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Refrigerator not defrosting

Refrigerator not defrosting The parts or conditions listed below for the symptom Refrigerator not defrosting are ordered from most likely to least likely to occur.   Cause 1 – Defrost control board. The defrost control board determines how often the defrost cycle is run. If the board is faulty, the refrigerator will not enter the defrost cycle. Before replacing the defrost control board, make sure the heater and the defrosting thermostat are functioning correctly. If they are, it’s...

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