SMEG
Continuous Run – Control or Sensor Fault
Freezer runs continuously without cycling off, even when internal temperature is very low.
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
Faulty temperature sensor, Stuck compressor relay on PCB, Poor door seal causing constant heat gain, Control board logic error
How to Fix / Troubleshooting
Safety first: Unplug the freezer before accessing sensors or the control board.
- 1. Check actual temperature: Use a separate thermometer to verify the internal temperature. If it is much lower than set point, suspect a control issue.
- 2. Inspect door gasket and closure: Repair any leaks that may cause constant warm air infiltration.
- 3. Test cabinet NTC sensor: Measure resistance and compare to expected values. Replace if out of range.
- 4. Evaluate main PCB: If the compressor relay remains energized despite correct sensor input, the main board may need replacement.
- 5. Power reset: Try unplugging for 10 minutes to clear temporary faults, then monitor behavior.
Advertisements
Repair Difficulty
Medium
3/5
Required Part
Freezer NTC Temperature Sensor
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements