Mitsubishi MSH-GA50VB-E1, MSH-GA60VB-E1, MSH-GA80VB-E1 Service Manual

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

INDOOR UNIT

SERVICE MANUAL

Wireless type Models

Revision A:

•RoHS PARTS LIST has been corrected. Please void OB367 REVISED EDITION-A.

No. OB367

REVISED EDITION-B

MSH-GA50VB MSH-GA60VB MSH-GA80VB -

E1

Outdoor unit service manual

MUH-GA•VB Series (OB368)

CONTENTS

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

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

3. SPECIFICATION·················································4

4. NOISE CRITERIA CURVES·······························5

5. OUTLINES AND DIMENSIONS·························6

6. WIRING DIAGRAM ············································7

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

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

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

10. DISASSEMBLY INSTRUCTIONS·····················19

11. PARTS LIST······················································21

12. RoHS PARTS LIST···········································23

13. OPTIONAL PARTS ···········································25

NOTE:

This service manual describes technical data of the indoor units. RoHS compliant products have <G> mark on the spec name plate. For servicing of RoHS compliant products, refer to the RoHS PARTS LIST (RoHS compliant).

Grille

(When the grille is opened)

Remote controller

Operation section

Display section

Emergency operation switch

Operation indicator lamp

Air inlet

To breaker

Power supply cord

Remote control

receiving section

Air cleaning filter (option) (White bellows type)

Horizontal vane

Vertical vanes

Catechin air filter

Remote control

receiving section

Front panel

1 2 3 4 5 6 7

Installation plate Installation plate fixing screw 4 o 25 mm Remote controller holder Fixing screw for 3 o 3.5 o 1.6 mm (Black) Battery (AAA) for remote controller Wireless remote controller Felt tape (Used for left or left-rear piping)

1 7 1 2 2 1 1

MSH-GA50VB MSH-GA60VB MSH-GA80VB

Revision A:

•RoHS PARTS LIST has been added.

Revision B:

•RoHS PARTS LIST has been corrected.

1

MSH-A18WV - ➔MSH-GA50VB MSH-A24WV - ➔MSH-GA60VB MSH-A30WV - ➔MSH-GA80VB -

1. Model name has been changed. Indication of capacity has been changed. (BTU➔kW)

2. Grille design has been changed.

3. Unit size has been changed.(W 1,100aoH 325aoD 227a ➔ W1,100aoH 325aoD 258a)

2

TECHNICAL CHANGES

E1E1

PART NAMES AND FUNCTIONS

MSH-GA50VB MSH-GA60VB MSH-GA80VB

ACCESSORIES

2

REMOTE CONTROLLER

ON/OFF

TOO

COOL

PM

AM

TOO

WARM

ON/OFF

FAN

TOO

WARM

TOO

COOL

VANE

MODE

ECONO COOL

STOP

START

HR.

MIN.

WIDE VANE

LONG

I FEEL

COOL

HEAT

DRY

PM

CLOCK

AM

RESET CLOCK

Open the front lid.

Signal transmitting section

Operation display section

OPERATE /STOP

(ON /OFF)button

TEMPERATURE buttons

OPERATION SELECT button

FAN SPEED CONTROL button

OFF-TIMER button

HR. button

MIN. button

(TIME SET button)

ON-TIMER button

RESET button

ECONO COOL button

VANE button

(Horizontal vane button)

CLOCK SET button

LONG button

WIDE VANE button

(Vertical vane button)

Indication of remote controller model is on back.

MSH-GA50VB MSH-GA60VB MSH-GA80VB

3

Indoor model

Function

Power supply

Air flow

(High/Med./Low) Power outlet Running current Power input Power factor Fan motor current Model Winding resistance(at 20:) Dimensions WOHOD Weight Air direction Sound level(High/Med./Low) Fan speed(High/Med./Low) Fan speed regulator Thermistor RT11(at 25:) Thermistor RT12(at 25:) Remote controller model

K /h

A

A W %

A

"

mm

kg

dB

rpm

k" k"

