Mitsubishi MSZ-GE50VA-A1, MSZ-GE60VA-A1, MSZ-GE50VAD-A1, MSZ-GE25VAD-A1, MSZ-GE22VAD-A1 Service Manual

CONTENTS

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

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

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

4. NOISE CRITERIA CURVES ······························ 9

5. OUTLINES AND DIMENSIONS ·······················11

6. WIRING DIAGRAM ·········································· 12

7. REFRIGERANT SYSTEM DIAGRAM ············· 14

8. SERVICE FUNCTIONS ··································· 15

9. MICROPROCESSOR CONTROL ···················17

10. TROUBLESHOOTING ····································· 25

11. DISASSEMBLY INSTRUCTIONS ···················· 45

SPLIT-TYPE AIR CONDITIONERS

SERVICE MANUAL

INDOOR UNIT

PARTS CATALOG (OBB531)

NOTE:

RoHS compliant products have <G> mark on the spec name plate.

Models

MSZ-GE22VA

-

A1

MSZ-GE50VA

-

A1

MSZ-GE22VAD

-

A1

MSZ-GE50VA2

-

A1

MSZ-GE25VA

-

A1

MSZ-GE50VAD

-

A1

MSZ-GE25VAD

-

A1

MSZ-GE60VA

-

A1

MSZ-GE33VA

-

A1

MSZ-GE60VAD

-

A1

MSZ-GE35VA

-

A1

MSZ-GE71VA

-

A1

MSZ-GE35VA2

-

A1

MSZ-GE71VAD

-

A1

MSZ-GE35VAD

-

A1

MSZ-GE80VA

-

A1

MSZ-GE42VA

-

A1

MSZ-GE80VA2

-

A1

MSZ-GE42VAD

-

A1

MSZ-GE80VAD

-

A1

No. OBH531

REVISED EDITION-E

Please void OBH531 REVISED EDITION-D.

MSZ-GE22VA
MSZ-GE22VAD
MSZ-GE25VA
MSZ-GE25VAD
MSZ-GE33VA
MSZ-GE35VA
MSZ-GE35VA2
MSZ-GE35VAD

MSZ-GE42VA
MSZ-GE42VAD
MSZ-GE50VA
MSZ-GE50VA2
MSZ-GE50VAD

Revision E:

• MSZ-GE22VAD-

A1

has been added.

Outdoor unit service manual
MUZ-GE·VA Series (OBH532)
MXZ-A·VA Series (OB447)

MXZ-8A140A (OC316)
MXZ-B•VA (OBH567)

2

MSZ-GE22V A -

A1

MSZ-GE25V A -

A1

MSZ-GE33V A -

A1

MSZ-GE35V A -

A1

MSZ-GE42V A -

A1

MSZ-GE50V A -

A1

MSZ-GE60V A -

A1

MSZ-GE71V A -

A1

MSZ-GE80V A -

A1

1. New model

TECHNICAL CHANGES

1

Revision A :

• MSZ-GE60VA-

A1

, MSZ-GE71VA-A1 and MSZ-GE80VA-A1 have been added.

Revision B :

• MSZ-GE33VA-

A1

and MSZ-GE42VA-A1 have been added.

Use the specified refrigerant only

Never use any refrigerant other than that specified.

Doing so may cause a burst, an explosion, or fire when the unit is being used, serviced, or disposed of.

Correct refrigerant is specified in the manuals and on the spec labels provided with our products.

We will not be held responsible for mechanical failure, system malfunction, unit breakdown or accidents caused by

failure to follow the instructions.

Revision C:

• MSZ-GE35VA2-

A1

, MSZ-GE50VA2-A1 and MSZ-GE80VA2-A1 have been added.

Revision D:

• MSZ-GE25VAD-

A1

, MSZ-GE35VAD-A1, MSZ-GE42VAD-A1, MSZ-GE50VAD-A1, MSZ-GE60VAD-A1, MSZ-GE71VAD-A1

and MSZ-GE80VAD-A1 have been added.

MSZ-GE35VA -

A1

MSZ-GE35VA2 -

A1

MSZ-GE50VA -

A1

MSZ-GE50VA2 -

A1

1. Indoor model name has been changed.

MSZ-GE80VA -

A1

MSZ-GE80VA2 -

A1

1. Indoor model name has been changed.

2. Indoor electronic control P.C. board has been changed.

MSZ-GE25VA -

A1

MSZ-GE25VAD -

A1

MSZ-GE35VA2 -

A1

MSZ-GE35VAD -

A1

MSZ-GE42VA -

A1

MSZ-GE42VAD -

A1

MSZ-GE50VA2 -

A1

MSZ-GE50VAD -

A1

1. Indoor electronic control P.C. board has been changed.

2. V.A clamp has been changed.

MSZ-GE60VA -

A1

MSZ-GE60VAD -

A1

MSZ-GE71VA -

A1

MSZ-GE71VAD -

A1

MSZ-GE80VA2 -

A1

MSZ-GE80VAD -

A1

1. Indoor electronic control P.C. board has been changed.

2. Fan guard has been added.

3. Fan operation has been added.

MSZ-GE22VA -

A1

MSZ-GE22VAD -

A1

1. Indoor electronic control P.C. board has been changed.

Revision E:

• MSZ-GE22VAD-

A1

has been added.

OBH531E

3

Remote controller

Operation indicator lamp

Remote control receiving section

Emergency operation switch (E.O. SW)

Horizontal vane

Display section

Vertical vane

Air outlet

Fan

Air filter
(Catechin air filter)

Air inlet

Heat exchanger

Front panel

Fan guard

Air cleaning filter
(Anti-Allergy Enzyme
Filter)

MSZ-GE22VA MSZ-GE22VAD MSZ-GE25VA MSZ-GE25VAD MSZ-GE33VA
MSZ-GE35VA MSZ-GE35VA2 MSZ-GE35VAD MSZ-GE42VA MSZ-GE42VAD
MSZ-GE50VA MSZ-GE50VA2 MSZ-GE50VAD

PART NAMES AND FUNCTIONS

2

MSZ-GE60VA MSZ-GE71VA MSZ-GE80VA MSZ-GE80VA2

Operation indicator lamp

Emergency operation switch (E.O. SW)

Horizontal vane

Vertical vane

Air outlet

Fan

Air fi lter

(Nano platinum fi lter)

Air inlet

Heat exchanger

Front panel

Air cleaning fi lter
(Electrostatic anti-allergy
enzyme fi lter)

Display section

Remote control receiving section

Remote controller

OBH531E

4

ACCESSORIES

Model

MSZ-GE22VA MSZ-GE35VA MSZ-GE50VA
MSZ-GE22VAD MSZ-GE35VA2 MSZ-GE50VA2
MSZ-GE25VA MSZ-GE35VAD MSZ-GE50VAD
MSZ-GE25VAD MSZ-GE42VA
MSZ-GE33VA MSZ-GE42VAD

MSZ-GE60VA MSZ-GE80VA
MSZ-GE60VAD MSZ-GE80VA2
MSZ-GE71VA MSZ-GE80VAD
MSZ-GE71VAD

Installation plate 1 1
Installation plate fi xing screw 4 × 25 mm 5 7
Remote controller holder 1 1
Fixing screw for 3.5 × 16 mm (Black) 2 2
Battery (AAA) for remote controller 2 2
Wireless remote controller 1 1
Felt tape (For left or left-rear piping) 1 1
Air cleaning fi lter 2 2

MSZ-GE60VAD MSZ-GE71VAD MSZ-GE80VAD

Operation indicator lamp

Emergency operation switch (E.O. SW)

Horizontal vane

Vertical vane

Air outlet

Fan

Air fi lter

(Nano platinum fi lter)

Air inlet

Heat exchanger

Front panel

Air cleaning fi lter
(Electrostatic anti-allergy
enzyme fi lter)

Display section

Remote control receiving section

Remote controller

Fan guard

OBH531E

5

Indoor model

MSZ-

GE22VA

MSZ-

GE22VAD

MSZ-

GE25VA

MSZ-

GE25VAD

MSZ-

GE33VA

MSZ-

GE35VA

MSZ-

GE35VA2

MSZ-

GE35VAD

Power supply Single phase 230 V, 50 Hz

Electrical

data

Power input

1

Cooling

W

22 29

Heating 23

Running
current

1

Cooling

A

0.22 0.29

Heating 0.23

Fan

motor

Model RC0J40-FK

Current 1

Cooling

A

0.22 0.29

Heating 0.23
Dimensions W × H × D mm 798 × 295 × 232
Weight kg 10

Special remarks

Air direction 5

Airfl ow

Cooling

Super High

-

+ LONG + POWERFUL
Super High

m

3

/h

678 762
High 546
Med. 402
Low 288
Quiet 246

Heating

Super High

-

+ LONG + POWERFUL
Super High

m

3

/h

690

High 546

(420

2)

Med. 402

(354

2)
Low 288
Quiet 246

Sound level

Cooling

Super High

-

+ LONG + POWERFUL
Super High

dB (A)

42 43
High 36
Med. 29 30
Low 21 22
Quiet 19

Heating

Super High

-

+ LONG + POWERFUL
Super High

dB (A)

42 43
High 36
Med. 29 30
Low 21 22
Quiet 19

Fan speed

Cooling

Super High

-

+ LONG + POWERFUL
Super High

rpm

1,020 1,120
High 860
Med. 670
Low 530
Quiet 470

Heating

Super High

-

+ LONG + POWERFUL
Super High

rpm

1,040

High

860 (700

2)

Med.

670 (610 2)
Low 530
Quiet 470

Fan speed regulator 5

Remote controller model KM09A

NOTE: Test conditions are based on AS/NZS 3823.1.1.
Cooling: Indoor Dry-bulb temperature 27°C Wet-bulb temperature 19°C
Outdoor Dry-bulb temperature 35°C Wet-bulb temperature (24°C)
Heating: Indoor Dry-bulb temperature 20°C Wet-bulb temperature 15.5°C
Outdoor Dry-bulb temperature 7°C Wet-bulb temperature 6°C

1 Measured under rated operating frequency. 2 For multi system.

SPECIFICATION

3

OBH531E

6

Indoor model MSZ-GE42VA MSZ-GE42VAD MSZ-GE50VA MSZ-GE50VA2 MSZ-GE50VAD

Power supply Single phase 230 V, 50 Hz

Electrical

data

Power input

1

Cooling

W

29 43

Heating 30 39

Running
current

1

Cooling

A

0.29 0.39

Heating 0.31 0.36

Fan

motor

Model RC0J40-FK

Current 1

Cooling

A

0.29 0.39

Heating 0.31 0.36
Dimensions W × H × D mm 798 × 295 × 232
Weight kg 10

Special remarks

Air direction 5

Airfl ow

Cooling

Super High

-

+ LONG + POWERFUL
Super High

m

3

/h

768 906
High 624 714
Med. 516 576
Low 408 468
Quiet 348

390(420 2)

Heating

Super High

-

+ LONG + POWERFUL
Super High

m

3

/h

786 870
High 624 732

(612

2)

Med. 516 576

(540

2)
Low 420 468
Quiet 348 390

Sound level

Cooling

Super High

-

+ LONG + POWERFUL
Super High

dB (A)

46 49
High 40 44
Med. 35 38
Low 30 33
Quiet 26 28

Heating

Super High

-

+ LONG + POWERFUL
Super High

dB (A)

46 48
High 40 43
Med. 35 37
Low 30 33
Quiet 26 28

Fan speed

Cooling

Super High

-

+ LONG + POWERFUL
Super High

rpm

1,120 1,280
High 950 1,060
Med. 810 890
Low 680 750
Quiet 600

650 (690

2)

Heating

Super High

-

+ LONG + POWERFUL
Super High

rpm

1,140 1,240
High

950 (930

2) 1,080(930 2)

Med. 810

890 (840 2)
Low 690 750
Quiet 600 650

Fan speed regulator 5

Remote controller model KM09A

NOTE: Test conditions are based on AS/NZS 3823.1.1.
Cooling: Indoor Dry-bulb temperature 27°C Wet-bulb temperature 19°C
Outdoor Dry-bulb temperature 35°C Wet-bulb temperature (24°C)
Heating: Indoor Dry-bulb temperature 20°C Wet-bulb temperature 15.5°C
Outdoor Dry-bulb temperature 7°C Wet-bulb temperature 6°C

