How to Troubleshoot & Replace Whirlpool AP6006068 / WP2188820 Thermistor

Simple fix, replace thermistor. One screw, plug it in and I saved $120 repair call. 

Called ApplianceParts about Thermistor, which KitchenAid told me could be the problem. Of coarse KitchenAid could not furnish the part. Talked to sales rep Johnny, asking if they had this particular part. He confirmed the part being in stock and available for shipping. Johnny also confirmed the correct p/n for the model of my refrig. So I decided to go with it, my first order with ApplianceParts. Johnny also convinced me to order a coil cleaning brush which was on sale at the time, which made a lot of sense now that I think about it. Shipping took about 3 days. Received the part and had install in less than 15 minutes. The cost of the Thermistor was less than $30, I had used a local repair service numerous times at a charge of $400-500 each trip. Thanks to ApplianceParts "No More". Great job JOHNNY !!!! 

First I did the obvious: Changed the evaporator fan motor and condenser fan motor. Then I realized there was too little air flow from the freezer to the refrigerator, so I replaced the air baffle assembly. Now everything works again. This should have been a piece of cake, but in the 48" Kitchenaid side-by-side built-in, the baffle assembly is mounted on the side wall of the refrigerator rather than the back wall as the video showed. That means the hole for the rear of the two screws holding the assembly is not directly visible; you have to use a mirror to see the bottom. The hole the screw goes into is too deep to hold the nut with your fingers. Since I didn't have a magnetic nut driver, I attached the nut to the driver socket using a dollop of rubber cement. That way the screw stayed horizontal while I felt around for the hole to screw it into. Once secure, a quick jerk broke the rubber cement. I cleaned off the screw head with a Q-tip. 

I replaced the refrigerator Thermistor. My refrigerator is now operating at normal temperatures.