is used within its electrical rating.
10 Class
Model
Fig. 10-2-4
-
Power source
50Hz, 220 240 V Single phase
5 mm dia. hole
Maximum
running current
7.5A
7 Mounting
screw
∅4 x 25s
Plug socket &
fuse rating
16A
Power cord
1 mm2 or more
Clip anchor
(local parts)
Fig. 10-2-5
CAUTION
Failure to firmly install the unit may result in
personal injury and property damage if the unit falls.
•
•
In case of block, brick, concrete or similar type
walls, make 5 mm dia. holes in the wall.
Insert clip anchors for appropriate mounting screws
7.
NOTE:
Secure four corners and lower parts of the
•
installation plate with 4 to 6 mounting screws to
install it.
– 52 –
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FILE NO. SVM-07008
10-2-4. Wiring connection
10-2-5. Piping and drain hose installation
<How to connect the connecting cable>
<Piping and Drain Hose Forming>
Wiring of the connecting cable can be carried out
without removing of the front panel.
*
Since dewing results in a machine trouble, make
sure to insulate both the connecting pipes. (Use
polyethylene foam as insulating material.)
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.
3. Insert the connecting cable (according to the local
cords) into the pipe hole on the wall.
4. Take out the connecting cable through the cable
slot on the rear panel so that it protrudes about
15 cm from the front.
5. Insert the connecting cable fully into the terminal
block and secure it tightly with screws.
6. Tightening torque : 1.2 N·m (0.12 kgf·m)
7. Secure the connecting cable with the cord clamp.
8. Fix the terminal cover, rear plate bushing and air
inlet grille on the indoor unit.
Rear right
Rear left
Bottom left
Left
Bottom right
Right
Fig. 10-2-8
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 right side of the front panel for the
bottom left or right connection with a pair of nippers.
CAUTION
• Be sure to refer to the wiring system diagram
labeled inside the front panel.
• Check local electrical cords and also any specific
wiring instructions or limitations.
2. Changing drain hose
For left connection, bottom-leftward connection and
rear-leftward connection’s piping, it is necessary to
change the drain hose and drain cap.
Cord clamp
Terminal block
Terminal cover
Screw
1
2
3
<How to remove the Drains Cap>
Clip drain cap by needle-nose pliers, and pull out.
Earth line
Connecting cable
Screw
Screw
110 mm
Earth line
10 mm
Fig. 10-2-9
Connecting cable
<How to install the Drain Hose>
Firmly insert drain hose connecting part until hitting on
a heat insulator.
10 mm
50 mm
Stripping length of the connecting cable
NOTE :
Heat insulator
• Use stranded wire only.
• Wire type : H07RN-F or more
.
Drain hose
<How to install the air inlet grille on the indoor unit>
• When attaching the air inlet grille, the contrary of the removed
operation is performed.
Fig. 10-2-10
– 53 –
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FILE NO. SVM-07008
<How to fix the Drains Cap>
<Left-hand connection with piping>
1) Insert hexagonal wrench (∅4 mm) in a center head. Bend the connecting pipe so that it is laid within 43 mm
above the wall surface. If the connecting pipe is laid
exceeding 43 mm above the wall surface, the indoor
unit may unstably be set on the wall. When bending the
connecting pipe, make sure to use a spring bender so
as not to crush the pipe.
∅4 mm
Bend the connection pipe within a radius of 30 mm
(∅6.35) 40 mm (∅9.52).
Fig. 10-2-11
To connect the pipe after installation of the unit (figure)
2) Firmly insert drains cap.
(To the forefront of flare)
270 mm
Gas side
No gap
170 mm
Liquid side
Do not apply lubricating oil
(refrigerant machine oil) when
inserting the drain cap. Application
causes deterioration and drain
leakage of the plug.
Outward form of indoor unit
Insert a hexagon
wrench (∅4 mm)
R 30 mm or less (∅6.35) R 40 mm or less (∅9.52)
(Use polisin (polyethylene core) or the like for
bending pipe.)
Fig. 10-2-12
Use the handle of screwdriver, etc.
CAUTION
Fig. 10-2-15
Firmly insert the drain hose and drain cap;
otherwise, water may leak.
NOTE:
If the pipe is bent incorrectly, the indoor unit may
unstably be set on the wall.
After passing the connecting pipe through the pipe
hole, connect the connecting pipe to the auxiliary pipes
and wrap the facing tape around them.
<In case of right or left piping>
•
After scribing slits of the front panel with a knife or a
making-off pin, cut them with a pair of nippers or an
equivalent tool.
CAUTION
• Bind the auxiliary pipes (two) and connecting
cable with facing tape tightly. In case of leftward
piping and rear-leftward piping, bind the auxiliary
pipes (two) only with facing tape.
Slit
Fig. 10-2-13
Indoor unit
Auxiliary pipes
Connecting cable
<In case of bottom right or bottom left piping>
•
After scribing slits of the front panel with a knife or a
making-off pin, cut them with a pair of nippers or an
equivalent tool.
Installation plate
Fig.10-2-16
• Carefully arrange pipes so that any pipe does not
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.
Slit
Fig. 10-2-14
• Since dewing results in a machine trouble, make
sure to insulate both the connecting pipes. (Use
polyethylene foam as insulating material.)
• When bending a pipe, carefully do it not to crush it.
– 54 –
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FILE NO. SVM-07008
10-3-2. Refrigerant piping connection
10-3. Outdoor Unit
<Flaring>
10-3-1. Installation place
1. Cut the pipe with a pipe cutter.
•
•
A place which provides the spaces around the
outdoor unit as shown in the left diagram.
A place which can bear the weight of the outdoor
unit and does not allow an increase in noise level
and vibration.
Roughness
Obliquity
Warp
90°
•
A place where the operation noise and discharged
air do not disturb users neighbors.
Fig. 10-3-2
•
•
•
•
A place which is not exposed to a strong wind.
A place free of a leakage of combustible gases.
A place which does not block a passage.
When the outdoor unit is to be installed in an
elevated position, be sure to secure its feet.
An allowable length of the connecting pipe is up
15 m.
2. Insert a flare nut into the pipe, and flare the pipe.
Projection margin in flaring : A (Unit : mm)
•
A
•
•
An allowable height level is up to 10 m.
A place where the drain water does not raise any
problem.
Die
Pipe
Fig. 10-3-3
CAUTION
Rigid (Clutch type)
1. Install the outdoor unit without anything blocking
the air discharging.
Outer dia.
of copper pipe
R410A
tool used
Conventional
tool used
2. When the outdoor unit is installed in a place
exposed always exposed to strong wind like a
coast or on a high storey of a building, secure
the normal fan operation using a duct or a wind
shield.
6.35
9.52
0 to 0.5
0 to 0.5
1.0 to 1.5
1.0 to 1.5
3. In particularly windy areas, install the unit such
as to avoid admission of wind.
4. Installation in the following places may result in
trouble.
ial (wing nut type)
Imper
Outer dia.
of copper pipe
R410A
Do not install the unit in such places.
• A place full of machine oil.
• A saline-place such as the coast.
• A place full of sulfide gas.
6.35
9.52
1.5 to 2.0
1.5 to 2.0
• A place where high-frequency waves are likely
to be generated as from audio equipment,
welders, and medical equipment.
<Tightening connection>
Align the centers of the connecting pipes and tighten
the flare nut as far as possible with your fingers. Then
tighten the nut with a spanner and torque wrench as
shown in the figure.
Strong
wind
Half union
Flare nut
Internally
threaded side
Externally
threaded side
Fig. 10-3-1
Use a wrench to secure.
Use a torque wrench to tighten.
Fig. 10-3-4
CAUTION
•
•
Do not apply excess torque.
Otherwise, the nut may crack depending on the
conditions.
– 55 –
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FILE NO. SVM-07008-1
(Unit : Nám) 10-3-3. Evacuating
After the piping has been connected to the indoor unit,
you can perform the air purge together at once.
Outer dia.
of copper pipe
Tightening torque
AIR PURGE
∅6.35 mm
16 to 18 (1.6 to 1.8 kgf·m)
30 to 42 (3.0 to 4.2 kgf·m)
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. For details, see the
manual of the vacuum pump.
∅9.52 mm
Tightening torque of flare pipe connections
The operating pressure of R410A is higher than that of
R22. (Approx. 1.6 times).
It is therefore necessary to firmly tighten the flare pipe
connecting sections (which connect the indoor and
outdoor units) up to the specified tightening torque.
Incorrect connections may cause not only a gas
leakage, but also damage to the refrigerant cycle.
<Using a vacuum pump>
Be sure to use a vacuum pump with counter-flow
prevention function so that inside oil of the pump does
not flow backward into pipes of the air conditioner
when the pump stops. (If oil inside of the vacuum pump
enters into the air conditioner, which use R410A,
refrigeration cycle trouble may result.)
1. Connect the charge hose from the manifold valve to
the service port of the gas side packed valve.
2. Connect the charge hose to the port of the vacuum
pump.
Flare at
indoor unit side
3. Open fully the low pressure side handle of the
gauge manifold valve.
4. Operate the vacuum pump to start 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. Then confirm that the compound
pressure gauge reading is −101 kPa (76 cmHg).
5. Close the low pressure side valve handle of gauge
manifold.
6. Open fully the valve stem of the packed valves
(both side of Gas and Liquid).
7. Remove the charging hose from the service port.
8. Securely tighten the caps on the packed valves.
Flare at
outdoor unit side
Fig. 10-3-5
<Shaping pipes>
1. How to shape the pipes
Shape the pipes along the incused line on the
outdoor unit.
2. How to fit position of the pipes
Put the edges of the pipes to the place with a
distance of 85 mm from the incused line.
Compound pressure gauge
Pressure gauge
–101 kPa (76 cmHg)
Manifold valve
Handle Lo
Handle Hi (Keep full closed)
Charge hose (For R410A only)
Connecting pipe
Charge hose (For R410A only)
Vacuum pump adapter for
counter-flow prevention
(For R410A only)
Incused line
Vacuum
pump
Packed valve at gas side
Service port (Valve core (Setting pin))
Fig. 10-3-6
Packed valve at liquid side
Fig.10-3-7
CAUTION
• KEEP IMPORTANT 4 POINTS FOR PIPING
WORK
(1) Take away dust and moisture (Inside of the
connecting pipes.)
(2) Tight connection (between pipes and unit)
(3) Evacuate the air in the connecting pipes using
VACUUM PUMP.
(4) Check gas leak (connected points)
– 56 –
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FILE NO. SVM-07008
<Packed valve handling precautions>
<Stripping length of connection cable>
Open the valve stem all the way out; but do not try
to open it beyond the stopper.
Terminal block
Securely tighten the valve stem cap with torque in
the following table:
Gas side
(∅9.52 mm)
30 to 42 N·m
(3.0 to 4.2 kgf·m)
Power cord
Connecting cable
Liquid side
(∅6.35 mm)
16 to 18 N·m
(1.6 to 1.8 kgf·m)
1
2
3
L
N
9 to 10 N·m
(0.9 to 1.0 kgf·m)
Service port
60
50
45
40
Earth line
Earth line
Hexagonal wrench
is required.
Power cord
Connecting cable
Fig. 10-3-8
Model
RAS-10SKV
Power source
50 Hz, 220 - 240 V Single phase
8A
Fig. 10-3-8
10-3-4. Wiring connection
Maximum
running current
Installation fuse
rating
25A
1. Remove the valve cover from the outdoor unit.
2. Connect the connecting cable to the terminal as
identified with their respective matched numbers on
the terminal block of indoor and outdoor unit.
3. When connecting the connecting cable to the
outdoor unit terminal, make a loop as shown in the
installation diagram of indoor and outdoor unit, to
prevent water coming in the outdoor unit.
H07RN-F or 245 IEC66 (1.5 mm2
or more)
Power cord
CAUTION
• Wrong wiring connection may cause some
electrical parts burn out.
4. Insulate the unused cords (conductors) from any
water coming in the outdoor unit. Proceed them so
that they do not touch any electrical or metal parts.
• Be sure to comply with local codes on running
the wire from indoor unit to outdoor unit (size of
wire and wiring method etc).
• Every wire must be connected firmly.
• This installation fuse (25A) must
be used for the power supply line of this air
conditioner.
If incorrect or incomplete wiring is carried out, it
will cause an ignition or smoke.
Prepare the power supply for exclusive use with
the air conditioner.
This product can be connected to the mains.
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.
NOTE: Connecting cable
• Wire type: More than H07RN-F or 245 IEC66
(1.0 mm2 or more)
– 57 –
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FILE NO. SVM-07008
10-3-5. Gas leak test
10-3-7. Test operation
To switch the TEST RUN (COOL) mode, press
RESET button for 10 sec.
(The beeper will make a short beep.)
Check places for
indoor unit (Flare
nut connection)
Valve cover
Electric parts
cover
Check places
for outdoor unit
Fig. 10-3-13
Fig. 10-3-10
10-3-8. 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.
•
Check the flare nut connections for the gas leak
with a gas leak detector or soap water.
10-3-6. Indoor unit fixing
1. Pass the pipe through the hole in the wall, and hook
the indoor unit on the installation plate at the upper
hooks.
2. Swing the indoor unit to right and left to confirm that
it is firmly hooked up 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 up on the installation plate.
Information
The product was shipped with Auto Restart function
in the off position. Turn it on as required.
<How to set the auto restart>
•
Press and hold the RESET button for about
3 seconds. After 3 seconds, the electronic beeper
makes three short beeps to tell you the Auto
Restart has been selected.
To cancel the Auto Restart, follow the steps
described in the section Auto Restart Function of
the Owner’s Manual.
Hook here
•
1
1
Installation
plate
2
Hook
Press
(unhook)
Fig.10-3-11
•
For detaching the indoor unit from the installation
plate, pull the indoor unit toward you while pushing
its bottom up at the specified parts.
Push
Push
Fig. 10-3-12
– 58 –
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FILE NO. SVM-07008
11. HOW TO DIAGNOSE THE TROUBLE
The pulse modulating circuits are mounted to both
NOTE:
indoor and outdoor units. Therefore, diagnose troubles
according to the diagnosis procedure as described
below. (Refer to the check points in servicing written
on the wiring diagrams attached to the indoor/outdoor
units.)
A large-capacity electrolytic capacitor is used in the
outdoor unit control (inverter). Therefore, if the power
supply is turned off, charge (charging voltage DC280V)
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.
Table 11-1
No.