1 Measured under rated operating frequency. 2 For multi system.

OBH531E

7

Indoor model

MSZ-

GE60VA

MSZ-

GE60VAD

MSZ-

GE71VA

MSZ-

GE71VAD

MSZ-

GE80VA

MSZ-

GE80VA2

MSZ-

GE80VAD

Power supply Single phase 230 V, 50 Hz

Electrical

data

Power input

1

Cooling

W

39 48 65 58 65 58

Heating 61 62 65 58 65 58

Running
current

1

Cooling

A

0.34 0.43 0.55 0.51 0.55 0.51

Heating 0.52 0.53 0.55 0.51 0.55 0.51

Fan

motor

Model RC0J56-AF

Current 1

Cooling

A

0.34 0.43 0.55 0.51 0.55 0.51

Heating 0.52 0.53 0.55 0.51 0.55 0.51
Dimensions W × H × D mm 1,100 × 325 × 238
Weight kg 16

Special remarks

Air direction 5

Airfl ow

Cooling

Super High

1,236 1,200 1,338 1,254 1,338 1,254

+ LONG + POWERFUL
Super High

m

3

/h

1,098 1,074 1,068 1,074 1,068
High 942 936 924
Med. 810 804 798
Low 684 678 690
Quiet 588 582

Heating

Super High

1,236 1,338 1,338 1,254 1,338 1,254

+ LONG + POWERFUL
Super High

m

3

/h

1,098 1,074 1,068 1,074 1,068
High

942(882

2)

936 924
Med. 810 804 798
Low 684 678 690
Quiet 588 612

Sound level

Cooling

Super High

52 53

+ LONG + POWERFUL
Super High

dB (A)

49
High 45
Med. 41
Low 37
Quiet 29 30

Heating

Super High

52
+ LONG + POWERFUL

Super High

dB (A)

49
High 45
Med. 41
Low 37
Quiet 29 30

Fan speed

Cooling

Super High

1,260 1,280 1,330 1,300 1,330 1,300

+ LONG + POWERFUL
Super High

rpm

1,070 1,090 1,110 1,140 1,110 1,140
High 940 960 980 1,010 980 1,010
Med. 830 850 870 900 870 900
Low 720 740 780 800 780 800
Quiet 640 660 680 700 680 700

Heating

Super High

1,260 1,280 1,330 1,300 1,330 1,300
+ LONG + POWERFUL

Super High

rpm

1,070 1,090 1,110 1,140 1,110 1,140
High

940(890 2)

960 980 1,010 980 1,010
Med. 830 850 870 900 870 900
Low 720 740 780 800 780 800
Quiet 640 660 710 730 710 730

Fan speed regulator 5

Remote controller model SG10A SG12D SG10A SG12D SG10A SG12D

NOTE: Test conditions are based on AS/NZS 3823.1.1.
Cooling: Indoor Dry-bulb temperature 27°C Wet-bulb temperature 19°C
Outdoor Dry-bulb temperature 35°C Wet-bulb temperature (24°C)
Heating: Indoor Dry-bulb temperature 20°C Wet-bulb temperature 15.5°C
Outdoor Dry-bulb temperature 7°C Wet-bulb temperature 6°C

1 Measured under rated operating frequency. 2 For multi system.

OBH531E

8

Specifications and rated conditions of main electric parts

Fuse (F11)

T3.15AL250V
Horizontal vane motor (MV), (MV1) 12 VDC
Vertical vane motor

MSZ-GE60VA MSZ-GE71VA
MSZ-GE60VAD MSZ-GE70VAD
MSZ-GE80VA MSZ-GE80VA2
MSZ-GE80VAD

(MV2) 12 VDC

Varistor (NR11)

S10K300E2K1 [ERZV10D471(MSZ-GE22/25/33/35/42/50),ERZV14D471(MSZ-GE60/71/80)]

Terminal block (TB)

3P

OBH531E

9

MSZ-GE22VA MSZ-GE22VAD
MSZ-GE25VA MSZ-GE25VAD

90

80

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, 0 dB = 20μPa

BAND CENTER FREQUENCIES, Hz

COOLING

FUNCTION

SPL(dB(A))

LINE

Super High

FAN SPEED

HEATING

43

43

NC-10

MSZ-GE33VA MSZ-GE35VA
MSZ-GE35VA2 MSZ-GE35VAD

90

80

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, 0 dB = 20μPa

BAND CENTER FREQUENCIES, Hz

COOLING

FUNCTION

SPL(dB(A))

LINE

Super High

FAN SPEED

HEATING

42

42

NC-10

NOISE CRITERIA CURVES

4

90

80

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, 0 dB = 20μPa

BAND CENTER FREQUENCIES, Hz

COOLING

FUNCTION

SPL(dB(A))

LINE

Super High

FAN SPEED

HEATING

49

48

NC-10

MSZ-GE50VA MSZ-GE50VA2
MSZ-GE50VAD

MSZ-GE42VA MSZ-GE42VAD

90

80

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, 0dB=20μPa

BAND CENTER FREQUENCIES, Hz

COOLING

FUNCTION

SPL(dB(A))

LINE

Super High

FAN SPEED

HEATING

46

46

NC-10

OBH531E

10

Test conditions

Cooling: Dry-bulb temperature 27°C

Wet-bulb temperature 19°C

Heating: Dry-bulb temperature 20°C

Wet-bulb temperature 15.5°C

INDOOR UNIT

WALL

MICROPHONE

0.8m

1m

MSZ-GE60VA MSZ-GE60VAD MSZ-GE71VA MSZ-GE71VAD

90

80

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

BAND CENTER FREQUENCIES, Hz

COOLING

FUNCTION

SPL(dB(A))

LINE

Super High

FAN SPEED

HEATING

49

49

NC-10

OCTAVE BAND SOUND PRESSURE LEVEL, 0 dB = 20μPa

90

80

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

BAND CENTER FREQUENCIES, Hz

COOLING

FUNCTION

SPL(dB(A))

LINE

Super High

FAN SPEED

HEATING

49

49

NC-10

OCTAVE BAND SOUND PRESSURE LEVEL, 0 dB = 20μPa

90

80

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

BAND CENTER FREQUENCIES, Hz

COOLING

FUNCTION

SPL(dB(A))

LINE

Super High

FAN SPEED

HEATING

49

49

NC-10

OCTAVE BAND SOUND PRESSURE LEVEL, 0 dB = 20μPa

MSZ-GE80VA MSZ-GE80VA2
MSZ-GE80VAD

OBH531E

11

MSZ-GE22VA MSZ-GE22VAD MSZ-GE25VA MSZ-GE25VAD MSZ-GE33VA
MSZ-GE35VA MSZ-GE35VA2 MSZ-GE35VAD MSZ-GE42VA MSZ-GE42VAD
MSZ-GE50VA MSZ-GE50VA2 MSZ-GE50VAD

Unit: mm

211.5

231.5

253

21.5

155 155

80

80

225 225

3

19

159

58

5

232

56

69

798
785 6.5

13061950

295

50

42

56

43

42

8

100

107

112

45

56

69

33861

212.5

254

41

42

315 84

11×26 Oblong hole

11×20 Oblong hole

Installation plate

Indoor unit

Wall hole ø65

Air in

Air out

Installation plate

Piping

Drain hose

Piping

Insulation ø35 O.D
Liquid line ø6.35 - 0.5 m (Flared connection ø6.35)
Gas line ø9.52 - 0.43 m

(Flared connection: ø9.52 (22/25/33/35/42), ø12.7 (50))

Drain hose Insulation ø28 O.D Connected part ø16 O.D

OUTLINES AND DIMENSIONS

5

1090 5

110 0

45 238.5

258.5

3

280

225 225

129

239.5

281

44

49.5 500.5 439.5

199.5199.5

65

63

76 843 181

65

65

30

63

60

193

18

65

67

63

325

3

100

125

160

110

(

70°

)

238

5

210

21.5

184

12

110.5

Piping

Insulation Ø50 O.D

Liquid line

Ø9.52 - 0.5m (Flared connection Ø9.52)

Gas line

Ø12 - 0.43m (Flared connection Ø15.88)

Drain hose Insulation

Ø28 Connected part Ø16 O.D

Piping

Insulation Ø50 O.D

Liquid line

Ø9.52 - 0.5m (Flared connection Ø6.35)

Gas line

Ø12 - 0.43m (Flared connection Ø15.88)

Drain hose Insulation

Ø28 Connected part Ø16 O.D

Air out

Piping

Drain hose

11×26 Oblong hole

11×20 Oblong hole

Installation plate

Indoor unit

Wall hole

Ø

75

Air in

Installation plate

MSZ-GE60

MSZ-GE71 MSZ-GE80

MSZ-GE60VA MSZ-GE60VAD MSZ-GE71VA MSZ-GE71VAD
MSZ-GE80VA MSZ-GE80VA2 MSZ-GE80VAD

OBH531E

12

MSZ-GE22VA MSZ-GE25VA MSZ-GE33VA MSZ-GE35VA MSZ-GE35VA2

WIRING DIAGRAM

6

MSZ-GE42VA MSZ-GE50VA MSZ-GE50VA2

MSZ-GE22VAD MSZ-GE25VAD MSZ-GE35VAD

OBH531E

13

MSZ-GE60VA MSZ-GE71VA MSZ-GE80VA MSZ-GE80VA2

MSZ-GE42VAD MSZ-GE50VAD

MSZ-GE60VAD MSZ-GE71VAD MSZ-GE80VAD

OBH531E

14

MSZ-GE22VA MSZ-GE22VAD MSZ-GE25VA MSZ-GE25VAD MSZ-GE33VA
MSZ-GE35VA MSZ-GE35VA2 MSZ-GE35VAD MSZ-GE42VA MSZ-GE42VAD
MSZ-GE50VA MSZ-GE50VA2 MSZ-GE50VAD

MSZ-GE60VA MSZ-GE60VAD MSZ-GE71VA MSZ-GE71VAD
MSZ-GE80VA MSZ-GE80VA2 MSZ-GE80VAD

Indoor
heat
exchanger

Flared connection

Room temperature
thermistor
RT11

Flared connection

Refrigerant pipe ø9.52 (

MSZ-

GE22/25/33/35/42)

ø12.7 (

MSZ-

GE50)

(with heat insulator)

Refrigerant pipe ø6.35
(with heat insulator)

Indoor coil
thermistor
RT12 (main)

Indoor coil
thermistor
RT13 (sub)

Refrigerant flow in cooling
Refrigerant flow in heating

Unit: mm

REFRIGERANT SYSTEM DIAGRAM

7

Indoor
heat
exchanger

Flared connection

Room temperature
thermistor
RT11

Flared connection

Refrigerant pipe ø15.88
(with heat insulator)

Refrigerant pipe ø6.35 (MSZ-GE60)

ø9.52 (MSZ-GE71/80)

(with heat insulator)

Indoor coil
thermistor
RT12 (main)

Indoor coil
thermistor
RT13 (sub)

Refrigerant flow in cooling
Refrigerant flow in heating

OBH531E

15

8-1. TIMER SHORT MODE

For service, the following set time can be shortened by bridging JPG and JPS on the electronic control P.C. board. (Refer
to 10-7.2,3.)
Set time: 3 minutes → 3 seconds (It takes 3 minutes for the compressor to start operation. However, the starting time is
shortened by bridging 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:

NOTE: For modification, take out

the batteries and press the
OPERATE/STOP (ON/OFF)
button 2 or 3 times at first.

After modification, put back

the batteries then press the
RESET button.

J1

Table 1

1 unit operation 2 units operation 3 units operation 4 units operation
No. 1 unit No modifi cation Same as at left Same as at left Same as at left
No. 2 unit — Solder J1 Same as at left Same as at left
No. 3 unit — — Solder J2 Same as at left
No. 4 unit — — — 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 accept 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 is turned OFF, or the power supply is shut down.
Please conduct the above setting once again after the power has restored.

SERVICE FUNCTIONS

8

MSZ-GE22VA MSZ-GE22VAD MSZ-GE25VA MSZ-GE25VAD MSZ-GE33VA
MSZ-GE35VA MSZ-GE35VA2 MSZ-GE35VAD MSZ-GE42VA MSZ-GE42VAD
MSZ-GE50VA MSZ-GE50VA2 MSZ-GE50VAD

J2

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.

J1

J2

MSZ-GE22VA MSZ-GE22VAD MSZ-GE25VA MSZ-GE25VAD MSZ-GE33VA
MSZ-GE35VA MSZ-GE35VA2 MSZ-GE35VAD MSZ-GE42VA MSZ-GE42VAD
MSZ-GE50VA MSZ-GE50VA2 MSZ-GE50VAD MSZ-GE60VA MSZ-GE60VAD
MSZ-GE71VA MSZ-GE71VAD MSZ-GE80VA MSZ-GE80VA2 MSZ-GE80VAD

MSZ-GE60VA MSZ-GE60VAD MSZ-GE71VA MSZ-GE71VAD
MSZ-GE80VA MSZ-GE80VA2 MSZ-GE80VAD

OBH531E

16

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. “AUTO RESTART FUNCTION” automatically starts operation in
the same mode just before the shutoff of the main power.

