Kris Z for Model Number PSS26LSRE SS I have replaced my defrost heater and defrost thermostat as they were both bad. However, I am continuing to have occasional defrost cycles where the freezer does not seem to fully exit defrost mode. The condenser seems to turn on, but the evaporator fan does not turn on, so the upper part of the freezer remains about 35 - 40 degrees, leaving the ice to slowly melt. It seems to stay this way for hours, until I unplug and plug it back in. Once it is reset, it functions fine, the fan turns on and the freezer quickly cools to single digit temperatures, and often even seems to go through a defrost cycle or two properly. I replaced the mainboard a few days ago, but I am still the same problem. I also *tried* to replace the evaporator thermistor. However, when I went to replace it, I discovered the old one wasn't attached to anything, the wires were simply dangling, and I don't see any wires that it could attach to. The old thermistor seems to be perfectly fine, according to my ohmeter, but I don't see anything to wire it to. Is it possible that my freeze/evaporator just doesn't use a thermistor? Is there anything else I can try/replace?
Answer Kris, Your refrigerator does use the thermistor and should have wires that go back to where the fan motor would connect. The pins go into 2 openings of the gang plug that the evaporator fan motor goes to and plugs into the rear freezer wall. If the fan was ever replaced this may be the cause for the issue if the wrong fan was installed or if they installed the correct fan but did not reconnect the wires then this would be the issue. The fan motor that you would need that has the thermistor with it is part number WR60X10074. Read More... Answered by AppliancePartsPros.com | Wednesday, May 7, 2014