1
Troubleshooting Procedure
First Confirmation
<Discharging method>
2
Primary Judgment
(1) Remove the inverter cover (plating) by opening four
mounting claws.
3
Judgment by Flashing LED
of Indoor Unit
(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 380 V” is indicated.)
electrolytic capacitor (760µF/400 V) on P.C. board,
and then perform discharging.
4
5
Self-Diagnosis by Remote Control
Judgment of Trouble by
Every Symptom
6
How to Check Simply the Main Parts
Inverter cover
Plug of
soldering
iron
P. C. board
(Soldered surface)
Discharging position
(Discharging period
10 seconds or more)
Fig. 11-1
10-1-2. Confirmation of power voltage
10-1. First Confirmation
Confirm that power voltage is AC 220-240 V ± 10%. If
power voltage is not in this range, the unit may not
operate normally.
10-1-1. Confirmation of power supply
Confirm that the power breaker operates (ON)
normally.
– 59 –
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FILE NO. SVM-07008
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 control-
ling and maintaining of air conditioner.
Table 11-1-1
No.
Operation of air conditioner
Description
1
When power breaker is turned “ON”,
the operation lamp (Green) of the
indoor unit flashes.
The OPERATION lamp of the indoor unit flashes when power source
is turned on. If [ ] button is operated once, flashing stops.
(Flashes also in power failure)
2
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.
3
4
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
For smooth operation of the compressor, the compressor motor speed
is restricted to Max. 41 rps for 2 minutes, and Max.91 rps for 2 minutes
operation started, and then compressor to 3 minutes, respectively after the operation has started.
motor speed increases again approx.
30 seconds after.
5
The set value of the remote control
should be below the room temperature.
If the set value is above the room temperature, Cooling operation is
not performed. And check whether battery of the remote control is
consumed or not.
6
7
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
maximum speed or decreases before
the temperature arrives at the set
temperature.
The compressor motor speed may decrease by high-temp. release
control (Release protective operation by temp.-up of the indoor heat
exchanger) or current release control.
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 control
(3) Judgment of trouble by every symptom
Firstly, use the method (1) for diagnosis. Then, use the method (2) and (3) to diagnose the details of troubles.
– 60 –
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FILE NO. SVM-07008
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
A
Block display
Description for self-diagnosis
B
C
D
E
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 control for servicing.
– 61 –
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FILE NO. SVM-07008-1
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
1
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.
TOSHIBA
2
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 :
PR E S E T
FAN
• • •
TE MP
ONE -TOUCH
MODE
• The TIMER indicator of the indoor unit flashes continuously.
(5 times per 1 sec.)
COMFOR T
S LE E P
• Check the unit with all 52 check codes (
to
)
QUIE T
PUR E
as shown in Table-11-4-1.
S WING
FIX Hi-POWE R E CO
• Press [ON ] or [OFF ] button to change the check
code backward.
CLR
TIME R
If there is a fault, the indoor unit will beep for 10
seconds (Beep, Beep, Beep...).
ON
OFF
S LE E P
S E T
Note the check code on the display of the remote
controller.
CHK
FILTE R
CLOCK
• 2-digits alphanumeric will be indicated on the display.
• All indicators on the indoor unit will flash.
(5 times per 1 sec.)
Press [START/STOP] button to release the service mode.
3
4
• The display of the remote controller returns to as it
was before service mode was engaged.
Alphanumeric characters are
used for the check codes.
is 5.
is A.
is C.
is 6.
is B.
is D.
Time shortening method.
1. Press SET button while pushing CHECK button.
2. Press [START/STOP] button.
Fig. 11-4-1
– 62 –
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FILE NO. SVM-07008
11-4-2. Caution at servicing
(1) After servicing, push the [ ] 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.
Table 11-4-1
Block distinction
Operation of diagnosis function
Air conditioner
Judgment and action
Check
Block
Check
code
Cause of operation
Remarks
code
status
Displayed when
error is detected.
Indoor
P. C.
board
etc.
Short-circuit or disconnec-
tion of the room
temperature sensor
(TA sensor).
Operation
continues.
1. Check the room temp. sensor.
2. When the room temp. sensor is
normal, check P.C. board.
Displayed when
error is detected.
Being out of place,
disconnection, short-circuit,
or migration of heat
exchanger sensor
(TC sensor)
Operation
continues.
1. Check heat exchanger sensor.
2. When heat exchanger sensor is
normal, check P.C. board.
Displayed when
error is detected.
Lock of indoor fan or trouble All off
on the indoor fan circuit
1. Check P.C. board.
2. When P.C. board is normal, check
the motor.
Displayed when
error is detected.
Not
displayed
Trouble on other indoor
P.C. boards
Operation
continues.
Replace P.C. board.
Flashes when
trouble is
Connec-
ting cable
and serial
signal
Return serial signal is not
sent to indoor side from
operation started.
(1) Defective wiring of
connecting cable
(2) Operation of
Operation
continues.
1. When the outdoor unit never
operate:
(1) Check connecting cable, and
correct if defective wiring.
(2) Check 25A fuse of inverter
P.C. board
detected on
return serial
signal, and
normal status
when signal is
reset.
compressor thermo.
Gas shortage
(3) Check 3.15A of inverter
P.C. board.
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 2 and 3 of the
indoor terminal block, replace
inverter P.C. board.
If signal stops between indoor
terminal block 2 and 3, replace
indoor P.C. board.
Flashes when
trouble is
detected on
operation
command signal,
and normal status
when signal is
reset.
Operation command signal
is not sent to outdoor side.
Operation
continues.
If return serial signal does not stop
between indoor terminal block 2
and 3, replace inverter P.C. board.
If signal stops between indoor
terminal block 2 and 3, replace
indoor P.C. board.
– 63 –
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FILE NO. SVM-7008
Block distinction
Operation of diagnosis function
Air conditioner
Judgment and action
Check
Block
Check
code
Cause of operation
Remarks
code
status
Displayed when
error is detected.
Ondoor
P. C.
board
Inverter over-current
protective circuit operates.
(Short time)
All off
Even if trying operation again, all
operations stop immediately. :
Replace P.C. board.
Displayed when
error is detected.
Position-detect circuit error
or short-circuit between
windings of compressor
All off
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.
Displayed when
error is detected.
Current-detect circuit error
All off
All off
Even if trying operation again, all
operations stop immediately. :
Replace P.C. board.
Displayed when
error is detected.
Being out of place,
disconnection or short-
circuit of outdoor temp.
sensor
1. Check outdoor temp. sensors
(TE, TS).
2. Check P.C. board.
Displayed when
error is detected.
Disconnection or short-
circuit of discharge temp.
sensor
All off
All off
1. Check discharge temp. sensor (TD).
2. Check P.C. board.
Displayed when
error is detected.
Outdoor fan drive system
error
Position-detect error, over-current
protective operation of outdoor fan
drive system, fan lock, etc. :
Replace P.C. board or fan motor.
–––
Not
displayed
Outdoor heat exchanger
temp. sensor error
Operation
continues.
1. Check outdoor heat exchanger
temp. sensor (TE).
2. Check P.C. board.
Displayed when
error is detected.
Ondoor
P. C.
board
Compressor drive output
error, Compressor error
(lock, missing, etc.),
Break down
All off
When 20 seconds passed after
startup, position-detect circuit error
occurred. : Replace compressor.
