Mitsubishi Electronics MR-385R-ST-A, MR-385R-ST-A-NZ, MR-420R-W-A-NZ, MR-455R-W-A-NZ, MR-420R-ST-A-NZ User Manual

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MITSUBISHI

HOME REFRIGERATORS

SERVICE MANUAL

Models MR-385R-W-A MR-385R-ST-A MR-420R-W-A MR-420R-ST-A MR-455R-W-A MR-455R-ST-A

MR-385R-W-A(NZ) MR-385R-ST-A(NZ) MR-420R-W-A(NZ) MR-420R-ST-A(NZ) MR-455R-W-A(NZ) MR-455R-ST-A(NZ)

2005

NO.SM-RE-0502

CONTENTS

 

1. SPECIFICATIONS....................................................

1

2. OUTLINES AND DIMENSIONS..................................

7

3. WIRING DIAGRAM....................................................

10

4. REFRIGERANT CIRCUIT...........................................

11

5. NAME OF THE PARTS...........................................

13

6. TROUBLE SHOOTING..............................................

14

6.1 TROUBLE CRITERION OF MAIN PARTS.......

14

6.2 HOW TO CHECK P.C.BOARDS......................

16

6.3 TEST POINT DIAGRAM OF

 

MAIN CONTROL BOARD..............................

17

6.4 MULFUNCTION DISPLAY AND CHECKING

 

POINT...........................................................

18

6.5 IMPORTANCE DETAIL OF FAULT ANALYSIS.

19

7. DISASSEMBLY INSTRUCTIONS.................................

20

8. PARTS LIST...............................................................

23

A……......Australia

A(NZ) .....New Zealand

1SPECIFICATION

1.1SPECIFICATION

MR-385R-A

MR-385R-A(NZ)

Power supply

 

 

 

 

230/240V 50Hz

Total capacity (Gross (AS))

 

L

385 (F : 130 R : 255)

Dimensions (HXWXD)

 

mm.

1591 x 685 x 700

Cabinet

 

 

 

 

Acrylic resin coated steel

Food liner

 

 

 

 

ABS resin

 

Cabinet

 

 

Foamed cyclopenthane

Insulation

Freezer door

 

 

Foamed cyclopenthane

 

Refrigerator door

 

 

Foamed cyclopenthane

Cooling system

Freezer

 

 

Forced air convection

 

Refrigerator

 

 

Surround cooling,multi air flow,front air flow

Evaporator

 

 

 

 

Fin and tube type

Condenser

 

 

 

 

Concealed type

Defrost system

 

 

 

 

Automatic (Heater defrost)

Drain

 

 

 

 

Automatic (drainage)

Temperature control system

 

 

Automatic control

Refrigerator room light

 

 

240V 15W (E12)

 

 

Ice tray

 

 

1 pc.

 

 

Ice box

 

 

1 pc.

 

 

Freezer pocket

 

 

2 pcs.

 

 

Slide chilled case

 

 

1 pc.

 

 

Crystal shelf (F)

 

 

1 pc.

 

 

Crystal shelf (R)

 

 

3 pcs.

Accessories

 

Free pocket

 

 

1 pc.

 

 

Egg rack

 

 

2 pcs.

 

 

Adjust pocket

 

 

2 pcs.

 

 

Bottle pocket

 

 

2 pcs.

 

 

Vegetable case

 

 

1 pc.

 

 

Tray V

 

 

1 pc.

 

 

Drain pan

 

 

1 pc.

 

 

Bottle stopper

 

 

1 pc.

Weight

 

Unit

 

kg

65

 

 

Shipping

 

kg

72

- 1 -

MR-420R-A

MR-420R-A(NZ)

Power supply

 

 

 

 

230/240V 50Hz

Total capacity (Gross (AS))

 

L

420 (F : 130 R : 290)

Dimensions (HXWXD)

 

mm.

1696 x 685 x 700

Cabinet

 

 

 

 

Acrylic resin coated steel

Food liner

 

 

 

 

ABS resin

 

Cabinet

 

 

Foamed cyclopenthane

Insulation

Freezer door

 

 

Foamed cyclopenthane

 

Refrigerator door

 

 

Foamed cyclopenthane

Cooling system

Freezer

 

 

Forced air convection

 

Refrigerator

 

 

Surround cooling,multi air flow,front air flow

Evaporator

 

 

 

 

Fin and tube type

Condenser

 

 

 

 

Concealed type

Defrost system

 

 

 

 

Automatic (Heater defrost)

Drain

 

 

 

 

Automatic (drainage)

Temperature control system

 

 

Automatic control

Refrigerator room light

 

 

240V 15W (E12)

 

 

Ice tray

 

 

1 pc.

 

 

Ice box

 

 

1 pc.

 

 

Freezer pocket

 

 

2 pcs.

 

 

Slide chilled case

 

 

1 pc.

 

 

Crystal shelf (F)

 

 

1 pc.

 

 

Crystal shelf (R)

 

 

3 pcs.

Accessories

 

Free pocket

 

 

1 pc.

 

 

Egg rack

 

 

2 pcs.

 

 

Adjust pocket

 

 

2 pcs.

 

 

Bottle pocket

 

 

2 pcs.

 

 

Vegetable case

 

 

1 pc.

 

 

Tray V

 

 

1 pc.

 

 

Drain pan

 

 

1 pc.

 

 

Bottle stopper

 

 

1 pc.

Weight

 

Unit

 

kg

69

 

 

Shipping

 

kg

73

- 2 -

MR-455R-A

MR-455R-A(NZ)

Power supply

 

 

 

 

230/240V 50Hz

Total capacity (Gross (AS))

 

L

454 (F : 130 R : 324)

Dimensions (HXWXD)

 

mm.

1806 x 685 x 700

Cabinet

 

 

 

 

Acrylic resin coated steel

Food liner

 

 

 

 

ABS resin

 

Cabinet

 

 

Foamed cyclopenthane

Insulation

Freezer door

 

 

Foamed cyclopenthane

 

Refrigerator door

 

 

Foamed cyclopenthane

Cooling system

Freezer

 

 

Forced air convection

 

Refrigerator

 

 

Surround cooling,multi air flow,front air flow

Evaporator

 

 

 

 

Fin and tube type

Condenser

 

 

 

 

Concealed type

Defrost system

 

 

 

 

Automatic (Heater defrost)

Drain

 

 

 

 

Automatic (drainage)

Temperature control system

 

 

Automatic control

Refrigerator room light

 

 

240V 15W (E12)

 

 

Ice tray

 

 

2 pcs.

 

 

Ice box

 

 

1 pc.

 

 

Freezer pocket

 

 

2 pcs.

 

 

Slide chilled case

 

 

1 pc.

 

 

Crystal shelf (F)

 

 

1 pc.

 

 

Crystal shelf (R)

 

 

4 pcs.

Accessories

 

Free pocket

 

 

1 pc.

 

 

Egg rack

 

 

2 pcs.

 

 

Adjust pocket

 

 

3 pcs.

 

 

Bottle pocket

 

 

2 pcs.

 

 

Vegetable case

 

 

1 pc.

 

 

Tray V

 

 

1 pc.

 

 

Drain pan

 

 

1 pc.

 

 

Bottle stopper

 

 

1 pc.

Weight

 

Unit

 

kg

73

 

 

Shipping

 

kg

79

- 3 -

1.2 ELECTRICAL PARTS SPECIFICATION

MR-385R-A

MR-385R-A(NZ)

 

Model

 

 

 

 

 

 

DG57C96RAW5

 

 

Power supply

 

 

 

 

 

 

220/240V 50Hz

 

Compressor

 

 

 

 

 

 

 

 

 

Rated input

 

 

W

 

 

106/108(220/240V 50Hz)

 

 

 

 

 

 

 

 

 

Starting current

 

 

A

 

 

7.38/8.01(220/240V 50Hz)

 

 

 

 

 

 

 

 

 

Running current

 

 

A

 

 

0.57/0.55(220/240V 50Hz)

 

 

 

 

 

 

 

 

 

 

 

Winding resistance (T : 20 oC)

 

 

 

 

 

18.2 (Main) / 17.7 (Aux)

PTC RELAY

 

 

 

 

 

 

 

PTH7M330MD2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Model

 

 

 

 

 

 

5TM181NHBYY

 

 

 

 

 

 

 

 

 

 

 

 

 

Motor protector

Ambient temperature

 

 

oC

 

 

 

25

 

 

 

Time

 

 

Sec.

 

 

 

 

16 MAX

 

 

 

 

 

 

 

 

 

 

 

 

 

Current

 

 

A

 

 

 

5.4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Running capacitor

 

 

 

 

 

 

 

4 F 400VAC

 

 

 

 

 

 

 

 

 

 

 

 

Capillary tube

 

 

 

mm.