Operation

If the main power has been cut, the operation settings remain.
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 disable “AUTO RESTART FUNCTION”

Turn off the main power for the unit.
Solder the jumper wire to JR07 on the indoor electronic control P.C. board. (Refer to 10-7.3.)

(MSZ-GE22/25/33/35/42/50/60/71/80VA, MSZ-GE35/50/82VA2, MSZ-GE22/25/35/42/50VAD)

Cut the jumper wire to JR77 on the indoor electronic control P.C. board. (Refer to 10-7.3.)

(MSZ-GE60/71/80VAD)

CN 111CN112CN151CN10A

Indoor electronic
control P.C. board

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 can-

celled.

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

MSZ-GE22VA MSZ-GE22VAD
MSZ-GE25VA MSZ-GE25VAD
MSZ-GE33VA
MSZ-GE35VA MSZ-GE35VA2 MSZ-GE35VAD
MSZ-GE42VA MSZ-GE42VAD
MSZ-GE50VA MSZ-GE50VA2 MSZ-GE50VAD

CN 111

CN112

CN152

CN10A

Indoor electronic
control P.C. board

JR07

CN151

MSZ-GE60VA
MSZ-GE71VA
MSZ-GE80VA MSZ-GE80VA2

CN 111

CN112

CN152

CN10A

Indoor electronic
control P.C. board

JR77

CN151

MSZ-GE60VAD
MSZ-GE71VAD
MSZ-GE80VAD

OBH531E

17

WIRELESS REMOTE CONTROLLER

ON TIMER button

CLOCK SET button

TIME SET buttons
FORWARD button
BACKWARD button

OFF TIMER button

RESET button

i save button

VANE CONTROL button

Signal transmitting section

Operation display section

Temperature buttons

OPERATE/STOP
(ON/OFF) button

FAN SPEED CONTROL button

OPERATION SELECT button

ECONO COOL button

Indication of
remote controller
model is on back

NOTE: Last setting will be stored after the unit is turned OFF with the remote controller. Indoor unit receives the signal of the

remote controller with beeps.

MICROPROCESSOR CONTROL

9

MSZ-GE22VA MSZ-GE22VAD MSZ-GE25VA MSZ-GE25VAD MSZ-GE33VA
MSZ-GE35VA MSZ-GE35VA2 MSZ-GE35VAD MSZ-GE42VA MSZ-GE42VAD
MSZ-GE50VA MSZ-GE50VA2 MSZ-GE50VAD

MSZ-GE60VA MSZ-GE71VA MSZ-GE80VA MSZ-GE80VA2

Signal transmitting section

Operation display section

Temperature buttons

OPERATE/STOP
(ON/OFF) button

Indication of
remote controller
model is on back

FAN SPEED CONTROL button

OPERATION SELECT button

ECONO COOL button

POWERFUL button

CLOCK SET button

WIDE VANE CONTROL button

LONG button

WEEKLY TIMER
set button

TIME, TIMER set buttons
FORWARD button
BACKWARD button

RESET button

i save button

VANE CONTROL button

MSZ-GE22VA MSZ-GE22VAD MSZ-GE25VA MSZ-GE25VAD MSZ-GE33VA
MSZ-GE35VA MSZ-GE35VA2 MSZ-GE35VAD MSZ-GE42VA MSZ-GE42VAD
MSZ-GE50VA MSZ-GE50VA2 MSZ-GE50VAD MSZ-GE60VA MSZ-GE60VAD
MSZ-GE71VA MSZ-GE71VAD MSZ-GE80VA MSZ-GE80VA2 MSZ-GE80VAD

OBH531E

18

Operation Indicator lamp

The operation indicator at the right side of the indoor unit indicates the operation state.

•The following indication applies regardless of shape of the indication.

Indication Operation state Room temperature

The unit is operating to
reach the set temperature

About 2°C or more away
from set temperature

The room temperature is
approaching the set tem­perature

About 1 to 2°C from set
temperature

Standby mode
(Only during multi system
operation)

-

INDOOR UNIT DISPLAY SECTION

Lighted

Blinking

Not lighted

MSZ-GE60VAD MSZ-GE71VAD MSZ-GE80VAD

Signal transmitting section

Operation display section

Temperature buttons

OPERATE/STOP
(ON/OFF) button

Indication of
remote controller
model is on back

FAN SPEED CONTROL button

OPERATION SELECT button

ECONO COOL button

POWERFUL button

CLOCK SET button

WIDE VANE CONTROL button

LONG button

WEEKLY TIMER
set button

TIME, TIMER set buttons
FORWARD button
BACKWARD button

RESET button

i save button

VANE CONTROL button

9-1. COOL ( ) OPERATION

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

OPERATION INDICATOR lamp of the indoor unit turns on with a beep tone.

(2) Select COOL mode with OPERATION SELECT button.
(3) Press TEMPERATURE buttons [TOO WARM or TOO COOL button (MSZ-22/25/33/35/42/50)/TEMP

or button

(MSZ-GE60/71/80)] to select the desired temperature. The setting range is 16 - 31°C.

1. Coil frost prevention

The compressor operational frequency is controlled by the temperature of the indoor heat exchanger to prevent the coil
from frosting.
When the temperature of indoor heat exchanger becomes too low, the coil frost prevention mode works.
The indoor fan operates at the set speed and the compressor stops. This mode continues until the temperature of indoor
heat exchanger rises.

2. Low outside temperature operation

When the outside temperature is lower, low outside temperature operation starts, and the outdoor fan slows or stops.

3. Indoor fan speed control

When the thermostat turns OFF, the indoor fan stops running to reduce power consumption.
After that, the indoor fan stops for 60 seconds and then operates at Very Low for 10 seconds to sense accurate room

temperature. The indoor fan alternates ON and OFF at this interval while the thermostat is OFF.

When the room temperature rises and the thermostat is ON, the indoor fan starts running according to the settings on

the remote controller. (MSZ-GE60/71/80)

NOTE: Last setting will be stored after the unit is turned OFF with the remote controller. Indoor unit receives the signal of the

remote controller with beeps.

OBH531E

19

9-2. DRY ( ) OPERATION

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

OPERATION INDICATOR lamp of the indoor unit turns on with a beep tone.
(2) Select DRY mode with OPERATION SELECT button.
(3) The set temperature is determined from the initial room temperature.

1. Coil frost prevention

Coil frost prevention works the same way as that in COOL mode. (9-1.1.)

2. Low outside temperature operation

Low outside temperature operation works the same way as that in COOL mode. (9-1.2.)

3. Indoor fan speed control

Indoor fan speed control works the same way as that in COOL mode. (9-1.3.)

9-3. HEAT ( ) OPERATION

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

OPERATION INDICATOR lamp of the indoor unit turns on with a beep tone.

(2) Select HEAT mode with OPERATION SELECT button.
(3) Press TEMPERATURE buttons [TOO WARM or TOO COOL button (MSZ-22/25/33/35/42/50)/TEMP

or button

(MSZ-GE60/71/80)] to select the desired temperature. The setting range is 16 - 31°C.

1. Cold air prevention control

When the compressor is not operating or is starting, and the temperature of indoor heat exchanger and/or the room tem-

perature is low or when defrosting is being done, the indoor fan will stop or rotate in Very Low speed.

2. High pressure protection

The compressor operational frequency is controlled by the temperature of the indoor heat exchanger to prevent the con-

densing pressure from increasing excessively.

When the temperature of indoor heat exchanger becomes too high, the high pressure protection works.

The indoor fan operates following the cold air prevention control. This mode continues until the temperature of indoor

heat exchanger falls.

3. Defrosting

Defrosting starts when the temperature of outdoor heat exchanger becomes too low.
The compressor stops once, the indoor/outdoor fans stop, the 4-way valve reverses, and the compressor re-starts.
This mode continues until the temperature of outdoor heat exchanger rises or the fixed time passes.

9-4. FAN ( )OPERATION (MSZ-GE60/71/80VAD)

(1) Press OPERATE/STOP (ON/OFF) button. OPERATION INDICATOR lamp of the indoor unit turns ON with a beep tone.
(2) Select FAN mode with OPERATION SELECT button.
(3) Select the desired fan speed. When AUTO, it becomes Low. Only indoor fan operates. Outdoor unit does not operate.

9-5. AUTO CHANGE OVER ··· AUTO MODE OPERATION

Once desired temperature is set, unit operation is switched automatically between COOL and HEAT operation.

Mode selection

(1) Initial mode

When unit starts the operation with AUTO operation from OFF:

• If the room temperature is higher than the set temperature, operation starts in COOL mode.

• If the room temperature is equal to or lower than the set temperature, operation starts in HEAT mode.

(2) Mode change

COOL mode changes to HEAT mode when about 15 minutes have passed with the room temperature 1°C below the
set temperature.
HEAT mode changes to COOL mode when about 15 minutes have passed with the room temperature 1°C above the
set temperature.

NOTE 1

If two or more indoor units are operating in multi system, there might be a case that the indoor unit, which is operating in
(AUTO), cannot change over to the other operating mode (COOL ↔ HEAT) and becomes a state of standby.
Refer to NOTE 2 “FOR MULTI SYSTEM AIR CONDITIONER”.

NOTE 2
FOR MULTI SYSTEM AIR CONDITIONER OUTDOOR UNIT: MXZ series

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

• When you try to operate two or more indoor units with one outdoor unit simultaneously, one for the cooling and the others for
heating, the operation mode of the indoor unit that operates first is selected. Other indoor units cannot operate, and operation
indicator lamp flashes as shown in the figure below. In this case, please set all the indoor units to the same operation mode.

• When indoor unit starts 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.

OPERATION INDICATOR

Lighted

Blinking

Not lighted

OBH531E

20

9-6. AUTO VANE OPERATION

1. Horizontal vane

(1) Vane motor drive

These models are equipped with a stepping motor for the horizontal vane. The rotating direction, speed, and angle of
the motor are controlled by pulse signals (approximately 12 V) transmitted from indoor microprocessor.

(2) The horizontal vane angle and mode change as follows by pressing VANE CONTROL button.

(3) Positioning

To confirm the standard position, the vane moves until it touches the vane stopper. Then the vane is set to the
selected angle.
Confirming of standard position is performed in the following cases:

(a) When the operation starts or finishes (including timer operation).
(b) When the test run starts.
(c) When standby mode (only during multi system operation) starts or finishes.

(4) VANE AUTO ( ) mode

In VANE AUTO mode, the microprocessor automatically determines the vane angle to make the optimum room tem­perature distribution.

Horizontal

position

In COOL and DRY operation
Vane angle is fixed to Horizontal position.

In HEAT operation
Vane angle is fixed to Angle 5.

AUTO

1 2 3 4 5

SWING

AUTO

12345

SWING

(5) STOP (operation OFF) and ON TIMER standby

In the following cases, the horizontal vane returns to the closed position.

(a) When OPERATE/STOP (ON/OFF) button is pressed (POWER OFF).
(b) When the operation is stopped by the emergency operation.
(c) When ON TIMER is ON standby.

(6) Dew prevention

During COOL or DRY operation with the vane angle at Angle 4 or 5 when the compressor cumulative operation time
exceeds 1 hour, the vane angle automatically changes to Angle 1 for dew prevention.

(9) ECONO COOL ( ) operation (ECONOmical operation)

When ECONO COOL button is pressed in COOL mode, set temperature is automatically set 2°C higher by the
microprocessor. [However, the temperature on the LCD screen on the remote controller is not changed. (MSZ-
GE60/71/80)] Also the horizontal vane swings in various cycle.
SWING operation makes you feel cooler than set temperature. So, even though the set temperature is higher, the
air conditioner can keep comfort. As a result, energy can be saved.
To cancel this operation, select a different mode or press one of the following buttons in ECONO COOL operation:
ECONO COOL, VANE CONTROL, LONG (MSZ-GE60/71/80) or POWERFUL (MSZ-GE60/71/80) button.

(

10

) POWERFUL ( ) operation (MSZ-GE60/71/80)

The air conditioner automatically adjusts the fan speed and the set temperature, and operates the POWERFUL mode.

The POWERFUL mode is cancelled automatically 15 minutes after operation starts, or when POWERFUL button

is pressed once again within 15 minutes after operation starts. The operation mode returns to the mode prior to
POWERFUL operation. To manually cancel this operation. Select a different mode or press one of the following but­tons: OPERATE/STOP (ON/OFF), ECONO COOL, FAN SPEED CONTROL or i-save button.

(7) SWING ( or ) mode

By selecting SWING mode with VANE CONTROL button, the horizontal vane swings vertically.

