Mitsubishi Electronics Msz Fa25va User Manual

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

No. OB371

SERVICE MANUAL

Wireless type

Models

(WH)

MSZ-FA25VA -

MSZ-FA35VA -

(WH)

CONTENTS

1. TECHNICAL CHANGES ····································2

2. PART NAMES AND FUNCTIONS······················3

3. SPECIFICATION·················································5

4. NOISE CRITERIA CURVES·······························6

5. OUTLINES AND DIMENSIONS ·························7

6. WIRING DIAGRAM ············································8

7. REFRIGERANT SYSTEM DIAGRAM················8

8. SERVICE FUNCTIONS ······································9

9. TROUBLESHOOTING······································11

10. DISASSEMBLY INSTRUCTIONS·····················31

11. PARTS LIST······················································35

12. OPTIONAL PARTS···········································38

Indication of model name

MSZ-FA25VA -

MSZ-FA35VA -

NOTE:

This service manual describes technical data of the indoor units.

•As for outdoor units MUZ-FA25VA- , MUZ-FA35VA- , MUZ-FA25VAH-

and

MUZ-FA35VAH- , refer to service manual OB372.

•As for outdoor units MXZ-3A54VA- , MXZ-4A71VA-

and MXZ-4A80VA-

refer to service manual OB377.

PART NAMES AND FUNCTIONS

INDOOR UNIT

MSZ-FA25VA -

MSZ-FA35VA -

Air inlet

PLASMA AIR PURIFYING filter

Front panel

Panel

PLASMA DEODORIZING filter

Fan guard

Heat exchanger

Anti-mold air filter

Air outlet

Vertical vane

Horizontal vane

Remote controller

Line flow fan

Auto front panel

Display section

Operation section

When the unit starts operating, the

front panel opens automatically to

draw in air. When the unit stops

operating, the front panel closes

automatically.

(When the front panel is opened)

POWER lamp

PLASMA/WASH lamp

Auto front panel

AREA lamp

Emergency operation

switch

i-see Sensor

Remote control

receiving section

WASH reset switch

i-see control operation

AREA lamp indicate AREA setting

In AREA setting, the horizontal air flow

direction changes automatically according

to the detection of i-see Sensor which detects

the floor/ wall temperature to air-condition

the room evenly.

i-see sensor constantly measure

floor/wall temperature to automatically

adjust to the set temperature by

estimating the temperature

actually perceived by a

person inside the room

("sensible temperature").

MSZ-FA25VA -

MSZ-FA35VA -

MSZ-FA25VA -

MSZ-FA35VA -

ACCESSORIES

Installation plate

Installation plate fixing screw 4 o 25 mm

Remote controller holder

Fixing screw for 33.5 o 1.6 mm (Black)

Battery (AAA) for remote controller

Wireless remote controller

Felt tape (Used for left or left-rear piping)

REMOTE CONTROLLER

Signal transmitting section

Operation display section

OPERATE/STOP

(ON/OFF) button

Temperature buttons

Indication of

remote controller

model is on back

Open the front lid.

(This diagram shows an overall view.)

WIDE VANE button

(Vertical vane button)

FAN SPEED CONTROL button

OFF-TIMER button

ON-TIMER button

OPERATION SELECT button

ECONO COOL button

TIME SET buttons

FORWARD button

BACKWARD button

PLASMA button

AREA button

CLOCK SET button

i-see button

VANE CONTROL button

(Horizontal vane button)

RESET button

SPECIFICATION

Indoor model

Function

MSZ-FA25VA -

Cooling

MSZ-FA35VA -

Cooling

Heating

Single phase

230V,50Hz

Single phase

230V,50Hz

Power supply

Air flow(Super High)

594

K/h

594

612

Capacity

Air flow(High /Med. /Low )

Power outlet

474 /354 /258

474 /354 /252

498 /384 /276

498 /384 /264

0.25

Running current ✽1

Power input ✽1

Auxiliary heater

Power factor ✽1

Fan motor current ✽1

Model

A(kW)

—

0.25

Fan motor

RC0J40-EB

Dimensions WOHOD

Weight

780O298O198

Air direction

Sound level(Super High)

dB(A)

Sound level(High /Med. /Low ) dB(A)

36 /29 /21

36 /29 /22

Fan speed(Super High)

rpm

1,220

1,250

Fan speed(High /Med. /Low )

Fan speed regulator

1,010 /800 /630

1,010 /800 /610

1,050 /850 /660

1,050 /850 /640

Thermistor RT11(at25:)

Thermistor RT12(at25:)

Thermistor RT13(at25:)

Remote controller model

KM05A

When outdoor unit is MXZ type.

Indoor model

Function

MSZ-FA25VA -

MSZ-FA35VA -

Cooling

546

Heating

540

Heating

642

Air flow(Super High)

K/h

dB(A)

rpm

Capacity

516 /390 /258

450 /348 /252

420 /372 /264

522 /402 /276

Air flow(High /Med. /Low )

Sound level(Super High)

36 /29 /21

36 /29 /22

Sound level(High /Med. /Low )

1,130

1,120

1,300

Fan speed(Super High)

1,080 /860 /630

960 /790 /610

910 /830 /640

1,090 /880 /660

Fan speed(High /Med. /Low )

rpm

NOTE : Test conditions are based on ISO 5151

Cooling : Indoor Dry-bulb temperature 27:Wet-bulb temperature 19:

Outdoor Dry-bulb temperature 35:Wet-bulb temperature 24:

Heating : Indoor Dry-bulb temperature 20:Wet-bulb temperature 15:

Outdoor Dry-bulb temperature 7: Wet-bulb temperature 6:

Refrigerant piping length (one way): 5m

w Reference value

✽1 Measured under rated operating frequency.

Specifications and rating conditions of main electric parts

INDOOR UNIT

Model

MSZ-FA25VA

MSZ-FA35VA

Item

Fuse

(F11)

(MP)

T3.15AL250V

Front panel driving motor

i-see Sensor motor

Horizontal vane motor

Vertical vane motor

Varistor

NSEJ001DA1 12V DC 100"(at 25˚C)

MP20Z 12V DC 300"(at 25˚C)

MSBPC20M16 12V DC 250"(at 25˚C)

MSBPC20M11 12V DC 300"(at 25˚C)

ERZV14D471

(MT)

(MV1)

(MV2)

(NR11)

(RR)

i-see Sensor

A2TPMI334F0V50HSOBA060P5L1J4S 5V DC

Terminal block

(TB)

NOISE CRITERIA CURVES

MSZ-FA25VA -

MSZ-FA35VA -

FAN SPEED FUNCTION SPL(dB(A))

LINE

FAN SPEED FUNCTION SPL(dB(A))

LINE

COOLING

HEATING

COOLING

HEATING

Super High

Test conditions,

Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19:

Heating : Dry-bulb temperature 20: Wet-bulb temperature 15:

Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19:

Heating : Dry-bulb temperature 20: Wet-bulb temperature 15:

NC-70

NC-60

NC-50

NC-40

NC-30

NC-60

NC-50

NC-40

NC-30

APPROXIMATE

THRESHOLD OF

HEARING FOR

CONTINUOUS

NOISE

APPROXIMATE

THRESHOLD OF

HEARING FOR

CONTINUOUS

NOISE

NC-20

125

250

500

1000 2000 4000 8000

125

250

500

1000 2000 4000 8000

BAND CENTER FREQUENCIES, Hz

INDOORUNIT

WALL

0.8m

MICROPHONE

OUTLINES AND DIMENSIONS

Unit : mm

MSZ-FA25VA -

MSZ-FA35VA -

INDOOR UNIT

11o26 Oblong hole

11o20 Oblong hole

225 225

Installation plate

780

155

320

335

Air in

Wall hole [65

Indoor unit

198

Installation plate

Liquid line [6.35 - 0.5m

Gas line [9.52 - 0.43m

Insulation [35 O.D

[19 I.D

{

Drain hose [16

(Connected part O.D)

Insulation [28

53.5

624.5

102

106

Air out

Required space (Indoor unit)

Wireless remote controller

75 or more

WIRING DIAGRAM

MSZ-FA25VA -

MSZ-FA35VA -

MODELS WIRING DIAGRAM

INDOOR UNIT

INDOOR ELECTRONIC

CONTROL P.C. BOARD

RT13

RT12

TAB3

F11

BLK

230V~

112

DB111

T111

TO OUTDOOR

BLU

RED

UNIT

RT11

111

12-24V

NR11

CONNECTING

RED

CN201

BLK

WHT

YLW

BLU

LD104

151

1R1

101(A)

105(T)

110

1T1

1T2

1U1

CN211

INTERLOCK

SWITCH(FAN)

SW P.C.

PLASMA_A

PLASMA_D

BOARD

POWER MONITOR

RECEIVER P.C. BOARD

SAFETY DEVICE

(PLASMA UNIT)

MV1

MV2

NAME

DB111 DIODE STACK

SYMBOL

MV2

NR11

NAME

SYMBOL

RT12

RT13

T111

VANE MOTOR (VERTICAL)

VARISTOR

INDOOR COIL THERMISTOR (MAIN)

INDOOR COIL THERMISTOR (SUB)

TRANSFORMER

F11

FUSE (T3.15AL250V)

INDOOR FAN MOTOR

FRONT PANEL DRIVING MOTOR

i-see Sensor MOTOR

PLASMA_A PLASMA AIR PURIFYING FILTER UNIT

PLASMA_D PLASMA DEODORIZING FILTER UNIT

TERMINAL BLOCK

i-see Sensor

RT11

ROOM TEMPERATURE THERMISTOR

MV1

VANE MOTOR (HORIZONTAL)

NOTE:1. About the outdoor side electric wiring refer to the outdoor unit electric wiring diagram for servicing.

2. Use copper conductors only. (For field wiring)

3. Symbols below indicate.

/: Terminal block,

: Connector

REFRIGERANT SYSTEM DIAGRAM

Unit : mm

MSZ-FA25VA -

MSZ-FA35VA -

INDOOR UNIT

Refrigerant pipe [9.52

(with heat insulator)

Refrigerant pipe [9.52

(with heat insulator)

Indoor coil

thermistor

RT12(main)

Indoor coil

thermistor

RT12(main)

Indoor

heat

exchanger

Flared connection

Indoor coil

thermistor

RT13(sub)

thermistor

RT13(sub)

Room temperature

thermistor

Room temperature

thermistor

RT11

Flared connection

Refrigerant pipe [6.35

(with heat insulator)

Refrigerant pipe [6.35

(with heat insulator)

Refrigerant flow in cooling

Refrigerant flow in heating

SERVICE FUNCTIONS

MSZ-FA25VA -

MSZ-FA35VA -

8-1. TIMER SHORT MODE

For service, set time can be shortened by short circuit of JPG and JPS the electronic control P.C. board.

The time will be shortened as follows. (Refer to 9-7.)

Set time : 1-minute ➔ 1-second

Set time : 3-minute ➔ 3-second (It takes 3 minutes for the compressor to start operation. However, the starting time is

shortened by short circuit of JPG and JPS.)

8-2. P.C. BOARD MODIFICATION FOR INDIVIDUAL OPERATION

A maximum of 4 indoor units with wireless remote controllers can be used in a room.

In this case, to operate each indoor unit individually by each remote controller, P.C. boards of remote controller must be

modified according to the number of the indoor unit.

How to modify the remote controller P.C. board

Remove batteries before modification.

The board has a print as shown below :

Remote controller model : KM05A

NOTE : For remodelling, take out

the batteries and press the

OPERATE/STOP(ON/OFF)

button twice or 3 times at

first.

After finish remodelling,

put back the batteries then

press the RESET button.

The P.C. board has the print “J1” and “J2”. Solder “J1” and “J2” according to the number of indoor unit as shown in Table 1.

After modification, press the RESET button.

Table 1

4 units operation

Same as at left

1 unit operation

2 units operation

3 units operation

Same as at left

Solder J2

No. 1 unit

No. 2 unit

No. 3 unit

No. 4 unit

No modification

Same as at left

–

Solder J1

Same as at left

–

Solder both J1 and J2

–

How to set the remote controller exclusively for particular indoor unit.

After you turn the breaker ON, the first remote controller that sends the signal to the indoor unit will be regarded as the remote

controller for the indoor unit.

The indoor unit will only accepts the signal from the remote controller that has been assigned to the indoor unit once they are

set.

The setting will be cancelled if the breaker has turned off, or the power supply has shut down.

Please conduct the above setting once again after the power has restored.

8-3. AUTO RESTART FUNCTION

When the indoor unit is controlled with the remote controller, the operation mode, the set temperature, and the fan speed

are memorized by the indoor electronic control P.C. board. The “AUTO RESTART FUNCTION” sets to work the moment

power has restored after power failure. Then, the unit will restart automatically.

Operation

1 If the main power has been cut, the operation settings remain.

2 After the power is restored, the unit restarts automatically according to the memory.

(However, it takes at least 3 minutes for the compressor to start running.)

How to release “AUTO RESTART FUNCTION”

1Turn off the main power for the unit.

2Solder the Jumper wire to JR07 on the indoor electronic control P.C. board. (Refer to 9-7.)

JR07

NOTE:

• The operation settings are memorized when 10 seconds have passed after the indoor unit was operated with the remote

controller.

• If main power is turned OFF or a power failure occurs while AUTO START/STOP timer is active, the timer setting is

cancelled.

• If the unit has been off with the remote controller before power failure, the auto restart function does not works as the

power button of the remote controller is off.

• To prevent breaker off due to the rush of starting current, systematize other home appliance not to turn on at the same

time.

• When some air conditioners are connected to the same supply system, if they are operated before power failure, the

starting current of all the compressors may flow simultaneously at restart.

Therefore, the special counter-measures are required to prevent the main voltage-drop or the rush of the starting current

by adding to the system that allows the units to start one by one.

8-4. Remote controller

Be sure to set the slide switch inside the remote controller to an appropriate position in accordance with the

installed position of the indoor unit. If the switch is not set correctly, the air conditioner may not function properly.

Side swich

Area

Left

Center

Right

Position of

the slide

switch

Display on

the remote

controller

Where is the indoor unit installed in your room?

Installed at left , if the

distance is not more

than 50 cm.

Installed at right , if the

distance is not more

than 50 cm.

(Left)

(Center)

(Right)

Is the indoor unit in-

stalled at right, left or

center?

NOTE:If the indoor unit is installed more than 50 cm away from the side walls, cabinets or other nearby objects, set the slide

switch to the “center” position.

TROUBLESHOOTING

MSZ-FA25VA -

MSZ-FA35VA -

9-1. Cautions on troubleshooting

1. Before troubleshooting, check the following:

1) Check the power supply voltage.

2) Check the indoor/outdoor connecting wire for mis-wiring.

2. Take care the following during servicing.

1) Before servicing the air conditioner, be sure to turn off the unit first with the remote controller, and then after

confirming the horizontal vane is closed, turn off the breaker and / or disconnect the power plug.

2) Be sure to turn OFF the power supply before removing the front panel, the cabinet, the top panel, and the

electronic control P.C. board.

3) When removing the electronic control P.C. board, hold the edge of the board with care NOT to apply stress on the

components.

4) When connecting or disconnecting the connectors, hold the housing of the connector. DO NOT pull the lead wires.

Lead wiring

Housing point

3. Troubleshooting procedure

1) First, check if the OPERATION INDICATOR lamp on the indoor unit is flashing on and off to indicate an abnormality.

To make sure, check how many times the abnormality indication is flashing on and off before starting service work.

2) Before servicing check that the connector and terminal are connected properly.

3) If the electronic control P.C. board is supposed to be defective, check the copper foil pattern for disconnection and the

components for bursting and discoloration.

4) When troubleshooting, refer to 9-2., 9-3. and 9-4.

4. How to replace batteries

Weak batteries may cause the remote controller malfunction.

In this case, replace the batteries to operate the remote controller normally.

1 Remove the front lid and insert batteries.

2 Press RESET button with tip end of ball point pen

Then reattach the front lid.

or the like, and then use the remote controller.

Insert the negative pole of the

batteries first. Check if the polarity

of the batteries are correct.

RESET button

NOTE : 1. If RESET button is not pressed, the remote controller may not operate correctly.

2. This remote controller has a circuit to automatically reset the microcomputer when batteries are replaced.

This function is equipped to prevent the microcomputer from malfunctioning due to the voltage drop caused by

the battery replacement.

5. How to install the horizontal vane

If horizontal vane is not installed correctly, All of the operation indicator lamps will blink.

In this case, install the horizontal vane correctly by following the procedures 1 to 2.

NOTE: Before installation of the horizontal vane, turn OFF the power supply.

Stopper

In procedure 2 lock the

stoppers until they click

into place.

Left

Lock.

Insert this end first.

6. How to remove and install PLASMA DEODORIZING / AIR PURIFYING filter units

If PLASMA/WASH lamp on the indoor unit blinks, clean the filters as soon as possible. The lamp will start blinking when

accumulated operating time exceeds 330 hours.

Figure 1.

(1) Switch the indoor unit OFF with the remote controller and

disconnect the power supply plug and/ or turn OFF the

breaker.

NOTE: Otherwise, you may get injured since PLASMA

DEODORIZING/AIR PURIFYING filter units are

charged with high voltage.

(2) Hold the knobs on both sides of the front panel and lift the

panel up until its level.

(3) Remove the anti-mold air filter.(See Figure 1.)

(4) Remove PLASMA DEODORIZING/AIR PURIFYING filter

units. (See Figure 2.)

Figure 2.

Install PLASMA DEODORIZING/AIR PURIFYING filter units by following the removal procedure in reverse.

(1) Insert the top of PLASMA DEODORIZING/AIR PURIFYING filter

Figure 3.

units into the aperture in the plasma element holder.

(See Figure 3.)

(2) Push in PLASMA DEODORIZING/AIR PURIFYING filter units

until they click into place.

•The front panel does not close if PLASMA DEODORIZING/AIR

PURIFYING filter units are not installed properly.

(3) Install the anti-mold air filter.

(4) Connect the power supply plug and/ or turn ON the breaker.

Plasma

element

holder

(5) Press WASH reset switch. A short “beep” is heard and the blinks

of PLASMA/WASH lamp will be cancelled. Make sure PLASMA/

WASH lamp is not blinking at the start of operation next time.

(See Figure 4.)

(6) Hold both sides of the front panel and close the front panel.

(7) Press the 3 positions on the front panel as indicated by the

arrows.(See Figure 5.)

Figure 4.

E.O.

NOTE:

WASH

reset

Install PLASMA DEODORIZING/AIR PURIFYING filter units only

when they are completely dry. If the filter unit remains wet,

PLASMA/WASH lamp may blink and the plasma function may be

disabled.(When PLASMA DEODORIZING/AIR PURIFYING filter

units are cleaned.)

Figure 5.

INFORMATION FOR MULTI SYSTEM AIR CONDITIONER

OUTDOOR UNIT : MXZ series

Multi system air conditioner can connect two or more indoor units with one outdoor unit.

