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Compressor only statrs in diagnostic mode. I’m thinking thermistor or control board may be the issue? However, if fridge displays correct temperatures for fridge and freezer, would that mean that thermistor works just fine? Anything else that may be broken? I replaced compressor relay just in case. It’s a kitchenaid fridge, with freezer on the bottom.
Hi @pippo2001 , According to the tech sheet: The Control Board adapts the compressor run time between defrosts to achieve optimum defrost intervals by monitoring the length of time the defrost heater is on. After initial power up, defrost interval is 4 hours compressor run time. Defrost occurs immediately after the 4 hours. The circuit shows a defrost terminator that disconnects the heater but the actual part is not shown in any parts list. You may have to trace the wires from the heater and the control board to find it. I’m wondering if the control board thinks that the defrost hasn’t finished yet and therefore won’t start the compressor. maybe try service test #101 Defrost Heater & Defrost Circuit
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