Mitsubishi MCF-GA35VB-E1, MCF-GA50VB-E1, MCF-GA60VB-E1 Service Manual

(When installed on the ceiling)

(When installed on the floor)

FLOOR AND CEILING TYPE AIR CONDITIONERS

INDOOR UNIT

SERVICE MANUAL

Wireless type Models

Revision A:

● RoHS PARTS LIST has been added. Please void OB382.

No. OB382

REVISED EDITION-A

MCF-GA35VB MCF-GA50VB MCF-GA60VB -

Outdoor unit service manual

MUCF-GA•VB Series (OB383)

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 ············································6

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

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

9. TROUBLESHOOTING······································10

10. DISASSEMBLY INSTRUCTIONS·····················15

11. PARTS LIST······················································17

12. RoHS PARTS LIST···········································19

13. OPTIONAL PARTS ···········································21

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).

(When installed on the floor)

(When the air inlet grille is opened.)

Deodorizing filter (Gray sponge type)(option)

Air filter

Remote controller

Air inlet

Operation section

Air cleaning filter (White bellows type)(option)

Front panel

Receiving section

Operation indicator lamp

Horizontal vane

Vertical vanes

Emergency operation switch

(When installed on the ceiling)

ACCESSORIES

Item

Installation plate Unit fixing screw 5 o 12mm Wireless remote controller Remote controller holder Fixing screw for

3.5 o 16mm (Black) Battery (AAA) for remote controller Drain hose Drain pipe cover Knockout cover Screw for 4 o 10mm

2 2

1 1 2 2

1 1 1 2

Q'ty

Revision A :

• RoHS PARTS LIST has been added.

MCF-A12WV - ➔ MCF-GA35VB -

1. Model name has been changed.

MCF-A18WV - ➔ MCF-GA50VB -

1. Model name has been changed.

MCF-A24WV - ➔ MCF-GA60VB -

1. Model name has been changed.

TECHNICAL CHANGES

E1E1

PART NAMES AND FUNCTIONS

MCF-GA35VB MCF-GA50VB MCF-GA60VB

REMOTE CONTROLLER

Signal transmitting section

Operation display section

OPERATE /STOP

(ON /OFF)button

Open the front lid.

ON/OFF

TOO

WARM

CLOCK

TOO

WARM

TOO

COOL

TOO

COOL

TEMPERATURE buttons

Indication of remote controller model is on back.

FAN SPEED CONTROL button

OPERATION SELECT button

ECONO COOL button

RESET button

FAN

I FEEL

COOL

VANE

DRY

FAN

MODE

ECONO COOL

RESET

CLOCK

STOP

START

HR.

MIN.

OFF-TIMER button

ON-TIMER button

HR. button

MIN. button

(TIME SET button)

CLOCK SET button

VANE CONTROL button

Indoor model

Function

Power supply

Air flow

(High/Med.W/LowW) 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.W/LowW)

Fan speed

(High/Med.W/LowW) Fan speed regulator Thermistor RT11(at 25:) Thermistor RT12(at 25:) Remote controller model

K /h

A W %

rpm

k" k"

MCF-GA50VB

Cooling

Single phase

230V, 50Hz

780 / 636W / 492W

0.30 66 96

0.30

RB4V25-AC

WHT-BLK 182.2 BLK-YLW 68.9

YLW-BLU 47.5 BLU-BRN 31.5

BRN-RED 22.9

1,100O650O180

46 /41W / 36W

1,240 /1,060W / 845W

3 10 10

KM04N

MCF-GA60VB

Cooling

Single phase

230V, 50Hz

840/ 744W / 642W

0.36 80

0.36

RB4V36-DB

WHT-BLK 84 BLK-YLW 46.2

YLW-BLU 37.2 BLU-BRN 45.2

BRN-RED 13.6

48 /45W / 42W

1,320 /1,190W / 1,060W

Electrical

data

Fan

motor

Special

remarks

Capacity

MCF-GA35VB

Cooling

Single phase

230V, 50Hz

678 /582W /474 W

0.26 56 94

0.26

RB4V19-AC

WHT-BLK 203.2 BLK-YLW 45.9

YLW-BLU 32.7 BLU-BRN 44.4

BRN-RED 23.3

44 /40W /34W

1,105 /970W / 820W

SPECIFICATION

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

W Reference value

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, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE

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

High

SPL(dB

(A)) LINE

FAN SPEED

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, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE

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

High

SPL(dB

(A)) LINE

FAN SPEED

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, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE

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

High

SPL(dB

(A)) LINE

FAN SPEED

INDOOR UNIT

WALL

MICROPHONE

NOISE CRITERIA CURVES

NOISE CRITERIA CURVES MCF-GA35VB MCF-GA50VB

MCF-GA60VB

TAB12

HIC1

ELECTRONIC CONTROL P.C BOARD

WHT

DISP/ P.C.BOARD

RECEIVER

12V

REMOTE CONTROLLER

SW/THERMO P.C.BOARD

RT11

F11

CIRCUIT BREAKER

SUPPLY

TO OUTDOOR UNIT CONNECTING

50Hz

~/N 230V

POWER

TB2

TB1

GRN/YLW

CN202

CN201

BLK

BRN

BLU

NR11

YLW

YLW BLU

SR142

SR143

LDFM LDFL

GRN/YLW

BRN

BLU

6 7

WHT RED

ORN BLK

LDCOM

C11

X144

LDC12 LDFH

LDC11

CN 112

WHT

RED

ORN BLK

RT12

CN 101CN113CN151

SOLID STATE RELAY TERMINAL BLOCK RELAY

SR142~SR143 TB1, TB2

X144

VANE MOTOR VARISTOR ROOM TEMPERATURE THERMISTOR INDOOR COIL THERMISTOR

MV NR11 RT11 RT12

C11 F11

HIC1

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

SYMBOL SYMBOL

SYMBOLNAME

NAME NAME

(When installed on the floor)

(When installed on the ceiling)

500mm or more

00m

or m

ore

500mm or more

1000mm or more

650

616.5

80.8 906 112.8

114

1100

113

143

180

17042.5

[

12.7 (MCF-GA35/GA50VB)

[

15.88 (MCF-GA60VB)

Gas line

[

6.35

Liquid line

Wireless remote controller

162

OUTLINES AND DIMENSIONS

MCF-GA35VB MCF-GA60VB MCF-GA50VB

Unit: mm

WIRING DIAGRAM6

MCF-GA35VB MCF-GA50VB MCF-GA60VB

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

REFRIGERANT SYSTEM DIAGRAM7

Indoor heat exchanger

Distributor

Flared connection

Room temperature thermistor RT11

Flared connection

Refrigerant flow in cooling

Refrigerant pipe [15.88 (with heat insulator)

Refrigerant pipe [6.35 (with heat insulator)

Indoor coil thermistor RT12

Indoor heat exchanger

Distributor

Flared connection

Room temperature thermistor RT11

Indoor coil thermistor RT12

Flared connection

Refrigerant pipe [12.7 (with heat insulator)

Refrigerant pipe [6.35 (with heat insulator)

Indoor heat exchanger

Distributor

Flared connection

Room temperature thermistor RT11

Indoor coil thermistor RT12

Flared connection

Refrigerant pipe [12.7 (with heat insulator)

Refrigerant pipe [6.35 (with heat insulator)

MCF-GA35VB

MCF-GA50VB

Unit : mm

MCF-GA60VB

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

MCF-GA35VB MCF-GA50VB MCF-GA60VB

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 9-6..) 3-minutes time delay : 3-minutes → 3-seconds

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;

Remote controller model : KM04N

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.

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.

Table1.

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.

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