•Unit won’t operate in case the total capacity of indoor units exceeds the capacity of outdoor units. Do not

connect indoor units beyond the outdoor unit capacity.

Operation indicator lamp flashes as shown in the figure below.

•When you try to operate two or more indoor units with one outdoor unit simultaneously, one for the cooling and

the other for heating, the operation mode of the indoor unit that operates earlier is selected. The other indoor

units which start the operation later cannot operate, indicating as shown in the figure below. In this case,

please set all the indoor units to the same operation mode.

Lighted

Blinking

Not lighted

•When indoor units start the operation while the defrosting of outdoor unit is being done, it takes a few minutes

(max. 10 minutes) to blow out the warm air.

•In the heating operation, though indoor unit that does not operate may get warm or the sound of refrigerant

flowing may be heard, they are not malfunction. The reason is that the refrigerant continuously flows into it.

9-2. Failure mode recall function

Outline of the function

This air conditioner can memorize the abnormal condition which has occurred once.

Even though LED indication listed on the troubleshooting check table disappears, the memorized failure details can be

recalled.

This mode is very useful when the unit needs to be repaired for the abnormality which doesn't recur.

1. Flow chart of the indoor/outdoor unit failure mode recall function

Operational procedure

1While pressing both OPERATION SELECT

button and TOO COOL button on the

remote controller at the same time,

The cause of abnormality cannot be found because the abnormality doesn't recur.

Setting up the failure mode recall function

press RESET button.

Turn ON the power supply.

2First, release RESET button.

1While pressing both OPERATION SELECT

button and TOO COOL button on the remote controller at the same

time, press RESET button.

And release the other two buttons since all LCD

in operation display section of the remote controller

is displayed after 3 seconds.

2First, release RESET button.

And release the other two buttons since all LCD in operation display

section of the remote controller is displayed after 3 seconds.

W1. Regardless of normal or abnormal, a short

beep is emitted once as the signal is received.

Press OPERATE/STOP(ON/OFF) button of the remote controller (the set temperature

is displayed).

With the remote controller headed towards the indoor unit, press TOO COOL or TOO

WARM button to adjust the set temperature to 24:.

(OFF)

Does POWER lamp on the indoor

Indoor unit is normal.

unit blink at the interval of 0.5 seconds?

Blinks: Either indoor or outdoor unit is abnormal.

Beep sounds are emitted at the same timing

of the blinking of POWER lamp. W2

There is a possibility that the plasma or outdoor unit is abnormal.

Confirm the presence of abnormality according to the flow chart of the

the prasma unit or detailed outdoor unit failure mode recall function.

Yes

(Blinks)

Judgment of indoor/outdoor abnormality

Before blinking, does POWER

lamp stay ON for 3 seconds?

Yes

Stays ON for 3 seconds (without beep):

The outdoor unit is abnormal.

The indoor unit is abnormal.

The outdoor unit is abnormal.

Check the blinking pattern, and refer to confirm the

abnormal point(9-2.4.).

Check the blinking pattern, and refer to confirm the abnormal point.

Make sure to check at least two consecutive blinking cycles. W3

Make sure to check at least two consecutive blinking cycles. W2

Releasing the failure mode recall function

Release the failure mode recall function by the following procedures.

1With the remote controller headed towards the indoor unit, press any button

that is not used in this failure mode recall function (e.g. TIMER button) .

1Turn OFF the power supply and turn ON it again.

2Press RESET button of the remote controller.

•As for outdoor unit MUZ type, refer to service manual OB372.

As for outdoor unit MXZ type, refer to service manual OB377.

Repair the defective parts.

Deleting the abnormal condition

1After repairing the unit, recall the failure mode again according to

"Setting up the failure mode recall function" mentioned above.

2Press EMERGENCY OPERATION switch so that the memorized

abnormal condition is deleted.

3Release the failure mode recall function according to "Releasing the

failure mode recall function" mentioned above.

Note1.Make sure to release the failure mode recall function once it's set up, otherwise the unit cannot operate properly.

2.If the abnormal condition is not deleted from the memory, the last abnormal condition is kept memorized.

W2. Blinking pattern when the indoor unit is abnormal:

Blinking at 0.5-

second interval

Blinking at 0.5-

second interval

2.5-second OFF

OFF

Beeps

Repeated cycle

W3.Blinking pattern when the outdoor unit is abnormal:

Blinking at 0.5-

second interval

2.5-second OFF

3-second ON

second interval

2.5-second OFF

3-second ON

OFF

No beep

Beeps

No beep

Beeps

Repeated cycle

2. Flow chart of PLASMA DEODORIZING/PLASMA AIR PURIFYING power failure mode recall function

Operational procedure

There is a possibility that the plasma unit is abnormal.

Confirm the presence of abnormality according to the following procedures.

Confirm that the remote controller is in the failure mode recall

function.

W1. Regardless of normal or abnormal, a short

beep is emitted as the signal is received.

With the remote controller headed towards the indoor unit, press TOO COOL or TOO

WARM button to adjust the set temperature to 23:.

Confirmation of abnormality presence

Does POWER lamp on the indoor

unit blink at the interval of 0.5 seconds? W2

Blinks: The plasma unit is abnormal.

Beep sounds are emitted at the same timing

of the blinking of POWER lamp.

(OFF)

Yes

(Blinks)

The plasma unit is abnormal.

Check the blinking pattern, and refer to confirm the

abnormal point(9-2.5.).

The plasma unit is normal.

Make sure to check at least two consecutive blinking cycles. W2

Releasing the failure mode recall function

Release the failure mode recall function by the following procedures.

1With the remote controller headed towards the indoor unit, press any button

that is not used in this failure mode recall function (e.g. TIMER button) .

Release the failure mode recall function according to the left

mentioned procedure.

1Turn OFF the power supply and turn ON it again.

2Press RESET button of the remote controller.

Repair the defective parts.

Deleting the abnormal condition

1After repairing the unit, recall the failure mode again according to

"Setting up the failure mode recall function" mentioned above.

2Press EMERGENCY OPERATION switch so that the memorized

abnormal condition is deleted.

3Release the failure mode recall function according to "Releasing the

failure mode recall function" mentioned above.

Note1. Make sure to release the failure mode recall function once it's set up, otherwise the unit cannot operate properly.

2. If the abnormal condition is not deleted from the memory, the last abnormal condition is kept memorized.

W2.Blinking pattern when outdoor unit is abnormal:

Blinking at 0.5-

second interval

Blinking at 0.5-

second interval

2.5-second OFF

OFF

Beeps

Repeated cycle

3. PLASMA DEODORIZING/PLASMA AIR PURIFYING power operation check

PLASMA DEODORIZING/PLASMA AIR PURIFYING power goes ON when PLASMA button on the remote controller is pressed

once while the indoor error indication is being checked or after one short beep sound (signal reception beep) is emitted.

PLASMA button is pressed, the power of plasma is changed in sequence:

PLASMA DEODORIZING power goes ON

➔ PLASMA AIR PURIFYING power goes ON

➔ Cancel

Check the operation display section of the remote controller to confirm that PLASMA DEODORIZING power or PLASMA AIR

PURIFYING power is activated.

While PLASMA/WASH lamp stays OFF, and it means normal.

Flashing PLASMA/WASH lamp means abnormal, and the plasma power is not being conducted.

PLASMA/WASH lamp

Continuously flashes

Action

Follow "Check of PLASMA DEODORIZING power" or "Check of PLASMA AIR PURIFYING power"

to identify the error.(Refer to 9-6.For G.)

PLASMA DEODORIZING power or PLASMA AIR PURIFYING power control circuit on the indoor

electronic control P.C. board is out of order.(Refer to 9-6.For G.)

2-time flash

NOTE: Perform the above mentioned check with the front panel closed. Panel open is detected by the SAFETY DEVICE

(PLASMA UNIT).

4. Indoor unit failure mode table

NOTE: Blinking patterns of this mode differs from the ones of Troubleshooting check table(9-4.).

Abnormal point

(Failure mode)

POWER lamp

Not lighted

Detection method

–

Check point

–

Normal

When the room temperature thermistor short

or open circuit is detected every 8

seconds during operation.

Room temperature

thermistor

Refer to the characteristics of the room

temperature thermistor (9-7.).

1-time flash

every 0.5-second

When the indoor coil thermistor short or open Refer to the characteristic of the main

2-time flash

2.5-second OFF

circuit is detected every 8 seconds during

operation.

indoor coil thermistor, the sub indoor coil

thermistor (9-7.).

Indoor coil thermistor

Serial signal error

Indoor fan motor

3-time flash

2.5-second OFF

When the serial signal from outdoor unit is

not received for a maximum of 6 minutes.

Refer to 9-6.D"How to check miswiring

and serial signal error".

When the rotational frequency feedback

signal is not emit during 12-second the

indoor fan operation.

Refer to 9-6.A"Check of indoor fan

motor".

11-time flash

2.5-second OFF

When it cannot properly read data in the

nonvolatile memory of the indoor electronic

control P.C. board.

Replace the indoor electronic control

P.C. board.

12-time flash

2.5-second OFF

Indoor control system

5. PLASMA DEODORIZING/PLASMA AIR PURIFYING power failure mode table

Abnormal point

(Failure mode)

POWER lamp

1-time flash

Detection method

Check point

When PLASMA DEODORIZING/PLASMA

AIR PURIFYING power cannot be turned

OFF.

PLASMA DEODORIZING/

PLASMA AIR PURIFYING

power control

Replace the indoor electronic control P.C.

board.

