Brian for Model Number WRF560SEYB04 Hello. The evaporator in my freezer keeps freezing up every 2 weeks. The ice/frost hits the evaporator fan making a loud noise. The defrost thermistor on the evaporator tested good. I even wrapped it in aluminum foil. (A tip I read on here). The defrost heater didn't show continuity but the resistance check was within range at room temperature. The thermal fuse is good and there are no leaks around the door. I replaced the main control board at the rear of the refrigerator. The evaporator is still freezing up. Am I missing something? Thanks.
Answer Brian, when testing the defrost circuit from the main control using the brown wire at the connection P2 pin 7 to the white wire at connection P1 pin 2, there should be a reading between 30 to 42 Ohms. If the resistance is not being measured through the wires but they were at the defrost heater, and the thermal fuse had continuity, then there is a wire failure. If the resistance is measured from the wires, the next step would be to inspect just under the evaporator to identify if the defrost drain is clear. If there is ice in the pan under the evaporator, the defrost drain would need to be cleared. Read More... Answered by AppliancePartsPros.com | Wednesday, May 18, 2022