Flashes when
trouble is
Others
(including
compres-
sor)
Return serial signal has
been sent when operation
started, but it is not sent
from halfway.
(1) Compressor thermo.
operation
Gas shortage
Gas leak
(2) Instantaneous power
failure
Operation
continues.
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.)
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.
detected on
return serial
signal, and
normal status
when signal is
reset.
If signal stops between indoor
terminal block, 2 and 3 replace
indoor P.C. board.
Displayed when
error is detected.
Compressor does not
rotate. (Current protective
circuit does not operate
when a specified time
passed after compressor
had been activated.)
All off
1. Trouble on compressor
2. Trouble on wiring of compressor
(Missed phase)
Discharge temp. exceeded
117°C
All off
All off
1. Check discharge temp. sensor (TD).
2. Degassing
3. Trouble on P.M.V.
Displayed when
error is detected.
Break down of compressor
1. Check power voltage. (220-240 V
+10%)
2. Overload operation of
refrigeration cycle
Displayed when
error is detected.
Check installation condition
(Short-circuit of outdoor diffuser.)
Four-way valve inverse error
(TC sensor value lowered
during heating operation.)
1. Check 4-way valve operation.
–––
Operation
continues.
– 64 –
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FILE NO. SVM-07008
11-5. Judgement of Trouble by Every Symptom
11-5-1. Indoor unit (Including remote controller)
(1) Power is not turned on (Does not operate entirely)
Turn off power
supply once, and 5
second later, turn it
on again.
Operation
Check item
Conceivable principle
cause
NO
Is OPERATION
lamp blinking?
Measure
YES
Item by symptoms
Does
Is it possible to
turn on power
supply by
transmission
mark on
NO
NO
remote control
flash normally,
and is its signal
transmitted
properly?
Remote control is
pressing
defective.
[
] button
on remote
control?
YES
Refer to (5)
"Troubleshooting for
YES
Remote Control.
"
Unit operates
normally.
Parts
(D01 ~ D04,
C03, T101
and IC12 are
Does
Is fuse (F01)
of indoor control
board blown?
fan motor
connector
between 1
YES
YES
defective.
3
and
NO
short-circuit?
NO
Is voltage
(DC 12V or 5V)
indicated on
rear of indoor
control board
normal?
Replace main
P.C. board.
NO
YES
Microcomputer
is defective.
Is the
voltage
across C03
mesured
DC 310V~340V?
Refer to
NO
<Primary check>
or this problem
is one step short
of power P.C.
board block.
YES
Are DC 5V,
DC 12V
supplied
to main
P.C. board?
Are DC 5V,
or DC 12V
supplied
to main
P.C. board?
Turn off breaker
once and turn it
on again after
Regulator IC
(IC12) or T101
NO
NO
are defective
removing motor.
YES
YES
Replace 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.
– 65 –
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FILE NO. SVM-07008
(2) Power is not turned on though Indoor P.C. board is replaced
<Confirmation procedure>
Turn on power supply.
NO
NO
Is wired correctly to white and black
Does operation lamp flash?
Correct wiring.
lead wires of terminal board?
YES
YES
To item of
“Power is not turned on”.
– 66 –
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FILE NO. SVM-07008
(3) Only the indoor fan does not operate.
<Check procedure>
Shut off the
power supply once.
Turn the power supply.
NO
Does the fan stop in
no operating status?
Replace the P.C. board.
Control P.C. board is defective.
YES
Start the operation
with low fan setting
in cool operation.
Does connecting
terminal, connecting
cable or power supply
cord completely?
Does not found the short
wire about connecting
cable and power cord?
Does AC 120 V
NO
NO
NO
or higher voltage apply
to between red and black
lead of fan motor?
Does the fan rotate?
YES
YES
YES
Shut off the power supply.
Repair the
bearing of
the fan.
NO
Change the setting of
cooling to high fan.
Does the cross flow
fan rotate normally?
YES
Turn on the power supply.
Motor control circuit failure
(IC31, D301) or 12 V
switching module failure (T101).
NO
Does the fan speed
become higher?
Operation
stops
YES
Replace the P.C. board.
Replace the fan motor.
Is the rotation signal (DC+5 V−0 V)
output between 2 (gray lead wire)
NO
and 3 (brown lead wire) of the motor
connector (CN11) when rotating the
cross flow fan by hand in no operating
status? (1 pulse/one turn)
YES
Replace connecting the
cable (or power cord)
and terminal
Replace the control
P.C. board.
Normal
block.
– 67 –
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FILE NO. SVM-07008
(4) Indoor fan motor starts rotating by turning on power supply alone.
<Cause>
The IC is built in the indoor fan motor. Therefore the P.C. board is also mounted to the 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.
<Confirmation procedure>
(1) Remove the front panel.
(2) Remove cover of the fan motor lead wires.
(3) Check DC voltage with CN31 connector while the fan rotating.
NOTE :
• Do not disconnect the connector while the fan rotates.
• Use a thin tester rod.
P.C. board
Indoor fan starts rotating when power supply breaker is turned “ON”.
CN10
6 (Blue)
(Check output voltage (DC) of the fan motor on P.C. board.)
5 (Yellow)
4 (Blue)
Yellow
Black
Measure the voltage of the motor connector
3 (Yellow)
CN31 pin
2
(GND : Black) and pin
5
(V line : Yellow)
under condition that the indoor fan rotates.
2
—
1 (Red)
Above DC 0.4V
Below DC 0.4V
P.C. board is defective.
Motor is defective.
DC
– 68 –
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FILE NO. SVM-07008
(5) Troubleshooting for remote control
The unit does not beep at all.
OPERATION lamp on
indoor unit is not indicated.
Press [
button.
]
NO
Is transmission
mark indicated?
YES
Press RESET button
on remote control
with tip of pencil.
Is receiver on
NO
indoor unit exposed
to direct sunlight?
YES
Does indoor unit
operate when
moving remote control
near receiver or
indoor unit?
Is there any
thyristor fluorescent
NO
NO
light nearly?
YES
Press [
button.
]
YES
Batteries are
exhausted.
Does indoor unit
NO
NO
Is transmission mark
indicated?
start to operate by
automatic restart
function?
YES
YES
NO
Does indoor unit
beep and operate?
YES
Does radio sound
is affected by
remote control when
a signal is transmitted
at distance of 5 cm
from radio?
NO
YES
Remote control
is defective.
P.C. board is
defective.
Avoid direct
sunlight.
Keep indoor unit
away from
Replace
batteries.
Normal
operation
Replace
remote control.
Replace
P.C. board.
thyristor
fluorescent light.
Note : After replacing batteries,
press the RESET button
with a tip of a pencil.
– 69 –
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FILE NO. SVM-07008
11-5-2. Wiring Failure (Interconnecting and serial signal wire)
(1) Outdoor unit does not operate.
1) Is the voltage between indoor terminal block 2 and 3 varied?
Confirm that transmission from indoor to outdoor is correctly performed based on the following 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 on indoor side
Red
3
2
1
S5277G or equivalent (G or J type)
(Diode with rated voltage of 400 V
or more is acceptable.)
S5277G
White
Tester
Terminal block
Normal time
: Voltage swings between DC15 V and 60 V.
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 shortage
Gas leak
Gas circulation amount is down.
Measure gas pressure.
Pipe clogging
Thermo operation of compressor
2) If the unit stops once, it dose not operate until the power will be turned on again.
To item of compressor 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 10-6.
Miswiring of connecting wires of indoor/outdoor units
Clogging of pipe and coming-off TC sensor
– 70 –
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FILE NO. SVM-07008
11-6. Check Code 1C (Miswiring in indoor/outdoor units) and 1E
<Check procedure>
1C
1E
Gas leakage,
Discharge temp. error,
gas leakage
(Check code 03, 1E)
disconnection of TS/TC
sensors (Check code 02, 1C)
Valve drive check
NO
NO
Is coil of the pulse modulation valve
(P.M.V.) correctly set?
Set it correctly.
Set it correctly.
YES
Is connector 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?
NOTE :
After all the operations stopped by the remote control, the power keeps
being supplied to outdoor unit for approx. 3 minutes. If operating the air
conditioner by remote control again just after all the operations stopped by the
remote control, positioning of the valve is not performed when outdoor unit
is activated because supplying power to the outdoor unit is not interrupted.
After positioning of the valve, activate the compressor and the outdoor fan.
It takes approx. 7 seconds for positioning of the valve, and sound ticktack
(hitting sound to stopper) is heard for approx. 0.5 seconds at least of that
period. As the sound is low, check sound by using screwdriver, etc.
NO
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 electronic control valve
include indoor heat exchanger sensor (TC), outdoor heat exchanger temp.
sensor (TE), and outdoor suction temp. sensor (TS).
NO
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 ( Pi sound is heard if keeping pushed for 10 seconds.).
The operation enters temporary operation mode which fixes opening degree of P.M.V. and No. of revolution of
compressor. Check condensation at outlet of P.M.V., 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=∅6.35mm valve side),
the valve is clogged.
Check the operating pressure from service port, and add gas if pressure is low.
– 71 –
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FILE NO. SVM-07008
11-7. How to Diagnose Trouble in Outdoor Unit
11-7-1. Summarized inner diagnosis of inverter assembly
Table 11-7-1
Diagnosis/Process flowchart
Item
Contents
Summary
Preparation
Turn “OFF” the power
breaker, and remove 3P
connector which connects
inverter and compressor.
• Check whether 25 A fuse
on the control board
assembly is blown or not.
(F01)
Remove
connector of
compressor.
Check
Check
If fuse was blown,
NG
be sure to check the
electrolytic capacitor
and diode block. (DB01)
• Connect discharge
resistance (approx.
Check 25 A fuse
(Part No.F01).
OK
Replace fuse.
100Ω40W) or soldering
iron (plug) between +, –
terminals of the electrolytic
capacitor (500µF)
of C14 (with printed
CAUTION HIGH VOLT-
AGE) on P.C. board.
Check
electrolytic
capacitor,
diode block
(DB01), etc.
Discharging position
(Discharging period
10 seconds or more)
Plug of
soldering
iron
Check
NG
terminal voltage
of electrolytic
capacitor.
Check
electrolytic
capacitor,
diode
OK
(DB01), etc.
Operation
Turn on power breaker, and
operate the air conditioner in
COOL mode by short-circuit
of the timer.
NO
Does outdoor
fan rotate?
YES
Measurement Measure terminal voltage of
electrolytic capacity.
YES
Does LED on control
board flash or go on?
OK if 500µF →
DC280 to 380 V
500µF: 400WV x 3
NO
Check
Stop
Remove CN300 by pushing
the part an arrow because
CN01 is a connector with
lock.
After operation, turn off the
power breaker after 2
minutes 20 seconds passed,
and discharge the electrolytic
capacity by soldering iron.
Check voltage between
motor phases.
Remove connector
CN300 of outdoor
fan motor, and using
a tester, check
resistance value
between every phase
at motor side
NG
Check
Measurement
• Is not winding
between 1-2, 2-3, or
1-3 opened or
OK
Replace
outdoor
fan motor.
short-circuited?
• Is not frame grounded with
1, 2 or 3?
→ Resistance between
phases should be approx.
55 to 77Ω.
A
B
C
→ Should be 10MΩ or
more.
– 72 –
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FILE NO. SVM-07008
Diagnosis/Process flowchart
Item
Contents
Summary
Check
Check winding resistance
between phases of
A
B
C
compressor, and resistance
between outdoor frames by
using a tester.
• Is not grounded.
• Is not short-circuited
between windings.
Check
NG
→ OK if 10MΩ or more →
winding of
compressor.
OK if 0.51Ω → 0.57Ω
(Check by a digital tester.)
}
OK
• Winding is not opened.
Check
fan motor
position
detect
Replace
com-
NG
Operation
Remove connector CN300 of
the outdoor fan motor, turn on
the power breaker, and
perform the operation. (Stops
though activation is
pressor.
signal.
OK
Replace
outdoor
fan
prompted.)
Check operation within 2
minutes 20 seconds after
activation stopped.
motor.
<Output check of fan motor a) One or two of three
Replace control
board assembly.
position detect signal>
While connecting connector
5P (CN301) for position
detection, using a tester,
measure voltage between
1-5. Between 5-4 : 5 V
voltages should be 5 V,
and others should be 0V.
(When all are 0V or 5 V,
it is not accepted.)
Check
compressor
winding
b) When rotating the fan
slowly with hands, the
voltage between pins
should move from 0V to 5 V.
(Check it with an analog
tester.)
NG
resistance.
OK
Replace
control board.
Replace
compressor.
(2) Inspection procedures
11-8. How to Check Simply the Main Parts
1) When a P.C. board is judged to be defective,
check for disconnection, burning, or discolora-
tion 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:
11-8-1. 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 connec-
tors on the P.C. board, hold the whole housing.
Do not pull at the lead wire.
DC power supply circuit (5 V, 12 V, 15 V),
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.
– 73 –
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FILE NO. SVM-07008
(3) Checking procedure.
Table 11-6-1
Causes
No.
Procedure
Check Point (Symptom)
1
Shut off the power supply and
remove the P.C. board assembly
from the electronic parts base.
Remove the connecting cable from
the terminal block.
1. Is the fuse blown?
1. Application of shock voltage.
Overload by short-circuit of the
parts.
2
Remove the connector for the motor, Voltage check
1. AC power cord is defective.
Poor contact of the terminal plate.
2. Capacitor (C121) is defective.
Line filter (L01) is defective.
Capacitor (C03) is defective.
Diode (D01,D02,D03, or D04)
is defective.
and turn the power on.
If the OPERATION lamp blinks
1.Between F01 and CN01(pin 1)
(AC 220 ~ 240 V)
(0.5 sec. : ON, 0.5 sec. : OFF) when 2.Between + and −of C03
the power turning on, the checking
points described as 1-4 of right
column are not necessary to
perform.
DC310~DC340V
3. Between 5V and GND
4. Between 12V and GND
3. T101 is defective.
3
4
Start the operation with the system
which the time of the restart delay
timer is shortened.
1. All indicators light for 3 sec..
2. Indicators do not indicate normally
after approximate 3 sec..
Defective indicator, or poor
housing assembly. (CN21)
}
Make the operation status by
pressing once the [ ] button.
1.The time of the restart delay timer
is shortened.
2.Cool operation
3.Air volume [AUTO]
1. Compressor does not operate.
2. OPERATION lamp blinks.
1.The temperature of the indoor
heat exchanger is abnormally
lower.
