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Mitsubishi Electronics
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MR-420R-W-A-NZ
User Manual
32 pgs1.1 Mb0

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
A……......Australia
A(NZ) .....New Zealand
CONTENTS
1. SPECIFICATIONS....................................................
2. OUTLINES AND DIMENSIONS..................................
3. WIRING DIAGRAM....................................................
4. REFRIGERANT CIRCUIT...........................................
5. NAME OF THE PARTS...........................................
6. TROUBLE SHOOTING..............................................
6.1 TROUBLE CRITERION OF MAIN PARTS.......
6.2 HOW TO CHECK P.C.BOARDS......................
6.3 TEST POINT DIAGRAM OF
MAIN CONTROL BOARD..............................
6.4 MULFUNCTION DISPLAY AND CHECKING
POINT...........................................................
6.5 IMPORTANCE DETAIL OF FAULT ANALYSIS.
7. DISASSEMBLY INSTRUCTIONS.................................
8. PARTS LIST...............................................................
1 7 10 11 13 14 14 16
17
18 19 20 23
1 SPECIFICATION
1.1 SPECIFICATION MR-385R-A MR-385R-A(NZ)
Power supply 230/240V 50Hz
Total capacity (Gross (AS)) L
Dimensions (HXWXD) mm. 1591 x 685 x 700
Cabinet Acrylic resin coated steel
Food liner ABS resin
Cabinet Foamed cyclopenthane
Insulation
Cooling system
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)
Accessories
Weight
Freezer door Foamed cyclopenthane
Refrigerator door Foamed cyclopenthane
Freezer Forced air convection
Refrigerator Surround cooling,multi air flow,front air flow
Ice tray 1 pc.
Ice box 1 pc.
Freezer pocket 2 pcs.
Slide chilled case 1 pc.
Crystal shelf (F)
Crystal shelf (R)
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.
Unit kg 65
Shipping kg 72
385 (F : 130 R : 255)
1 pc.
3 pcs.
- 1 -
MR-420R-A MR-420R-A(NZ)
Power supply 230/240V 50Hz
Total capacity (Gross (AS)) L
Dimensions (HXWXD) mm. 1696 x 685 x 700
Cabinet Acrylic resin coated steel
Food liner ABS resin
Cabinet Foamed cyclopenthane
Insulation
Cooling system
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)
Accessories
Weight
Freezer door Foamed cyclopenthane
Refrigerator door Foamed cyclopenthane
Freezer Forced air convection
Refrigerator Surround cooling,multi air flow,front air flow
Ice tray 1 pc.
Ice box 1 pc.
Freezer pocket 2 pcs.
Slide chilled case 1 pc.
Crystal shelf (F)
Crystal shelf (R)
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.
Unit kg 69
Shipping kg 73
420 (F : 130 R : 290)
1 pc.
3 pcs.
- 2 -
MR-455R-A MR-455R-A(NZ)
Power supply 230/240V 50Hz
Total capacity (Gross (AS)) L
Dimensions (HXWXD) mm. 1806 x 685 x 700
Cabinet Acrylic resin coated steel
Food liner ABS resin
Cabinet Foamed cyclopenthane
Insulation
Cooling system
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)
Accessories
Weight
Freezer door Foamed cyclopenthane
Refrigerator door Foamed cyclopenthane
Freezer Forced air convection
Refrigerator Surround cooling,multi air flow,front air flow
Ice tray 2 pcs.
Ice box 1 pc.
Freezer pocket 2 pcs.
Slide chilled case 1 pc.
Crystal shelf (F)
Crystal shelf (R)
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.
Unit kg 73
Shipping kg 79
454 (F : 130 R : 324)
1 pc.
4 pcs.
- 3 -
1.2 ELECTRICAL PARTS SPECIFICATION
MR-385R-A MR-385R-A(NZ)
Model
Power supply
Compressor Rated input W
Starting current A
Running current A
Winding resistance (T : 20
o
C)
PTC RELAY
Model
Motor protector Ambient temperature
o
C
Time Sec.
Current A
Running capacitor
Capillary tube mm.
