ZISS420DNBSS General Electric Refrigerator - Instructions

First, I had to remove the freezer drawer front. This is 8 large phillips head screws. then remove the plastic cover over the drawer slides. to do this, remove the white center screw from the slide near where it attaches to the drawer front. then the plastic cover will slide off pushing to the rear of the slide. take off the slides from the freezer walls by removing the phillips screws and pulling them towards you. They have tabs/slots in the rear. remove the center tray support and support bars, too. the icemaker has to come out, that is just 2 phillips screws but you also have to disconnect the electrical connector. just squeeze the locking wings and rock/pull. a screw in the top center of the back panel comes out. Lift and pull the back panel out. The evaporator coil appears. The thermocouple is attached to the coil in the upper right. Cut that one's wires and take it out. Just cut back about an inch from the back of the thermocouple, there is not much slack. Seperate and strip the wires back about 3/8 inch. Do the same for the new thermocouple. I twisted the wires together and used a solder sleeve to join the wires. The sleeve is just a little plastic tube that has a ring of solder in it that melts with heat gun heat. You can join the wires using butt connectors or whatever method appeals to you. I just wound the extra wire and put a cable tie around it, there is plenty of hiding space in that area. Make sure the new thermocouple is contacting the coil firmly.At this point, for a test, I left everything apart, propped the drawer against the opening and plugged the fridge in. Note that the evaporator fan will not start spinning immediately! It will just sit there making little bumps like it wants to go. The temp in the coil has to get settled before the electronics in the refridge will tell the fan to spin. It takes maybe 20 minutes. Reassemble. Fridge and freezer work great. It does take several hours for all to get cold again.

Very limited working space in this model. Must remove grill and disconnect elect connector on motor. One additiional tool suggested: Extendable rod with magnet on end because you will most likely drop something. First, remove two screws holding motor to metal strap. Tool must be inserted between blades of fan in order to get to the screws and this is the hard part. Fan and motor are removed as one assy and this takes some manuvering. Might have to remove front screw on metal strap to gain more room. I did not attempt to remove fan shroud. My fan was attached to the motor shaft with a metal clip. Spray a good lubricant such as PB Blaster on the shaft, wait a few minutes and press it or tap it out gently. Save misc parts on old motor for reassembly. Your set up may be different so check out everything before starting.

Very simple, I followed instructions sent with the filter. Twisted old filter clockwise 1/4 turn to remove. Filled new filter with water, lined up arrow on filter to arrow on refrigerator, and then turned 1/4 turn counterclockwise. Filter raised and seated itself. Wiped few drops of water from refrigerator shelf.

I just unscrewed filter and screwed in filter bypass

none required

Temp. Sensor was under an egg shaped cover on the left side wall in the refrigerator. Remove the cover, cut the two wires to the old sensor and remove it. Connect the new sensor to the two wires using butt connectors. Replace cover and done.

Removed water filter and inserted plug (works great and water flow increased)

as per video

Removed the old filter. Filled the new one with water and put it in theplace of an old one. Flushed the system with 1 gallon of water.

There were only 3parts listed to check omed out the defrost heater and thermostat ....thermistor checked bad ordered replacement took less than 2 minutes to replace after I defrosted it again runs fine

Adding a small amount of water to the filter would resolve the problem for a week or two. So, I thought this was an issue with the filter and decided to try the bypass cap to help zero in on the problem. The bypass cap had no instructions concerning the need for O ring so it was trial and error. The O ring was not needed. After installation of the bypass cap, no water flow resulted and I had to replace the filter. Intermittent problem continues.

unscrew filter and replace the new one

changed sensors did not repair problem,replaced damper with mechanical damper fixed problem.

took out shelves and removed the back plate my removing 2 screws with a nutdriver.removed the old defrost timer and defrost heater which was really easy.then installed the new ones.the video i watched on the website was really helpfull.

I have a GE Profile French door refrig. It's only about 4 yrs old and the defroster stopped working. I read the other repair stories and was able to narrow it down to either the temp sensor, defrost timer, or main board. The refrig section was up to about 47 degrees and freezer was around 25. I could tell it was trying to cool but couldn't. So I tried the temp sensor first. I cut and spliced the new sensor on the outlet of the Evap. Coil and it took about 15 mins. Turned refrig back on and waited. The coil started to ice over after about 5 hrs I left the back panel off so I could see if and when then heater kicked on. After about 8 hrs I looked in and saw a faint glow and water trickling down and running out the drain. Turned out the sensor was bad and wasn't telling the main board it needed to defrost. I would try the sensor if you are having the same issues before spending a lot of money on the main board, defrost heater and or timer.