Brand: MITSUBISHI ELECTRIC
Category: Refrigerator
Document Type: Parts/Service
Language: EN
Parts/Service for MR-B46Z
Uploaded: Nov. 21, 2025, 8:30 p.m.
Manual Publish Date: 2016-05-01
This manual provides service information for the MITSUBISHI ELECTRIC MR-B46Z refrigerator. It covers specifications, wiring diagrams, dimensions, refrigerant circuits, troubleshooting, parts lists, and disassembly instructions. The operation panel functions, temperature adjustments, service diagnostics, door alarms, and various maintenance procedures are detailed.
Troubleshooting and error codes
| Trouble | Possible Cause | Remedy |
|---|---|---|
| General Operations | ||
| Refrigerator is not operating. | Power supply is not connected. | Check the power plug and outlet. |
| Refrigerator is not plugged in. | Plug in the power cord. | |
| Fuse has blown or circuit breaker has tripped. | Check fuse or breaker. | |
| Power failure. | Check if power is supplied to the house. | |
| Demonstration mode is set. | Release demonstration mode. | |
| Temperature setting is OFF. | Set temperature. | |
| Door is not closed. | Close the door. | |
| Food is not cooled/frozen sufficiently. | Doors are not closed. | Close the doors. |
| Too much food stored. | Reduce the amount of food. | |
| Food placed too close to the air outlet. | Rearrange food. | |
| Temperature setting is too high. | Lower the temperature setting. | |
| Door opened too frequently or for too long. | Minimize door opening. | |
| Refrigerator is exposed to direct sunlight or heat source. | Relocate refrigerator. | |
| Fan motor failure. | Refer to "Self-check and error display method". | |
| Refrigerant leak. | Refer to "Refrigerant circuit". | |
| Compressor failure. | Refer to "Compressor". | |
| Excessive noise or vibration. | Refrigerator is not level. | Adjust the leveling feet. |
| Objects are touching the refrigerator. | Ensure adequate clearance. | |
| Fan motor or compressor issue. | Refer to "Self-check and error display method". | |
| Interior light is not working. | Light bulb is loose or burnt out. | Check and tighten or replace the bulb. |
| Door switch malfunction. | Check the door switch. | |
| Automatic ice making is not working. | Ice maker is not turned ON. | Turn ON the ice maker. |
| Water supply is not connected. | Connect water supply. | |
| Ice tray is not set properly. | Set the ice tray correctly. | |
| Ice maker malfunction. | Refer to "Self-check and error display method". | |