Kevin for Model Number KBRS19KTSS01 I have a Kitchenaid fridge model #kbrs19ktss01 The coils in my freezer builds up over time, which makes my fridge warm as there is no air circulating from the freezer to the fridge once the ice is built up. But my freezer remains cold enough for the food to be frozen. Here is the situation. For example, it happened late in the summer, I defroze the coils but the frost came back about 2 weeks later. So I gave it another go thinking I was unlucky. It came back another 2 weeks later. At this point, I decided to check the parts related to the defrost system. I used a multimeter and both the defrost heater and the thermostat checked OK. Also, I used the service diagnosis test from the control panel and the Thermostat test gave me an "S" for short which means the circuit is closed (and is OK). At this point, I thought I had "unstick" the thermostat bi-metal and should be good to go. So I unfroze my coils one more time... But now the freezing came back but it took about 2 months, instead of 2 weeks. Before removing the freezer back panel again, I decided to run the diagnosis test on the THERMISTOR in the freezer this time. As per the service sheet, it should read as a "P" for Pass, but it gave me an O for Open, indicating that the sensor is bad and would need to be replaced... THis is a part that I have not tested with a multimeter... Bottom line, I would really like to avoid ordering the costly control panel, but do you think the thermistor could be at fault for the ice-build up? Can I trust the result from this service diagnosis test from the control board I did and indicating that the thermistor is faulty? Thanks for any advice!
Answer Hello Kevin. If the thermistor failed the test, it will need to be replaced on the unit. Read More... Answered by AppliancePartsPros.com | Wednesday, December 16, 2015