FIX Appliances offers reliable, same day refrigerator maintenance – defrost thermostat repair services in Toronto, the GTA and Simcoe County and Surrounding Areas!
Whirlpool Gold. Fridge not cooling
If the refrigerator is not defrosting, the defrost thermostat might be defective.
If the thermostat is defective it may not be able to sense the temperature of the coils and then won’t turn on the defrost heater.
The defrost termination thermostat is basically a small electrical switch which is actuated by temperature. Depending on the temperature it is, it will either have no resistance and be good or will have infinite resistance and be defective. At room temperature it will usually be open and only close when it gets cold. How cold it has to be to close will depend on its particular calibration but usually near or below freezing point.