Mitsubishi MSZ-GE22VA-E1, MSZ-GE25VA-E1, MSZ-GE35VA-E1, MSZ-GE42VA-E1, MSZ-GE50VA-E1 Service Manual

...

SPLIT-TYPE AIR CONDITIONERS

INDOOR UNIT

SERVICE MANUAL

Models

Revision D:

• The model name for MSZ-GE25VA was added to 8-3. "AUTO RESTART FUNCTION".

Because the model name was not written there.

Please void OBH515 REVISED EDITION-C.

No. OBH515

REVISED EDITION-D

MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA MSZ-GE60VA MSZ-GE71VA -

MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA

Outdoor unit service manual MUZ-GE·VA Series (OBH516) MXZ-A·VA Series (OB377) MXZ-8A140A (OC316) MXZ-B·VA Series (OB554)

CONTENTS

1. TECHNICAL CHANGES ··································· 3

2. PART NAMES AND FUNCTIONS ····················· 4

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

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

5. OUTLINES AND DIMENSIONS ························ 8

6. WIRING DIAGRAM ············································ 9

7. REFRIGERANT SYSTEM DIAGRAM ············· 10

8. SERVICE FUNCTIONS ····································11

9. MICROPROCESSOR CONTROL ··················· 13

10. TROUBLESHOOTING ····································· 20

11. DISASSEMBLY INSTRUCTIONS ···················· 38

NOTE:

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

PARTS CATALOG (OBB515)

Revision A:

• 11. DISASSEMBLY INSTRUCTIONS has been corrected. 11-6. Photo 9 has been changed.

Revision B:

• MSZ-GE42VA - E1 and MSZ-GE50VA - E1 have been added.

Revision C:

• MSZ-GE60VA - E1 and MSZ-GE71VA - E1 have been added.

Revision D:

• The model name for MSZ-GE25VA was added to 8-3. "AUTO RESTART FUNCTION".

Because the model name was not written there.

TECHNICAL CHANGES

MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA MSZ-GE60VA MSZ-GE71VA -

1. New model

PART NAMES AND FUNCTIONS

MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA

Air ﬁlter (Catechin air ﬁlter)

Air cleaning ﬁlter (Anti-Allergy Enzyme Filter, option)

Air inlet

Front panel

Heat exchanger

Air outlet

Fan guard

Fan

Horizontal vane

Remote control receiving section

Emergency operation switch (E.O. SW)

MSZ-GE60VA MSZ-GE71VA

Front panel

Air ﬁ lter

(Nano platinum ﬁ lter)

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

Air inlet

Air outlet

Remote controller

Vertical vane

Operation indicator lamp

ACCESSORIES

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

Fan guard

Fan

Horizontal vane

Model

Heat exchanger

Vertical vane

MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA

Remote controller

Display section

Operation indicator lamp

Emergency operation switch

Remote control receiving section

MSZ-GE60VA MSZ-GE71VA

SPECIFICATION

Indoor model

Power supply Single phase 230 V, 50 Hz

Power input

Running current

Electrical

data

Model RC0J40-FK RC0J56-AF

Current 1

Fan

motor Dimensions W × H × D mm 798 × 295 × 232 1100 × 325 × 238 Weight kg 10 16

Air direction 5

Airﬂ ow

Sound level

Special remarks

Fan speed

Fan speed regulator 5

Remote controller model KM09A SG10A

Cooling Heating 23 30 39 62 58 Cooling

Heating 0.23 0.31 0.36 0.53 0.51

Cooling Heating 0.23 0.31 0.36 0.53 0.51

Super High + LONG + POWERFUL Super High High 546

Cooling

Med. 402 Low 288 Silent 246 348 390 588 582 Super High + LONG + POWERFUL Super High High 546 624 732

Heating

Med. 396 402 516 576 804 798 Low 288 Silent 246 348 390 588 612 Super High + LONG + POWERFUL Super High High 36 40 44 45

Cooling

Med. 29 30 35 38 41 Low 21 22 30 33 37 Silent 19 26 28 29 30 Super High + LONG + POWERFUL Super High High 36 40 43 45

Heating

Med. 29 30 35 37 41 Low 21 22 30 33 37 Silent 19 26 28 29 30 Super High + LONG + POWERFUL Super High High 860 950 1,060 960 1,010

Cooling

Med. 670 Low 530 680 750 740 800 Silent 470 600 Super High + LONG + POWERFUL Super High High

Heating

Med. Low 530 690 750 740 800 Silent 470 600 650 660 730

dB(A)

rpm

MSZ-

GE22VA

MSZ-

GE25VA

22 29 43 38 58

0.22 0.29 0.39 0.35 0.51

678 762 768 906 1,098 1,068

(552

(276

690 786 870 1,098 1,068

(276 2)

42 43 46 49

42 46 48 49

1,020 1,120 1,120 1,280 1,090 1,140

1,040 1,140 1,240 1,090 1,140 860 (700 670 (610

MSZ-

GE35VA

- 1,242 1,164

2) 402

(414

288 408 468 678 690

- 1,242 1,164

288 420 468 678 690

-5253

-52

- 1,280 1,300

670 (690 2)

- 1,280 1,300

MSZ-

GE42VA

624 714 936 924 516 576 804 798

810 890 850 900

950 (930 2)

810

MSZ-

GE50VA

650 (690 2)

1,080 (930 2)

890 (840 2)

MSZ-

GE60VA

936 (882 2)

960 (910 2)

MSZ-

GE71VA

660 700

1,010

850 900

NOTE: Test conditions are based on ISO 5151. Cooling: Indoor Dry-bulb temperature 27°C Wet-bulb temperature 19°C Outdoor Dry-bulb temperature 35°C Heating: Indoor Dry-bulb temperature 20°C Outdoor Dry-bulb temperature 7°C Wet-bulb temperature 6°C

1 Measured under rated operating frequency.

2 For multi system.

924

Specifications and rating conditions of main electric parts

Fuse (F11) Horizontal vane motor (MV), (MV1) 12 VDC Vertical vane motor

MSZ-GE60VA MSZ-GE71VA

(MV2) 12 VDC

Varistor (NR11) S10K300E3K1 (ERZV14D471) Terminal block (TB)

T3.15AL250V

NOISE CRITERIA CURVES

MSZ-GE22VA MSZ-GE25VA

FAN SPEED

Super High

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

63 125 250 500 1000 2000 4000 8000

BAND CENTER FREQUENCIES, Hz

FUNCTION

COOLING

HEATING

SPL(dB(A))

NC-10

MSZ-GE42VA

FAN SPEED

Super High

FUNCTION

COOLING

HEATING

SPL(dB(A))

LINE

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

MSZ-GE35VA

FAN SPEED

Super High

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

63 125 250 500 1000 2000 4000 8000

BAND CENTER FREQUENCIES, Hz

FUNCTION

COOLING

HEATING

SPL(dB(A))

NC-10

MSZ-GE50VA

FAN SPEED

Super High

FUNCTION

COOLING

HEATING

SPL(dB(A))

LINE

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

LINE

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

63 125 250 500 1000 2000 4000 8000

BAND CENTER FREQUENCIES, Hz

NC-10

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

63 125 250 500 1000 2000 4000 8000

BAND CENTER FREQUENCIES, Hz

NC-10

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

MSZ-GE60VA MSZ-GE71VA

FAN SPEED

Super High

FUNCTION

COOLING

HEATING

SPL(dB(A))

LINE

FAN SPEED

Super High

FUNCTION

COOLING

HEATING

SPL(dB(A))

LINE

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

63 125 250 500 1000 2000 4000 8000

BAND CENTER FREQUENCIES, Hz

NC-10

Test conditions

Cooling: Dry-bulb temperature 27°C

Wet-bulb temperature 19°C

Heating: Dry-bulb temperature 20°C

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

INDOOR UNIT

0.8m

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

63 125 250 500 1000 2000 4000 8000

BAND CENTER FREQUENCIES, Hz

WALL

NC-10

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

MICROPHONE

OUTLINES AND DIMENSIONS

MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA

Installation plate

798 785 6.5

232

295

159

11×26 Oblong hole

Indoor unit

13061950

254

212.5

100

Air out

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

Piping

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

225 225

155 155

33861

315 84

Air in

Installation plate

Piping

107

112

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

11×20 Oblong hole

Drain hose

Unit: mm

211.5

Wall hole ø65

21.5

231.5

253

MSZ-GE60VA MSZ-GE71VA

238

210

193

76 843 181

1100

Installation plate

1090 5

Indoor unit

11×26 Oblong hole

281

129

239.5

225 225

49.5 500.5 439.5

Air in

Installation plate

325

100

(

70°

)

Air out

MSZ-GE60VA

InsulationØ50 O.D

Liquid line

Piping

Gas line

Drain hose Inslation

125

Drain hose

160

184

9.52 - 0.5m (Flared connection

12 - 0.43m (Flared connection

28 Connected part

199.5199.5

Piping

11×20 Oblong hole

Wall hole Ø75

6.35)

15.88)

16 O.D

110

110 .5

21.5

280

258.5

45 238.5

MSZ-GE71VA

InsulationØ50 O.D

Liquid line

Piping

Gas line

Drain hose Inslation

9.52 - 0.5m (Flared connection

12 - 0.43m (Flared connection

28 Connected part

15.88)

16 O.D

9.52)

MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA

MSZ-GE42VA MSZ-GE50VA

WIRING DIAGRAM

MSZ-GE60VA MSZ-GE71VA

REFRIGERANT SYSTEM DIAGRAM

MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA

Indoor heat exchanger

Indoor coil thermistor RT13 (sub)

Room temperature thermistor RT11

Indoor coil thermistor RT12 (main)

Refrigerant pipe ø9.52 ( ø12.7 ( (with heat insulator)

Flared connection

Refrigerant pipe ø6.35 (with heat insulator)

MSZ-

GE22/25/35/42VA)

MSZ-

GE50VA)

Unit: mm

MSZ-GE60VA MSZ-GE71VA

Indoor heat exchanger

Indoor coil thermistor RT13 (sub)

Room temperature thermistor RT11

Indoor coil thermistor RT12 (main)

Refrigerant flow in cooling Refrigerant flow in heating

Refrigerant pipe ø15.88 (with heat insulator)

Flared connection

Refrigerant pipe ø6.35 (MSZ-GE60VA)

(with heat insulator)

ø9.52 (MSZ-GE71VA)

Refrigerant flow in cooling Refrigerant flow in heating

SERVICE FUNCTIONS

MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA MSZ-GE60VA MSZ-GE71VA

8-1. TIMER SHORT MODE

For service, set time can be shortened by short circuit of JPG and JPS on the electronic control P.C. board. The time will be shortened as follows. (Refer to 10-7.2.) Set time: 1 minute → 1 second Set time: 3 minutes → 3 seconds (It takes 3 minutes for the compressor to start operation. However, the starting time is shortened by short circuit-of JPG and JPS.)

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

A maximum of 4 indoor units with wireless remote controllers can be used in a room. In this case, to operate each indoor unit individually by each remote controller, P.C. boards of remote controller must be modified according to the number of the indoor unit.

How to modify the remote controller P.C. board

Remove batteries before modification. The board has a print as shown below:

MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA

NOTE: For modification, take out

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

After modification, put back

the batteries then press the

RESET button.

MSZ-GE60VA MSZ-GE71VA

J1 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.

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.

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 release “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 10-7.2.)

MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA

MSZ-GE60VA MSZ-GE71VA

MSZ-GE42VA MSZ-GE50VA

JR07

Indoor electronic control P.C. board

JR07

Indoor electronic control P.C. board

CN 111CN112CN151CN10A

CN112

CN 111

CN152

CN151

CN10A

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.

MICROPROCESSOR CONTROL

MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA MSZ-GE60VA MSZ-GE71VA

WIRELESS REMOTE CONTROLLER

MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA

Signal transmitting section

Operation display section

OPERATE/STOP (ON/OFF) button

Temperature buttons

MSZ-GE60VA MSZ-GE71VA

Operation display section

Temperature buttons

FAN SPEED CONTROL button

OPERATION SELECT button

ECONO COOL button

VANE CONTROL button

i save button

RESET button

Indication of remote controller model is on back

Signal transmitting section

OPERATION SELECT button

ECONO COOL button

POWERFUL button

i save button

OPERATE/STOP (ON/OFF) button

OFF TIMER button

ON TIMER button

TIME SET buttons FORWARD button BACKWARD button

CLOCK SET button

LONG button

WIDE VANE CONTROL button

FAN SPEED CONTROL button

VANE CONTROL button

TIME, TIMER set buttons FORWARD button BACKWARD button

WEEKLY TIMER set button

RESET button

Indication of remote controller model is on back

CLOCK SET button

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.

INDOOR UNIT DISPLAY SECTION

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

The room temperature is approaching the set temperature

Standby mode (Only during multi system operation)

About 2°C or more away from set temperature

About 1 to 2°C from set temperature

Lighted

Blinking

Not lighted

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-22/25/35/42/50VA)/TEMP

(MSZ-GE60/71VA)] 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.

or button

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 is as same as COOL mode. (9-1.1.)

2. Low outside temperature operation

Low outside temperature operation is as same as COOL mode. (9-1.2.)

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-22/25/35/42/50VA)/TEMP

(MSZ-GE60/71VA)] 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.

or button

9-4. 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.

OPERATION INDICATOR

Lighted

Blinking

Not lighted

• 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.

9-5. 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 (approximate 12 V) transmitted from indoor microprocessor.

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

MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA

AUTO

1 2 3 4 5

SWING

MSZ-GE60VA MSZ-GE71VA

AUTO

(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 (

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

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

Horizontal

position

12345

) mode

SWING

In HEAT operation Vane angle is fixed to Angle 5.

+ 33 hidden pages

Mitsubishi MSZ-GE22VA-E1, MSZ-GE25VA-E1, MSZ-GE35VA-E1, MSZ-GE42VA-E1, MSZ-GE50VA-E1 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual