Café
Overcooling / Temperature Regulation Failure
Freezer is too cold; food is excessively hard and shows signs of freezer burn
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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.
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Possible Causes
Thermistor out of calibration, Stuck closed temperature control relay on main board, Incorrect temperature setting, Failed user interface sending wrong setpoint
How to Fix / Troubleshooting
Safety first: Unplug the freezer before accessing internal sensors or control boards.
- Check temperature setting: Ensure the control is not set to the coldest level. Adjust to the recommended setting and wait 24 hours.
- Verify with thermometer: Place an accurate thermometer in the freezer and compare to the display. If the actual temperature is much lower, suspect a sensor or control issue.
- Test freezer thermistor: Access the thermistor and measure its resistance at a known temperature. Replace if out of spec.
- Control board evaluation: If the thermistor is good but the compressor runs excessively, the main control board may have a stuck relay or logic fault and should be replaced.
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Repair Difficulty
Medium
3/5
Required Part
Main Control Board
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