When the voltage between CN1 1(+)

and 2(GND) on the PLASMA POWER P.C.

board (PLASMA DEODORIZING or PLASMA

AIR PURIFYING) falls below 1.6V(spark

discharge judgment voltage).

Refer to 9-6.F"Check of PLASMA

DEODORIZING power" or 9-6.G"Check

of PLASMA AIR PURIFYING power".

2-time flash

3-time flash

4-time flash

5-time flash

Spark discharge

When the voltage between CN1 1(+)

and 2(GND) on the PLASMA POWER P.C.

board (PLASMA DEODORIZING or PLASMA

AIR PURIFYING) falls 0.9V below the normal

range voltage.

Refer to 9-6.F"Check of PLASMA

DEODORIZING power" or 9-6.G"Check

of PLASMA AIR PURIFYING power".

Abnormal electric

discharge error 1

When the voltage between CN1 1(+)

and 2(GND) on the PLASMA POWER P.C.

board (PLASMA DEODORIZING or PLASMA

AIR PURIFYING) falls significantly.

(0.4V / 0.5ms)

Refer to 9-6.F"Check of PLASMA

DEODORIZING power" or 9-6.G"Check

of PLASMA AIR PURIFYING power".

Abnormal electric

discharge error 2

When the voltage between CN1 1(+)

and 2(GND) on the PLASMA POWER P.C.

board (PLASMA DEODORIZING or PLASMA

AIR PURIFYING) rises above the normal

voltage value (3V).

Refer to 9-6.F"Check of PLASMA

DEODORIZING power" or 9-6.G"Check

of PLASMA AIR PURIFYING power".

PLASMA DEODORIZING/

PLASMA AIR PURIFYING

power

w As soon as an error is detected, PLASMA DEODORIZING power or PLASMA AIR PURIFYING power goes OFF,

therefore measuring instrument which records the voltage wave is required in order to perform the above men-

tioned voltage measurement.

9-3. Instruction of troubleshooting

w"Test Run operation"

means the operation

within 30 minutes after

EMERGNCY OPERATION with failure mode recall function.

switch is pressed.

If blinking of OPERATION

INDICATOR lamp cannot

be checked, it can be checked

Start

OPERATION

Indoor unit

Indoor unit operates.

Outdoor unit doesn't

operate normally.

INDICATOR

operates.

Outdoor unit

doesn't

doesn't receive

the signal from

remote controller.

lamp on the

indoor unit is

flashing on

and off.

lamp on the

indoor unit

stays off.

operate.

PLASMA/WASH lamp

2-time flash

cause:

Indoor unit

doesn't operate,

when

EMERGENCY

OPERATION

switch is pressed.

Indoor unit

Outdoor unit

doesn't

operate

even in

Test Run

operation. w

Unit doesn't

operate

normal

operation in

COOL or

HEAT mode.

Outdoor unit

operates in

only Test Run

operation. w

operates, when

EMERGENCY

OPERATION

switch is pressed.

Indoor unit

• Trouble of PLASMA

DEODORIZNG power

control or PLASMA AIR

PURIFYING power

control

1. Check indoor / outdoor

connecting wire.

(Check if the power

is supplied to the

indoor unit.)

2. Refer to 9-6.C

"Check of indoor

electronic control

P.C. board and indoor

fan motor".

Replace the indoor

electronic control P.C.

board.

Refer to

"How to check

inverter/

Check room

temperature

thermistor.

Refer to 9-7.

"Test point

diagram and

voltage".

Refer to

"Check of

R.V. coil".

Refer to 9-6.B

"Check of

remote controller

and receiver

P.C. board".

compressor".

As for outdoor unit MUZ type,

refer to service manual OB372.

As for outdoor unit MXZ type,

refer to service manual OB377.

POWER lamp

2-time flash

Cause:

Indoor unit

• Trouble of

room temp-

erature/

indoor coil

thermistor

POWER lamp

Flash on and off

at 0.5-second

intervals

Cause:

Indoor/

Outdoor unit

• Mis-wiring

or trouble

POWER lamp POWER lamp

POWER lamp

3-time flash

Cause:

Indoor unit

• Trouble of

indoor fan

motor

Left lamp

POWER lamp POWER lamp

All lamps

7-time flash

Cause:

14-time flash

Cause:

of AREA lamp

4-time flash

Cause:

Indoor unit

• Trouble of

indoor unit

control

5-time flash

Cause:

6-time flash

Cause:

Flash on and off

at 0.5-second

intervals

Outdoor unit Outdoor unit

Outdoor unit

• Outdoor

power

system

abnormality

Outdoor unit

• Trouble of

thermistor

in outdoor

unit

Cause:

• Trouble of

outdoor

control

• Other

abnormality

Indoor unit

• The horizontal

vane is not

installed

system

correctly.

system

of serial signal

Refer to

"How to check

inverter/

Refer to 9-6.

A"Check of

indoor fan

motor".

Check

Replace the

indoor

electronic

control

Refer to

"Check of

outdoor

thermistors". the outdoor

electronic

Replace the

inverter P.C.

board or

Check room

temperature

thermistor

and indoor

coil thermis-

tor.

Refer to 9-7.

"Test point

diagram and

voltage".

Refer to 9-6. Refer to 9-6.

E "Check of D "How to

installation of check of

the horizontal mis-wiring

"Flow chart of

the detailed

outdoor unit

failure mode

recall function."

compressor".

P.C. board.

vane".

and serial

signal error

(when

control P.C.

board.

outdoor unit

doesn't work)".

9-4. Troubleshooting check table

· Flashing of POWER lamp indicates abnormalities.

Lighted

Blinking

Not lighted

NOTE : Before taking measures, make sure that the symptom reappears for accurate troubleshooting.

Self check table

Abnormal

point

No.

Operation indicator lamp

POWER lamp flashes.

Symptom

Detection method

Check point

0.5-second ON

• Refer to 9-6.D"How to check

mis-wiring and serial signal

error".

Mis-Wiring

or serial

signal

Outdoor unit

does not

operate.

When the serial signal form the outdoor unit is

not received for a maximum of 6 minutes.

0.5-second OFF

• Check the blinking pattern of

the LED on the inverter P.C.

board or the outdoor lectronic

control P.C. board.

When it cannot properly read data in the

nonvolatile memory of the inverter P.C. board

or the outdoor electronic control P.C. board.

Outdoor

control

system

Outdoor unit

does not

operate.

POWER lamp lights up

Indoor coil

thermistor

POWER lamp flashes.

2-time flash

Indoor unit

and outdoor

unit do not

operate.

• Refer to 9-7.the

When the indoor coil or the room temperature

thermistor is short or open circuit.

characteristics of indoor coil

thermistor, and the room

temperature thermistor.

Room

tempera-

ture

2.5-second OFF

thermistor

POWER lamp flashes.

3-time flash

Indoor unit

and outdoor

unit do not

operate.

When the rotational frequency feedback

signal is not emit during the indoor fan

operation.

• Refer to 9-7.A"Check of

indoor fan motor".

Indoor fan

motor

2.5-second OFF

POWER lamp flashes.

5-time flash

• Refer to "Check of inverter/

compressor".

Refer to service manual

OB372 or OB377.

Indoor unit

and outdoor

unit do not

operate.

When it consecutively occurs 3 times that the

compressor stops for overcurrent protection or

start-up failure protection witth in 1 minute

after start-up.

Outdoor

power

system

Check the stop valve.

2.5-second OFF

POWER lamp flashes.

6-time flash

Indoor unit

and outdoor

unit do not

operate.

• Refer to "Check of outdoor

thermistor".

Refer to service manual

OB372 or OB377.

When the outdoor thermistors short or open

circuit during the compressor operation.

Outdoor

thermistors

2.5-second OFF

POWER lamp flashes.

7-time flash

• Replace the inverter P.C.

board or the outdoor

electronic control P.C. board.

Refer to service manual

OB372 or OB377.

Indoor unit

and outdoor

unit do not

operate.

Outdoor

control

system

When it cannot properly read data in the

nonvolatile memory of the inverter P.C. board

or the outdoor electronic control P.C. board.

POWER lamp flashes.

14-time flash

Indoor unit

and outdoor

unit do not

operate.

• Confirm the abnormarity in

detail using the failure mode

recall function.

An abnormality other than above mentioned is

deteced.

Other

abnonmality

2.5-second OFF

NOTE : When the indoor unit has started operation and the above detection method has detected an abnormality (the first

detection after the power ON), the indoor electronic control P.C. board turns OFF the indoor fan motor with

OPERATION INDICATOR lamp flashing.

· Flashing of AREA lamp(left-hand side lamp) indicates abnormality.

Lighted

Blinking

Not lighted

NOTE : Before taking measures, make sure that the symptom reappears for accurate troubleshooting.

Self check table

Abnormal

point

No.

Operation indicator lamp

Symptom

Detection method

Check point

Left lamp of AREA lamp flashes.

4-time flash

Indoor unit

and outdoor

unit do not

operate.

Indoor

control

system

When it cannot properly read data in the

nonvolatile memory of the indoor electronic

control P.C. board.

• Replace the indoor electronic

control P.C. board.

2.5-second OFF

· Flashing of All lamps indicate abnormality.

Lighted

Blinking

Not lighted

Abnormal

point

No.

Operation indicator lamp

Symptom

Detection method

Check point

All lamps flash at the same time.

0.5-second ON

Attachment

of the

horizontal

vane

Indoor unit

and outdoor

unit do not

operate.

• Refer to 9-6.E"Check of

installation of the horizontal

vane".

When the electricity is not conducted to the

interlock switch (Fan) of the horizontal vane.