(8) Cold air prevention in HEAT operation

The horizontal vane position is set to Upward.
NOTE: When 2 or more indoor units are operated with multi outdoor unit, even if any indoor unit turns thermostat off,

this control does not work in the indoor unit.

MSZ-GE22VA MSZ-GE22VAD MSZ-GE25VA MSZ-GE25VAD MSZ-GE33VA
MSZ-GE35VA MSZ-GE35VA2 MSZ-GE35VAD MSZ-GE42VA MSZ-GE42VAD
MSZ-GE50VA MSZ-GE50VA2 MSZ-GE50VAD

MSZ-GE60VA MSZ-GE60VAD MSZ-GE71VA MSZ-GE71VAD
MSZ-GE80VA MSZ-GE80VA2 MSZ-GE80VAD

OBH531E

21

2. Vertical vane (MSZ-GE60/71/80)

(1) Vane motor drive
These models are equipped with a stepping motor for the vertical vane. The rotating direction, speed, and angle of

the motor are controlled by pulse signals (approximately 12 V) transmitted from microprocessor.
(2) The vertical vane angle and mode change as follows by pressing WIDE VANE CONTROL button.
(3) Positioning
To confirm the standard position, the vane moves until it touches the vane stopper. Then the vane is set to the select-

ed angle.

Confirming of standard position is performed in the following cases:
(a) OPERATE/STOP (ON/OFF) button is pressed (POWER ON).
(b) SWING is started.

123456

(SWING)

(

11

) LONG MODE ( ) (MSZ-GE60/71/80)

By pressing LONG button indoor fan speed becomes faster than setting fan speed on the remote controller, and the

horizontal vane moves to the position for LONG mode. The remote controller displays “

”. LONG mode is can­celled when LONG button is pressed once again or VANE CONTROL button is pressed or ECONO COOL button is
pressed in COOL mode. In the following example, the vertical vane is set to (front.).

COOL / DRY / HEAT / AUTO CHANGE OVER

Fan speed : Faster
Solid arrow : When the LONG mode is used.
Dotted arrow : When the LONG mode is not used.

(4) SWING ( ) MODE
By selecting SWING mode with WIDE VANE CONTROL button, the vertical vane swings horizontally. The remote

controller displays “

”. Swing mode is cancelled when WIDE MODE CONTROL button is pressed once again.

9-7. TIMER OPERATION

1. How to set the time

(1) Check that the current time is set correctly.

NOTE: Timer operation will not work without setting the current time. Initially “0:00” blinks at the current time display

of TIME MONITOR, so set the current time correctly with CLOCK SET button.

How to set the current time

(a) Press the CLOCK set button.
(b) Press the TIME SET buttons (

and / and ) to set the current time.

• Each time FORWARD button (

/ ) is pressed, the set time increases by 1 minute, and each time

BACKWARD button ( / ) is pressed, the set time decreases by 1 minute.

• Pressing those buttons longer, the set time increases/decreases by 10 minutes.

(c) Press the CLOCK set button.

(2) Press OPERATE/STOP (ON/OFF) button to start the air conditioner.
(3) Set the time of timer.

ON timer setting

(a) Press ON TIMER button( / ) during operation.
(b) Set the time of the timer using TIME SET buttons ( and / and ).

OFF timer setting

(a) Press OFF TIMER button (

/ ) during operation.

(b) Set the time of the timer using TIME SET buttons ( and / and ).

Each time FORWARD button ( / ) is pressed, the set time increases by 10 minutes: each time

BACKWARD

button ( / ) is pressed, the set time decreases by 10 minutes.

2. To release the timer

To release ON timer, press ON TIMER button ( / ).

To release OFF timer, press OFF TIMER button(

/ ).

TIMER is cancelled and the display of set time disappears.

OBH531E

22

(Example 1) The current time is 8:00 PM.

The unit turns off at 11:00 PM, and on at 6:00 AM.

• OFF timer and ON timer can be used in combination. The timer of the set time that is reached first will operate first.

• “

/ ” and “ / ” display shows the order of OFF timer and ON timer operation.

PROGRAM TIMER

(Example 2) The current time is 11:00 AM.

The unit turns on at 5:00 PM, and off at 9:00 PM.

NOTE: If the main power is turned OFF or a power failure occurs while ON/OFF timer is active, the timer setting is can-

celled. As these models are equipped with an auto restart function, the air conditioner starts operating with timer
cancelled when power is restored.

MSZ-GE60/71/80

MSZ-GE22/25/33
MSZ-GE35/42/50

MSZ-GE60/71/80

MSZ-GE22/25/33
MSZ-GE35/42/50

9-8. WEEKLY TIMER OPERATION (MSZ-GE60/71/80)

• A maximum of 4 ON or OFF timers can be set for individual days of the week.

• A maximum of 28 ON or OFF timers can be set for a week.

* Make sure that the current time and day are set correctly.

(1) Press button to enter the weekly timer setting mode.

(2) Press

and buttons to select setting day and number.

* blinks.

Pressing selects the day of
the week to be set.

Pressing selects
the setting number.

E.g. : [Mon Tue ... Sun]

and [1] are selected.

* All days can be selected.

NOTE:

The simple ON/OFF timer setting is available while the weekly timer is on. In this case, the ON/OFF timer has priority over the weekly
timer; the weekly timer operation will start again after the simple ON/OFF timer is complete.
When the weekly timer is set, temperature cannot be set to 10°C.
The weekly timer operation and i-save operation cannot be used together.

•

•

•

1. How to set the weekly timer

OBH531E

23

(3) Press , , and buttons to set ON/OFF, time, and temperature.

E.g. : [ON], [6:00]

and [24°C] are
selected.

Pressing

selects ON/OFF timer.

Pressing
deletes timer setting.

Pressing

adjusts the time.

Pressing

adjusts the tem­perature.

* Hold down the button to change the time quickly.

Press and buttons to continue setting the timer for other days and/or numbers.

(4) Press

button to complete and transmit the weekly timer setting.

* which was blink-

ing goes out, and the
current time will be
displayed.

(5) Press button to turn the weekly timer ON. ( lights.)

•When the weekly timer is ON, the day of the week whose timer setting is complete, will light.

Press

button again to turn the weekly timer OFF. ( goes out.)

NOTE:

The saved settings will not be cleared when the weekly timer is turned OFF.

2. Checking weekly timer setting

2. Checking weekly timer setting

(1) Press button to enter the weekly timer setting mode.

*

blinks.

(2) Press

or buttons to view the setting of the particular day or number.

(3) Press

button to exit the weekly timer setting.

NOTE:

When all days of the week are selected to view the settings and a different setting is included among them, will be
displayed.

NOTE:

• Press

button to transmit the setting information of weekly timer to the indoor unit. Point the remote controller toward the

indoor unit for 3 seconds.

• When setting the timer for more than one day of the week or one number,

button does not have to be pressed per each

setting. Press

button once after all the settings are complete. All the weekly timer settings will be saved.

• Press

button to enter the weekly timer setting mode, and press and hold button for 5 seconds to erase all weekly

timer settings. Point the remote controller toward the indoor unit.

OBH531E

24

9-10. EMERGENCY/TEST OPERATION

In the case of test run operation or emergency operation, use
EMERGENCY OPERATION switch on the right side of the indoor unit.
Emergency operation is available when the remote controller is miss­ing or has failed, or when the batteries in the remote controller are
running down. The unit will start and OPERATION INDICATOR lamp
will light up.
The first 30 minutes of operation is the test run operation. This opera­tion is for servicing. The indoor fan runs at High speed and the tem­perature control does not work.
After 30 minutes of test run operation, the system shifts to
EMERGENCY COOL/HEAT MODE with a set temperature of 24°C.
The fan speed shifts to Med.
The coil frost prevention works even in the test run or the emergency opera­tion.
In the test run or emergency operation, the horizontal vane operates in
VANE AUTO (

) mode.
Emergency operation continues until EMERGENCY OPERATION
switch is pressed once or twice or the unit receives any signal from
the remote controller. In the latter case, normal operation will start.

NOTE: Do not press EMERGENCY OPERATION switch during normal operation.

Operation mode COOL/HEAT
Set temperature 24°C

Fan speed Med.

Horizontal vane Auto

The operation mode is indicated by the
Operation Indicator lamp as following

Operation Indicator lamp

EMERGENCY COOL

↓

EMERGENCY HEAT

↓

STOP

Lighted

Not lighted

9-9. i-save ( ) OPERATION

1. How to set i-save operation

(1) Press OPERATE/STOP (ON/OFF) button.
(2) Select COOL, HEAT or ECONO COOL mode.
(3) Press i-save button.
(4) Set the temperature, fan speed, and airfl ow direction for i-save operation.

NOTE:

• i-save operation cannot be selected during DRY or AUTO mode operation.

• The setting range of HEAT mode i-save operation is 10°C and 16 - 31°C.

• 2 groups of setting can be saved. (One for COOL/ECONO COOL, one for HEAT)

• i-save operation and the weekly timer operation cannot be used together.

2. How to cancel operation

• Press i-save button again.

• i-save operation can also be cancelled by pressing OPERATION SELECT button to change the operation mode.
The same setting is select from the next time by simply pressing i-save button.

9-11. 3-MINUTE TIME DELAY OPERATION

When the system turns OFF, compressor will not restart for 3 minutes as 3-minute time delay function operates to protect
compressor from overload.

Emergency
operation switch
(E.O. SW)

OBH531E

25

RESET button

Insert the negative pole of the
batteries first. Check if the polarity
of the batteries is correct.

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.

3. Do not use the leaking batteries.

10-1. CAUTIONS ON TROUBLESHOOTING

1. Before troubleshooting, check the following

1) Check the power supply voltage.

2) Check the indoor/outdoor connecting wire for miswiring.

2. Take care of the following during servicing

1) Before servicing the air conditioner, be sure to turn OFF the main unit first with the remote controller, and 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 P.C. board.

3) When removing the 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.

3. Troubleshooting procedure

1) 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 OPERATION INDICATOR lamp is flashing ON and OFF before starting serv-

ice work.

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

3) When the P.C. board seems to be defective, check the copper foil pattern for disconnection and the components for

bursting and discoloration.

4) When troubleshooting, Refer to 10-2, 10-3 and 10-4.

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.

Press RESET button with a thin instrument, and

then use the remote controller.

Remove the front lid and insert batteries.

Then reattach the front lid.

Lead wiring

Housing point

<Incorrect>

<Correct>

TROUBLESHOOTING

10

Insert the negative pole of the
batteries first. Check if the polarity
of the batteries is correct.

RESET button

MSZ-GE22VA MSZ-GE22VAD MSZ-GE25VA MSZ-GE25VAD MSZ-GE33VA
MSZ-GE35VA MSZ-GE35VA2 MSZ-GE35VAD MSZ-GE42VA MSZ-GE42VAD
MSZ-GE50VA MSZ-GE50VA2 MSZ-GE50VAD

MSZ-GE22VA MSZ-GE22VAD MSZ-GE25VA MSZ-GE25VAD MSZ-GE33VA
MSZ-GE35VA MSZ-GE35VA2 MSZ-GE35VAD MSZ-GE42VA MSZ-GE42VAD
MSZ-GE50VA MSZ-GE50VA2 MSZ-GE50VAD MSZ-GE60VA MSZ-GE60VAD
MSZ-GE71VA MSZ-GE71VAD MSZ-GE80VA MSZ-GE80VA2 MSZ-GE80VAD

MSZ-GE60VA MSZ-GE60VAD MSZ-GE71VA MSZ-GE71VAD
MSZ-GE80VA MSZ-GE80VA2 MSZ-GE80VAD

OBH531E

26

1

Lock

2

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 to .

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

In procedure lock the
stoppers until they click
into place.

MSZ-GE60VA MSZ-GE71VA MSZ-GE80VA MSZ-GE80VA2

Lock

Check the upper and the lower vane.

MSZ-GE22VA MSZ-GE22VAD MSZ-GE25VA MSZ-GE25VAD MSZ-GE33VA
MSZ-GE35VA MSZ-GE35VA2 MSZ-GE35VAD MSZ-GE42VA MSZ-GE42VAD
MSZ-GE50VA MSZ-GE50VA2 MSZ-GE50VAD

MSZ-GE60VAD MSZ-GE71VAD MSZ-GE80VAD

Lock

Check the upper and the lower vane.

OBH531E

27

10-2. 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 (10-4.) disappears, the memorized failure details
can be recalled.

This mode is very useful when the unit needs to be repaired for the abnormality which does not recur.

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

Does upper lamp of OPERATION INDICATOR
lamp on the indoor unit blink at the interval of 0.5
seconds?
Blinks: Either indoor or outdoor unit is abnormal.

