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

First I taped up the opening on the "broken" Damper until the new Damper Assembly arrived. That stopped the refrigerator side from dropping below 32. I ordered the part Friday am and it arrived Saturday pm. My model refrigerator was "slightly" more work than the video shows. After getting the new damper installed, the refrigerator was working perfectly again. Looking at the old damper I could see that the plastic damper door had broken loose from its mount on the motor that drives it open and close. 

Replaced both defrost limiter thermostat, temperature sensor 

I went online and found Appliance Parts Pros had the parts I needed. I replaced all three temp. sensors. It now cycles and I can control the freezer and fresh food compartment. I now have the water dispenser working! Appliance parts store was quick and efficient. Will do business with them again. LOL 

Two month (probably at least) backlog to get new replacement. Found this website and called. On hold for only 1 minute. Discussed problem with associate and she was very helpful. Told me could be problem with 1 to 3 parts totaling $130 plus $11 for shipping. Decided to order all three as I could return what I didn't use. Parts arrived in 2 days. Parts: Temp sensor, defrost heater, and defrost thermostat. Since I had to pull out back panel to get to all three parts I decided to replace all three. Tight spaces to work in resulted in some frustration and choice words but got the job done in just under 4 hours. Flipped breaker back on and in less than 3 hours I heard ice drop which of course meant it was freezing again. The next morning panel readings for temps were 0 for freezer and 37 for refrigerator. Perfect. 

I was very fortunate to find your website as I was looking for help in trying to understand how my refrigerator works to cool the fresh food section. When I clicked on the item I thought I needed to replace and found a video showing how to disassemble and reassemble the part, I was blown away with the professionalism that you have put into developing this site. I ordered the parts (a new damper assembly), installed it and two days later after the temperatures stabilized, I have a great functioning refrigerator. I did not need to install the temperature sensors. Thanks for the great website!!! Keep up the good work!!! 

New temperature sensor on the evaporator was just was it needed. Google is a wonderful thing. I found the problem online along with a detailed description of how to diagnose the problem and replace the bad part, and where to get the part along with the part number. What I was worried would end up with buying a new fridge ended up just defrosting the freezer (and there was a lot of it behind the panel on the evaporator), cutting 2 wires and connecting the new sensor. The long part was defrosting. It took longer to put everything back together than to replace the part. The directions I found recommended a crimp connector for the part (which would probably be fine), but I decided to solder it instead. Ended up being an extremely easy fix and the fridge works better than it has in a while. Now if I could just figure out how to keep the water despenser from freezing up... 

About a month ago the freezer and fridge both started warming up. Took the back off and it was filthy and full of water. Cleaned off all the dust with vacuum and what I could not get I rolled the unit over to the garage service door and completely blew it clean with compressed air. Dried everything with a box fan. Plugged er in and she was running like a red assed monkey for about a month then started warming up same way. This time freezer was icing up badly. Figured the defrost cycle was not working so I changed the defrost heater (which was completely burned up and black). While I was in there also changed as a precautionary the control thermostat and evaporator temp sensor. There are three such temp sensors living on board this unit so I ordered two and kept the other one in abeyance for future issues. The unit is now running great. Wife is happy. Life is once again in harmony and balance!! PS. Also had ordered some other compressor related parts which I returned. Carpe Diem. 

In the Monogram 48" there are two sensors so I opted to replace the lower one and see the results. It fixed the issue and now I have a spare sensor. 

I change the defrost thermostat and the temperature sensor. 

I changed out the defroster unit and it worked fine. Later I thought I might also need a defroster thermostat and possibly temps sensors. Thus, I bought them "just in case". I have not installed them as the defroster unit seemed to have solved the problem. ApplicancePartsPros.com is an excellent source of parts and advice. I am glad I found this website.