De Dietrich Thermostat or Temperature Sensor Misreading

Refrigerator runs constantly and is too cold; food in the refrigerator compartment may freeze.

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

Refrigerator NTC sensor out of calibration, Sensor not properly positioned in airflow, Faulty main PCB interpreting sensor data, Stuck relay driving compressor continuously

How to Fix / Troubleshooting

Safety first: Unplug the appliance before accessing sensors or the control board.

Steps:

  • 1. Confirm settings: Make sure the temperature is not set to the coldest level and that any "super cool" or "fast freeze" functions are turned off.
  • 2. Check sensor placement: Locate the refrigerator NTC sensor and ensure it is clipped correctly to the liner or duct, not hanging near the evaporator where it reads too cold.
  • 3. Test the sensor: Measure its resistance at known temperatures and compare to specifications. Replace if out of range.
  • 4. Inspect the PCB: If the sensor is good but the compressor never cycles off, the control board relay may be stuck. Board replacement is required.
Advertisements

Repair Difficulty

Medium 3/5

Required Part

Refrigerator Compartment NTC Temperature Sensor
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements