SMEG
Stuck or Unresponsive Temperature Sensing
Freezer display shows temperature but does not change even when internal conditions change.
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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 display/UI board, Frozen or insulated sensor tip, Sensor wiring partially broken, Main PCB not updating display
How to Fix / Troubleshooting
Safety first: Unplug the freezer before accessing sensors or control boards.
- 1. Compare with thermometer: Place an independent thermometer inside and compare readings over several hours. If the display never changes, suspect a sensing or display issue.
- 2. Inspect cabinet sensor: Access the NTC sensor and ensure it is properly positioned and not buried in insulation or ice.
- 3. Test sensor resistance: Measure resistance at different temperatures (e.g., room temperature vs. chilled) to confirm it changes appropriately. Replace if not.
- 4. Check wiring continuity: Verify continuity from the sensor to the main PCB.
- 5. UI or main board: If the sensor and wiring are good, the display or main control board may be faulty and require replacement.
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Repair Difficulty
Medium
3/5
Required Part
Freezer NTC Temperature Sensor
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