frig does not shut off. Because it runs 24/7 the cooling coil freezes up and has to be defrosted every 3 days. i have replaced the defrost thermostat, evaporator motor and the thermistor. no change. what do i try next motherboard ?? i see similar problems but no answer on what worked to fix problem. Help
I would replace the pc board in the back AP4334000, it controls defrost.