Beep is emitted at the same timing as the
blinking of upper lamp of OPERATION
INDICATOR lamp. 2

Indoor unit is normal.
But the outdoor unit might be abnormal because there are
some abnormalities that cannot be recalled with this way.
Check if outdoor unit is abnormal according to the detailed
outdoor unit failure mode recall function.

No

Yes

The cause of abnormality cannot be found because the abnormality does not recur.

Setting up the failure mode recall function

Turn ON the power supply.
<Preparation of the remote controller>

While pressing both OPERATION SELECT button and TOO COOL button (MSZ-

GE22/25/33/35/42/50)/TEMP

button (MSZ-GE60/71/80) on the remote control-

ler at the same time, press RESET button.

First, release RESET button.

Hold down the other two buttons for another 3 seconds. Make sure that the indica-

tors on the LCD screen shown in the right fi gure are all displayed. Then release
the buttons.

Press OPERATE/STOP (ON/OFF) button of the remote controller (the set tempera­ture is displayed) with the remote controller headed towards the indoor unit.

1

Judgment of indoor/outdoor abnormality

Before blinking, does upper lamp of
OPERATION INDICATOR lamp stay ON for 3
seconds?
Stays ON for 3 seconds (without beep):

The outdoor unit is abnormal.

The indoor unit is abnormal.
Check the blinking pattern, and identify the abnormal point by referring to the
indoor unit failure mode table. (Refer to 10-2.2)
Make sure to check at least two consecutive blinking cycles.

2

Releasing the failure mode recall function

Release the failure mode recall function by the following procedures.
Turn OFF the power supply and turn it ON again.
Press RESET button of the remote controller.

The outdoor unit is abnormal.
Check the blinking pattern, and identify the abnormal point by referring
to the outdoor unit failure mode table. (Refer to outdoor unit service
manual.)
Make sure to check at least two consecutive blinking cycles.

3

Repair the failure parts.

Deleting the memorized abnormal condition

After repairing the unit, recall the failure mode again according to "Setting up the failure mode recall

function" mentioned above.
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 EMERGENCY OPERATION switch so that the memorized abnormal condition is deleted.
Release the failure mode recall function according to "Releasing the failure mode recall function"

mentioned above.

Operational procedure

Yes
(Blinks)

No
(OFF)

NOTE: 1. Make sure to release the failure mode recall function after it is 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.

2. Blinking pattern when the indoor unit is abnormal:

3.Blinking pattern when the outdoor unit is abnormal:

ON

OFF

Beeps

Repeated cycle Repeated cycle

ON

OFF

No beep Beeps

Repeated cycle

2.5-second OFF

Blinking at 0.5­second interval

2.5-second OFF 3-second ON

Blinking at 0.5­second interval

Beeps

Repeated cycle

2.5-second OFF

Blinking at 0.5­second interval

No beep Beeps

Repeated cycle

2.5-second OFF 3-second ON

Blinking at 0.5-

second interval

Repeated cycle

Beeps

1 Regardless of normal or abnormal condition, a short beep is

emitted once the signal is received.

MSZ-GE22/25/33/35/42/50VA
MSZ-GE35/50VA2
MSZ-GE22/25/35/42/50VAD

MSZ-GE60/71/80VA
MSZ-GE80VA2

MSZ-GE60/71/80VAD

OBH531E

28

2. Indoor unit failure mode table

Upper lamp of OP-

ERATION INDICA-

TOR lamp

Abnormal point

(Failure mode)

Condition Remedy

Not lighted Normal — —

1-time fl ash every

0.5-second

Room temperature
thermistor

The room temperature thermistor short or
open circuit is detected every 8 seconds dur­ing operation.

Refer to the characteristics of the room temperature
thermistor (10-7.2,3.).

2-time fl ash

2.5-second OFF

Indoor coil
thermistor

The indoor coil thermistor short or open circuit
is detected every 8 seconds during operation.

Refer to the characteristics of the main indoor coil ther­mistor, the sub indoor coil thermistor (10-7.2,3.).

3-time fl ash

2.5-second OFF

Serial signal

The serial signal from outdoor unit is not re­ceived for a maximum of 6 minutes.

Refer to 10-6.

"How to check miswiring and serial

signal error".

11-time fl ash

2.5-second OFF

Indoor fan motor

The rotational frequency feedback signal is not
emitted for the 12 seconds after the indoor fan
operation.

Refer to 10-6. "Check of indoor fan motor".

12-time fl ash

2.5-second OFF

Indoor control
system

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.

NOTE: Blinking patterns of this mode differ from the ones of TROUBLESHOOTING CHECK TABLE (10-4.).

OBH531E

29

10-3. INSTRUCTION OF TROUBLESHOOTING

Indoor unit oper­ates.
Outdoor unit
does not operate.

If blinking of OPERATION INDI­CATOR lamp cannot be checked,
it can be checked with failure
mode recall function.

Indoor unit operates.
Outdoor unit does
not operate normally.

Indoor unit does
not receive the
signal from re­mote controller.

OPERATION INDICATOR
lamp on the indoor unit is
fl ashing ON and OFF.

Outdoor unit
operates only
in Test Run
operation.

Outdoor unit
does not
operate even
in Test Run
operation.

Unit does not
operate nor­mal operation
in COOL or
HEAT mode.

Indoor unit
operates, when
EMERGENCY
OPERATION
switch is pressed.

Indoor unit does
not operate, when
EMERGENCY
OPERATION
switch is pressed.

Check room
temperature
thermistor.
Refer to 10-7.
"Test point
diagram and
voltage".

Refer to "How
to check
inverter/com­pressor".

Refer to
"Check of R.V.
coil".

Refer to 10-6.
"Check of remote
controller and
indoor electronic
control P.C. board".

1. Check indoor/out­door connecting wire.
(Check if the power is
supplied to the indoor
unit.)

2. Refer to 10-6. "Check
of indoor P.C. board
and indoor fan motor".

Upper lamp
Flash on and
off at 0.5-sec­ond intervals
Cause:
Indoor/Outdoor
unit

• Miswiring or
trouble of
serial signal

Upper lamp
2-time fl ash
Cause:
Indoor unit

• Trouble
of room
temperature
/ indoor coil
thermistor

Upper lamp
3-time fl ash
Cause:
Indoor unit

• Trouble of
indoor fan
motor

Upper lamp
4-time fl ash
Cause:
Indoor unit

• Trouble
of indoor
unit control
system

Upper lamp
5-time fl ash
Cause:
Outdoor unit

• Outdoor
power
system
abnormality

Upper lamp
6-time fl ash
Cause:
Outdoor unit

• Trouble of
thermistor in
outdoor unit

Upper lamp
7-time fl ash
Cause:
Outdoor unit

• Trouble of
outdoor con­trol system

Upper lamp
14-time fl ash
/ or more (VAD)
Cause:
Outdoor unit

• Other ab­normality

Start

Refer to
10-6. "How
to check mis­wiring and
serial signal
error".

Check room
temperature
thermistor
and indoor
coil thermis­tor. Refer to
10-7. "Test
point diagram
and voltage".

Refer to
10-6.
"Check of
indoor fan
motor".

Replace the
indoor elec­tronic control
P.C. board.

Refer to
"How to
check
inverter/com­pressor".

Refer to
"Check of
outdoor ther­mistors".

Replace the
inverter P.C.
board or
the outdoor
electronic
control P.C.
board.

Check "Flow
chart of the
detailed
outdoor unit
failure mode
recall func­tion."

"Test Run operation" means the

operation within 30 minutes af­ter EMERGENCY OPERATION
switch is pressed.

Refer to outdoor unit service manual.

All lamps
Flash on and
off at 0.5-sec­ond intervals
Cause:
Indoor unit

• The horizon­tal vane is
not installed
correctly.

Refer to
10-6.
"Check of in­stallation of
the horizon­tal vane".

OBH531E

30

10-4. TROUBLESHOOTING CHECK TABLE

Before taking measures, make sure that the symptom reappears for accurate troubleshooting.
When the indoor unit has started operation and detected an abnormality of the following condition (the first detection after the
power ON), the indoor fan motor turns OFF and OPERATION INDICATOR lamp flashes.

OPERATION INDICATOR

Lighted
Blinking
Not lighted

No.

Abnormal

point

Operation indicator lamp Symptom Condition Remedy

1

Miswiring
or serial
signal

Upper lamp fl ashes.

0.5-second ON

0.5-second OFF

Indoor unit and
outdoor unit do
not operate.

The serial signal from the outdoor unit is not
received for 6 minutes.

Refer to 10-6. "How to check
miswiring and serial signal er­ror".

•

2

Indoor coil
thermistor

Upper lamp fl ashes.
2-time fl ash

2.5-second OFF

The indoor coil or the room temperature ther­mistor is short or open circuit.

Refer to the characteristics of
indoor coil thermistor, and the
room temperature thermistor
(10-7.2,3.).

•

Room tem­perature
thermistor

3

Indoor fan
motor

Upper lamp fl ashes.
3-time fl ash

2.5-second OFF

The rotational frequency feedback signal is
not emitted during the indoor fan operation.

Refer to 10-6. "Check of in­door fan motor".

•

4

Indoor con­trol system

Upper lamp fl ashes.
4-time fl ash

2.5-second OFF

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.

•

5

Outdoor
power sys­tem

Upper lamp fl ashes.
5-time fl ash

2.5-second OFF

It consecutively occurs 3 times that the com­pressor stops for overcurrent protection or
start-up failure protection within 1 minute after
start-up.

Refer to "How to check of in­verter/compressor".
Refer to outdoor unit service
manual.
Check the stop valve.

•

•

6

Outdoor
thermistors

Upper lamp fl ashes.
6-time fl ash

2.5-second OFF

The outdoor thermistors short or open circuit
during the compressor operation.

Refer to "Check of outdoor
thermistor".
Refer to outdoor unit service
manual.

•

7

Outdoor
control sys­tem

Upper lamp fl ashes.
7-time fl ash

2.5-second OFF

It cannot properly read data in the nonvolatile
memory of the inverter P.C. board or the out­door electronic control P.C. board.

Replace the inverter P.C. board
or the outdoor electronic control
P.C. board.
Refer to outdoor unit service
manual.

•

8

Other ab­normality

Upper lamp fl ashes.
14-time fl ash / or more (VAD)

2.5-second OFF

An abnormality other than above mentioned
is detected.

Check the stop valve.
Check the 4-way valve. (VAD)

Check the abnormality in detail
using the failure mode recall
function for outdoor unit.

•

•

•

9

Outdoor
control sys­tem

Upper lamp lights up

Outdoor unit
does not oper­ate

It cannot properly read data in the nonvolatile
memory of the inverter P.C. board or the out­door electronic control P.C. board.

Check the blinking pattern of
the LED on the inverter P.C.
board or the outdoor electronic
control P.C. board.

•

OBH531E

31

OPERATION INDICATOR

No.

Abnormal

point

Operation indicator lamp Symptom Condition Remedy

1

Attachment
of the hori­zontal vane

All lamps fl ash at the same time.

0.5-second ON

0.5-second OFF

Indoor unit and
outdoor unit do
not operate.

The electricity is not conducted to the inter­lock switch (Fan) of the horizontal vane.

Refer to 10-6. "Check of
installation of the horizontal
vane".

•

OPERATION INDICATOR

No.

Abnormal

point

Operation indicator lamp Symptom Condition Remedy

1

MXZ type

Operation
mode
setting

Upper lamp lights and lower lamp fl ashes.

2.5-second OFF

Outdoor unit
operates but
indoor unit does
not operate.

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 fi rst has
the priority.

Unify the operation mode.
Refer to outdoor unit service
manual.

•

10-5. TROUBLE CRITERION OF MAIN PARTS

MSZ-GE22VA MSZ-GE22VAD MSZ-GE25VA MSZ-GE25VAD MSZ-GE33VA
MSZ-GE35VA MSZ-GE35VA2 MSZ-GE35VAD MSZ-GE42VA MSZ-GE42VAD
MSZ-GE50VA MSZ-GE50VA2 MSZ-GE50VAD MSZ-GE60VA MSZ-GE60VAD

MSZ-GE71VA MSZ-GE71VAD MSZ-GE80VA MSZ-GE80VA2 MSZ-GE80VAD

Part name Check method and criterion Figure

Room temperature
thermistor (RT11)
Indoor coil thermistor
(RT12, RT13)

Measure the resistance with a tester.

Refer to 10-7. "Test point diagram and voltage", "2 or 3. Indoor electronic
control P.C. board", for the chart of thermistor.

Indoor fan motor (MF) Check 10-6.

MSZ-GE22/25/33/35/42/50

Vane motor (MV)

Measure the resistance between the terminals with a tester.
(Temperature: 10 - 30°C)

Color of the lead wire Normal

RED - BLK 223 - 268 Ω

MSZ-GE60/71/80

Horizontal vane motor
(MV1)
Vertical vane motor
(MV2)

Measure the resistance between the terminals with a tester.

