How to Troubleshoot & Replace Ge AP3185407 / WR55X10025 Refrigerator Temperature Sensor

Change the temperature senso 

Replaced the Temperature Sensor and the Defrost Limiter Thermostat. Works great now! 

Common theme on the blogs was thermistors and or defrost heater/thermostat. Ran self-diagnostics which turned on defrost heater which was fine. All five thermistors indicated ok on diagnostic also, but I read more than one time "replace the thermistors no matter what if your FF section isn't cooling". So I ordered all five thermistors and defrost limiter thermostat. Received all in 48 hours (great shipping service), took me about three hours to replace all thermistors and thermostat just as excellent how-to video indicated. Set to factory presets of 0 and 37 degrees. Next morning came downstairs, actual temperature: 0 and 37 degrees! Lowered FF section to 35 (wife's preference), reefer went right down to 35 and has stayed there since. Also had the common melting ice problem in ice maker which appears to be resolved by this repair. An hour or two of diagnostics, few hours to repair, 60 bucks and it's performing better than ever. Very pleased with the results. 

I watched the video and ordered the temperature sensor. The video was extremely easy to follow. It took about 15 minutes to fix and cost less than $20 for everything. If you can strip wires (the hardest part of the job) then you can fix this yourself. Before finding this website, I called a repair company and the guy they sent couldn't find a probably so he billed me for cleaning the coils (he said that was the problem). That was a waste of money. For any future problem, I will check this site and fix it myself. I replaced this part about a month ago and the freezer has worked perfectly ever since. 

The refrigerator evaporator fan would begin to make noise from hitting ice build up, then the temperature would rise to around 50 degrees and the fan would stop. Replaced the fresh food evaporator temperature sensor, which is housed in a block attached to the coils, note this part is not shown on the parts diagram. Thawed ice, disassembled, cut out the old sensor and spliced in a new sensor using waterproof butt splices. One week in and still working good, no ice build up and temps are as set. 

I replaced both temperature sensors in the refrigerator section and also replaced the damper assembly. The door on the old damper assembly was broken and that was probably my main problem with the freezing food. 

Replaced all three thermistors (temp sensors). Works great now. Cheap fix, but it was a bit of a pain to access the wires in the lower freezer section, due to them being too short and cramped space, but it's doable. 

Went to the appliance parts pro website to figure out why I was having the problem, found the problem and ordered the parts. Installed the parts and it is now working as it should. 

Ordered parts and replaced 

This refrigerator has a second evaporator in the fresh food section. This evaporator has a plastic cover assembly (WR17X11915) that includes two fan motors and styrofoam insulation held in place. Unplug refrigerator, wait 2 hours until ice melted, unmount plastic cover assembly on refrigerator side, cut wires of temperature sensor, replace with a new temperature sensor, make sure to keep perfect isolation from humidity on terminal conectors, mount new cover assembly, and that's it, wait 24 hr to have appropiate temperature. You reaffirmed me that there are still companies out there focused on great service, and I had one of the best experiences ever.