0.5-second OFF

· Flashing of AREA lamp(both lamps) indicates abnormality.

· POWER lamp is lighted.

Lighted

Blinking

Not lighted

Abnormal

point

No.

Operation indicator lamp

Symptom

Detection method

Check point

Both lamps flash

When the operation mode of the each indoor

unit is differently set to COOL(includes DRY)

and HEAT at the same time, the operation

mode of the indoor unit that has operated at

first has the priority.

Outdoor unit

operates but

indoor unit

does not

MXZ type

Operation

mode

• Unify the operation mode.

Refer to service manual

OB377.

2.5-second OFF

setting

operate.

· Flashing of PLASMA/WASH lamp indicates abnormality.

Lighted

Blinking

Not lighted

Abnormal

point

No.

Operation indicator lamp

Symptom

Detection method

Check point

PLASMA

DEODORIZING/

PLASMA

AIR

PURIFYING

power control

PLASMA/WASH lamp flashes.

2-time flash

Indoor unit

and outdoor

unit do not

operate.

When PLASMA DEODORIZING power or

PLASMA AIR PURIFYING power can not be

turned OFF.

• Replace the indoor electronic

control P.C. board.

2.5-second OFF

NOTE : When the indoor unit has started operation and the above detection method has detected an abnormality (the first

detection after the power ON), the indoor electronic control P.C. board turns OFF the indoor fan motor with

OPERATION INDICATOR lamp flashing.

9-5. Trouble criterion of main parts

MSZ-FA25VA -

MSZ-FA35VA -

Part name

Check method and criterion

Measure the resistance with a tester. (Part temperature 10˚C ~ 30˚C)

Figure

Room temperature

thermistor(RT11)

Normal

Abnormal

Indoor coil thermistor

(RT12(MAIN), RT13(SUB))

Open or short-circuit

8 k"~ 20 k"

Indoor fan motor(MF)

Check 9-6. A.

RED

Measure the resistance between the terminals with a tester.

ROTOR

(Part temperature 10°C ~ 30°C)

Horizontal vane

motor(MV1)

YLW

BRN

Abnormal

Color of the lead wire

BRN-other one

Normal

Open or short-circuit

235 "~ 255 "

GRN

ORN

RED

Measure the resistance between the terminals with a tester.

Vertical vane

motor(MV2)

i-see Sensor

motor(MT)

ROTOR

(Part temperature 10°C ~ 30°C)

YLW

BRN

Abnormal

Color of the lead wire

BRN-other one

Normal

Open or short-circuit

282 "~ 306 "

GRN

RED

Measure the resistance between the terminals with a tester.

ROTOR

Front panel

driving motor

(MP)

(Part temperature 10°C ~ 30°C)

YLW

BRN

Abnormal

Color of the lead wire

BRN-other one

Normal

Open or short-circuit

94 "~ 102 "

GRN

Turn the power ON(i-see Sensor is energized) with the aluminum block part

on the i-see Sensor P.C. board (upper part of i-see Sensor) covered with black

vinyl tape, then measure the voltage between connector terminals of i-see

Sensor using tester.

(Part temperature 10 ~ 40°C)

wThe aluminum block

part is covered with

black vinyl tape.

i-see Sensor

Aluminum block

i-see Sensor(RR)

Black

Connector i-see Sensor P.C. board

vinyl tape

i-see Sensor

connector terminals

Normal range

Abnormal

Below 1.874 or above 3.387V DC

Below 1.010 or above 1.420V DC

2(-)

1(+)

4(+)

2(-)

1.874 ~ 3.387V DC

1.010 ~ 1.420V DC

NOTE: Pay attention to static electricity.

PLASMA DEODORIZING/

PLASMA AIR PURIFYING

power

Check 9-6. For G.

9-6. Troubleshooting flow

When POWER lamp flashes 3-time.

Indoor fan does not operate.

Check of indoor fan motor

The indoor fan motor error has occurred, and the indoor fan doesn't operate.

Turn OFF the power supply.

Insert a stick such as a screw driver

into the air outlet, and check if there is

any catch in the rotation of the line

Pay careful attention to the high voltage on

the fan motor connector CN211.

flow fan.

Turn ON the power supply, wait 5 seconds or more, and then press

EMERGENCY OPERATION switch.

Measure the supply voltage as follows within 12 seconds

after EMERGENCY OPERATION switch is pressed.

If more than 12 seconds passes by, turn OFF the power supply and

turn ON it again, then measure the voltage.

Is there any foreign matter that

interferes the rotation of the

line flow fan?

1.Measure the voltage between CN211 1(+) and 3(-).

2.Measure the voltage between CN211 5(+) and 3(-).

Yes

wIf 12 seconds or more passes after EMERGENCY OPERATION switch

is pressed, the voltage mentioned above 2 goes 0V DC although the

indoor electric control P.C. board is normal.

Adjust the line flow fan and

remove the foreign matter.

Is there 311V DC between

CN211 1(+) and 3(-), and does

the voltage between CN211 5(+)

and 3(-) rise to the range of 3 to 6V

DC within 12 seconds after

EMERGENCY OPERATION switch

is pressed?

CN211

Indoor electronic

control P.C. board

Yes

Replace the indoor fan motor.

Replace the indoor electronic control P.C. board.

The indoor fan motor error has occurred, and the indoor fan repeats "12-second ON and 30-second OFF" 3 times, and then stops.

Measure the voltage between CN211

6(+) and 3(-) while the fan

motor is rotating.

Changed

Is it unchanged holding

0V DC or 15V DC?

Replace the indoor electronic control P.C. board.

Unchanged

Replace the indoor fan motor.

Indoor unit operates by pressing EMERGENCY OPERATION switch, but does not operate with the remote controller.

B Check of remote controller and receiver P.C. board

wCheck if the remote controller is exclusive for this air conditioner.

Switch on the remote controller.

Is LCD display on the the remote

Replace the batteries. (Refer to 9-1.4.)

controller visible?

(not clear)

Yes

Remove the batteries, then set them back

and press RESET button. (Refer to 9-1.4.)

Check if the unit operates with the remote

controller.

Turn on a radio to AM and press switch on

the remote controller.

Does the unit operate with the

remote controller?

Yes

Replace the remote controller.

Is noise heard from radio?

Yes

Are there any fluorescent lights of

inverter or rapid-start type within

the range of 1m?

Yes

●Reinstall the unit away from lights.

●Attach a filter on receiving part.

Replace the indoor electronic

control P.C. board.

The unit does not operate with the remote controller.

Also, POWER lamp does not light up by pressing EMERGENCY OPERATION switch.

C Check of indoor electronic control P.C. board and indoor fan motor

Short circuit:

Turn OFF the power supply.

Measure the resistance of the front panel

driving motor coil.

Normal value is approx. 100'

Replace the front panel driving motor

and the indoor electronic control P.C.

board.

Remove indoor fan motor connector CN211, vane motor

connector CN151 front panel driving motor connector

connector CN1U1 and i-see Sensor motor connector

CN110 from the indoor electronic

control P.C. board and turn ON the power supply.

Short circuit:

Replace i-see Sensor motor and the

indoor electronic control P.C. board.

Measure the resistance of i-see Sensor

motor coil.

Normal value is approx. 300'

Yes

Does the unit operate with the remote controller?

Does POWER lamp light up by pressing EMERGENCY

OPERATION switch?

Measure the resistance between CN211 3

and 4of the indoor fan motor connector.

Normal value is approx. 30k'to 50k'.

Short circuit:

Replace the indoor fan motor.

Short circuit:

Measure the resistance of the horizontal vane

motor coil and the vertical vane motor coil.

Normal value is approx. 300'or 250'.

Replace the horizontal vane motor, the

vertical vane motor and the indoor

electronic control P.C. board.

Replace the varistor(NR11) and fuse(F11).

Yes

Are the varistor(NR11) burnt

and the fuse(F11) blown?

Turn OFF the power supply.

Check both “parts side” and “pattern

side” of the indoor electronic control P.C.

board visually.

Be sure to check both the fuse

and the varistor in any case.

Is the fuse(F11) blown only?

w1,2

Yes

Measure the resistance between

1(+) and 3(-) of the indoor fan

w1. The fan motor connector's 1lead wire is red, whereas 3is black.

motor connector (to CN211 on the

indoor electronic control P.C. board) .

w2. Connect "+" of the tester to fan motor connector's 1lead

wire, and "-" to 3lead wire, otherwise the resistance cannot be

measured properly.

w3. Short circuit:

Is the resistance 1M'

or more?

Replace the fuse (F11) and the indoor fan motor.

The indoor fan motor is

abnormal.

Yes

Replace the fuse (F11).

Is the resistance

approx. 4'?

Measure the cement resistance R111 on

the indoor electronic control P.C. board.

Replace the indoor electronic control P.C. board

and the indoor fan motor.

Yes

Indoor electronic

control P.C.Board

Replace the indoor electronic control P.C. board.

CN211

Varistor(NR11)

CN201

Fuse(F11)

When POWER lamp flashes ON and OFF in every 0.5-second.

Outdoor unit does not operate.

How to check mis-wiring and serial signal error

Turn OFF the power supply.

Is there rated voltage of

230V AC in the power

supply?

Check the power

supply.

Yes

Turn ON the power supply.

Is there 230V AC between

outdoor terminal block S1 and

S2?

Check the wiring.

Yes

Press EMERGENCY OPERATION switch.

Does POWER lamp light up?

Yes

Is there any mis-wiring,

poor contact, or wire

disconnection of the

indoor/outdoor

Yes

Is the self-check of the indoor unit displayed 6

minutes after?

Make them sure.

connecting wire?

Yes

Serial signal error display

POWER lamp

blinks quickly.

Turn OFF the power supply.

Check once more if the indoor/outdoor

connecting wire is not mis-wiring.

Short-circuit outdoor terminal block S2 and

W1. Mis-wiring may damage indoor electronic control

P.C. board during the operation.

S3.

Be sure to confirm the wiring is correct before the

operation starts.

Turn ON the power supply of the outdoor unit.

In 3 minutes after turning ON the

power supply of the outdoor unit, does

the LED on the inverter P.C. board

repeat quick blinking "3.6-second-OFF

and 0.8-second-ON"?

Be sure to check above in 3 minutes

after turning ON. After 3 minutes, LED

blinks 6 times. When the inverter P.C.

board is normal, LED also blinks 6

times after 3 minutes.

Inverter P.C.board

(Parts side)

Replace the inverter

P.C. board.

(Lighting)

W2 Be careful to the residual

LED

voltage of smoothing capacitor.

Blinking

Yes

Remove the short-circuit between

outdoor terminal block S2 and S3.

Is there amplitude of 10 to 20V DC

between outdoor terminal block S2

and S3? <Confirmation of serial

signal>

Is there any error of the

· Turn OFF inverter-controlled lighting

equipment.

· Turn OFF the power supply and then

turn ON again.

· Press EMERGENCY OPERATION

switch.

Replace the

indoor/outdoor

connecting.

indoor/outdoor connecting wire,

such as the damage of the wire,

intermediate connection, poor

contact to the terminal block?

Yes

· Reinstall

either the

unit or the

light each

other away.

· Attach a filter

on receiving

section of

the indoor

unit.

Is there any error of the

Is there 230V AC between outdoor

terminal block S1 and S2?

indoor/outdoor connecting wire,

such as the damage of the wire,

intermediate connection, poor

contact to the terminal block?

Replace the

indoor/outdoor

connecting.

Is serial signal

error indicated

6 minutes later?

Yes

Replace the indoor electronic control P.C. board.

Be sure to release the failure-mode

recall function after checking.

Yes

As for outdoor unit MUZ type,refer to service manual OB372.

As for outdoor unit MXZ type,refer to service manual OB377.

When All lamps flash ON and OFF every 0.5-second.

Indoor unit and outdoor unit do not operate.

Check of installation of the horizontal vane

Start

Turn OFF the

power supply.

Relock the stopper of the

horizontal vane to the indoor unit.

Refer to 9-1.5.

Is the stopper of the horizontal vane

locked to the indoor unit correctly?

Yes

Turn ON the

power supply.

Are all lamp flashing?

Yes

To check the continuity of the interlock switch

Turn OFF the

power supply.

(Fan), measure the resistance of connector 1- 2

connected to CN1R1 on the indoor

electronic control P.C. board.

No(∞)

Replace the

interlock switch(Fan).

Is there resistance 0 "?

Yes

Replace the

indoor electronic

control P.C. board.

When PLASMA/WASH lamp flashes 2-time.

wThe power failure mode for PLASMA DEODORIZING power is memorized when the failure mode is called.

Check of PLASMA DEODORIZING power

After performing the check, make sure to release the failure mode recall function.

High voltage (approx. -3.9kV) is generated during PLASMA

DEODORIZING power operation.

Turn ON the power supply.

Pay careful attention and never touch PLASMA/WASH unit

and the high-voltage lead part (red wire).

While the operation is being

stopped, does

PLASMA/WASH lamp flash

twice?

Yes

Replace the indoor electronic control P.C. board is out of order.

1During pressing both OPERATION SELECT

button and TOO COOL button on the remote

controller at the same time, press RESET button.

2First, release RESET button.

And release the other two buttons since

all LCD in operation display section of the

remote controller is displayed after 3 seconds.

(Failure mode recall function is set.)

3Press OPERATE/STOP (ON/OFF) button.

4After a short beep sound is emitted, press

once PLASMA button.

Make sure that the front panel is firmly closed.

1During pressing both OPERATION SELECT button and

TOO COOL button on the remote controller at the same time,

press RESET button.

2First, release RESET button.

And release the other two buttons since

all LCD in operation display section of the

remote controller is displayed after 3 seconds.

(Failure mode recall function is set.)

3Press OPERATE/STOP (ON/OFF) button.

4After a short beep sound is emitted, press

once PLASMA button.

PLASMA DEODORIZING operation is

selected.

wThe plasma power operation check mode is set.(Refer to 9-2.5.)

PLASMA DEODORIZING operation is

selected.

PLASMA

DEODORIZING

operation

PLASMA DEODORIZING power supply is normal.

The front panel is not firmly closed, therefore the

protection by the interlock switch is active.

Stays OFF

Does PLASMA/WASH lamp stay OFF, or

continuously flash?

w1 Turn PLASMA DEODORIZING power OFF and ON again.

(For turning off PLASMA DEODORIZING power, refer to 9-2.3.)

(If it goes normal without turning OFF and ON, PLASMA/WASH lamp

doesn't go OFF.

Continuously flashes.

If the plasma unit is dirty, clean the unit.

After cleaning, make sure to attach the unit when it is

completely dry.

If the air conditioner goes ON with the plasma unit

being wet, protection gets active and PLASMA/WASH

lamp continuously flashes.

Remove the plasma unit, firmly close the

front panel, and then perform PLASMA

DEODORIZING power operation check (w1).

Does PLASMA/WASH lamp stay OFF, or

continuously flash?

Stays OFF

Continuously flashes.

Turn OFF the power supply, and check the

SAFETY DEVICE(PLASMA UNIT).

Is it firmly fixed?

Firmly fix the SAFETY DEVICE.

Yes

Turn ON and OFF the SAFETY DEVICE

(PLASMA UNIT) using something like a screw

driver, and measure the resistance value between

CN1T2 1and 3 on the indoor electronic control

P.C. board. Does the switch work?

Replace the SAFETY DEVICE(PLASMA UNIT).

Yes

Keep the SAFETY DEVICE(PLASMA UNIT)

ON using something like a screw driver.

Turn ON the power supply.

9.5V DC is generated.

While the operation is being stopped, is the

voltage between CN1 1(+) and 2(GND)

on the PLASMA POWER P.C. board

(PLASMA DEODORIZING) 0V?

Replace the indoor electronic control P.C. board.

Yes

Set the plasma power failure mode recall function.

When PLASMA button is pressed, is

there voltage of 12.5V DC between CN1

1(+) and 2(GND)?

Replace the indoor electronic control P.C. board.

Check the wiring of CN1T1 on the indoor electronic control

P.C. board.

Yes

Replace the PLASMA POWER P.C. board

(PLASMA DEODORIZING).

When PLASMA/WASH lamp flashes 2-time.

wThe power failure mode for PLASMA AIR PURIFYING power is memorized when the failure mode is called.

Check of PLASMA AIR PURIFYING power

After performing the check, make sure to release the failure mode recall function.

High voltage (approx. -3.9kV) is generated during

Turn ON the power supply.

PLASMA AIR PURIFYING power operation.

Pay careful attention and never touch PLASMA/WASH unit

and the high-voltage lead part (red wire).

While the operation is being

stopped, does

PLASMA/WASH lamp flash

twice?

Yes

Replace the indoor electronic control P.C. board is out of order.

1During pressing both OPERATION SELECT

button and TOO COOL button on the remote

controller at the same time, press RESET button.

2First, release RESET button.

Make sure that the front panel is firmly closed.

1During pressing both OPERATION SELECT button and

TOO COOL button on the remote controller at the same time,

press RESET button.

And release the other two buttons since

all LCD in operation display section of the

remote controller is displayed after 3 seconds.

(Failure mode recall function is set.)

3Press OPERATE/STOP (ON/OFF) button.

4After a short beep sound is emitted, press

twice PLASMA button.

2First, release RESET button.

And release the other two buttons since

all LCD in operation display section of the

remote controller is displayed after 3 seconds.

(Failure mode recall function is set.)

3Press OPERATE/STOP (ON/OFF) button.

4After a short beep sound is emitted, press

twice PLASMA button.

PLASMA AIR PURIFYING operation is

selected.

wThe plasma power operation check mode is set.(Refer to 9-2.5.)

PLASMA AIR PURIFYING operation is

selected.

PLASMA AIR

PURIFYING

operation

PLASMA AIR PURIFYING power supply is normal.

The front panel is not firmly closed, therefore the

protection by the interlock switch is active.

Stays OFF

Does PLASMA/WASH lamp stay OFF, or

continuously flash?

w1 Turn PLASMA AIR PURIFYING power OFF and ON again.

(For turning off PLASMA AIR PURIFYING power, refer to 9-2.3.)

(If it goes normal without turning OFF and ON, PLASMA/WASH lamp

doesn't go OFF.

Continuously flashes.

If the plasma unit is dirty, clean the unit.

After cleaning, make sure to attach the unit when it is

completely dry.

If the air conditioner goes ON with the plasma unit

being wet, protection gets active and PLASMA/WASH

lamp continuously flashes.

Remove the plasma unit, firmly close the

front panel, and then perform PLASMA AIR

PURIFYING power operation check (w1).

Does PLASMA/WASH lamp stay OFF, or

continuously flash?

Stays OFF

Continuously flashes.

Turn OFF the power supply, and check the

SAFETY DEVICE(PLASMA UNIT).

Is it firmly fixed?

Firmly fix the SAFETY DEVICE.

Yes

Turn ON and OFF the SAFETY DEVICE

(PLASMA UNIT) using something like a screw

driver, and measure the resistance value between

CN1T2 1and 3 on the indoor electronic control

P.C. board. Does the switch work?