(Temperature: 10 - 30°C)

Color of the lead wire Normal

Horizontal vane motor (MV1)

RED-BLK

313 ~ 375 Ω

Vertical vane motor (MV2) 268 ~ 322 Ω

BLK

BLK
RED

BLK

BLK

ROTOR

BLK

BLK
RED

BLK

BLK

ROTOR

OBH531E

32

A Check of indoor fan motor

10-6. TROUBLESHOOTING FLOW

The indoor fan motor error has occurred, and the indoor fan does not operate.

Turn OFF the power supply.

Is there any foreign matter that interferes
the rotation of the line fl ow fan?

Yes

No

Remove the foreign matter and
adjust the line fl ow fan.

Pay enough attention to the high voltage on the fan motor connector CN211.

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, turn OFF the power supply and turn it
ON again, then measure the voltage.
<Indoor power P.C. board>

1. Measure the voltage between CN211 (+) and (–).

2. Measure the voltage between CN211 (+) and (–).
<Indoor electronic control P.C. board>

3. Measure the voltage between CN10A (+) and JPG (GND)(–).

If more than 12 seconds passes after EMERGENCY OPERATION switch

is pressed, the voltage measured at 2. above goes 0 VDC although the
indoor P.C. board is normal.

Does the voltage between CN211
(+) and (–) on the power P.C. board
rise to the range of 3 to 6 VDC within
12 seconds after EMERGENCY
OPERATION switch is pressed?

Replace the indoor fan motor.

Yes

No

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

(+) and (–) while the fan motor is

rotating.

Replace the indoor power
P.C. board and the indoor
terminal P.C. board.

Is it unchanged holding
0 or 15 V DC?

No

(Changed)
Yes
(Unchanged)

Measure the voltage CN10A (+)
and JPG (GND)(–) on the indoor
electronic control P.C board when
the fan motor is rotaring.

Replace the indoor fan motor.

Is there 325 VDC
between CN211 (+)
and (–) ?

Yes

Does the voltage between CN10A
(+) and JPG (GND)(–) on the indoor
electronic control P.C. board fall to
2 V or less within 12 seconds after
EMERGENCY OPERATION switch is
pressed?

Replace the indoor electronic
control P.C. board.

No

Yes

Replace the indoor power P.C.
board and the indoor terminal P.C.
board.

Is it unchanged holding
0 or 5 VDC?

No
(Changed)

Yes
(Unchanged)

Replace the indoor
electronic control P.C.
board.

No

MSZ-GE22VA MSZ-GE22VAD MSZ-GE25VA MSZ-GE25VAD MSZ-GE33VA
MSZ-GE35VA MSZ-GE35VA2 MSZ-GE35VAD MSZ-GE42VA MSZ-GE42VAD
MSZ-GE50VA MSZ-GE50VA2 MSZ-GE50VAD

OBH531E

33

The indoor fan motor error has occurred, and the indoor fan does not operate.

Turn OFF the power supply.

Is there any foreign matter that interferes
the rotation of the line fl ow fan?

Yes

No

Remove the foreign matter and
adjust the line fl ow fan.

Pay enough attention to the high voltage on the fan motor connector CN211.

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, turn OFF the power supply and turn it
ON again, then measure the voltage.
<Indoor electronic control P.C. board>

1. Measure the voltage between CN211 (+) and (–).

2. Measure the voltage between CN211 (+) and (–).

If more than 12 seconds passes after EMERGENCY OPERATION switch

is pressed, the voltage measured at 2. above goes 0 V DC although the
indoor P.C. board is normal.

Does the voltage between CN211
(+) and (–) on the indoor electronic
control P.C. board rise to the range
of 3 to 6 VDC within 12 seconds after
EMERGENCY OPERATION switch is
pressed?

Replace the indoor fan motor.

Yes

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

(+) and (–) while the fan motor is

rotating.

Replace the indoor electronic control P.C.
board and the indoor terminal P.C. board.

Is it unchanged holding
0 or 15 VDC?

No
(Changed)

Yes
(Unchanged)

Replace the indoor fan motor.

Is there 325 VDC
between CN211 (+)
and (–) ?

Yes

Replace the indoor
electronic control P.C.
board.

No

MSZ-GE60VA MSZ-GE60VAD MSZ-GE71VA MSZ-GE71VAD
MSZ-GE80VA MSZ-GE80VA2 MSZ-GE80VAD

No

Replace the indoor electronic control
P.C. board.

OBH531E

34

B Check of remote controller and indoor electronic control P.C. board

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

Does the unit operate with the remote
controller?

OK

Yes

No
(Not clear)

Replace the batteries. (Refer to 10-1.4.)

Press OPERATE/STOP (ON/OFF)

button on the remote controller.

Is LCD display on the remote controller
visible?

Remove the batteries, then set them back
and press RESET button. (Refer to 10-1.4.)
Check if the unit operates with the remote
controller.

Yes

No

Turn ON a radio to AM and press
OPERATE/STOP (ON/OFF) button on
the remote controller.

1

Is noise heard from radio?

Yes

No

Replace the remote controller.

Are there any fl uorescent lights of
inverter or rapid-start type within the
range of 1 m? 2

No

Reinstall the unit away from lights.
Attach a fi lter on receiving part.

•

•

Replace the indoor electronic control
P.C. board. (Including the receiver)

MSZ-GE22VA MSZ-GE22VAD MSZ-GE25VA MSZ-GE25VAD MSZ-GE33VA
MSZ-GE35VA MSZ-GE35VA2 MSZ-GE35VAD MSZ-GE42VA MSZ-GE42VAD
MSZ-GE50VA MSZ-GE50VA2 MSZ-GE50VAD

MSZ-GE60VA MSZ-GE60VAD MSZ-GE71VA MSZ-GE71VAD
MSZ-GE80VA MSZ-GE80VA2 MSZ-GE80VAD

Does the unit operate with the remote
controller?

OK

Yes

No
(Not clear)

Replace the batteries. (Refer to 10-1.4.)

Press OPERATE/STOP (ON/OFF)

button on the remote controller.

Is LCD display on the remote controller
visible?

Remove the batteries, then set them back
and press RESET button. (Refer to 10-1.4.)
Check if the unit operates with the remote
controller.

Yes

No

Turn ON a radio to AM and press OP­ERATE/STOP (ON/OFF) button on the
remote controller. 1

Is noise heard from radio?

Yes

No

Replace the remote controller.

Are there any fl uorescent lights of
inverter or rapid-start type within the
range of 1 m? 2

Yes

No

Reinstall the unit away from lights.
Attach a fi lter on receiving part.

•

•

Measure the voltage between power
monitor receiver SW P.C. board connec­tor CN20A No.2(+) and No.3(-) when the
remote controller button is pressed.

Is the voltage approximately 4 V DC?

No

Yes

Replace indoor electronic control P.C.
board.

Replace power monitor receiver SW P.C. board.

1 Look at the image of the signal transmitting section of

the remote controller through the monitor of a digital
camera or a camera phone. It is normal if the LED of
the signal transmitting section lights up when the OP­ERATE/STOP (ON/OFF) button on the remote control­ler is pressed. However, it may be diffi cult to see the
illuminated LED of the signal transmitting section with a
smartphone camera.

2 If the inverter fl uorescent light is turned on when the

room is cool, the unit may have diffi culty receiving the
signal from the remote controller or may not be able to
operate with it; if the inverter fl uorescent light is turned
on when the room is warm, the unit may be able to
operate with the remote controller.

Yes

OBH531E

35

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

Turn OFF the power supply.
Remove indoor fan motor connector CN211
from indoor power P.C. board and vane
motor connector CN151 from the indoor
electronic control P.C. board and turn ON
the power supply.

Does the unit operate with the remote
controller?
Does OPERATION INDICATOR lamp light
up by pressing EMERGENCY OPERATION
switch?

Yes

No

Measure the resistance of indoor fan
motor.
Refer to 10-5.

Short circuit:
Replace the indoor fan motor.

Turn OFF the power supply.
Check both “parts side” and “pattern
side” of the indoor terminal P.C.
board visually.

Replace the varistor (NR11)
and fuse (F11). 3

Is the varistor (NR11)
burnt and the fuse (F11)
blown?

No

No

Yes

Yes

Be sure to check both the fuse
and the varistor in any case.

Is the fuse (F11) blown
only?

Measure the resistance between
CN211 (+) and (-) of indoor fan
motor connector. 1, 2

Yes

Is the resistance 1MΩ or more?

Replace the fuse (F11) and the
indoor fan motor. 3

No

Replace the fuse (F11). 3

Measure the resistance of the vane
motor coil.
Refer to 10-5.

Short circuit:
Replace the vane motor and the indoor
electronic control P.C. board.

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

2. Connect "+" of the tester to fan motor connector's
lead wire, and “-” to lead wire, otherwise the

resistance cannot be measured properly.

3. Please replace the fuse after removing the indoor

terminal P.C. board from the electrical box.

Indoor electronic control
P.C. board

JPG (GND)

CN10A

12 VDC

5 VDC

Indoor terminal
P.C. board

Indoor power P.C. board

Fuse (F11)

Varistor
(NR11)

CN211

R111 (MSZ-GE22/25/33/35)
L111 (MSZ-GE42/50)

Measure the resistance of resistor
(R111) on the indoor power P.C.
board (MSZ-GE22/25/33/35).
Measure the resistance of reactor
(L111) on the indoor power P.C.
board (MSZ-GE42/50).

No

Is the resistance of resistor (R111)
approximately 4 Ω (MSZ-GE22/25/33/35)?
Is the resistance of reactor (L111)
approximately 2.2 Ω (MSZ-GE42/50)?

No

Replace the indoor
power P.C. board, the
indoor terminal P.C.
board and the indoor fan
motor.

Replace the indoor electronic control P.C. board.

Is the approximately 5 VDC between
5 V (+) and JPG (GND) (-) of the
indoor electronic control P.C. board?
Is there approximately 9 V to 13 VDC
between 12 V (+) and JPG (GND) (-)
of the indoor electronic control P.C.
board?

Are connector CN10A on the
indoor electronic control P.C.
board or lead wires discon­nected?

Replace the indoor fan motor.

Yes

Connect the connector or repair discon­nection.

Yes

No

Yes

MSZ-GE22VA MSZ-GE22VAD MSZ-GE25VA MSZ-GE25VAD MSZ-GE33VA
MSZ-GE35VA MSZ-GE35VA2 MSZ-GE35VAD MSZ-GE42VA MSZ-GE42VAD
MSZ-GE50VA MSZ-GE50VA2 MSZ-GE50VAD

OBH531E

36

CN211

R111

Indoor electronic
control P.C.Board

Indoor terminal
P.C. board

Fuse
(F11)

Varistor
(NR11)

Yes

No

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

2. Connect "+" of the tester to fan motor connector's lead
wire, and "-" to lead wire, otherwise the resistance cannot be
measured properly.

3. Please replace the fuse after removing the indoor terminal
P.C. board from the electrical box.

Yes

No

Does the unit operate with the remote controller?
Does OPERATION INDICATOR lamp light up by
pressing EMERGENCY

OPERATION switch?

Turn OFF the power supply.
Remove indoor fan motor connector CN211 and vane motor
connector CN151 and CN152 from the indoor electronic
control P.C. board and turn ON the power supply.

Measure the resistance of the horizontal vane
motor coil.
Refer to 10-5.

Measure the resistance between CN211
and of the indoor fan motor connector.

Short circuit:
Replace the indoor fan motor.

Short circuit:
Replace the horizontal vane motor and the indoor
electronic control P.C. board.

Turn OFF the power supply.
Check both “parts side” and “pattern
side” of the indoor electronic control P.C.
board visually.

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

Are the varistor (NR11) burnt
and the fuse (F11) blown?

Be sure to check both the fuse
and the varistor in any case.

No

Yes

No

Is the fuse (F11) blown only?

Yes

No

Is the resistance 1MΩ
or more?

Measure the resistance between
CN211 (+) and (-) of the indoor
fan motor connector. 1, 2

Replace the fuse (F11). 3

Replace the fuse (F11) and the indoor fan motor. 3

Is the resistance

approximately 4Ω?

Measure the resistance of cement
resistor R111 on the indoor electronic
control P.C. board.

Replace the indoor electronic control P.C. board.

Replace the indoor electronic control P.C. board
and the indoor fan motor.

Yes

MSZ-GE60VA MSZ-GE60VAD MSZ-GE71VA MSZ-GE71VAD
MSZ-GE80VA MSZ-GE80VA2 MSZ-GE80VAD

OBH531E

37

D How to check miswiring and serial signal error

Turn OFF inverter-controlled lighting
equipment.
Turn OFF the power supply and then
turn ON again.
Press EMERGENCY OPERATION
switch.

•

•

•

A

Is serial signal
error indicated
6 minutes later?

B

Yes

Reinstall
either the unit
or the light
away from
each other.
Attach a fi lter
on remote
control receiv­ing section
of the indoor
unit.

•

•

No

Replace the indoor power
P.C. board and the indoor
terminal P.C. board

Turn OFF the power supply.

Is there rated voltage in the power supply?

Yes

No

Turn ON the power supply.

Check the power supply.

Is there rated voltage between the outdoor terminal block S1 and S2?

No

Check the wiring.

Press EMERGENCY OPERATION switch once.

Does the upper lamp of OPERATION INDICA­TOR lamp light up? <Confi rmation of the power
to the indoor unit>

Yes

No

Is serial signal error indicated 6 minutes later?

Yes

No

Is there any miswiring,
poor contact, or wire
disconnection of the
indoor/outdoor connect­ing wire?

Yes

Correct them.

No

A

Turn OFF the power supply.
Check once more if the indoor/outdoor
connecting wire is not miswiring.
Bridge the outdoor terminal block S2 and
S3.

1

B

1. Miswiring may damage indoor electronic control P.C.
board during the operation.
Be sure to confi rm the wiring is correct before the opera-
tion starts.

Turn ON the power supply.

Does the LED on the inverter P.C. board or the outdoor electronic control P.C.
board repeat "3.6-second-OFF and 0.8-second-ON quick blinking"? 3

Yes

No
(Lighted
or not
lighted)

Replace the inverter P.C. board or the outdoor
electronic control P.C. board.

2

2. Be careful of the residual voltage of smoothing
capacitor.

Yes

Check the wiring.
If there are any error of the indoor/outdoor connecting wire:
such as the damage of the wire, intermediate connection,
and/or poor contact to the terminal block, replace the indoor/
outdoor connecting wire.

No

Is there 2 VDC or less between CN10A (+)
and JPG (GND)(-) on the indoor electronic
control P.C. board?

No

Yes

Yes

3. Be sure to check this within 3 minutes after turning ON.
After 3 minutes, LED blinks 6 times. Even when the
inverter P.C. board or the outdoor electronic control P.C.
board is normal, LED blinks 6 times after 3 minutes.

(Except for outdoor unit of multi system type)

Is there 2 VDC or less between
CN10A (+) and JPG (GND)(-) on
the indoor electronic control P.C.
board?

Is there 2 VDC or less between
CN10A (+) and JPG (GND)(-) on
the indoor electronic control P.C.
board?

Replace the indoor elec­tronic control P.C. board.

No Yes No

Yes

Is the bus-bar voltage of the inverter P.C. board or the outdoor electronic control P.C. board normal?
(Refer to "TEST POINT DIAGRAM AND VOLTAGE" of the outdoor unit.)

No

Yes

Check of power supply.

Turn OFF the power supply.
Remove the bridge between the outdoor terminal block S2 and S3.
Turn ON the power supply.

Yes

No

MSZ-GE22VA MSZ-GE22VAD MSZ-GE25VA MSZ-GE25VAD MSZ-GE33VA
MSZ-GE35VA MSZ-GE35VA2 MSZ-GE35VAD MSZ-GE42VA MSZ-GE42VAD
MSZ-GE50VA MSZ-GE50VA2 MSZ-GE50VAD

Is there rated voltage between the indoor terminal block S1 and S2?
<Confi rmation of power voltage>

Is there amplitude of 10 to 20 VDC between the indoor terminal block
S2 and S3? <Confi rmation of serial signal>

OBH531E

38

MSZ-GE60VA MSZ-GE60VAD MSZ-GE71VA MSZ-GE71VAD
MSZ-GE80VA MSZ-GE80VA2 MSZ-GE80VAD

Turn OFF inverter-controlled lighting
equipment.
Turn OFF the power supply and then
turn ON again.
Press EMERGENCY OPERATION
switch.

•

•

•

A

Is serial signal
error indicated 6
minutes later?

B

Yes

Reinstall
either the unit
or the light
away from
each other.
Attach a fi lter
on remote
control receiv­ing section
of the indoor
unit.

•

•

No

Turn OFF the power supply.

Is there rated voltage in the power supply?

Yes

No

Turn ON the power supply.

Check the power supply.

Is there rated voltage between outdoor terminal block S1 and S2?

No

Check the wiring.

Press EMERGENCY OPERATION switch once.

Does the upper lamp of OPERATION INDICA­TOR lamp light up? <Confi rmation of the power
to the indoor unit>

Yes

No

Is serial signal error indicated 6 minutes
later?

Yes

No

Is there any miswiring,
poor contact, or wire
disconnection of the
indoor/outdoor connect­ing wire?

Yes

Correct them.

No

A

Turn OFF the power supply.
Check once more if the indoor/outdoor
connecting wire is not miswiring.
Short-circuit outdoor terminal block S2
and S3.

1

B

1. Miswiring may damage indoor electronic control P.C.
board during the operation.
Be sure to confi rm the wiring is correct before the opera-
tion starts.

Turn ON the power supply.

Does the LED on the inverter P.C. board or the outdoor electronic control P.C.
board repeat "3.6-second-OFF and 0.8-second-ON quick blinking"? 3

Yes

No
(Lighted
or not
lighted)

Replace the inverter P.C. board or the outdoor
electronic control P.C. board. 2

2. Be careful of the residual voltage of smoothing
capacitor.

Turn OFF the power supply.
Remove the short-circuit between outdoor terminal block S2 and S3.

Yes

3. Be sure to check this within 3 minutes after turning ON.
After 3 minutes, LED blinks 6 times. Even when the
inverter P.C. board or the outdoor electronic control P.C.
board is normal, LED blinks 6 times after 3 minutes.

(Except for outdoor unit of multi system type)

Is the bus-bar voltage of the inverter P.C. board or the outdoor electronic control P.C. board normal?
(Refer to "TEST POINT DIAGRAM AND VOLTAGE" of the outdoor unit.)

No

Yes

Replace the indoor electronic control P.C. board.

OBH531E

39

E Check of installation of the horizontal vane

Is the stopper of the horizontal vane
locked to the indoor unit correctly?

Yes

No

Re-lock the stopper of the hori­zontal vane to the indoor unit.
(Refer to 10-1.5.)

Turn ON the
power supply.

Are all lamps flashing?

Yes

No

Turn OFF the power supply.

To check the continuity of the interlock
switch (Fan), measure the resistance of
connector

- connected to CN1R1 on

the indoor electronic control P.C. board.

Is there resistance 0 Ω?

Yes

No( )

Replace the interlock switch (Fan).

Replace the indoor electronic
control P.C. board.

OK

Turn OFF the power supply.

OBH531E

40

F Electromagnetic noise enters into TV sets or radios

Yes

Is the unit earthed?

No

Earth the unit.

Yes

Is the distance between the antennas
and the indoor unit within 3 m, or is the
distance between the antennas and the
outdoor unit within 3 m?

No

Extend the distance between the antennas and
the indoor unit, and/or the antennas and the
outdoor unit.

Is the distance between the TV sets or
radios and the indoor unit within 1 m, or
is the distance between the TV sets or
radios and the outdoor unit within 3 m?

Yes

Extend the distance between the TV sets and/or
radios and the indoor unit, or the TV sets or
radios and the outdoor unit.

Are the antennas damaged?
Is the coaxial cable damaged?
Is there any poor contact in the anten­na wiring?

Yes

No

No

Replace or repair the antenna.
Replace or repair the coaxial cable.

Is the indoor/outdoor connecting wire
of the air conditioner and the wiring of
the antennas close?

Yes

Extend the distance between the indoor/outdoor
connecting wire of the air conditioner and the wir­ing of the antennas.

No

Even if all of the above conditions are fulfi lled, the electromagnetic noise may enter, depending on the electric fi eld strength
or the installation condition (combination of specifi c conditions such as antennas or wiring).
Check the following 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, earth wire, antennas, wiring from antennas, receiver

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

6. Presence or absence of amplifi er 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.

OBH531E

41

1. Indoor power P.C. board, Indoor terminal P.C. board

MSZ-GE22VA MSZ-GE22VAD MSZ-GE25VA MSZ-GE25VAD MSZ-GE33VA
MSZ-GE35VA MSZ-GE35VA2 MSZ-GE35VAD

10-7. TEST POINT DIAGRAM AND VOLTAGE

Indoor terminal P.C. board

Indoor power P.C. board

Please replace the fuse after removing the indoor terminal P.C. board from the electrical box.

Fuse (F11)( )

Varistor (NR11)

Terminal
block

Connector to indoor electronic
control P.C. board (CN20A)

5 VDC

12 VDC GND

Resistor (R111)

Indoor fan motor
(CN211)

325 VDC
(–) GND (high-

voltage DC)
15 VDC
(+)3-6 VDC
(+)0 or 15 VDC

MSZ-GE42VA MSZ-GE42VAD MSZ-GE50VA MSZ-GE50VA2 MSZ-GE50VAD

Indoor terminal P.C. board Indoor power P.C. board

Please replace the fuse after removing the indoor terminal P.C. board from the electrical box.

Fuse (F11)( )

Varistor (NR11)

Terminal
block

Connector to indoor electronic
control P.C. board (CN20A)

5 VDC

12 VDC GND

Reactor (L111)

Indoor fan motor
(CN211)

325 VDC
(–) GND (high-

voltage DC)
15 VDC
(+)3-6 VDC
(+)0 or 15 VDC

OBH531E

42

Room temperature thermistor (RT11)
Indoor coil thermistor (RT12, RT13)

Temperature (°C)

Resistance (kΩ)

Timer short mode point
JPG JPS (Refer to 8-1.)

Room temperature thermistor RT11 (CN111)

Indoor coil thermistor RT12, RT13 (CN112)

Vane motor (CN151)

Connector to
Indoor power P.C. board
(CN10A)

12 VDC

5 VDC

To disable "Auto restart function",
solder the Jumper wire to JR07.
(Refer to 8-3.)

Emergency operation
switch (E.O. SW) (SW1)

2. Indoor electronic control P.C. board

MSZ-GE22VA MSZ-GE25VA MSZ-GE33VA MSZ-GE35VA MSZ-GE35VA2
MSZ-GE42VA MSZ-GE50VA MSZ-GE50VA2

GND

Interlock switch (FAN) (CN1R1)

Indoor electronic control P.C. board

MSZ-GE22VAD MSZ-GE25VAD MSZ-GE35VAD MSZ-GE42VAD MSZ-GE50VAD

Timer short mode point
JPG JPS
(Refer to 8-1.)

Room temperature thermistor RT11 (CN111)

Indoor coil thermistor RT12 (CN112)

Vane motor (CN151)

Connector to Indoor power
P.C. board (CN10A)

12 VDC

5 VDC

To disable "Auto restart function",
solder the Jumper wire to JR07.
(Refer to 8-3.)

Emergency operation
switch (E.O. SW) (SW1)

GND

Interlock switch (FAN)
(CN1R1)

OBH531E

43

JR24
JRRE
JRDFT
JR07
JRPRH
JR19
JRTU
JR01

Indoor terminal P.C. board Indoor electronic control P.C. board

Power monitor receiver SW P.C. board

Indoor fan motor
(CN211)

325 VDC
(–) GND

(high-voltage DC)

15 VDC
(+)3-6 VDC
(+)0 or 15 VDC

Resistor
(R 111)

Emergency
operation switch
(E.O. SW)
(SW1)

Timer short mode point
JPG JPS (Refer to 8-1.)

Varistor
(NR11)

Terminal
block

To disable "Auto restart function",
solder the Jumper wire to JR07.
(Refer to 8-3.)

Vane motor
(CN151, CN152)

5 VDC

12 VDC

Room temperature
thermistor RT11
(CN111)

Indoor coil thermistor
RT12, RT13
(CN112)

Interlock switch
(FAN) (CN1R1)

3. Indoor electronic control P.C. board, Indoor terminal P.C. board, Power monitor receiver SW P.C. board

MSZ-GE60VA MSZ-GE71VA MSZ-GE80VA MSZ-GE80VA2

Room temperature thermistor (RT11)
Indoor coil thermistor (RT12, RT13)

Temperature (°C)

Resistance (kΩ)

Fuse
(F11)( )

Please replace the fuse after removing the indoor terminal P.C. board from the electrical box.

CN20A

(–)
(+)

(Refer to 10-6.

.)

