KUIA18NNJS8 KitchenAid Ice Maker - Instructions

I determined the pump was not working by running the ice maker. After it started a cycle, I could fell the underside of the cold plate to insure it was indeed cold, but no water was flowing.
First, be sure the water pump electrical plug is in., it releases by pressing together the tabs at the ends, not sides.
To replace the pump, turn off the water supply and cover the drain hole at the bottom of the ice bin so you don’t drop parts down it. The screw-plug at the bottom of the water tank or a quarter will do.
Remove the water tank below the pump by taking out the thumbscrews at both ends. You can then see the hose at the bottom of the pump. If it is off, that may be the problem.
To remove the pump, pull the fill hose to the left out of the slot and bend it behind the pump to get it out of the way. Unplug the electrical connector and the pump hose. There are three ¼” hex head screws, teo on the side wall, one in back. The middle one is the hardest to access. I used both a nut driver and a socket wrench with a 4” extension.
When installing the new pump, be sure to plug in the electrical connector, the discharge hose at the bottom and position the fill tube as you found it. Forget any of these and nothing works. Re-install the water tank, replace the drain plug and turn on the water supply, in that order.

didn't go well at first. Got it all hooked up relatively easily but it didn't work. Called customer service who suggested hooking pump up to other power source to be sure it worked. It still didn't work. After closer inspection a connection wasn't hooked up on pump. After connecting got it back in about 30 min. Working like a charm now.

Bought new wire, strung it end to end and fastened it at each end.

Instructions were really clear and easy to follow. Hardest part of the job was moving the refrigerator away from wall after it was filled with holiday groceries.

The thumbscrews that hold the cutter grid can only be removed by using a needle nose pliers , you cannot turn them by hand. The electrical connections for the grid and level sensor can be removed by pressing the front side of the connector while pulling down. Re-installing the cutter grid is in reverse to the removal, just follow the instructions. But be aware that all wiring remains outside the grid perimeter when reconnecting. One other thing: While you are at it, remove the lower outside panel to expose the evaporator coils which need to be vacuumed. Replacing these parts is tricky. I had to remove the door then loosely install the upper retainer bracket for the lower panel so I could slide the upper edge into that bracket before installing the lower screws. I used an ice pick to line up the holes while using a blade screwdriver to push the panel in its place to install the retaining screws. It took me about a half hour after I figured out what to do.

Follow the instructions already submitted by others. As mentioned be sure to place towel inside to cover the drain. My 3-wire electrical connector also had some corrosion build-up so I had to remove the bracket holding the connecter cut the 3-wires and install a new connector. Not a big deal, you are just working in a small enclosed area. Pulling the entire unit out and either elevating or tilting back helps with the access. Be sure to check drain connection in the back of the unit when putting back in place. Having a headband light helps for entire repair.

We guessed what the problem was and we were extremely fortunate that we guessed correctly. The part was not technically difficult to install just a little awkward to get to. My husband had no trouble although he did take the machine out of it's space and lay it flat on the floor. One benefit of this process was being able to clean some of the areas that are almost impossible to get to when the motor is in place. It was well worth the extra shipping charge to get it before the weekend.

I replaced the thermometer first and it started working again. I was convinced that the reason that it continued to break every 6mos was because no one had ever replaced the fan. The difficult part was getting to it. After trying to get in from the front and from the back I finally figured out that I had to take the bottom off and tilt it on its side. I was then able to get out the pin in the condenser and move it to the side. I could then reach the screws that held in the fan. I then decided to put the fan on the motor and when I was tapping it on with a hammer the back cracked. I attempted to fix it by taking apart the old motor and salvaging the parts but that didn't work. I had to buy another $85 part and take the whole thing apart again. It was easier the second time because I knew which screws and pins I had to remove and how to get to them. I very, very carefully tapped the fan onto the motor and now it is working fine. I will let you know if it is still working at Easter. If it is I will have done a better job than the 7or 8 repairmen who have fixed it in the past