2.Poor contact of the heat
exchanger sensor. (The connector
is disconnected.) (CN62)
4.Make the setting temperature lower
enough than room temperature.
5. Continuous operation.
3.Heat exchanger sensor, main
P.C. board are defective. (Refer to
4.Main P.C. board is defective.
5
The status of No. 4 is continued, and 1. Compressor does not operate.
1. The temperature of the heat
exchanger is abnormally high.
2. The heat exchanger sensor
connector has short-circuit. (CN62)
3. The heat exchanger sensor is
defective.
make the following condition.
1.Heat operation
2. OPERATION lamp blinks.
2.Make the setting temperature
higher enough than room
temperature.
4. P.C. board is defective.
6
Turn the power on after connecting
the motor connector. Start the
operation with the following
condition.
1.Motor does not rotate. (The key
operation is accepted.)
2. The Motor rotates, but it vibrates
too much.
1. Poor contact of the motor
connector.
2. Fan motor is defective
1.Operation [Cooling]
2.Airflow [High fan]
3.Continuous operation
– 74 –
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FILE NO. SVM-07008
<Sensor characteristic table>
100
90
80
TD
70
60
50
40
30
20
TD : Discharge temp. sensor
TA : Room temp. sensor
TC : Heat exchanger temp. sensor
TO : Outdoor temp. sensor
TE : Outdoor heat exchanger temp.
sensor.
TA, TC, TO, TE
10
0
0
10
20
30
40 50
Temperature (˚C)
– 75 –
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FILE NO. SVM-07008
11-8-3. Indoor unit (Other parts)
No.
Part name
Checking procedure
1
Room temp. (TA) sensor
Heat exchanger (TC) sensor
Disconnect the connector and measure the resistance value with tester.
(Normal temp.)
Temperature
10°C
20°C
25°C
30°C
40°C
Sensor
TA, TC (kΩ)
20.7
12.6
10.0
7.9
4.5
2
3
Remote control
To item of How to judge whether remote control is good or bad of the Judgment
of trouble by symptom.
Louver motor
Measure the resistance value of each winding coil by using the tester.
24BYJ48
(Under normal temp. 25°C)
Position
Resistance value
1 to 2
1 to 3
1 to 4
1 to 5
380±40Ω
4
Indoor fan motor
Since judgment of DC motor is difficult on the single motor, refer to 10-5-1. (3)
11-8-4. Outdoor unit
No.
Part name
Checking procedure
1
Compressor
Measure the resistance value of each winding by using the tester.
(Model : DA89X1C-23FZ)
Red
Position
Red - White
White - Black
Black - Red
Resistance value
1.1Ω
White
Black
Under 20°C
Outdoor fan motor
Measure the resistance value of winding by using the tester.
2
(Model : SKF-240-20B-1)
Red
Position
Resistance value
260.1
235.2
C1.5 mF
450V
White - Black
N
Black - Red
White
Black
For details, refer to Section 10-9.
– 76 –
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FILE NO. SVM-07008
3
Outdoor temperature sensor
(TO), discharge temperature
sensor (TD), suction temperature
sensor (TS), outdoor heat
exchanger temperature sensor
(TE)
Disconnect the connector, and measure resistance value with the tester.
(Normal temperature)
Temperature
10°C
20°C
30°C
40°C
50°C
Sensor
TA, TC (k )
105
64
41
27
18
TGa : Heat pump model only.
TO, TS, TE : Refer to the TA, TC characteristic table in Indoor
(Refer to Table 10-8-3, No.1).
11-8-5. Checking Method for Each Part
No.
Part name
Checking procedure
1
Electrolytic capacitor
1. Turn OFF the power supply breaker.
(For raising pressure, 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 show in
continuity test by the tester.
Case that product is good
Pointer swings once, and
returns slowly. When
performing test once again
under another polarity, the
pointer should return.
MCC-5009
C12, C13, C14 → 500µF/400V
2
Converter module
1. Turn OFF the power supply breaker.
2. Discharge all three capacitors completely.
3 Check that the normal rectification characteristics are shown in continuity
test by the tester.
Mark
1
2
2
1
Diode check
Tester rod
Resistance value
in good product
e
d
~
\
1
2
d
~
\
50kΩ or more
(0Ω in trouble)
~
\
1
2
e
~
\
– 77 –
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FILE NO. SVM-7008
11-9. 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 ten seconds though it starts 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
or
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 and CN301)
of the outdoor fan motor from the inverter.
NO
Does the fan rotate without trouble
when rotating it with hands?
YES
CN300
If the resistance value between
1 (Red lead)
2 (White lead)
3 (Black lead)
− 2 (White lead)
− 3 (Black lead)
− 1 (Red lead)
NO
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.
– 78 –
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FILE NO. SVM-07008
12. PART REPLACEMENT
12-1. Indoor Unit
No.
Part name
Procedures
Remarks
1
Front panel
How to remove the front panel
2
1) Stop the operation of the air conditioner and
turn off its main power supply.
2
2
2) Pull the air inlet grille toward you to open it
and remove the air inlet grille.
Then remove the 2 screws fixing the front
panel.
2 2-Screws
3) First open the horizontal louver, and then
remove the front panel from the back body
by pulling it toward you.
3
How to mount the front panel
Push the front panel back in and make sure
all hooks are locked.
2
Electrical part
How to remove the electrical part.
1) Remove the front panel with procedure 1 .
2) Remove the screw holding the electrical part
cover.
2
Screws
3) Disconnect the 3 connectors 2-(3P) for the fan
motor and the connector (5P) for the louver
motor from the P.C. board assembly.
4) Pull out the TC sensor from the sensor
holder.
4 TC Sensor
5) Remove the screw for the ground connection,
remove the screw for the electrical part box.
Then remove the LED and the electrical part
box from the main unit.
How to mount the electrical part.
1) To put back the electrical part box, lock it to
the upper hook of the back body.
3
3-Connectors
2) Tighten the screws on the electrical part box.
3) Connect the 3 connectors and arrange the
wiring same as original condition and then
tighten the screw from the LED unit to the
back body.
5
Screws
4) Attach the TC sensor to the holder.
5) Tighten the screw for the ground connection.
6) Tighten the screw on the electrical part cover.
3
Horizontal
louver
1) Remove the front panel and the electrical
part following procedure 2.
2) Remove the center shaft of the horizontal
louver from the back body.
3) Remove the left shaft from the back body.
4) Remove the horizontal louver from the back
body.
3 Left shaft
2
Center shaft
− 79 −
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FILE NO. SVM-07008
No.
Part name
Procedures
Remarks
4
Heat exchanger 1) Remove the front panel, electrical part and
the horizontal louver following procedure 3.
2) Remove the pipe holder at the rear side of
main unit.
3) Remove the 2 screws on the heat exchanger
at the base bearing.
4) Remove the screw on the heat exchanger
at the fixed plate from the back body and then
pull out the right hand side until the socket of
heat exchanger released from the hook of the
band motor (L), and then pull out the upper
side of heat exchanger slowly.
2
Pipe holder
3
2-Screws
4 Screws
1) Remove the front panel, electrical part,
horizontal louver and the heat exchanger
following procedure 4.
5
Cross flow fan
2-Screws (R)
2
2) Remove the 2 screws on the band motor (L)
and remove the 2 screws on the band motor
(R) and then remove the cross flow fan.
