Mitsubishi Electric MS-GA60VB-E1 Manuale utente

SERVICE MANUAL

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. OPTIONAL PARTS···········································23

Wireless type

Models

MS-GA50VB - (WH)

MS-GA60VB - (WH)

MS-GA80VB - (WH)

No. OB369

SPLIT-TYPE, AIR CONDITIONERS

MS-GA50VB -

MS-GA60VB -

MS-GA80VB - E1

NOTE:

This service manual describes technical data of the indoor units.

As for outdoor units MU-GA50VB - , MU-GA60VB - and MU-GA80VB - ,

refer to service manual OB370. E1E1E1

Indication of model name

OB369-1.qxp 04.10.14 1:37 PM Page 1

TECHNICAL CHANGES

PART NAMES AND FUNCTIONS

INDOOR UNIT

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

Catechin air filter

Front panel

MS-GA50VB -

MS-GA60VB -

MS-GA80VB - E1

MS-A18WV - ➔MS-GA50VB -

MS-A24WV - ➔MS-GA60VB -

MS-A30WV - ➔MS-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)

E1E1

ACCESSORIES

Indoor unit

Installation plate

Installation plate fixing screw 4 o25 mm

Remote controller holder

Fixing screw for 3o3.5 o1.6 mm (Black)

Battery (AAA) for remote controller

Wireless remote controller

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

MS-GA50VB -

MS-GA60VB -

MS-GA80VB -

OB369-1.qxp 04.10.14 1:37 PM Page 2

REMOTE CONTROLLER

MS-GA50VB -

MS-GA60VB -

MS-GA80VB - E1

ON/OFF

TOO

COOL

TOO

WARM

ON/OFF

FAN

TOO

WARM TOO

COOL

VANE

MODE

ECONO COOL

STOP

START

HR.

MIN.

WIDE VANE

LONG

I FEEL

COOL

DRY

CLOCK

RESET CLOCK

FAN

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.

OB369-1.qxp 04.10.14 1:37 PM Page 3

SPECIFICATION

Indoor model

Function

Power supply

Air flow

(High/Med. /Low )

Power outlet

Running current

Power input

Auxiliary heater

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(kW)

rpm

MS-GA50VB - E1

Cooling

Single phase

230V, 50Hz

768/642 /528

0.30

—

0.30

RC4V32-AA

WHT-BLK 293

BLK-RED 146

1,100O325O258

42/38 /34

1,070/920 /780

KM04B

MS-GA60VB - E1

Cooling

Single phase

230V, 50Hz

768/672 /588

0.30

—

0.30

RC4V32-AA

WHT-BLK 293

BLK-RED 146

1,100O325O258

45/41 /37

1,070/960 /850

KM04B

Electrical

data

Fan

motor

Special

remarks

Capacity

NOTE: Test conditions are based on ISO 5151.

Cooling : Indoor DB27°C WB19°C

Outdoor DB35°C WB(24°C)

Indoor-Outdoor piping length : 5m

wReference value

Indoor model

Function

Power supply

Air flow

(High/Med. /Low )

Power outlet

Running current

Power input

Auxiliary heater

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(kW)

rpm

MS-GA80VB - E1

Cooling

Single phase

230V, 50Hz

960/822 /684

0.34

—

0.34

RC4V40-AA

WHT-BLK 138.2

BLK-RED 159.0

1,100O325O258

47/42 /37

1,280/1,130 /970

KM04B

Electrical

data

Fan

motor

Special

remarks

Capacity

OB369-1.qxp 04.10.14 1:37 PM Page 4

NOISE CRITERIA CURVES

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:

