Mitsubishi MR-385R-ST-A(NZ) Service Manual
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Mitsubishi MR-385R-ST-A(NZ) Service 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
A............Australia
A(NZ) .....New Zealand
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)
CONTENTS
1. SPECIFICATIONS....................................................
2. OUTLINES AND DIMENSIONS..................................
3. WIRING DIAGRAM....................................................
4. REFRIGERANT CIRCUIT...........................................
5. NAME OF THE PARTS...........................................
6. TROUBLE SHOOTING..............................................
6.2 HOW TO CHECK P.C.BOARDS......................
MAIN CONTROL BOARD..............................
6.4 MULFUNCTION DISPLAY AND CHECKING
POINT...........................................................
7. DISASSEMBLY INSTRUCTIONS.................................
8. PARTS LIST...............................................................
2005
NO.SM-RE-0502
1
7
10
11
13
14
14
16
17
18
19
20
23

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Summary of Contents for Mitsubishi MR-385R-ST-A(NZ)

  • Page 1: Table Of Contents

    MITSUBISHI 2005 HOME REFRIGERATORS SERVICE MANUAL NO.SM-RE-0502 Models MR-385R-W-A MR-385R-W-A(NZ) MR-385R-ST-A MR-385R-ST-A(NZ) MR-420R-W-A MR-420R-W-A(NZ) MR-420R-ST-A MR-420R-ST-A(NZ) MR-455R-W-A MR-455R-W-A(NZ) MR-455R-ST-A MR-455R-ST-A(NZ) CONTENTS 1. SPECIFICATIONS............ 2. OUTLINES AND DIMENSIONS........3. WIRING DIAGRAM............ 4. REFRIGERANT CIRCUIT........... 5. NAME OF THE PARTS........... 6. TROUBLE SHOOTING..........

  • Page 2: Specifications

    SPECIFICATION 1.1 SPECIFICATION MR-385R-A MR-385R-A(NZ) Power supply 230/240V 50Hz 385 (F : 130 R : 255) Total capacity (Gross (AS)) Dimensions (HXWXD) 1591 x 685 x 700 Cabinet Acrylic resin coated steel Food liner ABS resin Cabinet Foamed cyclopenthane Insulation Freezer door Foamed cyclopenthane Refrigerator door...
  • Page 3 MR-420R-A MR-420R-A(NZ) Power supply 230/240V 50Hz 420 (F : 130 R : 290) Total capacity (Gross (AS)) Dimensions (HXWXD) 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...
  • Page 4 MR-455R-A MR-455R-A(NZ) Power supply 230/240V 50Hz 454 (F : 130 R : 324) Total capacity (Gross (AS)) Dimensions (HXWXD) 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...
  • Page 5 1.2 ELECTRICAL PARTS SPECIFICATION MR-385R-A MR-385R-A(NZ) DG57C96RAW5 Model 220/240V 50Hz Power supply 106/108(220/240V 50Hz) Compressor Rated input Starting current 7.38/8.01(220/240V 50Hz) 0.57/0.55(220/240V 50Hz) Running current 18.2 (Main) / 17.7 (Aux) Winding resistance (T : 20 Ω Ω PTH7M330MD2 PTC RELAY Model 5TM181NHBYY Motor protector Ambient temperature...
  • Page 6 MR-420R-A MR-420R-A(NZ) DG66C11RAW5 Model 220/240V 50Hz Power supply 117/118(220/240V 50Hz) Compressor Rated input Starting current 8.05/8.83(220/240V 50Hz) 0.71/0.66(220/240V 50Hz) Running current 15.4 (Main) / 17.7 (Aux) Winding resistance (T : 20 Ω Ω PTH7M330MD2 PTC RELAY Model 5TM205NHBYY Motor protector Ambient temperature 16 MAX Time Sec.
  • Page 7 MR-455R-A MR-455R-A(NZ) DD66C13RAW5 Model 220/240V 50Hz Power supply 127/131(220/240V 50Hz) Compressor Rated input 8.3/9.1(220/240V 50Hz) Starting current 0.63/0.61(220/240V 50Hz) Running current (Main) / 28.7 (Aux) Winding resistance (T : 20 Ω Ω PTH7M330MD2 PTC RELAY 5TM205NHBYY Model Motor protector Ambient temperature 16 MAX Time Sec.