3) Loosen the set screw of the cross flow fan
then separate the fan and the fan motor.
2 2-Screws (L)
4.7 mm
Notice
To assemble cross flow fan and fan motor to the
unit, please turn the fan motor unit the center of
its terminal meets the top position of band motor
(R).
Fix the cross flow fan with the set screw at the
position where the gap between the back body
and the right surface of the cross flow fan is
4.7 mm.
6 Set screw
Middle of the fan motor terminal
1) Remove the front panel, electrical part,
horizontal louver, heat exchanger and the
cross flow fan following procedure 5.
6
Base bearing
2) Remove the 2 screws fixing the base bearing.
3) Remove the bearing from the base bearing. If
the housing protrudes from the base bearing,
put the housing in position and attach the
bearing to the base bearing.
2
2-Screws
− 80 −
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FILE NO. SVM-07008
12-2. Microcomputer
No.
Part name
Procedures
Remarks
1
Common
procedure
1) Turn the power supply off to stop the operation
of air conditioner.
2) Remove the front panel.
Replace the thermal fuse, terminal
block, microcomputer ass’y and the
P.C. board ass’y
• Remove the 4 fixing screws.
3) Remove the electrical part base.
<P.C. board layout>
Component side
– 81 –
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FILE NO. SVM-07008
<P.C. board layout>
Solder side
– 82 –
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FILENO. SVM-07008
12-3-1. Outdoor Unit
No.
Part name
Common
Procedures
Remarks
Upper cabinet
1
1. Detachment
procedure
1) Stop operation of the air conditioner, and
turn off the main switch and breaker of the
air conditioner.
Wiring cover
Valve cover
2) Remove the valve cover. (ST1T∅4 x 10s
1 pc)
• After removing screw, remove the valve
cover pulling it downward.
3) Remove the wiring cover (ST1T∅4 x 10s 2
pcs.), and then remove the power cord,
connecting cable, and cord clamp
(ST2T∅4 x 16s 3 pcs.).
4) Remove the upper cabinet.
(ST1T∅4 x 10s 5 pcs.)
• After removing screws, remove the
upper cabinet pulling it upward.
Upper cabinet
2. Attachment
1) Attach the upper cabinet.
(ST1T∅4 x 10s 5 pcs.)
• Hook the rear side of the upper cabinet
to the claw of the rear cabinet, and then
place it on the front cabinet.
2) After connecting the power cord and
connecting cable, attach the cord clamp
and wiring cover.
• Insert the upper part into the upper
cabinet, and insert the claw which has
been hooked to the lower part into the
square hole, and then fix it with screw.
(ST1T∅4 x 10s 1 pc.)
3) Attach the valve cover. (ST1T∅4 x 10s 1 pc.)
• Insert the upper part to the upper
cabinet, set the hook claw of the valve
cover to square holes (at three
positions) of the main unit, and attach it
pushing upward.
2
Front cabinet
1. Detachment
1) Perform work of item 1 of 1.
2) Remove upper screw (ST1T∅4 x 10s 4 pcs.)
of the front cabinet, and lower screws
(ST1T∅4 x 10s 8 pcs.) of the front cabinet.
• Both side of front cabinet envelop the
unit, so remove it by pulling sideward.
2. Attachment
1) Assemble front cabinet to the unit.
2) Attach the removed screws to the original
positions.
– 83 –
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FILENO. SVM-07008
No.
Part name
Inverter
Procedures
Remarks
3
Inverter cover
1) Perform work of item 1 of 1.
assembly
2) Remove screw (ST1T∅4 x 10s 1 pc.) of
PC board
(Soldered surface)
the upper part of the front cabinet.
• If removing the inverter cover in this
condition, the P.C. board can be checked.
• If there is no space in the upper part of
the upper cabinet, perform work of 2.
Be careful when checking the
inverter because high-voltage
circuit is incorporated in it.
Discharging time
(Discharging period
10 seconds or more)
3) Perform discharging by connecting the
e,d polarities by discharging resistance
(approx. 100Ω40W) or plug of soldering
iron to e,d terminals of the C13 (printed
“CAUTION HIGH VOLTAGE” is attached.)
electrolytic capacitor (760 µF/400 WV) on
the P.C. board.
Plug of
soldering iron
Be careful to discharge the capacitor
because the electrolytic capacitor
cannot naturally discharge and
voltage remains depending on the
malfunction state in some cases.
NOTE :
This capacitor has mass capacity.
Therefore, it is dangerous that a
large spark generates if short-
circuiting between the e,d polarities
with screwdriver, etc. for discharging.
4) Perform the work of 2.
5) Remove the screw (ST1T∅4 x 10s 1 pc.)
fixing the main body and the inverter box.
6) Remove the lead wire from the holder on
the terminal block.
7) Disconnect the connectors of various lead
wires.
Terminal
block
Partition
Requirement :
As each connector has a lock
mechanism, avoid removing the
connector by holding the lead wire,
but by holding the connector.
The connector is one with lock,
so remove it while pushing the
part indicated by an arrow.
Be sure to remove the connector
by holding the connector, not by
pulling the lead wire.
– 84 –
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FILENO. SVM-07008
No.
Part name
Procedures
Remarks
4
Control board
assembly
CN602 CN601
1) Disconnect lead wires and connectors
connected from the control board
assembly to other parts.
CN300
CN701
CN500
1. Lead wires
• Connection with terminal block :
3 wires (Black, White, Orange)
• Connection with compressor : remove
the connector (3P)
• Connection with reactor : remove the
connector (2P)
2. Connectors (6 positions)
CN300, CN703 : Outdoor fan (3P: white)*
(See Note 1)
CN701 : 4 way valve (3P:Yellow)*
CN601 : TD sensor (2P: White)
CN602 : TO sensor (2P: White)
CN500 : Case thermo (2P: White)
∗ Note 1) As the connector has a
stopper, release the housing
lock when removing.
∗∗Note 2) Hold the housing (resin part)
with stopper and pull out to
remove.
As CN300 and CN701 are
connectors with lock, remove
while pushing the part indicated
by an arrow
2) Remove the control board assembly from
the inver ter box.
Note 2) Remove the claw of the
board support fixed to the
inverter board, and remove
upwards holding the heat
sink.
3) Remove the three screws fixing the heat
sink and control board assemble.
4) Attach the new contro board assembly.
Note 4) When attaching the new
control board assembly.
insert the P.C. board into
the guide rail groove
correctly.
– 85 –
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FILENO. SVM-07008
No.
Part name
Fan motor
Procedures
Remarks
1) Perform work of item 1 of 1 and 1 of 2.
2) Remove the flange nut fixing the fan motor
and the propeller fan.
ƒ
Fan motor
Propeller fan
• Flange nut is loosened by turning
clockwise.
(To tighten the flange nut, turn counter-
clockwise.)
Closed end
splice
3) Remove the propeller fan.
4) Disconnect the connector for the fan motor
from the inverter.
Flange nut
5) Remove the fixing screws (4 pcs.) holding
the fan motor by hand so that it does not
fall.
6) Cut the motor lead at the point which is
100 mm apart from the connector toward
the fan.
7) Use the connector used for the inverter,
and pinch the lead wires using the closed
end splice.
Compressor
1) Perform work of item 1 of 1, 1 of
2
„
.
and
ƒ
2) Extract refrigerant gas.
3) Remove the partition board.
(ST1T∅4 x 10s 3 pcs.)
4) Remove the sound-insulation material.
5) Remove the terminal cover of the
compressor, and disconnect the lead wire
of the compressor thermo and the
compressor from the terminal.
6) Remove the pipe connected to the
compressor with a burner.
Compressor
• Make sure the flame does not touch the
4 way valve.
7) Remove the fixing screw of the base plate
and heat exchanger.
(ST1T∅4 x 10s 2 pcs.)
8) Pull upward the refrigeration cycle.
9) Remove the nut fixing the compressor to
the base plate.
Reactor
Reactor
1) Perform work of item 1 of
and
1
, 1 of
2,
…
3
.
2) Remove the screw fixing the reactor.
(ST1T∅ 4 x 10 2 PCS.)
s
– 86 –
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FILENO. SVM-07008
No.
Part name
Fan guard
Procedures
Remarks
1. Detachment
†
1) Perform work of item 1 of 1 and 1 of 2.
Requirement:
Perform the work on a corrugated
cardboard, cloth, etc. to prevent
scratches to the product.
2) Remove the front cabinet, and place it
down so that the fan guard side faces
downwards.
3) Remove the hooking claws by pushing a
minus screwdriver according to the arrow
mark in the right figure, and remove the
fan guard.
Minus screwdriver
Hooking claw
2. Attachment
1) Insert the claws of the fan guard in the
hole of the front cabinet. Push the hooking
claws (8 positions) by your hand and fix
the claws.
Requirement:
This completes all the attaching
work. Check that all the hooking
claws are fixed to the specified
positions.
– 87 –
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FILENO. SVM-07008
No.
Part name
Procedures
Remarks
!
Replacement of
temperature
sensor for
Cutting here
100
1) Cut the sensor 100 mm longer than old
one.
2) Cut the protective tube after pulling out it
(200 mm).
Thermal
sensor part
Connector
servicing only
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
Common service
parts of sensor
TO, TS, TE, TD
4) Pass the stripped part through the ther-
mal constringent tube.
Thermal
5) Cut the old sensor 100 mm length on the
connector side, and recycle that connector.
6) Tear the lead wire in two on the connector
side and strip and covering part.
7) Twist the leads on the connector and
sensor sides, and solder them.
8) Move the thermal constringent tubes
toward the soldered parts and heat them
with the dryer and constring them.
9) Wind the attached color tape round the
both terminals of the protective tube when
colored protective tube is used.
10) Fix the sensor again.
constringent tube
Cutting here
100
Soldered part
NOTES:
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.
Dryer
Winding the color tape
These are parts
for servicing
sensors.
Please check
that the accesso-
ries shown in the
right table are
packed.
Part name
Q’ty
Remarks
1
2
3
4
5
6
Sensor
1
1
1
3
1
3
Length: 3 m
Sensor Spring (A)
Sensor Spring (B)
Thermal constringent tube
Color tape
For spare
For spare
Including one spare
9 colors
Terminal
– 88 –
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FILE NO. SVM 07008
13. EXPLODED VIEWS AND PARTS LIST
13-1. Indoor Unit (E-Parts Assy)
411
405
401
403
410
404
Location Part
Location Part
Description
Description
No.
No.
No.
No.
401
403
404
43T60365 TERMINAL BLOCK; 3P
43T69319 TEMPERATURE SENSOR
43T69320 TEMPERATURE SENSOR
405
410
411
43T69612 PC BOARD ASSY ;WRS-LED
43T62003 CORD CLAMP
43T69628 ASM-PCB-SERV
− 89 −
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FILE NO. SVM-07008
13-2. Indoor Unit
Location Part
Location Part
Description
Description
No.
No.
No.
No.
201
202
202
43T00478 FRONT PANEL ASSY
43T09402 GRILLE OF AIR INLET (ORIGINAL)
43T09404 GRILLE OF AIR INLET
(OPTIONAL;GRAY)
213
217
218
219
220
221
222
224
225
226
227
228
229
43T19333 FIX-PIPE-SENSOR
43T22312 ASM-BEAR-MOLD
43T39323 BEARING BASE
43T20323 ASSY CROSS FLOW FAN
43T39324 MOTOR BAND (LEFT)
43T39321 MOTOR BAND(RIGHT)
43T21393 FAN MOTOR
203
204
205
206
207
208
209
210
211
212
43T03357 BACK BODY ASSY
43T80317 AIR-FILTER
43T09392 HORIZONTAL LOUVER
43T70313 DRAIN-HOSE
43T82309 INSTALLATION PLATE
43T69615 WIRELESS-REMOCO
43T83003 HOLDER; REMOTE CONTROLLER
43T62326 TERMINAL COVER
43T60317 CORD MOTOR LOUVER
43T07311 PIPE HOLDER
43T79301 CAP-DRAIN
43T21363 MOTOR; STEPPING
43T44387 REFRIGERATION CYCLE ASSY
43T47353 PIPE; SUCTION (RAS-13)
43T47355 PIPE; SUCTION (U1U2_GD)
43T11319 PIPE SHIELD
− 90 −
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FILE NO. SVM-07008
13-3. Outdoor Unit
Location Part
Location Part
Description
Description
No.
No.
1
2
43T19335 FAN GUARD
43T20324 PROPELLER FAN
15
17
18
19
20
21
22
23
24
25
26
27
28
29
43T49327 CUSHION,RUBBER
43T50316 BIMETAL THERMO
43T41358 COMPRESSOR(Made in China)
43T19337 PACKED VALVE COVER
43T00481 UPPER CABINET
3
4
5
6
43T00482 FRONT CABINET
43T43403 CONDENSOR ASSEMBLY
43T62323 TERMINAL COVER
43T19336 FIN GUARD
43T00448 FIXING PLATE VALVE
43T42331 BASE PLATE ASSEMBLY
43T79305 DRAIN NIPPLE
7
8
9
10
11
12
13
14
43T47308 CAPILLARY TUBE; 1.0 DIA
43T46331 VALVE;PACKED 9.52 DIA
43T47332 BONNET, 9.52 DIA
43T46332 VALVE;PACKED 6.35 DIA
43T47331 BONNET, 6.35 DIA
43T21396 FAN-MOTOR (MADE IN CHINA)
43T47001 NUT FLANGE
43T46313 REACTOR
43T46333 4 WAY VALVE
43T46334 COIL-4WAY ASSEMBLY
43T04303 PARTITION
43T39325 MOTOR BASE
43T19312 HANDLE
43T39326 MOTOR BASE CONNECTION PLATE
− 91 −
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FILE NO. SVM-07008
13-4. Outdoor Unit (E-Parts Assy)
701
704
702
707
703
708
706
705
Location Part
Description
Location Part
Description
No.
No.
701
702
703
704
43T62320 HEATSINK
705
706
707
708
43T60377 TEMPERATURE SENSOR
43T50304 SENSOR;HEAT EXCHANGER
43T62313 BASE-PLATE-PC
43T69620 ASM-PCB-SERV
43T60352 TERMINAL BLOCK; 6P
43T60326 FUSE
43T55325 CAPACITOR; PLASTIC-FILM
− 92 −
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T O S H IB A C A R R IE R C O R P O R A T IO N
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