Replace the SAFETY DEVICE(PLASMA UNIT).

Yes

Keep the SAFETY DEVICE(PLASMA UNIT)

ON using something like a screw driver.

Turn ON the power supply.

While the operation is being stopped, is the

voltage between CN1 1(+) and 2(GND) on

the PLASMA POWER P.C. board (PLASMA

AIR PURIFYING) 0V?

9.5V DC is generated.

Replace the indoor electronic control P.C. board.

Yes

Set the plasma power failure mode recall function.

When PLASMA button is pressed, is

there voltage of 12.5V DC between CN1

1(+) and 2(GND)?

Replace the indoor electronic control P.C. board.

Check the wiring of CN1T1 on the indoor electronic control

P.C. board.

Yes

Replace the PLASMA POWER P.C. board

(PLASMA AIR PURIFYING).

Indoor unit and outdoor unit do not operate.

Check of auto front panel

Turn the remote controller ON.

Does the front panel automatically

open? (Does it start to move?)

Yes

Is the connector of the front panel

driving motor unit or the indoor

electric control P.C. board unplugged?

Yes

Is the resistance value between

terminals of the front panel driving

motor unit normal?

Plug in the connector and

check from the start again.

Yes

Replace the front panel

driving motor unit.

Replace the indoor electric

control P.C. board.

Is the front panel held 10mm or

more upper than the level line of

the nozzle top?

Yes

Replace the front panel

driving motor unit.

Front panel is normal.

10 mm or

Z-Z side view

Electromagnetic noise enters into TV sets or radios

Is the unit earthed?

Earth the unit.

Yes

Is the distance between the

antennas and the indoor

unit within 3m, or is the

distance between the

antennas and the outdoor

unit within 3m?

Extend the distance between

the antennas and the indoor

unit, or the antennas and the

outdoor unit.

Yes

Is the distance between the

TV sets or radios and the

Extend the distance between

the TV sets or radios and the

indoor unit, or the TV sets or

radios and the outdoor unit.

Yes

indoor unit within 1m, or is

the distance between the TV

sets or radios and the

outdoor unit within 3m?

Is there any antennas damage

by rust or something , coaxial

cable damage, or poor

Yes

Replace the antennas.

Replace the coaxial cable.

contact such as loosing of

the connectors or wire

disconnection of wiring of the

antennas?

Yes

Is the indoor/outdoor

Extend the distance between

the indoor/outdoor connecting

wire of the air conditioner and

the wiring of the antennas.

connecting wire of the air

conditioner and the wiring of

the antennas in close?

Even if all of the above conditions is fulfilled, the electromagnetic noise may enter, depending on

the electric field strength or the installation condition (combination of specific conditions such as

antennas or wiring).

Check the followings before asking for service.

1.Devices affected by the electromagnetic noise

TV sets, radios (FM/AM broadcast, shortwave)

2.Channel, frequency, broadcast station affected by the electromagnetic noise

3.Channel, frequency, broadcast station unaffected by the electromagnetic noise

4.Layout of ;

indoor/outdoor unit of the air conditioner, indoor/outdoor wiring, grounding wire, antennas, wiring

from antennas, receiver

5.Electric field intensity of the broadcast station affected by the electromagnetic noise

6.Presence or absence of amplifier such as booster

7.Operation condition of air conditioner when the electromagnetic noise enters in.

1)Turn OFF the power supply once, and then turn ON the power supply. In this situation check for

the electromagnetic noise.

2)Within 3 minutes after turning ON the power supply, press OPERATE/STOP (ON/OFF) button

on the remote controller for power-on, and check for the electromagnetic noise.

3)After a short time (3 minutes later after turning ON), the outdoor unit starts running. During

operation, check for the electromagnetic noise.

4)Press OPERATE/STOP (ON/OFF) button on the remote controller for power off, when the

outdoor unit stops but the indoor/outdoor communication still runs on. In this situation check for

the electromagnetic noise.

After checking the above, consult the service representative.

9-7. Test point diagram and voltage

MSZ-FA25VA -

MSZ-FA35VA -

Indoor electronic control P.C. board

Cement resistance

(R111)

5V DC

12V DC

Indoor fan motor

(CN211)

1311V DC

3(-) Fiducial terminal of

cathode side on measur-

ing high-voltage DC

415V DC

5(+)3-6V DC

6(+)0V DC or 15V DC

Interlock switch(Fan)

(CN1R1)

Room temperature

thermistor (CN111)

Power supply input

230V AC

{

SW P.C. Board

Varistor

(NR11)

WASH reset

switch(SW2)

CN2011

(Used for check of con-

ducting of thermal fuse)

Indoor coil thermistor

RT12(MAIN)12

RT13(SUB)34

(CN112)

Emergency

operation

switch(SW1)

Plasma deodorizing/air

purifying filter units

(CN1T1)

Safety device(Plasma unit)

(CN1T2)

Horizontal and

Vertical vane

motor(CN151)

Timer short mode

point JPG, JPS

(Refer to 8-1.)

}

Power monitor

receiver P.C.

board.

Front panel

driving motor

(CN1U1)

i-see Sensor

(CN110)

Fuse

(F11)

Release of Auto restart

function

Solder the Jumper wire

to JR07.

(Refer to 8-3.)

Indoor coil thermistor [RT12 (MAIN), RT13 (SUB)]

Room temperature thermistor (RT11)

Plasma power P.C. board

1DC 2.5V during PLASMA

AIR PURIFYING/PLASMA

DEODORIZING operation

CN1

High-voltage lead wire

(Red)

2GND

3DC 12.5V during PLASMA

AIR PURIFYING/PLASMA

DEODORIZING operation

Standard lead wire

(Green)

Temperature (:)

DISASSEMBLY INSTRUCTIONS

<"Terminal with locking mechanism" Detaching points>

The terminal which has the locking mechanism can be detached as shown below.

There are two types ( Refer to (1) and (2)) of the terminal with locking mechanism.

The terminal without locking mechanism can be detached by pulling it out.

Check the shape of the terminal before detaching.

(1) Slide the sleeve and check if there is a locking lever or not.

(2) The terminal with this connector has the

locking mechanism.

Sleeve

1Slide the sleeve.

1Hold the sleeve, and

2Pull the terminal while

pushing the locking

pull out the terminal

slowly.

Locking lever

lever.

Connector

MSZ-FA25VA -

INDOOR UNIT

MSZ-FA35VA -

OPERATING PROCEDURE

PHOTOS

1. Removing the panel

Photo 1

(1) Press and unlock the knobs on both sides of the front

panel and lift the front panel until it is level, and then pull

the hinges forward to remove the front panel.

(2) Remove the horizontal vane.

Front panel

(3) Remove the screw caps of the panel.

Remove the screws. (See Photo 1.)

(4) Remove the screw of the front panel driving motor.

(See Photo 2.)

(5) Hold the lower part of both ends on the panel and pull it

slightly toward you, and then remove the panel by pushing

it upward.

Screws of the panel

Horizontal vane

Photo 2

Screw of the front panel

driving motor

OPERATING PROCEDURE

PHOTOS

2. Removing the electronic control P.C. board, the

power monitor receiver P.C. board, i-see Sensor,

SW P.C. board and the terminal block

(1) Remove the horizontal vane, the panel (Refer to 1.) and

the corner box.

Photo 3

(2) Remove the screw of the V.A. clamp, and then the

indoor/outdoor connecting wire.(See Photo 3.)

(3) Remove the switch holder from the electrical cover.

(See Photo 4.)

Screws of

(4) Remove the screw of the electrical cover, and then the

electrical cover. (See Photo 4.)

the terminal

block cover

(5) Remove the ground wire connected to the indoor electronic

control P.C. board from the electrical box. (See Photo 5.)

(6) Unhook the power monitor receiver P.C. board holder from

the catch. (See Photo 5.)

(7) Open the rear cover of the power monitor receiver P.C.

board holder and pull out the power monitor receiver P.C.

board.

Screw of the V.A. clamp

Drain hose

(8) Remove the screws of the i-see Sensor cover and the i-see

Sensor motor, and then the i-see Sensor motor.

(9) Open the i-see Sensor holder and pull out the i-see Sensor.

(10) Open the switch holder and pull out SW P.C. board.

(11) Pull the electronic control P.C. board slightly toward you

from the electrical box, and disconnect TAB3 and all the

connectors on the electronic control P.C. board.

(LD101 and LD105 are direct-mounted to the electronic

control P.C. board.)

Photo 4

Switch holder

(12) Pull out the electronic control P.C. board from the electrical

box.

(13) Remove the ground wire connected to the heat exchanger

from the electrical box. (See Photo 5.)

(14) Unhook the catches of the electrical box, and pull out the

electrical box.

Screw of the

electrical cover.

(15) Remove the screws of the terminal block cover, and then

the terminal block cover and the terminal block holder.

(See Photo 3.)

(16) Remove the terminal block by sliding it.

Photo 5

Ground wires Fan motor

connector (CN211)

Connector of the

interlock switch(Fan)

(CN1R1)

3. Removing the electrical box

(1) Remove the horizontal vane, the panel (Refer to 1.) and the

corner box.

(2) Remove the screw of the V.A. clamp, and then the indoor/

outdoor connecting wire.(See Photo 3.)

(3) Remove the switch holder and the electrical cover.

(See Photo 4.)

(4) Remove the ground wire connected to the heat exchanger

from the electrical box.(See Photo 5.)

