Edwin for Model Number 79572053114 model ser. no305kr02393 refri works proper defrost and stays at assigned temp (defrost perfectly) i know that refri works on a different cycle than freezer. the freezer has different coil ( defrost) checked heating coil in freezer resistance read 0 on Rx1 continuity. Don't have a schematic so does the freeze have a complete circuit for defrost. which means half of control board could be bad. how to test both circuit to tell which is bad. thanks getting on nerves.
Answer Edwin, Unfortunately, we do not have the wiring schematic on this unit but you would test the defrost heater, defrost thermistor to make sure that they are good and if they are good then you would replace the control board. The control board will control each defrost circuit differently. The defrost heater should have a resistance reading and if it is showing 0 resistance then the heater would be faulty. The thermistor reading should be around 5K at room temperature and there is a fuse next to the filter that should have continuity. Read More... Answered by AppliancePartsPros.com | Wednesday, September 2, 2020