 

 

1.8 X 0.7 X 2350

 

 

 

 

 

 

 

 

 

 

 

Dehydrant Molecular sieve

 

 

g

 

 

 

10

 

 

 

 

 

 

 

 

 

 

 

 

Refrigerant HFC. 134a

 

 

g

 

 

 

145

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Defrosting control

Defrosting timer

 

 

 

 

 

 

Control board

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Defrost finish

 

 

oC

 

 

 

Thermister 14 + 1.5

 

 

Thermal fuse

 

 

oC

 

 

 

73

 

 

Heater

Defrost heater

 

 

 

 

 

 

384 (240V 150W)

 

 

 

 

 

 

 

 

 

 

 

 

 

Deodorition

 

 

 

 

 

 

 

 

Filter

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Model

 

 

 

 

 

 

UDVH15MA1H

 

 

Type

 

 

 

 

 

 

Single phase

 

 

 

 

 

 

 

 

 

 

 

 

Fan motor

Number of poles

 

 

 

 

 

 

 

2p

 

 

Input

 

 

W

 

 

Less than 10.2/12 (220/240V 50Hz)

 

 

 

 

 

 

 

 

 

Revolution

 

 

r.p.m

 

 

2520 + 200 / 2580+200 (220/240V 50Hz)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Model

 

 

 

 

Freezer

 

Refrigerator

(MM1-6177)

 

Dial position

 

 

ON

 

OFF

 

OPEN

 

SHUT

Temperature control

Warmer

oC

 

-13.7

 

-19.0

 

-

 

3.5

 

Normal

oC

 

-16.9

 

-22.9

 

MAX 5.0

 

-1.0 + 1.5

 

Colder

oC

 

-20.4

 

-27.5

 

-

 

-12.5

- 4 -

MR-420R-A

MR-420R-A(NZ)

 

Model

 

 

 

 

 

 

DG66C11RAW5

 

 

Power supply

 

 

 

 

 

 

220/240V 50Hz

 

Compressor

 

 

 

 

 

 

 

 

 

Rated input

 

 

W

 

 

117/118(220/240V 50Hz)

 

 

 

 

 

 

 

 

 

Starting current

 

 

A

 

 

8.05/8.83(220/240V 50Hz)

 

 

 

 

 

 

 

 

 

Running current

 

 

A

 

 

0.71/0.66(220/240V 50Hz)

 

 

 

 

 

 

 

 

 

 

 

Winding resistance (T : 20 oC)

 

 

 

 

 

15.4 (Main) / 17.7 (Aux)

PTC RELAY

 

 

 

 

 

 

 

PTH7M330MD2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Model

 

 

 

 

 

 

5TM205NHBYY

 

 

 

 

 

 

 

 

 

 

 

 

 

Motor protector

Ambient temperature

 

 

oC

 

 

 

25

 

 

 

Time

 

 

Sec.

 

 

 

 

16 MAX

 

 

 

 

 

 

 

 

 

 

 

 

 

Current

 

 

A

 

 

 

6.0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Running capacitor

 

 

 

 

 

 

 

4 F 400VAC

 

 

 

 

 

 

 

 

 

 

 

 

Capillary tube

 

 

 

mm.

 

 

1.8 X 0.7 X 2350

 

 

 

 

 

 

 

 

 

 

 

Dehydrant Molecular sieve

 

 

g

 

 

 

10

 

 

 

 

 

 

 

 

 

 

 

 

Refrigerant HFC. 134a

 

 

g

 

 

 

145

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Defrosting control

Defrosting timer

 

 

 

 

 

 

Control board

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Defrost finish

 

 

oC

 

 

 

Thermister 14 + 1.5

 

 

Thermal fuse

 

 

oC

 

 

 

73

 

 

Heater

Defrost heater

 

 

 

 

 

 

384 (240V 150W)

 

 

 

 

 

 

 

 

 

 

 

 

 

Deodorition

 

 

 

 

 

 

 

 

Filter

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Model

 

 

 

 

 

 

UDVH15MA1H

 

 

Type

 

 

 

 

 

 

Single phase

 

 

 

 

 

 

 

 

 

 

 

 

Fan motor

Number of poles

 

 

 

 

 

 

 

2p

 

 

Input

 

 

W

 

 

Less than 10.2/12 (220/240V 50Hz)

 

 

 

 

 

 

 

 

 

Revolution

 

 

r.p.m

 

 

2520 + 200 / 2580+200 (220/240V 50Hz)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Model

 

 

 

 

Freezer

 

Refrigerator

(MM1-6177)

 

Dial position

 

 

ON

 

OFF

 

OPEN

 

SHUT

Temperature control

Warmer

oC

 

-13.7

 

-19.0

 

-

 

3.5

 

Normal

oC

 

-16.9

 

-22.9

 

