Mitsubishi Electric MR-G50J-SS-NZ User Manual

SERVICE MANUAL
Model
MR-G50J-SS-NZ
NZ············New Zealand
CONTENTS
1. FEATURES ····················································································2
2. SPECIFICATIONS··········································································3
3. WIRING DIAGRAM········································································5
4. OUTLINES AND DIMENSIONS·····················································7
5. REFRIGERANT CIRCUIT······························································8
6. TROUBLESHOOTING···································································9
6-1 FUNCTION OF OPERATION PANEL ···································9
6-2 FLOWCHART OF SELF-CHECK········································14
6-3 BLOCK DIAGRAM OF PRINTED CIRCUIT BOARD ·········17
6-4 AUTO ICE MAKER······························································17
6-5 FLOWCHART OF TROUBLE CRITERION·························19
6-6 TROUBLE CRITERION OF MAIN PARTS··························26
6-7 TEST POINT DIAGRAM OF FILTER BOARD····················31
6-8 TEST POINT DIAGRAM OF CONTROL BOARD···············32
7. NAMES OF THE PARTS ·····························································33
8. DISASSEMBLY INSTRUCTIONS················································34
9. RoHS PARTS LIST······································································41
HOME REFRIGERATOR
Model name
indication
(Inside a door)
No. OA090
NOTE:
• RoHS compliant products have <G> mark on the spec name plate.
OA090-1.qxp 06.7.20 9:54 AM Page 1

Mitsubishi Electric MR-G50J-SS-NZ Specifications

General

Brand	Mitsubishi Electric
Model	MR-G50J-SS-NZ
Category	Refrigerator
Color	Silver
Finish	Stainless Steel
Cooling System	Multi Airflow
Depth	735 mm
Voltage	220-240 V
Frequency	50 Hz
Capacity	494L
Height	1820 mm

Summary

1 FEATURES

2 SPECIFICATIONS

General and Component Specifications

ELECTRICAL PARTS SPECIFICATIONS

Electrical Component Specifications

Details on compressor, motors, heaters, and control components.

3 WIRING DIAGRAM

Schematic Wiring Diagram

Illustrates the overall wiring layout of refrigerator components.

ACTUAL WIRING DIAGRAM

Detailed Component Wiring

Shows specific wiring connections for compartments and boards.

4 OUTLINES AND DIMENSIONS

Dimensions and Installation Requirements

External dimensions, internal layout, and required installation space.

5 REFRIGERANT CIRCUIT

Refrigerant Circuit Diagram

Illustrates the refrigerant flow through the system.

6 TROUBLESHOOTING

Operation Panel and Mode Functions

Explains panel operations, modes, and convenient functions.

Special Panel Modes and Checks

Compressor Speed and Fan Control

Damper Operation and Status

Error History and Door Buzzer System

6-2 FLOWCHART OF SELF-CHECK

Self-Check Troubleshooting Procedure

Guides on performing self-checks and interpreting results for troubleshooting.

Error Codes and Fault Location

Error Display and Fault Location Details

Details on error code display format, check points, and treatments.

Inverter and Compressor Troubleshooting

Troubleshooting specific inverter-related compressor faults.

6-3 BLOCK DIAGRAM OF PRINTED CIRCUIT BOARD

Printed Circuit Board Overview

Shows functional blocks and connections on the PCB.

6-4 AUTO ICE MAKER

Automatic Ice Maker Operation and Circuit

Ice Maker Tests, Maintenance, and Troubleshooting

6-5 FLOWCHART OF TROUBLE CRITERION

Cooling Troubleshooting Flowcharts

Flowcharts for diagnosing cooling issues in refrigerator, slide chilled, and freezer compartments.

Freezer and Compressor Cooling Troubleshooting

Flowcharts for freezer cooling and compressor operation issues.

Inverter Compressor Fault Diagnosis

Detailed diagnosis for inverter-related compressor faults.

Inverter Compressor Fault Diagnosis (Continued)

Continued diagnosis for inverter compressor faults.

Defrost and Fan Motor Troubleshooting

[6] Vegetable compartment

Vegetable Compartment Cooling Troubleshooting

[7] Versa compartment/ Ice making compartment

Versa/Ice Making Compartment Cooling Troubleshooting

6-6 TROUBLE CRITERION OF MAIN PARTS

Main Component Check Criteria

Motor Dampers and Water Pump Check

Heater Component Checks

Thermistor and Three-Way Valve Checks

6-8 TEST POINT DIAGRAM OF CONTROL BOARD

Control Board Test Point Diagram

8 DISASSEMBLY INSTRUCTIONS

General Disassembly Procedures

Removing Compartment Internal Parts

Door adjustment

Door Adjustment Procedures