How To Repair A Freezer That’s Too Cold
- Rated as REALLY EASY
- 2 step by step videos
Temperature Control or Thermostat
If your freezer is too cold or doesn’t shut off even though the desired internal temperature has been reached, you may have a problem with the temperature control thermostat. The rotary dial thermostat or temperature control uses a capillary tube and bulb sensor that attaches to the inside liner of the freezer to monitor the temperature, and also has a set of internal electrical contacts that supply power to the compressor circuit. As the temperature at the sensor bulb drops, a pressure change occurs at the control and the switch contacts will open and shut off the compressor. If the contacts weld or stick closed, or if the sensor bulb is damaged, the compressor will continue to run regardless of the temperature. If the compressor is cycling on and off normally but the temperature is still too cold, the thermostat my no longer be properly calibrated and will need to be replaced. Inspect the sensor bulb to ensure that it is properly positioned before replacing the control.
User Control or Electronic Display Board
If your electronic display model freezer seems to be too cold and doesn’t shut off even though the desired internal temperature has been reached, then you may have a problem with the user control display board. On some models this electronic control is used to display, monitor, and adjust the internal temperature of the freezer, as well as to control the operation of the compressor, evaporator fan motor and defrost heater circuits. If the control has failed, it may not detect the temperature correctly and cause the compressor and evaporator fan motor circuits to remain on too long. You should also check the thermistor temperature sensor for a defect before you condemn the control.
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