Brand: Mitsubishi
Category: Refrigerator
Document Type: Manual
Language: EN
Manual for MR-G50J-SS-NZ
Uploaded: Nov. 21, 2025, 9:13 p.m.
Manual Publish Date: 2006-07-01
1. FEATURES
1. Vegetable compartment
- Mechanism: Two LED lights (375nm UV LED) on the back and bottom of the compartment stimulate the self-defense function of vegetables, increasing polyphenol by irradiating UV light. The lighting is not controlled by door opening/closing.
- Effect: Polyphenol in vegetables increased by 10% compared to purchase, and retained polyphenol was 1.2 times more than in refrigerators without light radiation. Uses specific wavelengths for "photosynthesis" and "polyphenol increase".
2. "Auto Door Shut" function
Automatically closes the door when its opened angle is less than 20 degrees.
3. Easy Access Vegetable room, Easy Access Freezer Room
- Slide rollers enable smooth movement of vegetable and freezer rooms.
- Double rails allow rooms to be pulled out completely for easy access.
2. SPECIFICATIONS
Details on power supply, capacity, dimensions, insulation, cooling system, defrost system, temperature control, and included accessories.
3. WIRING DIAGRAM
Includes Skelton Wiring Diagram and Actual Wiring Diagram for the refrigerator.
4. OUTLINES AND DIMENSIONS
Provides detailed dimensional drawings and required space for installation.
5. REFRIGERANT CIRCUIT
Illustrates the refrigerant circuit with components like compressor, evaporator, condenser, and capillary tubes.
6. TROUBLESHOOTING
Covers operation panel functions, demonstration mode, temperature adjustment, self-check procedures, error codes, and damper operation.
6-1 FUNCTION OF OPERATION PANEL
Explains normal operation, quick mode, eco mode, convenient functions (cooking timer, child lock), ice making stop, and LED ON/OFF for bacteria removal. Also provides operating mode and temperature ranges.
6-2 FLOWCHART OF SELF-CHECK
Guides through self-check and error display methods to identify malfunctions.
6-3 BLOCK DIAGRAM OF PRINTED CIRCUIT BOARD
Shows the connections between the control board and various parts of the refrigerator.
6-4 AUTO ICE MAKER
Details the ice making cycle, automatic ice maker circuit, and troubleshooting for ice making.
6-5 FLOWCHART OF TROUBLE CRITERION
Provides flowcharts for troubleshooting issues like excessive cooling, no cooling, and compressor not operating.
6-6 TROUBLE CRITERION OF MAIN PARTS
Lists specific parts and their associated troubles, checks, and treatments.
6-7 TEST POINT DIAGRAM OF FILTER BOARD
Illustrates test points on the filter board.
6-8 TEST POINT DIAGRAM OF CONTROL BOARD
Illustrates test points on the control board.
7. NAMES OF THE PARTS
Lists and identifies various parts of the refrigerator.
8. DISASSEMBLY INSTRUCTIONS
Provides step-by-step instructions for disassembling components of the refrigerator.
9. ROHS PARTS LIST
Lists electrical and door parts with their part numbers.
Troubleshooting and error codes
| Display | Error code | Trouble | Detecting method (*3) | Check point | Treatment | Control |
|---|---|---|---|---|---|---|
| LCD | E 01 | Communication error of operation panel | When the following communication errors occur between control board and operation panel: They transmit and receive data that has nothing to do with settings. They cannot transmit and receive data each other for about two seconds. | 1. Connector CN8K, CN7S on control board, 4-pin relay connector (hinge) 2. 4-pin connector on operation P.C. board |
Repair the contact failure. | Keep the same operation as the one before the communication error has occurred. |
| E 02 | Communication error of inverter | When abnormality is found in the communication between refrigerator control circuit and inverter control circuit in control board. (When they do not transmit and receive data for 10 seconds.) | 1. Connector CN8K, CN7S on control board, 4-pin relay connector (hinge) 2. 4-pin connector on operation P.C. board |
Replace the control board. | Compressor OFF. | |
| E 03 | Trouble of model judgement | When the model of control board is different from the one of operation P.C. board. | 1. Check the model name of control board 2. Check the operation p.c. board. |
Replace | Keep operating the unit, and conduct error code indication only. | |
| E 10 | Trouble of ice making tray thermistor | When there is a short or open circuit in the ice making tray thermistor. | 1. Connector CN7S on control board, Ice gear box 6-pin relay connector, 8-pin relay connector 2. Check the resistance of thermistor. |
Repair the contact failure. | When the compartment door contact has been closed for 3 hours and when freezer compartment thermistor is -10°C or less, ice-detecting operation starts. | |
| E 11 | Trouble of freezer compartment thermistor | When there is a short or open circuit in the freezer compartment thermistor. | 1. Connector CN7S on control board. 6-pin relay connector 2. Check the resistance of thermistor. |
Repair the contact failure. | After 10 minutes off, the compressor repeats 30-minute ON and 20-minute OFF. | |
| E 12 | Trouble of defrost thermistor | When there is a short or open circuit in the defrost thermistor. | 1. Connector CN7S on control board. 2-pin relay connector 2. Check the resistance of thermistor. |
Repair the contact failure. | The defrost heater won't be turned ON. | |
| E 13 | Trouble of refrigerator thermistor | When there is a short or open circuit in the refrigerator compartment thermistor. | 1. Connector CN7S on control board. 4-pin relay connector 2. Check the resistance of thermistor. |
Repair the contact failure. | Synchronize the open/close status of R damper with that of C damper. | |
| E 14 | Trouble of chilled compartment thermistor | When there is a short or open circuit in the chilled compartment thermistor. | 1. Connector CN7S on control board. 6-pin relay connector 2. Check the resistance of thermistor. |
Repair the contact failure. | Synchronize the open/close status of C damper with that of R damper. | |
| E 15 | Trouble of versa compartment thermistor | When there is a short or open circuit in the versa compartment thermistor. | 1. Connector CN7S on control board, 6-pin relay connector 2. Check the resistance of thermistor. |
Repair the contact failure. | •When S-compartment is used as "freezer": S-damper is open when compressor is turned on, S-damper is closed when compressor is turned off. •When S-compartment is used other than "freezer": S-damper remains open for the first 3 minutes and then closed for the rest of time. S-compartment: Versa(select) compartment. When R-damper is open, V-heater is turned on. When R-damper is closed, V-heater is turned off. |
|
| E 16 | Trouble of vegetable compartment thermistor | When there is a short or open circuit in the vegetable compartment thermistor. | 1. Connector CN7S on control board, 4-pin relay connector 2. Check the resistance of thermistor. |
Repair the contact failure. | •When S-compartment is used as "freezer": S-damper is open when compressor is turned on, S-damper is closed when compressor is turned off. •When S-compartment is used other than "freezer": S-damper remains open for the first 3 minutes and then closed for the rest of time. S-compartment: Versa(select) compartment. When R-damper is open, V-heater is turned on. When R-damper is closed, V-heater is turned off. |
|
| E 17 | Trouble of ice making compartment thermistor | When there is a short or open circuit in the ice making compartment thermistor. | 1. Connector CN7S on control board, 6-pin, 9-pin relay connector 2. Check the resistance of thermistor. |
Repair the contact failure. | •When ice making compartment is used as "refrigerator", synchronize I-damper with R-damper. •When ice making compartment is used as "ice mak- ing", synchronize I-damper with F-damper. |
|
| E 18 | Trouble of outside air thermistor | When there is a short or open circuit in the outside air thermistor. | 1. Connector CN2A on control board Defrost heater plug and receptacle, 1-pin relay connector Thermal fuse 4-pin, 8-pin relay connector 2. Check the resistance of defrost heater. 3. Check the continuity of thermal fuse. |
Replace the operation P.C. board. | Compressor is activated at "Speed-level 2." | |
| E 30 | Trouble of defrost heater (*6) | When defrosting is not finished in 2 hours. | 1. Connector CN4D on control board, Refrigerator fan motor 6-pin relay connector 2. Check refrigerator fan motor operation. |
Replace the operation P.C. board. | The defrost heater is stopped and if the next defrosting finishes in 2 hours, the error code will disappear. | |
| E 31 | Trouble of refrigerator fan motor | •When motor doesn't rotate even though power is on. •When the waveform, which indicates the rotation times of motor, cannot be detected. |
1. Connector CN4D on control board, 4-pin connector, 4-pin relay connector 2. Check machine chamber fan motor operation. |
Replace the operation P.C. board. | •3 minutes later, the refrigerator fan motor is reactivated to be checked. •Until the fan motor gets to operate correctly, the buzzer sounds every time the door is closed. |
|
| E 32 | Trouble of machine chamber fan motor | •When motor doesn't rotate even though power is on. •When the waveform, which indicates the rotation times of motor, cannot be detected. |
1. Connector CN4D on control board, 4-pin connector, 4-pin relay connector 2. Check machine chamber fan motor operation. |
Replace the operation P.C. board. | •3 minutes later, the machine chamber fan motor is reactivated to be checked. •Until the fan motor gets to operate correctly, the buzzer sounds every time the door is closed. |
|
| E 33 | Trouble of ice maker gear box | When the gear box operation is not finished in 30 seconds. | 1. Connector CN8K on control board, Ice gear box 6-pin relay connector, 8-pin relay connector 2. Ice gear box frozen point 3. Check the trouble of the ice gear box with the ice making test operation. |
Replace the contact failure. | 100 minutes later, the gear box is reactivated to be checked again. | |
| E 34 | Clogging of refrigerant pipe or trouble related to compressor | (T0: Defrost thermistor temperature at power input, T1: Defrost thermistor temperature when 15 minutes have passed from the power input) T0 ≤ T1. (*5) | Check the compressor and the pipe. | Replace | When cooling operation returns to normal condition, the display of error code disappears. | |
| E 41 | Trouble of electromagnetic three-way valve | When the defrost thermistor reads -10°C or above in five minutes after the compressor's startup.(*5) | Connector CN9D on control board 5-pin connector in machine chamber | Repair the contact failure. | Check the operation of electromagnetic three-way valve and then open the valve. | |
| E 50 | Trouble of inverter (*6) | When there is any trouble in the circuit which detects current of compressor. | Refer to "Compressor does not operate" at page 21. | Replace the control board. | ||
| E 51 | Trouble of bus-bar voltage (*6) | •When the range of bus-bar voltage is not approx. DC 260-390V. | Refer to "Compressor does not operate" at page 22. | Replace the control board. | ||
| E 52 | Trouble of inverter software reset function | When the inverter driving software malfunctions. | Unplug the power cord and then plug it in 10 minutes. Check the error code by performing the ice making test operation. £52 display again. No error code display | Replace the control board. | Explanation to customer | |
| E 53 | Trouble of startup synchronization or overcurrent detection | •When there is no current at compressor startup. •When phase current exceeds 5.5A at compressor startup. •When phase current exceeds 3.3A during compressor operation. |
Start Disconnect 6-pin connector in machine chamber to check resistance between each terminal of ①,② and ③: Are they approx. 9.3Ω (20℃)? Yes *Replace lead wire assembly C. | No | Exchange the unit | |
| E 54 | Trouble of power supply voltage (*6) | (*6) When current of 5.3A or more runs into the bus-bar of control board. •When bus-bar voltage (full wave voltage) is DC 390V or above in power input. |
1. Different voltage of power supply outlet 2. Trouble of relay in the circuit on the control board |
Replace the control board. | Refrigerator compartment room light OFF Heaters. OFF | |
| E 55 | Trouble of control board (*6) (EEPROM related trouble) | EEPROM (IC11M) accumulates data necessary for control. •When the data are not input accurately. •When microcomputer cannot read the data. |
Refer to "Compressor does not operate" at page 22. | Replace the control board. | When abnormality occurs in power input, the compressor is suspended for 10 minutes. When abnormality occurs in normal operation, the compressor keeps operating. | |
| E 56 | Defective wiring continuity of the compressor board Trouble of control board Trouble of compressor error occurred before the compressor is activeted. | (1) or (2) Defective connection of connectors related to compressor (board-side, relay, comp-side) (2)Overcurrent detection error occurred before the compressor is activeted. |
1.Locate the trouble and deside the treatment (1) Defective connector connections. (board-side, relay,comp-side) (2) Resistance of compressor's winding 2.Flowchart of troubleshooting |
Check Treatment |