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Customer Questions and Answers for Refrigerator Adaptive Defrost Control Board by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM9328191
Manufacturer Part Number: 4388932

Fix frost buildup and warm fridge issues with this adaptive defrost control board. Solves freezer icing and defrost cycle failures. Moderate DIY repair.

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Questions & Answers

For Whirlpool Refrigerator Adaptive Defrost Control Board (Part Number: OEM9328191)

1 Answer

Patricia, The control board that is needed for the defrost is part number WPW10503278 and is the control board in the refrigerator compartment that you adjust the temperatures on. To remove the control panel you will need to first remove the light cover. Once the light cover is removed look at the back part of the controls and there will be 2 slots. Using a flat blade screwdriver push in on the tabs that hold the panel in place. This will allow the control to drop down and allow you to change the control board.

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1 Answer

Glenn, The board blowing out just as soon as power is supplied will be caused by a dead short and you will need to check the wiring, check the heater, compressor and fans to make sure that the short is not coming from them.

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1 Answer

Hello Dallas. Based on the information you provided, you will need to check the condenser fan motor and make sure the coils are clean.

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Hello Dean. To access the defrost board, you will need to drop the control panel in the fresh food section down. The board is inside there.

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1 Answer

Hello David, The diagnosis in this case would be determined by the specific customer complaint. The issue is most likely the adaptive defrost control 4388932. If it were the cold control, the unit normally would not begin cooling again until the cold control was adjusted or "bumped".

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1 Answer

Mrad67, There is not a continuity test that can be done on the defrost board. Only voltage checks in and out of the board. Based on the information that was provided about the failure, the issue does appear that the Adaptive defrost control board has failed.

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Fidleid for Model Number 106.51262101

This unit was subjected to, I think, a power surge. While the thermostat cycles the fans, the compressor does not start. I checked the compressor for shorts and it seems ok. Is there a likely part to bank on? I was thinking it could be the control board but I believe the n/c position on the relay is the run mode and the tracks etc look ok on the board. So it points to the motor relay package. I there an easy way to apply 110 vac to the compressor leads to see if it will run? Or is there an easy way to confirm that the motor relay/overload are ok?

1 Answer

Fidleid, This issue would most likely be caused by a faulty relay on the compressor rather than a control board or thermostat issue.

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1 Answer

Hello Mark. Based on the information you provided it sounds like the defrost board is bad and will need to be replaced on the unit.

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Tonys for Model Number ED25RQXYW02

Our refrigerator does not work. However, when refrigerator is plugged in, all the lights work but fan and refrigerator does not run. What could be the problem? I am thinking it could be something wrong with adaptive electric board timer or cold control. How should I test the adaptive electric board with DMM using continuity? There are six pins on electric board. Which one should I connect to each other to confirm either its working or not? Thanks

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