Grundig
Temperature Sensing / Calibration Issue
Freezer temperature display inaccurate compared to a separate thermometer.
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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
Aging or out-of-tolerance NTC sensor, Poor sensor placement or contact with liner, Control board calibration drift, Thermometer placement error
How to Fix / Troubleshooting
Safety first: Unplug the freezer before accessing sensors.
Steps:
- Verify with reliable thermometer: Place a quality freezer thermometer in the middle of the compartment away from walls and wait several hours.
- Check sensor: Test the freezer NTC sensor resistance and compare to the manufacturer's curve. Replace if significantly out of tolerance.
- Sensor placement: Ensure the sensor is correctly clipped to the liner or evaporator as designed, not hanging loose.
- Control board: If the sensor is correct but readings remain inaccurate, the main PCB may have calibration issues and may need replacement.
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Repair Difficulty
Medium
3/5
Required Part
Freezer NTC Temperature Sensor
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