OBH531E

44

JR07

JR77

Indoor terminal P.C. board Indoor electronic control P.C. board

Power monitor receiver SW P.C. board

Indoor fan motor
(CN211)

325 VDC
(–) GND

(high-voltage DC)

15 VDC
(+)3-6 VDC
(+)0 or 15 VDC

Resistor
(R 111)

Emergency
operation switch
(E.O. SW)
(SW1)

Timer short mode point
JPG JPS (Refer to 8-1.)

Varistor
(NR11)

Terminal
block

To disable "Auto restart function",
cut the Jumper wire to JR77.
(Refer to 8-3.)

Vane motor
(CN151, CN152)

5 VDC

12 VDC

Room temperature
thermistor RT11
(CN111)

Indoor coil thermistor
RT12, RT13
(CN112)

Interlock switch
(FAN) (CN1R1)

MSZ-GE60VAD MSZ-GE71VAD MSZ-GE80VAD

Room temperature thermistor (RT11)
Indoor coil thermistor (RT12, RT13)

Temperature (°C)

Resistance (kΩ)

Fuse
(F11)( )

Please replace the fuse after removing the indoor terminal P.C. board from the electrical box.

CN20A

(–)
(+)

(Refer to 10-6.

.)

OBH531E

11-1. MSZ-GE22VA MSZ-GE22VAD MSZ-GE25VA MSZ-GE25VAD MSZ-GE33VA
MSZ-GE35VA MSZ-GE35VA2 MSZ-GE35VAD MSZ-GE42VA MSZ-GE42VAD
MSZ-GE50VA MSZ-GE50VA2 MSZ-GE50VAD

NOTE: Turn OFF power supply before disassembly.

OPERATING PROCEDURE PHOTOS

1. Removing the panel

(1) Remove the horizontal vanes.
(2) Remove the screw caps of the panel. Remove the

screws of the panel.
(3) Unhook the lower part ( ) of the panel.
(4) Hold the lower part of both ends of the panel and pull

it

slightly toward you, and then remove the panel by

pushing

it upward.

Photo 1

45

(1) Slide the sleeve and check if there is a locking lever or not. (2) The terminal with this connector has the

locking mechanism.

Slide the sleeve.
Pull the terminal while
pushing the locking
lever.

Hold the sleeve, and
pull out the terminal
slowly.

Connector

Sleeve

Locking lever

<"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.

Screws of the panel

Front panel

Horizontal vanes

A

DISASSEMBLY INSTRUCTIONS

11

OBH531E

OPERATING PROCEDURE PHOTOS

2. Removing the indoor electronic control P.C.
board and the room temperature thermistor

(1) Remove the panel (Refer to 1.) and the corner box.
(2) Remove the screw of the V.A. clamp. Remove the V.A.

clamp and the indoor/outdoor connecting wire.

(3) Open the indoor electronic control P.C. board holder (to

right side)

(4) Disconnect the following connectors:

<Indoor electronic control P.C. board>
CN112 (Indoor coil thermistor)
CN151 (Vane motor)
CN1R1 (Interlock switch)
CN10A (To the indoor power P.C. board)

(5) Unhook the catches of the indoor electronic control P.C.

board holder from the nozzle and the electrical box
(right side).

(6)

Remove the room temperature thermistor from the

hook of the indoor electronic control P.C. board holder.

(7) Open the back side of the indoor electronic control P.C.

board holder, and remove the indoor electronic con­trol P.C. board.

(8) Remove the room temperature thermistor from the

indoor electronic control P.C. board.

Photo 2

Photo 3

3. Remove the indoor power P.C. board, the indoor

terminal P.C. board, and the electrical box

(1) Remove the panel (Refer to 1.) and the corner box.
(2)

Remove the indoor/outdoor connecting wire. (Refer to 2.)

(3) Remove the earth wire connected to the indoor heat

exchanger from the electrical box.

(4) Unhook first the lower, then the upper catches of the

electrical box, and pull out the electrical box.

(5) Remove the screw of the electrical cover and remove

the electrical cover.

(6) Disconnect all the connectors on the indoor power P.C.

board and unhook all lead wires.

(7) Remove the screw of terminal block on the indoor ter-

minal P.C. board.

(8) Remove the indoor power P.C. board and the indoor

terminal P.C. board.

46

Lower catch

Indoor terminal
P.C. board

Terminal block

Indoor power
P.C. board

Catch of indoor elec­tronic control P.C.
board holder

Upper catch

V.A. clamp

Indoor electronic control
P.C. board holder

Screw of the
electrical cover

Catch of indoor electronic
control P.C. board holder

Electrical box

Earth wire

OBH531E

OPERATING PROCEDURE PHOTOS

4. Removing the nozzle assembly

(1) Remove the panel (Refer to 1.) and the corner box.
(2)

Remove the indoor/outdoor connecting wire. (Refer to 2.)

(3)

Remove the indoor electronic control P.C. board holder

(4) Disconnect the following connectors:

<Indoor electronic control P.C. board>
CN1R1 (Interlock switch)

(5) Pull out the drain hose from the nozzle assembly and

remove the nozzle assembly.

(6) Remove the interlock switch.

Photo 4

Photo 5

5. Removing the horizontal vane motor

(1) Remove the nozzle assembly. (Refer to 4.)
(2) Remove the screws of the horizontal vane motor unit.
(3) Disconnect the connector from the horizontal vane

motor.
(4) Remove the screws of the horizontal vane motor.
(5) Remove the horizontal vane motor from the horizontal

vane motor unit.

47

Screws of horizontal vane motor unit

Interlock switch

Screws of the interlock switch

OBH531E

OPERATING PROCEDURE PHOTOS

6. Removing the indoor fan motor, the indoor coil
thermistor, and the line flow fan

(1) Remove the panel (Refer to 1.) and the corner box.
(2) Remove the indoor electronic control P.C. board hold-

er, the electrical box and the nozzle assembly.
(3) Remove the screws fixing the motor bed.
(4) Loosen the screw fixing the line flow fan.
(5) Remove the motor bed together with fan motor and

motor band.
(6) Release the hooks of the motor band. Remove the

motor band. Pull out the indoor fan motor.
(8) Remove the indoor coil thermistor from the heat

exchanger.
( ) Install the indoor coil thermistor in its former position

when assembling it. (Photo 9)
(9) Remove the screws fixing the left side of the heat

exchanger.
(10) Lift the heat exchanger, and pull out the line flow fan

to the lower-left.

Photo 9

Photo 6

Photo 7

Photo 8

48

Screw of the line flow fan

Screws of the
motor bed

Screws of the
left side of the
heat exchanger

Motor band

Indoor coil
thermistor (sub)
RT13

Indoor coil
thermistor (main)
RT12

OBH531E

11-2. MSZ-GE60VA MSZ-GE60VAD MSZ-GE71VA MSZ-GE71VAD
MSZ-GE80VA MSZ-GE80VA2 MSZ-GE80VAD

NOTE: Turn OFF power supply before disassembly.

OPERATING PROCEDURE PHOTOS

1. Removing the panel

(1) Remove the horizontal vanes.
(2) Remove the screw caps of the panel. Remove the

screws of the panel.

(3) Hold the lower part of both ends of the panel and pull

it

slightly toward you, and then remove the panel by

pushing

it upward.

Photo 1

49

Screws of the panel

Front panel

Horizontal vanes

OBH531E

OPERATING PROCEDURE PHOTOS

2. Removing the indoor electronic control P.C.
board, the power monitor receiver SW P.C.
board and the indoor terminal P.C. board

(1) Remove the panel (Refer to 1.) and the corner box.
(2) Remove the screw of the V.A. clamp.
Remove the V.A. clamp and the indoor/outdoor con-

necting wire.

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

the electrical cover.

(4) Remove the earth wire connected to the indoor elec-

tronic control P.C. board from the electrical box.
(5) Remove the power monitor receiver holder.
(6) Open the rear cover of the power monitor receiver

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

board.
(7) Disconnect all the connectors on the indoor electronic

control P.C. board and unhook all lead wires.
(8) Remove the screw of the terminal block on the indoor

terminal P.C. board.
(9) Remove the indoor terminal P.C. board and the indoor

electronic control P.C. board.

Photo 2

Photo 3

3. Removing the indoor electrical box

(1) Remove the panel (Refer to 1.) and the corner box.
(2)

Remove the indoor/outdoor connecting wire. (Refer to 2.)
(3) Remove the earth wire connected to the indoor heat

exchanger from the electrical box.
(4) Remove the screw of the electrical cover and remove

the electrical cover.
(5) Disconnect all the connectors on the indoor electronic

control P.C. board and unhook all lead wires.
(6) Remove the screw fixing the electrical box, then the

upper catch of the electrical box, and pull out the

electrical box.

50

Screw of the
electrical box

Indoor elec-

tronic control P.C.
board

Earth wires

Indoor terminal
P.C. board

Upper catch

Power monitor
receiver holder

Screw of the
electrical cover

Electrical box

Screw of the
V.A. clamp

Screw of the
terminal block

OBH531E

OPERATING PROCEDURE PHOTOS

4. Removing the nozzle assembly

(1) Remove the panel (Refer to 1.) and the corner box.
(2) Remove the V.A. clamp, and then the indoor/outdoor

connecting wire. (Photo 2)
(3) Remove the electrical cover. (Photo 2)
(4) Disconnect the following connectors on the electronic

control P.C. board:

CN151 (Horizontal vane motor)
CN152 (Vertical vane motor)

CN1R1 (Interlock switch)
(5) Remove the power monitor receiver holder. (Photo 2)
(6) Pull out the drain hose from the nozzle assembly and

remove the nozzle assembly.
(7) Remove the vane motors. (Refer to 5 and 6.)
(8) Remove the interlock switch.

Photo 4

Photo 5

Photo 6

5. Removing the vertical vane motor unit

(1) Remove the nozzle assembly. (Refer to 4.)
(2) Remove the crank of the vertical vane motor unit from

the arm of the vertical vane.

(3) Remove the screw of the vertical vane motor unit, and

pull the vertical vane motor unit.

(4) Remove the screws of the vertical vane motor unit

cover.

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

the shaft of the vane motor.

(6) Remove the vertical vane motor from the vertical vane

motor unit.

(7) Disconnect the connector of vertical vane motor from

the vertical vane motor.

6. Removing the horizontal vane motor

(1) Remove the nozzle assembly. (Refer to 4.)
(2) Remove the screws of the horizontal vane motor unit,

and pull out the horizontal vane motor unit.

(3) Disconnect the connector from the horizontal vane

motor.

(4) Remove the screws of the horizontal vane motor unit

cover.

(5) Remove the horizontal vane motor from the horizontal

vane motor unit.

51

Screws of
the vertical
vane motor
unit cover

Screw of
the vertical vane
motor unit

Screws of the interlock switch

Screws of
the horizontal
vane motor
unit cover

Screws of
the horizontal vane
motor unit

OBH531E

OPERATING PROCEDURE PHOTOS

7. Removing the water cut, the indoor fan motor,
the indoor coil thermistor, and the line flow fan

(1) Remove the panel (Refer to 1.) and the corner box.
(2) Remove the power monitor receiver holder, the electri-

cal box and the nozzle assembly. (Refer to 3 and 4.)

(3) Remove the screw of the water cut and remove the

water cut.
(4) Remove the screws fixing the motor bed.
(5) Loosen the screw fixing the line flow fan.
(6) Remove the motor bed together with fan motor and

motor band.
(7) Remove the screw of the motor band.
(8) Release the hooks of the motor band. Remove the

motor band. Pull out the indoor fan motor.
(9) Remove the indoor coil thermistor from the heat

exchanger.
Install the indoor coil thermistor in its former position
when assembling it. (Photo 9)
(10) Remove the screws fixing the left side of the heat

exchanger.
(11) Lift the heat exchanger, and pull out the line flow fan

to the lower-left.

Photo 8

Photo 9

Photo 10

Photo 7

52

Indoor coil thermistor (main) RT12

Screws of the
motor bed

Screws of the
heat exchanger

Motor band

Indoor coil thermistor (sub) RT13

Screw of the line flow fan

Power monitor
receiver holder

Screw of the
electrical cover

Electrical box

Screw of the
V.A. clamp

Screw of the
water cut

Screw of the
motor band

OBH531E

53

OBH531E

© Copyright 2009 MITSUBISHI ELECTRIC CORPORATION
Distributed in Dec. 2013. No. OBH531 REVISED EDITION-E
Distributed in Sep. 2013. No. OBH531 REVISED EDITION-D
Distributed in Jul. 2011. No. OBH531 REVISED EDITION-C
Distributed in Jul. 2010. No. OBH531 REVISED EDITION-B 5
Distributed in Oct. 2009. No. OBH531 REVISED EDITION-A 5
Distributed in Feb. 2009. No. OBH531 5
Made in Japan

New publication, effective Dec. 2013
Specifications are subject to change without notice.

HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN