How to Troubleshoot & Replace Whirlpool AP6022829 / WPW10548509 Temperature Sensor

The water flow during the fill step appeared extremely low. Confirmed the unit would make proper ice if I manually added more water. Through online research, found this was a common fail mode for this valve (low flow, continuous flow or no flow). During this search, the following video (https://youtu.be/By-i3gVMOdI) outlined how to use the onboard diagnostics which indicated the water level sensor wasn't working. The sensor hangs down in the water reservoir and is accessed by removing the water reservoir, then the bracket that holds the sensor and recirculation pump. The water inlet valve is located in the front left corner of the unit, below the ice bin, next to the condenser. The valve has one inlet and one outlet connection. To remove the lines, push on the ring that surrounds the line. Only a little water comes out when you disconnect the lines, assuming you turned the water off! Take note of how far the lines were inserted into the valve, reinsert these into the new valve by the same amount. After replacement the water flow was strong and filled the reservoir near the top of the overflow. Unit is back to making thick, clear ice again. I haven't tested the sensor, but I know it's working because the reservoir now fills in 35s whereas before it would run the max 2m and still not completely fill. A 1/4" nut driver removes all screws, but I did need a wrench to loosen the bottom door bracket to remove the protective panel to access the condenser/water inlet valve area. I removed some of the plastic from this panel to eliminate the need for a wrench the next time this needs to be removed for cleaning, etc. 

Replaced both sensor and harness. This is the second time I've had this issue. The first time I just replaced the sensor. This time the harness was just as bad. This time I removed the metal bracket that the harness connectors rest on and wrapped the connections with electrical tape and vulcanizing tape. The new harness was much longer so I was able to put it in the corner out of the way in a service loop. I recommend doing this is you experience this moisture issue. 

After reading some reviews it was clear to me I wasn't going to mess around with rewiring the grid so I ordered it complete along with the sensor. Install was easy as the parts were identical. 

Replaced sensor and thermistor assemblies 

New water level sensor 

My Jenn Air JIM158XXRS 2 under counter ice maker stopped making ice, it made loud whirring noises and sounded like it was sucking up water. First replaced the two pumps but that only fixed half the problem. Then replaced the valve and the sensor and have a brand new ice maker. It is working fabulously and much better than buying a new expensive one. Much easier than expected to fix but just too little information available to help guide. If anyone is reading this just replace all four pieces pretty straightforward. 

I searched the web and found tech articles on my KUIS15NRXB machine. A couple of them show a table of diagnostic LED steps as well as flow diagrams showing in detail the steps and concepts of this ice making machine. The 4th step in the diagnostic showed the sensor was not properly detecting water in the reservoir so the machine never went into freezing mode. The part can be replaced with a little patience, long arms and a 1/4 inch nut driver! I put down 3 for level of difficulty, not for the installation itself, but the diagnosis. works GREAT. 

Unplugged the icemaker from the wall then plugged it back in and the power came on, went to run diagnostic and it went dead again. This happened several times, once it actually ran a cycle and started making ice, but later went dead again. I couldn't use diagnostics since it was dead, I decided to check all the pumps so I took everything out, while I was disassembling I noticed that the middle wire on the sensor plug was blue with corrosion and was loose. I stripped the wire, crammed it back into the plug and the icemaker ran fine. I then ordered a new sensor and installed it- still good after a week!! 

Read through troubleshooting,figured out what wasn't working .Once i disassembled my ice maker I found that one of the sensors wires had come out of the plug therefore I replaced the sensor first .I reassembled the unit and it still didnt make ice I then knew thecirculating pump was no longer working.I ordered and replaced the pump.The machine is in full working order 

Replaced the pump>