Dehydrant Molecular sieve g
Refrigerant HFC. 134a g
DG57C96RAW5
220/240V 50Hz
106/108(220/240V 50Hz)
7.38/8.01(220/240V 50Hz)
0.57/0.55(220/240V 50Hz)
18.2
Ω(Main) / 17.7 Ω(Aux)
PTH7M330MD2
5TM181NHBYY
25
16 MAX
5.4
4
µ
F 400VAC
∅ 1.8 X ∅ 0.7 X 2350
10
145
Defrosting control Defrosting timer
Defrost finish
Thermal fuse
Heater Defrost heater
Deodorition
Model
Type
Fan motor
Number of poles
Input W
Revolution r.p.m
Model Freezer
Dial position ON OFF OPEN SHUT
Temperature control
Warmer
Normal
Colder
Control board
o
C
o
C
Thermister 14 +
73
384
Ω
(240V 150W)
1.5
Filter
UDVH15MA1H
Single phase
2p
Less than 10.2/12 (220/240V 50Hz)
2520 +
200 / 2580+200 (220/240V 50Hz)
Refrigerator (MM1-6177)
o
C
o
C
o
C
-13.7 -19.0 - 3.5
-16.9 -22.9 MAX 5.0 -1.0 +
-20.4 -27.5 - -12.5
1.5
- 4 -
MR-420R-A MR-420R-A(NZ)
Model
Power supply
Compressor Rated input W
Starting current A
Running current A
Winding resistance (T : 20
o
C)
PTC RELAY
Model
Motor protector Ambient temperature
o
C
Time Sec.
Current A
Running capacitor
Capillary tube mm.
Dehydrant Molecular sieve g
Refrigerant HFC. 134a g
DG66C11RAW5
220/240V 50Hz
117/118(220/240V 50Hz)
8.05/8.83(220/240V 50Hz)
0.71/0.66(220/240V 50Hz)
15.4
Ω(Main) / 17.7 Ω(Aux)
PTH7M330MD2
5TM205NHBYY
25
16 MAX
6.0
4
µ
F 400VAC
∅ 1.8 X ∅ 0.7 X 2350
10
145
Defrosting control Defrosting timer
Defrost finish
Thermal fuse
Heater Defrost heater
Deodorition
Model
Type
Fan motor
Number of poles
Input W
Revolution r.p.m
Model Freezer
Dial position ON OFF OPEN SHUT
Temperature control
Warmer
Normal
Colder
Control board
o
C
o
C
Thermister 14 +
73
384
Ω
(240V 150W)
1.5
Filter
UDVH15MA1H
Single phase
2p
Less than 10.2/12 (220/240V 50Hz)
2520 +
200 / 2580+200 (220/240V 50Hz)
Refrigerator (MM1-6177)
o
C
o
C
o
C
-13.7 -19.0 - 3.5
-16.9 -22.9 MAX 5.0 -1.0 +
-20.4 -27.5 - -12.5
1.5
- 5 -
MR-455R-A MR-455R-A(NZ)
Model
Power supply
Compressor Rated input W
Starting current A
Running current A
Winding resistance (T : 20
o
C)
PTC RELAY
Model
Motor protector Ambient temperature
o
C
Time Sec.
Current A
Running capacitor
Capillary tube mm.
Dehydrant Molecular sieve g
Refrigerant HFC. 134a g
DD66C13RAW5
220/240V 50Hz
127/131(220/240V 50Hz)
8.3/9.1(220/240V 50Hz)
0.63/0.61(220/240V 50Hz)
12
Ω
(Main) / 28.7 Ω(Aux)
PTH7M330MD2
5TM205NHBYY
25
16 MAX
6.0
4
µ
F 400VAC
∅ 1.8 X ∅ 0.7 X 2350
10
145
Defrosting control Defrosting timer
Defrost finish
Thermal fuse
Heater Defrost heater
Deodorition
Model
Type
Fan motor
Number of poles
Input W
Revolution r.p.m
Model Freezer
Dial position ON OFF OPEN SHUT
Temperature control
Warmer
Normal
Colder
Control board
o
C
o
C
Thermister 14 +
73
384
Ω
(240V, 150W)
1.5
Filter
UDVH15MA1H
Single phase
2p
Less than 10.2/12 (220/240V 50Hz)
2520 +
200 / 2580+200 (220/240V 50Hz)
Refrigerator (MM1-6177)
o
C
o
C
o
C
-13.7 -19.0 - 3.5
-16.9 -22.9 MAX 5.0 -1.0 +
-20.4 -27.5 - -12.5
1.5
- 6 -
2 OUTLINES AND DIMENSIONS
MR-385R-A MR-385R-A(NZ)
685
Unit : mm
568
81591
942
73
PLUG CORD LENGTH
1950
REQUIRED SPACE FOR INSTALLATION
40
20
100
1591
685
20
1334
- 7 -
454
700
MR-420R-A MR-420R-A(NZ)
Unit : mm
685
568
81696
1047
73
PLUG CORD LENGTH
1950
REQUIRED SPACE FOR INSTALLATION
40
20
100
1696
700
20685
1334
454
- 8 -
MR-455R-A MR-455R-A(NZ)
Unit : mm
685
568
81806
1157
73
PLUG CORD LENGTH
1950
REQUIRED SPACE FOR INSTALLATION
40
20
100
1806
700
20685
1334
454
- 9 -
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