LO
AEG
Low Temperature / Overcooling Condition
Display shows LO or a very low temperature with alarm, interior extremely cold
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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
Stuck relay on main PCB powering compressor continuously, Shorted temperature sensor reading too warm, Faulty thermostat or control module, Door switch not detected causing continuous fan operation
How to Fix / Troubleshooting
Safety: Unplug the freezer before accessing controls or wiring.
Steps:
- 1. Confirm actual temperature: Place a separate freezer thermometer inside to verify if the displayed temperature is accurate.
- 2. Check sensor: Test the freezer NTC sensor for correct resistance. Replace if readings are incorrect.
- 3. Inspect control board: Look for a stuck or welded relay on the main PCB (signs of heat damage). If found, replace the board.
- 4. Door switch: Ensure the door switch operates correctly (light turns on/off). A failed switch can affect control logic.
Persistent overcooling usually indicates a control fault; a technician may be required to replace the PCB.
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Repair Difficulty
Hard
4/5
Required Part
Main Control PCB
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