Sharp
Overcooling – Thermostat or Sensor Miscontrol
Freezer is too cold; items are rock hard and ice forms heavily on packages even at moderate settings.
Advertisements
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.
Advertisements
Possible Causes
Stuck-closed mechanical thermostat, Shorted temperature sensor reading too warm, Main control PCB not cycling compressor off, Incorrect temperature setting or fast-freeze mode left on
How to Fix / Troubleshooting
Safety: Unplug before accessing thermostat or control board.
Steps:
- Check settings: Ensure fast-freeze/super-freeze is off and the temperature is set to a normal level (around -18°C).
- Mechanical thermostat test: Slowly turn the thermostat knob from coldest to warmest. You should hear a click as it turns the compressor off. If no click and compressor never stops, replace the thermostat.
- Sensor test: On electronic models, test the freezer thermistor as described under E1. Replace if readings are out of range.
- Control board: If thermostat/sensor are good but compressor runs excessively, the main PCB relay may be stuck. Replace the board if confirmed.
Advertisements
Repair Difficulty
Medium
3/5
Advertisements