MAX 5.0

 

-1.0 + 1.5

 

Colder

oC

 

-20.4

 

-27.5

 

-

 

-12.5

- 5 -

MR-455R-A

MR-455R-A(NZ)

 

Model

 

 

 

 

 

 

DD66C13RAW5

 

 

Power supply

 

 

 

 

 

 

220/240V 50Hz

 

Compressor

 

 

 

 

 

 

 

 

 

Rated input

 

 

W

 

 

127/131(220/240V 50Hz)

 

 

 

 

 

 

 

 

 

 

Starting current

 

 

A

 

 

8.3/9.1(220/240V 50Hz)

 

 

 

 

 

 

 

 

 

 

Running current

 

 

A

 

 

0.63/0.61(220/240V 50Hz)

 

 

 

 

 

 

 

 

 

 

 

Winding resistance (T : 20 oC)

 

 

 

 

 

12 (Main) / 28.7 (Aux)

PTC RELAY

 

 

 

 

 

 

 

PTH7M330MD2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Model

 

 

 

 

 

 

5TM205NHBYY

 

 

 

 

 

 

 

 

 

 

 

 

 

Motor protector

Ambient temperature

 

 

oC

 

 

 

25

 

 

 

Time

 

 

Sec.

 

 

 

 

16 MAX

 

 

 

 

 

 

 

 

 

 

 

 

 

Current

 

 

A

 

 

 

6.0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Running capacitor

 

 

 

 

 

 

 

4 F 400VAC

 

 

 

 

 

 

 

 

 

 

 

 

Capillary tube

 

 

 

mm.

 

 

1.8 X 0.7 X 2350

 

 

 

 

 

 

 

 

 

 

 

Dehydrant Molecular sieve

 

 

g

 

 

 

10

 

 

 

 

 

 

 

 

 

 

 

 

Refrigerant HFC. 134a

 

 

g

 

 

 

145

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Defrosting control

Defrosting timer

 

 

 

 

 

 

Control board

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Defrost finish

 

 

oC

 

 

 

Thermister 14 + 1.5

 

 

Thermal fuse

 

 

oC

 

 

 

73

 

 

Heater

Defrost heater

 

 

 

 

 

 

384 (240V, 150W)

 

 

 

 

 

 

 

 

 

 

 

 

 

Deodorition

 

 

 

 

 

 

 

 

Filter

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Model

 

 

 

 

 

 

UDVH15MA1H

 

 

Type

 

 

 

 

 

 

Single phase

 

 

 

 

 

 

 

 

 

 

 

 

Fan motor

Number of poles

 

 

 

 

 

 

 

2p

 

 

Input

 

 

W

 

 

Less than 10.2/12 (220/240V 50Hz)

 

 

 

 

 

 

 

 

 

Revolution

 

 

r.p.m

 

 

2520 + 200 / 2580+200 (220/240V 50Hz)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Model

 

 

 

 

Freezer

 

Refrigerator

(MM1-6177)

 

Dial position

 

 

ON

 

OFF

 

OPEN

 

SHUT

Temperature control

Warmer

oC

 

-13.7

 

-19.0

 

-

 

3.5

 

Normal

oC

 

-16.9

 

-22.9

 

MAX 5.0

 

-1.0 + 1.5

 

Colder

oC

 

-20.4

 

-27.5

 

-

 

-12.5

- 6 -

2 OUTLINES AND DIMENSIONS

Unit : mm

MR-385R-A 685

MR-385R-A(NZ)

942 568 1591 8

73

PLUG CORD LENGTH

100

1591

1950

REQUIRED SPACE FOR INSTALLATION

40

20

685

20

 

 

 

 

 

 

1334

454 700

- 7 -

Mitsubishi Electronics MR-385R-ST-A, MR-385R-ST-A-NZ, MR-420R-W-A-NZ, MR-455R-W-A-NZ, MR-420R-ST-A-NZ User Manual

Unit : mm

MR-420R-A MR-420R-A(NZ)

685

1047 568 1696 8

73

PLUG CORD LENGTH

1950

REQUIRED SPACE FOR INSTALLATION

 

40

 

 

100

20

685

20

 

 

 

1696

 

 

1334

 

700

 

454

 

 

 

- 8 -

Unit : mm

MR-455R-A

 

685

 

MR-455R-A(NZ)

 

 

 

1157 568 1806 8

73

PLUG CORD LENGTH

1950

REQUIRED SPACE FOR INSTALLATION

 

40

 

 

100

20

685

20

 

 

 

1806

 

 

1334

 

700

 

454

 

 

 

- 9 -

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