MSH-GA50VB

Single phase

230V, 50Hz

768/642/528

10

0.3 60 87

0.30

RC4V32-AA WHT-BLK 293 BLK-RED 146

1,100O325O258

16

5

42/38/34

1,070/920/780

3 10 10

KP0A, KM04A

Cooling

Heating

MSH-GA60VB

Single phase

230V, 50Hz

10

0.3 60 87

0.30

RC4V32-AA WHT-BLK 293 BLK-RED 146

1,100O325O258

16

5

3 10 10

KP0A, KM04A

Cooling

768/672/588

45/41/37

1,070/960/850

Heating

768/642/528

45/40/34

1,070/920/780

Electrical

data

Fan

motor

Special

remarks

Capacity

Indoor model

Function

Power supply

Air flow

(High/Med./Low) Power outlet Running current Power input Power factor Fan motor current Model Winding resistance(at 20:) Dimensions WOHOD Weight Air direction Sound level(High/Med./Low) Fan speed(High/Med./Low) Fan speed regulator Thermistor RT11(at 25:) Thermistor RT12(at 25:) Thermistor RT13(at 25:) Remote controller model

K /h

A A

W

% A

"

mm

kg

dB

rpm

k" k" k"

MSH-GA80VB

Single phase

230V, 50Hz

10

0.34 69 88

0.34

RC4V40-AA WHT-BLK 138.2 BLK-RED 159.0 1,100O325O258

16

5

47/42/37

3 10 10 10

KP0A, KM04A

Cooling

960/822/684

1,310/1,130/970

Heating

960/834/732

1,310/1,150/1,020

Electrical

data

Fan

motor

Special

remarks

Capacity

SPECIFICATION

NOTE: Test conditions are based on ISO 5151.

Cooling : Indoor DB27°C WB19°C Heating : Indoor DB20°C WB 15.5°C

Outdoor DB35°C WB(24°C) Outdoor DB 7°C WB 6°C

Indoor-Outdoor piping length : 5m

4

90

80

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

Test conditions, Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19:

47

SPL(dB(A)) LINE

High

FAN SPEED

Heating : Dry-bulb temperature 20: Wet-bulb temperature 15.5:

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

Test conditions, Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19:

APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE

42

SPL(dB(A)) LINE

High

FAN SPEED

Heating : Dry-bulb temperature 20: Wet-bulb temperature 15.5:

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

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

Test conditions, Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19:

APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE

45

SPL(dB(A)) LINE

High

FAN SPEED

Heating : Dry-bulb temperature 20: Wet-bulb temperature 15.5:

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

INDOOR UNIT

WALL

MICROPHONE

0.8m

1m

NOISE CRITERIA CURVES

MSH-GA50VB MSH-GA60VB

MSH-GA80VB

5

258

162

19

58

47

7.5

315

255.547

2.5

98

173

98 173414.5 414.5

5

253

791

56

1068

1100

325

Air out

Air in

Insulation [28

Drain hose [16 (Connected part O.D)

Installation plate

Wall hole [75

Wireless remote controller

Installation plate

Indoor unit

{

Liquid line [ 6.35-0.5m Gas line [ 12-0.43m Insulation [ 50 O.D

[ 32 I.D

{

Liquid line [ 9.52-0.5m Gas line [ 12-0.43m Insulation [ 50 O.D

[ 32 I.D

for MSH-GA50/60VB

for MSH-GA80VB

Power supply cord Lead to right 2.0m Lead to left 1.0m

OUTLINES AND DIMENSIONS

MSH-GA50VB MSH-GA60VB MSH-GA80VB

Unit: mm

6

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

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

3.Symbols below indicate. : Connector

: Terminal block

NOTES:

SYMBOL

C11

F11

HIC1

MF

NAME INDOOR FAN CAPACITOR FUSE (3.15A) DC/DC CONVERTER INDOOR FAN MOTOR (INNER FUSE)

SYMBOL

MV1

MV2 NR11 RT11

NAME VANE MOTOR (HORIZONTAL) VANE MOTOR (VERTICAL) VARISTOR ROOM TEMPERATURE THERMISTOR

SYMBOL

RT12

SR141

TB

NAME INDOOR COIL THERMISTOR SOLID STATE RELAY TERMINAL BLOCK

TB

TAB12

3

REMOTE CONTROLLER

RECEIVER P.C.BOARD

DISPLAY P.C.BOARD

102

CN

101

CN

RED BLU

MV2

CN201

3 2 1

BRN

L

N

3

F11

ELECTRONIC CONTROL P.C. BOARD

NR11

CN211

CN 111

RT11

RT12

15

MV2

CN 151

CN112

1

2

MV1

HIC1

C11

121

CN

1 3 4

SR141

3

MF

RED

WHT

BRN

YLW

GRY

BLK

GRN/YLW

BLU

PE

BRN

TO OUTDOOR UNIT CONNECTING

12V

1 2 3 4 5 6

CIRCUIT BREAKER

POWER SUPPLY CORD ~/N 230V 50Hz

12V

TO OUTDOOR UNIT CONNECTING

BRN BLU

GRN/YLW

BLK GRY YLW BRN WHT RED

MF

3

SR141

4

3

1

CN 121

C11

HIC1

MV1

RT13

4 3 2 1

CN112

151

CN

MV2

15

RT12

RT11

111

CN

CN211

NR11

ELECTRONIC CONTROL P.C. BOARD

F11

3 N L

BRN

1

2

3

CN201

MV2

BLU

RED

CN 101

CN

102

DISPLAY P.C.BOARD

RECEIVER P.C.BOARD

REMOTE CONTROLLER

33

TAB12

TB

PE

CIRCUIT BREAKER

POWER SUPPLY CORD ~/N 230V 50Hz

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

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

3.Symbols below indicate. : Connector

: Terminal block

NOTES:

SYMBOL

SR141

TB

SYMBOL

MV2 NR11 RT11 RT12 RT13

SYMBOL

C11

F11

HIC1

MF

MV1

INDOOR FAN CAPACITOR FUSE(3.15A) DC/DC CONVERTER INDOOR FAN MOTOR(INNER PROTECTOR) VANE MOTOR(HORIZONTAL)

VANE MOTOR(VERTICAL) VARISTOR ROOM TEMPERATURE THERMIST OR INDOOR COIL THERMISTOR (MAIN) INDOOR COIL THERMISTOR (SUB)

SOLID STATE RELAY TERMINAL BLOCK

NAME

NAME NAME

WIRING DIAGRAM

MSH-GA50VB MSH-GA60VB

MSH-GA80VB

7

Indoor heat exchanger

Flared connection

Room temperature thermistor RT11

Indoor coil thermistor RT13(sub)

Flared connection

Refrigerant pipe [15.88 (with heat insulator)

Refrigerant pipe [9.52 (with heat insulator)

Indoor coil thermistor RT12(main)

Strainer

#50

REFRIGERANT SYSTEM DIAGRAM

MSH-GA50VB

Indoor heat exchanger

Room temperature thermistor RT11

Indoor coil thermistor RT12

Distributor

Refrigerant pipe [12.7 (with heat insulator)

Flared connection

MSH-GA60VB

Indoor heat exchanger

Room temperature thermistor RT11

Indoor coil thermistor RT12

Distributor

Unit:mm

Refrigerant pipe [15.88 (with heat insulator)

Flared connection

MSH-GA80VB

Refrigerant pipe [6.35 (with heat insulator)

Refrigerant flow in cooling Refrigerant flow in heating

8

No. 1 unit No. 2 unit No. 3 unit No. 4 unit

1 unit operation No modification

– – –

2 units operation

Same as at left

Solder J1

– –

3 units operation

Same as at left Same as at left

Solder J2

–

4 units operation

Same as at left Same as at left Same as at left

Solder both J1 and J2

SERVICE FUNCTIONS

MSH-GA50VB MSH-GA60VB MSH-GA80VB

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.

Set time : 1 minute ➔ 1-second Set time : 3 minute ➔ 3-second (It takes 3 minutes for the compressor to start operation. However, the starting time is

shortened by short circuit of JPG and JPS.)

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

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

How to modify the remote controller P.C. board

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

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.

Remote controller model : KM04A

J2

J1

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.

Remote controller model : KP0A

J2

Table 1

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 only accepts the signal from the remote controller that has been assigned to the indoor unit once they are set. The setting will be cancelled if the breaker has turned off, or the power supply has shut down. Please conduct the above setting once again after the power has restored.

J1

9