  • Page 8: Outlines And Dimensions

    OUTLINES AND DIMENSIONS Unit : mm MR-385R-A MR-385R-A(NZ) PLUG CORD LENGTH REQUIRED SPACE FOR INSTALLATION - 7 -...
  • Page 9 Unit : mm MR-420R-A MR-420R-A(NZ) PLUG CORD LENGTH REQUIRED SPACE FOR INSTALLATION - 8 -...
  • Page 10 Unit : mm MR-455R-A MR-455R-A(NZ) PLUG CORD LENGTH REQUIRED SPACE FOR INSTALLATION - 9 -...

  • Page 11: Wiring Diagram

    WIRING DIAGRAM (SKELETON WIRING DIAGRAM) MR-385R-A MR-385R-A(NZ) MR-420R-A MR-420R-A(NZ) MR-455R-A MR-455R-A(NZ) (ACTUAL WIRING DIAGRAM) - 10 -...

  • Page 12: Refrigerant Circuit

    REFRIGERANT CIRCUIT MR-385R-A MR-420R-A MR-385R-A(NZ) MR-420R-A(NZ) - 11 -...
  • Page 13 MR-455R-A MR-455R-A(NZ) - 12 -...

  • Page 14: Name Of The Parts

    NAME OF PARTS MR-385R-A MR-385R-A(NZ) MR-420R-A MR-420R-A(NZ) MR-455R-A MR-455R-A(NZ) - 13 -...

  • Page 15: Trouble Shooting

    6 TROUBLE SHOOTING 6.1 TROUBLE CRITERION OF MAIN PARTS MR-385R-A MR-420R-A MR-455R-A MR-385R-A(NZ) MR-420R-A(NZ) MR-455R-A(NZ) Parts Mounted Components/ Check Method and Criterion Part Name Position Compressor Compressor in MR-385R MR-420R,455R the machine Model DG57C96RAW5 DG66C11RAW5 chamber at the Rated input 106/108(220/240V 50Hz) 117/118(220/240V 50Hz) rear side of...
  • Page 16 Components/ Check Method and Criterion Parts Mounted Position Part Name Fan grill of the freezer compartment. Model UDVH15MA1H Measure the resistance with a tester. Refrigerator (Ambient temperature:Room temperature 15 C ~ 25 fan motor Normal abnormal(faulty) 560+ 10% ( Ω ) Short (0Ω) In the drip tray under Rated input...

  • Page 17: How To Check P.c.boards

    6.2 HOW TO CHECK P.C BOARDS MR-385R-A MR-420R-A MR-455R-A MR-385R-A(NZ) MR-420R-A(NZ) MR-455R-A(NZ) (1) Precautions Unplug unit before checking If the controller P.C. board box is opened with the refrigerator inside cooled, dew will form on the control board, causing trouble such as poor insulation.

  • Page 18: Test Point Diagram Of Main Control Board

    6.3 TEST POINT DIAGRAM OF MAIN CONTROL BOARD MR-385R-A MR-420R-A MR-455R-A MR-385R-A(NZ) MR-420R-A(NZ) MR-455R-A(NZ) - 17 -...
  • Page 19 mode Lighting display Malfunction check self display - 18 -...

  • Page 20: Importance Detail Of Fault Analysis

    6.5 Importance detail of fault analysis 6.5.1 Flow chart of self - check 1) Self - check monitor circuit For show the fault condition of refrigerator and clarify point. Therefore, self - check monitor control is provided that are able to monitor No. of blinking condition with electric circuit and electric part . Before disconnect power plug please confirm LED self - check .

  • Page 21: Disassembly Instructions

    DISASSEMBLY INSTRUCTIONS MR-385R-A MR-420R-A MR-455R-A MR-385R-A(NZ) MR-420R-A(NZ) MR-455R-A(NZ) Unplug the power cord before prepairing and servicing OPERATION PROCEDURE PHOTO Photo 1 1. Remove parts insider the Freezer room (1) Photo 1st Remove Crystal shelf Freezer, Ice corner tray assy, Ice tray, Ice box Crystal shelf F Ice tray Fan Grille...
  • Page 22 OPERATION PROCEDURE PHOTO Photo 6 2. Remove parts inside the refrigerator (1) Remove chilled case door and slide chilled case , remove crystal shelf of refrigerator room , remove the Control panel Thermo dial F Rivets control panel Thermo dial R (Photo 6) (2) Remove lamp cover R Lamp cover R...
  • Page 23 OPERATING PROCEDURE 3. Removing the compressor (1) Detach the drain pan. Compressor (2) Collect gas from the charge pipe on the high pressure side. (3) After collecting gas, cut the charge pipe on the low pressure side. (4) Detach the welded section of the discharge pipe and suction pipe (5) Replace the compressor and the dryer at a time.

  • Page 24: Parts List

    PARTS LIST DOOR, BODY PARTS MR-385R-A MR-385R-A(NZ) MR-420R-A MR-420R-A(NZ) MR-455R-A MR-455R-A(NZ) - 23 -...
  • Page 25 Q'TY/UNIT 455R 385R 420R PART NO. PART NAME SPEC PRICE A(NZ) A(NZ) A(NZ) W ST W ST W ST W ST W ST W ST KIEJ62131 FREEZER POCKET 2 2 2 2 2 2 2 2 2 2 2 2 KIE401115 EGG RACK 2 2 2 2 2 2 2 2 2 2 2 2 KIEJ62118 FREE POCKET...
  • Page 26 ACCESSORY PARTS MR-385R-A MR-385R-A(NZ) MR-420R-A MR-420R-A(NZ) MR-455R-A MR-455R-A(NZ) - 25 -...
  • Page 27 Q'TY/UNIT 455R 385R 420R PART NO. PART NAME SPEC PRICE A(NZ) A(NZ) A(NZ) W ST W ST W ST W ST W ST W ST KIEH79662 BELL MOUTH KIEJ81473 LAMP COVER (F) KIEH79663 FAN GRILLE KIEH79450 ICE CORNER ASSY KIEH79665 DUCT R ASSY KIEH82665 KIEH85665...
  • Page 28 ELECTRICIAL PARTS AND UNIT PARTS MR-385R-A MR-385R-A(NZ) MR-420R-A MR-420R-A(NZ) MR-455R-A MR-455R-A(NZ) - 27 -...
  • Page 29 Q'TY/UNIT 455R 385R 420R PART NO. PART NAME SPEC PRICE A(NZ) A(NZ) A(NZ) W ST W ST W ST W ST W ST W ST KIEH79336 THERMAL FUSE ( DEF ) KIEH85995 EVAPORATOR KIEH79537 HEATER ROOF 240V, 150W NOT KIEHM2392 DEFROST HEATER ASSY DEODORIZER KIEB66397 HEATER COVER KIE402360 LAMP...
  • Page 30 PACKING PART MR-385R-A MR-385R-A(NZ) MR-420R-A MR-420R-A(NZ) MR-455R-A MR-455R-A(NZ) NO STEP ON C.F.B TOP COVER TOP CUSHION MID C.F.B BOX ASSY TOP CUSHION SIDE CUSHION ASSY REFRIGERATOR PACKING COVER C.F.B PALLET BOTTOM CUSHION - 29 -...
  • Page 31 Q'TY/UNIT 455R 385R 420R NO. PART NO. PART NAME SPEC PRICE A(NZ) A(NZ) A(NZ) W ST W ST W ST W ST W ST W ST KIEJ81970 KIEJ82970 KIEJ83970 KIEJ84970 KIEJ85970 KIEJ86970 C.F.B BOX ASSY KIEJL4970 KIEJL5970 KIEJL6970 KIEJL7970 KIEJL8970 KIEJL9970 KIEJ81979 TOP CUSHION KIEH79972 TOP CUSHION MID...
  • Page 32 MITSUBISHI ELECTRIC CORPORATATION HEAD OFFICE : MITSUBISHI DENKI BLDG., MARUNOUCHI,TOKYO 100. TELEX : J24532 CABLE MELCO TOKYO Distributed by BLACK DIAMOND TECHNOLOGIES LIMITED (BDT) Wellington Office (Head Office) Auckland Office Christchurch Office 1 Parliament Street Unit1, 4 Walls Road Suite 2, Level 1...

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