Mitsubishi MSC-GA20VB, MSC-GA25VB, MSC-GA35VB User Manual

SERVICE MANUAL

SPLIT-TYPE, AIR CONDITIONERS SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

Wireless type Models

E1

(WH)

MSC-GA20VB MSC-GA25VB MSC-GA35VB -

No. OB385

Indication of model name

MSC-GA20VB MSC-GA25VB MSC-GA35VB -

NOTE:

•This manual describes technical data of indoor units.

•As for outdoor units MU-GA20/GA25/GA35VB - , refer to the service manual OB386.

•As for outdoor units MUH-GA20/GA25/GA35VB - , refer to the service manual OB387.

•As for outdoor units MUX-2A28/2A59/3A60/3A63/2A70/4A73VB - , refer to the service manual OB384.

•As for outdoor units MXZ-A14/A18/A26/A32WV - , refer to the service manual OB319 REVISED

EDITION-A.

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CONTENTS

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

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

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

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

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

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

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

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

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

10. DISASSEMBLY INSTRUCTIONS·····················18

11. PARTS LIST······················································20

12. OPTIONAL PARTS ···········································22

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2

Emergency operation switch

Fan

Catechin air filter (With deodorizer)

Air outlet

Vertical vanes

Air inlet

to Breaker

Remote control receiving section

Display section

Air cleaning filter(option) (white bellows type)

Front panel

Power supply cord

Panel

Horizontal vane

Operation section

(When the front panel is opened)

Remote controller

Operation indicator lamp Remote control

receiving section

1

TECHNICAL CHANGES

MSC-A07YV - ➔ MSC-GA20VB -

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

2. P.C. board has been changed.

3. Air cleaning filter has been changed to optional parts.

4. Fan motor has been changed.

5. Fan motor capacitor has been changed.

6. Color of indoor unit has been changed.

MSC-A09YV - ➔ MSC-GA25VB -

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

2. P.C. board has been changed.

3. Air cleaning filter has been changed to optional parts.

4. Fan motor has been changed.

5. Fan motor capacitor has been changed.

6. Color of indoor unit has been changed.

MSC-A12YV - ➔ MSC-GA35VB -

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

2. P.C. board has been changed.

3. Air cleaning filter has been changed to optional parts.

4. Fan motor has been changed.

5. Fan motor capacitor has been changed.

6. Color of indoor unit has been changed.

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2

PART NAMES AND FUNCTIONS

MSC-GA20VB - MSC-GA25VB - MSC-GA35VB -

INDOOR UNIT

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3

MSC-GA20VB -

Installation plate Installation plate fixing screw 4 o 25 mm Remote controller holder Fixing screw for 3 3.5 o 16 mm Battery (AAA) for remote controller Wireless remote controller Felt tape (Used for left or left-rear piping)

1 5 1 2 2 1 1

1

2

3

4

5

6

7

ON/OFF

FAN

TOO

WARM

TOO

COOL

VANE

MODE

ECONO COOL

STOP

START

HR.

MIN.

I FEEL

COOL

DRY

PM

CLOCK

AM

RESET

CLOCK

HEAT /FAN

/

Open the front lid.

ON/OFF

TOO

COOL

PM

AM

TOO

WARM

Signal transmitting section

Operation display section

OPERATE /STOP (ON /OFF) button

TEMPERATURE buttons

Indication of remote controller model is on back.

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 CONTROL button

CLOCK SET button

MSC-GA25VB MSC-GA35VB -

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ACCESSORIES

REMOTE CONTROLLER

4

3

Indoor model

Function

Indoor unit 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"

MSC-GA20VB -

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Single phase

230V,50Hz

10

0.17 35 90

0.17

RC4V19-JA WHT-BLK 283 BLK-RED 188 815O278O244

9 5

3 10 10

KP1A

Cooling

474/372 /276

36/31 /25

900/750 /600

Heating

510/420 /342

36/31 /25

950/820 /700

MSC-GA25VB -

E1

Single phase

230V,50Hz

10

0.17 35 90

0.17

RC4V19-JA WHT-BLK 283 BLK-RED 188 815O278O244

9 5

3 10 10

KP1A

Cooling

474/384 /306

36/31 /25

900/770 /650

Heating

588/456 /342

39/32 /25

1,050/870 /700

MSC-GA35VB -

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Single phase

230V,50Hz

10

0.19 40 92

0.19

RC4V19-HA WHT-BLK 224 BLK-RED 318 815O278O244

10

5

3 10 10

KP1A

Cooling

582/444 /324

40/33 /26

930/760 /600

Heating

606/498 /396

39/33 /26

960/830 /700

Electrical

data

Fan

motor

Special

remarks

Capacity

w w

w

SPECIFICATION

NOTE: 1. Test conditions are based on ISO 5151.

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

Outdoor DB35°C WB24°C Outdoor DB7°C WB6°C

Indoor-Outdoor piping length 5m

W Reference value

5

4

90

80

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

APPROXIMATE TERESHOLD OF HEARING FOR CONTINUOUS NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

Test conditions,

Cooling : DB27: WB19: Heating : DB20: WB -:

MSC-GA20VB- E1

COOLING

High

FUNCTIONFAN SPEED

36

HEATING

SPL(dB

(A)) LINE

90

80

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

APPROXIMATE TERESHOLD OF HEARING FOR CONTINUOUS NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

Test conditions.

Cooling : DB27: WB19: Heating : DB20: WB -:

MSC-GA25VB- E1

COOLING

High

FUNCTIONFAN SPEED

36

HEATING 39

SPL(dB

(A)) LINE

90

80

70

60

50

40

30

20

10

63 125 250 500 1000 2000 4000 8000

APPROXIMATE TERESHOLD OF HEARING FOR CONTINUOUS NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

Test conditions.

Cooling : DB27: WB19: Heating : DB20: WB -:

MSC-GA35VB- E1

COOLING

FUNCTIONFAN SPEED

40

HEATING

High

39

SPL(dB

(A)) LINE

INDOORUNIT

WALL

MICROPHONE

0.8m

1m

NOISE CRITERIA CURVES

6

5

OUTLINES AND DIMENSIONS

MSC-GA20VB MSC-GA25VB -

INDOOR UNIT

278

60

58

162

E1

Installation plate

Indoor unit

783

815

606

149

19

Power supply cord Lead to right 1.0m Lead to left 0.3m

81.5

41

81.5

Air in

30

Air out

326326

242 5

7 or more

90

110

244

133.5

4.5

231.5

42

2.5

81.5

Wall hole

Installation plate

Liquid line Gas line

{

Insulation

Drain hose (Connected part O,D)

Insulation

[65

[6.35-0.5m

[9.52-0.43m

[37 O.D

[21 I.D

[16

[28

271

Unit: mm

Wireless remote controller

MSC-GA35VB -

INDOOR UNIT

278

60

58

162

E1

Installation plate

783

815

Indoor unit

41

Air in

242

326326

5

Installation plate

{

7 or more

606

19

149

Power supply cord Lead to right 1.0m Lead to left 0.3m

30

Air out

244

90

110

161.5161.5

17.5

258

218.5

42

2.5

81.581.5 Wall hole

Liquid line [6.35-0.5m Gas line Insulation

Drain hose (Connected part O,D)

Insulation

[9.52-0.43m

[65

[37 O.D

[21 I.D

[16

[28

Wireless remote controller

7

6

SYMBOL

NR11 RT11 RT12

SR141

NAME

NAME NAME INDOOR FAN CAPACITOR FUSE(3.15A) INDOOR FAN MOTOR (INNER FUSE) VANE MOTOR

VARISTOR ROOM TEMPERATURE THERMISTOR INDOOR COIL THERMISTOR SOLID STATE RELAY

TERMINAL BLOCK

SYMBOL

C11 F11

MF

MV

SYMBOL

TB

T11

TRANSFORMER

MF

1 2 3 4 5 6

125

CNCN

109

5

REMOTE CONTROLLER

23

POWER MONITOR RECEIVER P.C.BOARD

GRN

LD103

PE

12V

FOR MU OR MUX TYPE

FOR MUH OR MXZ-A TYPE

MV

GRN/YLW

POWER SUPPLY CORD

~/N 230V

50Hz

TO OUTDOOR UNIT CONNECTING

12V

1

2

N

3

L

BRN

BLU

BLK

WHT

BLU

RED

BRN

5

CN 151

1

2

CN202

1

2

3

CN201

LD105

CN211

ELECTRONIC CONTROL P.C. BOARD

F11

T11

NR11

RT11

RT12

CN 112

CN 111

5

3

1

CN 121

BLK GRY YLW BRN

3

WHT RED

C11

SR141

CIRCUIT BREAKER

TB

WIRING DIAGRAM

MSC-GA20VB - MSC-GA25VB - MSC-GA35VB -

INDOOR UNIT

MODELS WIRING DIAGRAM

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

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

3. Symbols below indicate.

/: Terminal block, : Connector

7

REFRIGERANT SYSTEM DIAGRAM

MSC-GA20VB - MSC-GA25VB - MSC-GA35VB -

INDOOR UNIT

Indoor heat exchanger

Room temperature thermistor RT11

Indoor coil thermistor RT12

Refrigerant flow in cooling

Refrigerant pipe [9.52 (with heat insulator)

Flared connection

Refrigerant pipe [6.35 (with heat insulator)

8

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Unit:mm