GST20IBMAWW General Electric Refrigerator - Instructions

First I defrosted the evaporator core with a hair drier, making sure to disconnect the power before hand. I pretty much followed the directions included with the part, which by the way were excellent, and very detailed. The alternatives were call a repair man for around $300.00 plus parts or take less than a $40.00 gamble. Or even replace the refrigerator at $1400.00. It was the diagnostic portion of your website that convinced me that I had found the problem and that I could repair it myself with a minimum of effort. Needless to say I will come to this site in the future before calling a repair person. The refrigerator is working just fine now. I had my parts in three days, thank you for your attention to detail and a all around positive repair experience. George Day

Everything looked to be working but the compressor. As a pro checked every thing came down to a relay on the main board.

Just removed cover from back top left. marked and removed all wires. removed old board and installed new board very easy. Must read paper sent with it,
you may need to cut wires on some models.

First I disconnected the Power from the unit. Pulled out the freezer drawers and the ice machine used a 1/4 inch nut driver and removed the sheet metal from the back of the freezer exposing the evaporator coils. I defrosted the coils. Then I removed the two screws holding the defrost heater braket assembly and removed the two electrical connections from it. I then installed the new heater put everything back together(reverse of installation)and it works like a brand new fridge and freezer.

Replace the motor fan on condenser and clean the condenser

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

I followed the partselect videos for the temp sensor and defrost thermostat and the refrigerator has been working well for a about a week now. The refrigerator is old enough that I was just going to replace it. When I called the repair company I use, they said it would cost $200 to $300 for the repair, but I didn't want to put that money into an old refrigerator. I did a little research, found this site and figured it would be worth buying about $20 in parts and giving it a try. I have absolutely no experience working on refrigerators, but the videos were so easy to follow, everything went smoothly. The old thermostat was definitely broken when I checked it with a meter, so I'm pretty confident that the problem is fixed.

i had to improvise And relocate ground wire to get a proper ground .. That's all , the video was a GREAT HELP...

For troubleshooting, I took off rear panel inside of the freezer compartment & determined that icing of the coils was not the problem & it did not apprear to be a defroster malfunction. All components appeared to be working properly except the compressor would not turn on and only room temperature air was being circulated by the fan. After narrowing the probable causes down to a faulty Main control board by reading as many similar posts as possible,I ordered the new control board. When it arrived the following morning via UPS(less than 24 hours!), I unplugged the wiring connections attached to the old board, (which was somewhat different in appearance), and then gently popped the circuit board off of the plastic retainer studs by pushing in the little retaining clip part of the studs in with a small screwdriver so the board could be released easier as I pulled outward. I popped the new board on the studs by gently & evenly pushing with a larger hut driver over the studs until it was locked in, being careful not to damage or over stress/bend the board. I placed the wiring connecters onto the pins on the board.....every connecter had a different amount of pins so improper connection was not possible. I placed the ground wire connection of the new board between the metal cover plate @ an adjacent screw location to ensure grounding to the back of the fridge sheet metal. I plugged in the refrigerator and was quite relieved when I heard the compressor start up after a second or two! Within moments the temp began to fall until it reached the proper temp in both compartments. Success!

After replacing the light bulb and still no light I manually pushed the light switch button. Intermittently the light would come on then go out. I removed the power plug from the power source then replaced the light switch. I plugged the refrigerator back in and now I open the door the light comes on and stays on until the door is closed.

Removed the back cover over the control board, and made sure that the board was the same. It didn't look exactly the same, but figured that it was the same, just updated. Took out the board, moved the wires to the new board and reinstalled. Plugged it in and it came on, so I reinstalled the cover. Seems to be working to this day.

The old switch was hard to remove. Thinking that I may have to loosen the wires I used a socket wrench to remove a clamp. This was unnecessary. In the end the switch did come out using a large size screwdriver. The problem was that the expanding plastic tongue is not visible from the ouside so you have to try to feel your way around. If i had ordered the replacement before and not afterwards I would have seen this before hand.

The control board and access panel are on the back of the refrigerator, so you will need to roll/slide the refrigerator away from the wall to gain access to the panel. Be careful not kink the water line if you have an ice maker connection.
Unplug the power cord from power outlet on the wall.
On this model the control board is located behind a rectangular panel that is about 8" x 10". The panel is about 3 feet above the floor on the left side (as viewed looking at the back of the refrigerator).
Using a Phillips (cross point) screwdriver, remove the screws and the access panel cover. Look closely at the control circuit board and you will see 4 small white plastic protrusions sticking through the board -- these are the plastic posts that hold the board in place. There is a small tab that locks the board to the plastic mounting post. Use your needle nose pliers (or other small pliers) to compress the small tab on the post; and while squeezing, pull on the control board until it releases from the post/clip. Repeat this for each of the four posts and the board will now be free from the mounts.
Look at the plugs that connect the wires to the board and note the orientation of each plug. Each plug is a different size, so they will only fit into the socket of the correct size. On my refrigerator, there is one plug that is not connected to the board and is hanging loose, so don't get confused when connecting plugs to the new board - this one remains unconnected.
Firmly pull each plug from its socket on the board -- try not to pull by the wires. If you have a stubborn plug, grab it with your pliers and pull it out. There is a green ground wire connected by a screw into the refrigerator cabinet. Remove this screw and ground wire. (Note: on some models the green ground wire is fastened with a screw that holds the cover in place - just be sure to reconnect the wire when replacing the cover).
Insert all of the plugs into the new board -- be sure they are seated firmly. Reinstall the ground wire. Place the board over the plastic posts and push until the tab locks the board in place. Replace the cover.
On the sheet that comes with the refrigerator they instruct you to remove the lower panel on the refrigerator that covers the compressor motor compartment. They instruct you to look at the power cord connection to the compressor and to locate a green wire from a capacitor. If your power cord does not have a capacitor exactly like the one pictured, there is no need to proceed on this step. Replace the lower panel. If it does have a capacitor as illustrated, follow those instructions and then replace the panel.

Now plug in the power cord to the wall power outlet. Before pushing the refrigerator back into place you want to make sure it is operating properly. To make sure that there is no "Glitch" during start up, I suggest that you set the temperature control inside of the refrigerator to "OFF" and wait about 3 minutes. After 3 minutes, set the control to the desired temperature (about 37 Deg for Refrigerator and 0 Deg for the Freezer).
If the refrigerator is running, you are finished. Being careful not to kink the water line, push the refrigerator back into place.

removed 2 - 1/4" screws and 2 phillip screws to take off the evap cover, then 2 phillip srews to take out the defrost heater assembly, replaced and put everything back together. no problem.
I GOT THE PART SO FAST THAT I WAS SURPRISED TO SEE IT THERE!

Pulled out the fridge and unplugged electric cord. Took off the back lower right side panel. Unplugged all the connectors and removed the motherboard. Replaced the motherboard and reconnected connectors. Replaced the panel and plugged it in. Works great!

pulled the board away from the 4 plastic pins, unplugged the wires and plugged them directly into the new noard, pushed board back onto the four plastic pins.......job completed in under 5 minutes. Fridge working fine now for over a week......no problems.