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Customer Questions and Answers for Refrigerator Main Control Board by Ge

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Manufacturer Part
4.89 (64)
By: Ge
Part Number: OEM21564309
Manufacturer Part Number: WR55X10942C

Fix a refrigerator that won't cool or has temperature control issues with this main control board. Moderately difficult repair, taking 15-45 minutes.

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Questions & Answers

For Ge Refrigerator Main Control Board (Part Number: OEM21564309)

1 Answer

Roberto, This issue would be caused by a faulty main control board. The control board will operate the compressor and the display board and if both are not working then the main control WR55X10942C will need to be replaced.

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1 Answer

Daniel, The first check should be at the defrost bi metal (thermostat) WR50X10047 If it is "sticky" or has become dislodged from the evaporator, due to excess ice, etc. the heater will remain on longer than designed and cause excessive heat and melting in the freezer compartment. If the thermostat looks and checks OK, then replace the control board.

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1 Answer

Ryan, You will want to test the thermistor that is located on the evaporator coil. This thermistor controls the defrost. The resistance value of the thermistor WR55X10025 should be 42.2k ohms at 0 degrees. With replacing the defrost heater and control board this is the most likely cause.

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1 Answer

Hello Ramon. You need to check and see if the condenser fan motor is running good. If not, it could be the issue with the unit. If it is good, look for a defrost issue or partial frost on the coils.

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Tonya for Model Number pds20mbrbb

Temp controls don't work. Try to set fridge &/or freezer temp to recommended levels (or any levels) but the display just reverts back to 70 for fridge & 40 or so for freezer. Have heard online suggestions that mainboard may have circuits damaged or that the board is bad, was recalled & may be replaced under warranty. Not sure if it's still under warranty. Guess I can find out. But if replacing the mainboard (which I heard is really easy) then why not do that? Any ideas would be appreciated.

1 Answer

Hello Debbie. Yes, based on the information you provided, it sounds like the mother board is bad and will need to be replaced in the unit.

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Leon for Model Number GE Mod#PSC23NSTDSS

I have a GE Arctica Mod#PSC23NSTD that just went completely dead a few days ago with absolutely no function except some very faint blinking on the temp display. This unit has had some temp control problems over the past couple of years. Back then I had talked to a local appliance dealer/parts supplier (I fix some appliances localy among other things) who said it was probably the mobo because they were known to have problems with faulty caps on the mobo itself. The temp control problems went away when I started running the "custom cool" option a few months ago. Now the fridge is completely dead and I am pretty sure it's the mobo. So if I replace the mobo - what are some of the other things that can cause it's failure other than defective caps? Evaporator fan motor? Condenser fan motor? Fresh food motor? Appreciate your input - thanks.

1 Answer

Hello Leon. It just sounds like the main board has failed and will need to be replaced. It does not sound like an issue with the other parts.

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