Indoor coil thermistor

connector (CN112)

Connector of the

plasma power

P.C.board(CN1T1)

(5) Disconnect the following connectors on the electronic

control P.C. board; the fan motor connector <CN211>, the

indoor coil thermistor connector <CN112>, the vane motor

connector <CN151>, the connector of the interlock switch

(Fan) of the horizontal vane <CN1R1>, the connector of

the safety device (plasma unit) <CN1T2>, the connector of

the plasma power P.C. board <CN1T1>, the connector of

the front panel driving motor <CN1U1>.

Connector of the

safety device(Plasma

unit) (CN1T2)

Vane motor

connector (CN151)

Connector of the

front panel driving

motor (CN1U1)

(6) Unhook the catches of the electrical box, and pull out the

electrical box. (See Photo3.)

Power monitor

receiver P.C.

board holder

i-see Sensor

cover

OPERATING PROCEDURE

PHOTOS

Photo 6

4. Removing the horizontal vane motor unit

(1) Remove the horizontal vane and the panel. (Refer to 1.)

(2) Remove the screws of the horizontal vane motor unit,

and pull out the horizontal vane motor unit. (See Photo 6.)

(3) Disconnect the connector from the horizontal vane motor

unit.

Screw of the horizontal

vane motor unit

Photo 7

5. Removing the vertical vane motor unit

(1) Remove the horizontal vane, the panel (Refer to 1.) and

the corner box.

(2) Pull out the drain hose from the nozzle assembly, and

remove the nozzle assembly. (See Photo 5.)

(3) Remove the crank of the vertical vane motor unit from the

arm of the vertical vane.(See Photo 7.)

(4) Remove the screws of the vertical vane motor unit, and pull

the vertical vane motor unit. (See Photo 7.)

Arm

Crank of the vertical

vane motor unit

Screws of the vertical

vane motor unit

6. Removing the indoor fan motor and the line flow

fan

Photo 8

Motor band

(1) Remove the horizontal vane, the panel (Refer to 1.) and

the corner box.

(2) Remove the switch holder and the electrical box. (Refer to 3.)

(3) Pull out the drain hose from the nozzle assembly, and

remove the nozzle assembly.

(4) Remove the screws fixing the motor bed. (See Photo 8.)

(5) Loosen the screw fixing the line flow fan. (See Photo 9.)

(6) Remove the motor bed together with fan motor and motor

band.

(7) Release the hooks of the motor band, and remove the

motor band then pull out the indoor fan motor.

(8) Remove the screws fixing the left side of the heat

exchanger. (See Photo 10.)

(9) Lift the heat exchanger, and pull out the line flow fan to the

lower-left.

Screws of

the motor

bed

Photo 10

Photo 9

Screws of the

left side of the

heat exchanger

Screw of

the line

flow fan

OPERATING PROCEDURE

PHOTOS

7. Removing the plasma power P.C. board

(1) Remove the horizontal vane, the panel (Refer to 1.) and

the corner box.

Photo 11

Photo 12

Photo 13

(2) Remove the switch holder and the electrical cover.

(Refer to 3.)

Screw of the plasma

element holder

Front panel

driving motor

(3) Disconnect the connector of the front panel driving motor

<CN1U1> from the electronic control P.C. board.

(4) Remove the front panel driving motor.

(5) Remove the screw of the plasma element holder, and remove

the plasma element holder from the heat exchanger.

(See Photo 11.)

(6) Unhook all the catches of plasma unit cover and remove

the plasma unit cover. (See Photo 12.)

(7) Remove the terminals with locking mechanism connected

to the plasma power P.C. board and the safety device

(Plasma unit). (See Photo 13.)

(8) Remove the plasma electrical box from the plasma element

holder.

(9) Remove the screw fixing the plasma electrical box, and

open the plasma electrical box then pull out the plasma

power P.C. board from the plasma electrical box.

(See Photo 13.)

Plasma unit cover

Terminal

Screw of

the plasma

electrical box

Terminal

Safety device

(Plasma unit)

Terminal

Plasma

power

P.C. board

11 PARTS LIST

MSZ-FA25VA - (WH)

MSZ-FA35VA - (WH)

11-2. ACCESSORY AND REMOTE

CONTROLLER

11-1. INDOOR UNIT STRUCTURAL PARTS

Q'ty/unit

Symbol

Remarks

No.

Part No.

in Wiring

Diagram

Part name

MSZ-FA25VA -

MSZ-FA35VA -

(WH)

E02 897 234

E02 913 000

E02 913 067

E02 913 010

E02 914 100

E02 913 100

E02 913 975

E02 913 970

BOX

PANEL ASSEMBLY (WH)

SCREW CAP

Including No.3,4

2PCS/SET

FRONT PANEL (WH)

AIR FILTER (LEFT)

AIR FILTER (RIGHT)

CORNER BOX (RIGHT)

INSTALLATION PLATE

11-2. ACCESSORY AND REMOTE CONTROLLER

E02 913 426

REMOTE CONTROLLER

KM05A

E02 527 083

REMOTE CONTROLLER HOLDER

MSZ-FA25VA - (WH)

MSZ-FA35VA - (WH)

11-3. INDOOR UNIT ELECTRICAL PARTS

AND FUNCTIONAL PARTS

SAFETY

DEVICE

(PLASMA UNIT)

PLASMA

POWER

P.C.BOARD

25 24

27 26

SLEEVE

BEARING

INTERLOCK

SWITCH

(FAN)

SW P.C. BOARD

POWER MONITOR

RECEIVER P.C. BOARD

i-see Sensor

MOTOR

POWER MONITOR

RECEIVER P.C.

BOARD HOLDER

i-see Sensor

FUSE VARISTOR

NR11

ROOM

TEMPERATURE

THERMISTOR

11-4. INDOOR UNIT HEAT EXCHANGER

11-3. INDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS

Q'ty/unit

Symbol

in Wiring

Diagram

No.

Part No.

Part name

Remarks

MSZ-FA25VA-

(WH)

MSZ-FA35VA-

(WH)

E02 751 509 BEARING MOUNT

E02 001 504 SLEEVE BEARING

E02 897 702 DRAIN HOSE

E02 913 235 NOZZLE ASSEMBLY

E02 897 303 VANE MOTOR UNIT (HORIZONTAL)

E02 897 316 INTERLOCK SWITCH(FAN)

E02 913 303 VANE MOTOR UNIT (VERTICAL)

E02 913 040 HORIZONTAL VANE

E02 127 382 FUSE

UP & DOWN

MV1

MV2

RIGHT & LEFT

3.15A

F11

NR11

10 E02 661 385 VARISTOR

11 E02 913 095 POWER MONITOR RECEIVER P.C. BOARD HOLDER

12 E02 913 391 i-see Sensor

13 E02 914 303 i-see Sensor MOTOR

14 E02 897 784 VA CLAMP

15 E02 897 780 TERMINAL BLOCK COVER

16 E02 897 779 TERMINAL BLOCK HOLDER

17 E02 913 375 TERMINAL BLOCK

AUTO RESTART

E02 913 452 ELECTRONIC CONTROL P.C. BOARD W1

E02 914 452 ELECTRONIC CONTROL P.C. BOARD W1

RT11

RT12, RT13

19 E02 897 308 ROOM TEMPERATURE THERMISTOR

E02 913 307 INDOOR COIL THERMISTOR

E02 914 307 INDOOR COIL THERMISTOR

21 E02 913 782 SWITCH HOLDER

22 E02 897 300 INDOOR FAN MOTOR W2

23 E02 897 333 MOTOR BAND

24 E02 898 303 FRONT PANEL DRIVING MOTOR

25 E02 897 302 LINE FLOW FAN

26 E02 913 775 PLASMA ELEMENT HOLDER

27 E02 913 776 PLASMA UNIT COVER

28 E02 913 777 PLASMA ELECTRICAL BOX

29 E02 897 440 PLASMA POWER P.C. BOARD

30 E02 898 316 SAFETY DEVICE (PLASMA UNIT)

31 E02 913 774 PLASMA AIR PURIFYING FILTER UNIT

32 E02 914 774 PLASMA DEODORIZING FILTER UNIT

RC0J40-

PLASMA_A

PLASMA_D

W1 Including SW P.C. BOARD and POWER MONITOR RECEIVER P.C. BOARD

W2 Including FAN MOTOR RUBBER MOUNT (2 PCS/SET)

11-4. INDOOR UNIT HEAT EXCHANGER

INDOOR HEAT EXCHANGER

UNION (GAS)

E02 913 620

E02 914 620

34 E02 815 666

35 E02 151 667

{9.52

{6.35

UNION (LIQUID)

12 OPTIONAL PARTS

DEODORIZING CERAMIC FILTER

Replacement of the deodorizing ceramic filter(about once every 6 years)

Deodorizing ceramic filter is installed inside PLASMA DEODORIZING filter unit. The filter is fragile. Handle it with care.

NOTE: PLASMA DEODORIZING filter unit may not operate properly if the deodorizing ceramic filter is not installed.

Be sure to install the deodorizing ceramic filter.

(1) Release the two knobs to open the filter unit.

(2) Pull the side knobs to outward and then

forward to remove, as illustrated below.

(3) Pull out the deodorizing ceramic filter from the side of

the filter unit.

Deodorizing ceramic filter

(1)

(2)

(4) Install the deodorizing ceramic filter by following the

removal procedure in reverse.

Model

Part No.

MAC-305FT-E

MSZ-FA25VA -

MSZ-FA35VA -

HEAD OFFICE: MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN

New publication, effective Jan. 2005

Specifications subject to change without notice.

Distributed in Jan. 2005. No. OB371 6

Made in Japan

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