ZIS420NRK General Electric Refrigerator - Instructions

Remove back panel on bottom of fridge to access compressor area. Remove screws from water solenoid and water valve and push to the side so the side of the compressor can be accessed. Then locate the inverter box. You will find a Phillips head screw on the bottom of the inverter. This is the only screw that hold the inverter in place. Remove the screw and tilt the inverter box forward away from the compressor, then lift the box out of the the holder. You may have to wiggle it a bit to get it out. Remove the plug that attaches to the compressor and then with the power on check your voltage coming to the compressor. It should read 120 volt. If it doesn’t your inverter is bad. Remove the other plug on the inverter box and pull the box out.
Reinstall the unit in reverse order. Use the appropriate jumper to plug into the wire connection going to box and then plug it into the connection off the fridge.
Once everything is reinstalled and before you put the back panel on plug your refrigerator back in and you should be able to hear the compressor working or feel the top of it to make sure. If it’s working you are good and can reinstall the back panel.
It will take 4-5 hours to come back to temp if it’s been off for any length of time.

turned off water supply, took screws out of bracket, then unhooked water lines. Installed water lines onto new valve, plugged it in then screwed bracket back onto fridge, turned on water and was back operating

Remove rear plate. Remove fan bracket. Replace fan gaskets, blade and motor. Replace bracket. Replace rear plate. Very simple. Fixed the problem.

I found that I did not have the strength to stretch the new spring enough to install it initially. Using a 1/8 or 5/32 inch allen wrench I removed the pivot for the arm that the spring applies tension to. This allowed the spring to be easily attached to the hole in the arm and to the post in the bottom of the refridgerator. I then used a small pliers to grab the arm in front of its pivot hole and pull it against the spring into position to replace the pivot. Replacing the filter was surprisingly easy. I turned the water supply valve off under the sink and easily unscrewed the old filter (about a quarter turn). I filled the new filter with water and srewed in in. No wrenches required. I turned the water back on under the sink and everything works great!

Repair was very simple. Removed refridgerator bottom back panel, about 6 or 7 screws. disconnected bad valve, installed new valve , connected water supply line and then reinstalled panel. Took about 15 minutes from start to finish.

I tried to quite the noisey evap motor with special liquid motor grease from Radio Shack. It did not work, so I ordered the evap motor. My freezer motor was wired slightly different than the motor I received. The replacement motor had a male plug attached to the four wires, the original motor was different, so I cut the wires and spliced them into the original freezer wires (colors were the same). Remounted motor. Works great, and no more groaning motor
Peter

I used pliers to pull lightly on the head of the switch, while I inserted a small flat head screw driver into the base of switch and gently worked around the edges to free it from the panel.

I visually inspected the compressor and narrowed down the source of the noise to the freezer area. Then I removed the doors and the screws securing the divider panel. Next I removed the bottom panel of the freezer, the styrofoam insullation panel and the evaporator motor. The motor is mounted between two grommets. I replaced the grommet facing the fan blades. The aluminum reflector below the styrofoam insulation panel had also come loose. I reattached it and reassembled the refrigerator in reverse order. The noise is gone!

The replacement single outlet water valve was not an exact replacement and required a slightly different mounting position. The original plastic hose to the ice maker attached to the valve with a plastic nut. The new connection requires only pushing the hose into a hole in the valve. Easy and simple. However, the new mounting angle promptly broke the brittle old plastic hose. I was able to pick the broken pieces of hose out of the valve with a fine point pick saving the new valve. If I hadn't been able to pick the broken pieces out of the new valve I would have had to order another one. Off to the big box store to buy new 1/4 inch plastic hose and a coupler. Repair completed and no leaks. If the hose hadn't broken, the I would have been done in 15 minutes. I suggest you plan to replace the entire plastic hose when you replace the valve.

Replace the motor fan on condenser and clean the condenser

The original piece was already removed. installation required a little custom fitting as the mounting was slightly different and the copper tubing from the water line needed to be bent to fit. The push in plastic connection (output to the icemaker itself ) was simple ( I was a little leary of it not leaking.)
I plugged in the solenoid connection first
I attached both water lines and checked for fit. Made the adjustments and then screwed the bracket back on to the refrigerator. I could only install one screw but it holds it fine. I did have to trim the hard press board(cardboard) a little to fit the new valve. I believe the board is to protect against dust build up on the mechanical equipment (motor, condenser,etc)

It could not have been easier. The new part matched the old part exactly. I turned the water off going to the refrigerator, unscrewed one screw from the old part, pulled the electric plug loose, disconnect the copper water line from old part, cut off the black plastic tube next to the water valve going to the icemaker, and the new water valve was ready to install. It's that simple. I then took the new water valve, connected the copper water line to it, pushed the black plastic water line into its hole, connected the electric plug, and screwed the new part onto the refrigerater. In a matter of minutes I had water running to my icemaker again. I can't imagine the money I saved by doing this simple project myself. This took less than 10 minutes.

removed freezer door / shelf /ice maker pulled back panel off and removed fan

-Pulled refrigerator out to access back.
-Removed compressed paperboard cover.
-Found compressor running by the feel.
-Removed metal cover to control board.
-Found ~5V coming from control board to inverter (variable frequency drive) board assembly attached to compressor.
-Found ~120 going to inverter board.
-Removed inverter board assembly from compressor.
-Found equal resistance (~7 ohms for mine) at all three contacts of inverter (DC) compressor.
-Ordered inverter assembly, plus one extra and control board for possible future use so not to loose all my food again; I might order a compressor so I have it before price goes up.
-Installed inverter when arrived.
-Used air compressor to blow out accumulated dust on condenser coil.
-Closed up and cleaned up (C^2).
-Fridge cooled and back to proper temperature the next day.

Super simple. Extremely fast delivery of part. Simply disconnect the 2 fast-on connectors to valve, disconnect intake and out lines. connect intake and out tubes to new unit, mount via screws to fridge, reconnect the 2 fast-on power connectors and your back in business. Could not be an easier repair.