Display shows ER 22, refrigerator may not start or may shut down unexpectedly.
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Possible Causes
How to Fix / Troubleshooting
Safety: Disconnect power before accessing the control board.
This code indicates an internal error in the main control board.
- Power cycle: Unplug the refrigerator or switch off the breaker for at least 10 minutes, then restore power. Observe if ER 22 returns.
- Check supply voltage: Ensure the outlet provides stable voltage within specification (typically 120V AC). Avoid using extension cords or power strips.
- Inspect control board: Remove the rear access cover to the main PCB. Look for burnt components, discoloration, or a burnt smell. Verify all connectors are fully seated.
If ER 22 persists, the main control board must be replaced. Due to the risk of damage and need for correct part matching, professional service is recommended.
Repair Difficulty
Required Part
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