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Unstable Temperature Control
Freezer interior temperature fluctuates widely; sometimes too warm, sometimes too 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
Faulty mechanical thermostat, Intermittent NTC sensor connection, Main control PCB relay sticking intermittently
How to Fix / Troubleshooting
Safety first: Unplug the freezer before accessing the thermostat or control board.
- Monitor with thermometer: Place an accurate thermometer inside and log temperatures over 24 hours to confirm fluctuations.
- Check sensor/thermostat connections: Inspect the wiring to the thermostat (dial models) or NTC sensors (electronic models) for loose or corroded connectors.
- Replace suspect control: If tapping the thermostat or control housing causes the compressor to start/stop, the control is likely faulty. Replace the mechanical thermostat or main control PCB as appropriate.
Stable temperature is critical for food safety; if you cannot achieve it, seek professional service.
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Repair Difficulty
Hard
4/5
Required Part
Mechanical Thermostat
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