SPL(dB(A)) LINE

High

FAN SPEED

MS-GA80VB - E1

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

SPL(dB(A)) LINE

High

FAN SPEED

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

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

SPL(dB(A)) LINE

High

FAN SPEED

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

MS-GA50VB - E1 MS-GA60VB - E1

INDOORUNIT WALL

MICROPHONE

0.8m

OB369-1.qxp 04.10.14 1:37 PM Page 5

OUTLINES AND DIMENSIONS

258

162

7.5

315

255.547

2.5

98 173

98 173414.5 414.5

253

791

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 MS-GA50VB

for MS-GA60/GA80VB

Power supply cord

Lead to right 2.0m

Lead to left 1.0m

INDOOR UNIT

MS-GA50VB -

MS-GA60VB -

MS-GA80VB - E1

E1 Unit: mm

OB369-1.qxp 04.10.14 1:37 PM Page 6

MODELS WIRING DIAGRAM

MODEL WIRING DIAGRAM

WIRING DIAGRAM

MS-GA50VB -

MS-GA60VB - E1

INDOOR UNIT

12V BLK

GRY

YLW

BRN

WHT

RED

SR141 4

121

C11

HIC1

MV1

CN112

151

MV2

RT12

RT11

111

CN211

NR11

ELECTRONIC CONTROL

P. C. BOARD

F11

LBRN

CN201

MV2

101

102

DISPLAY

P. C. BOARD RECEIVER

P. C. BOARD

REMOTE

CONTROLLER

TAB12

GRN/YLW

TB 2

CN202

TO OUTDOOR UNIT

CONNECTING BLK

WHT

BLU

BRN

BLU

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

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

NAME

INDOOR COIL THERMISTOR

SOLID STATE RELAY

TERMINAL BLOCK

PE CIRCUIT

BREAKER

POWER

SUPPLY

CORD

~/N 230V

50Hz

INDOOR UNIT

12V

TO OUTDOOR

UNIT

CONNECTING

BRN

BLU

GRN/YLW

BLK

GRY

YLW

BRN

WHT

RED

SR141 4

121

C11

HIC1

MV1

RT13

CN112

151

MV2

RT12

RT11

111

CN211

NR11

ELECTRONIC CONTROL

P. C. BOARD

F11

LBRN

CN201

MV2

BLU

RED

101

102

DISPLAY

P. C. BOARD RECEIVER

P. C. BOARD

REMOTE

CONTROLLER

TAB12

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

SYMBOL

MV2

NR11

RT11

RT12

RT13

SYMBOL

C11

F11

HIC1

MV1

NAME NAME NAME

INDOOR FAN CAPACITOR

FUSE(3.15A)

DC/DC CONVERTER

INDOOR FAN MOTOR(INNER PROTECTOR)

VANE MOTOR(HORIZONTAL)

VANE MOTOR(VERTICAL)

VARISTOR

ROOM TEMPERATURE THERMISTOR

INDOOR COIL THERMISTOR (MAIN)

INDOOR COIL THERMISTOR (SUB)

SOLID STATE RELAY

TERMINAL BLOCK

MS-GA80VB - E1

OB369-1.qxp 04.10.14 1:37 PM Page 7

REFRIGERANT SYSTEM DIAGRAM

MS-GA80VB - E1

INDOOR UNIT

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 flow in cooling

MS-GA50VB - E1

INDOOR UNIT

Indoor

heat

exchanger

Room temperature

thermistor

RT11

Refrigerant pipe [12.7

(with heat insulator)

Flared connection

Indoor coil

thermistor

RT12

Refrigerant pipe [6.35

(with heat insulator)

Distributor

MS-GA60VB - E1

INDOOR UNIT

Indoor

heat

exchanger

Room temperature

thermistor

RT11

Refrigerant pipe [15.88

(with heat insulator)

Flared connection

Indoor coil

thermistor

RT12

Refrigerant pipe [6.35

(with heat insulator)

Distributor

Unit:mm

OB369-1.qxp 04.10.14 1:37 PM Page 8

SERVICE FUNCTIONS

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 :

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.)

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.

MS-GA50VB -

MS-GA60VB -

MS-GA80VB - E1

NOTE : For remodelling, take out the bat-

teries and press the

OPERATE/STOP(ON/OFF)button

twice or 3 times at first.

After finish remodelling, put back

the batteries then press the

RESET button.

Remote controller model : KM04B

Table 1

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

Solder J2

–

4 units operation

Same as at left

Solder both J1 and J2

How to set the remote controller exclusively for particular indoor unit

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

remote controller for the indoor unit.

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

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

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

OB369-1.qxp 04.10.14 1:37 PM Page 9

How to release “AUTO RESTART FUNCTION”

1Turn off the main power for the unit.

2Pull out the electronic control P.C. board, the receiver P.C.

board and the display P.C. board. (Refer to page 19.)

3Solder jumper wire to JR07 on the indoor electronic control

P.C. board. (Refer to page 18.)

JR07

IC152

CN151

CN112

CN111

CN121

SW1

IC101

RA102

C11

CN201

CN211

TAB12

Operation

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

2After 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.)

NOTE

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

remote controller.

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

cancelled.

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

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

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

has restored after power failure.Then, the unit will restart automatically. However if the unit is operated in “I FEEL CON-

TROL” mode before power failure, the operation is not memorized. In “I FEEL CONTROL” mode, the operation is decided

by the initial room temperature.

8-3. AUTO RESTART FUNCTION

OB369-1.qxp 04.10.14 1:37 PM Page 10

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