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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

Hello Lorenzo. Turn the defrost timer and see if the unit starts to run. If so, the timer 4388932 is bad and will need to be replaced. If not, you need to check and see if the temperature control is bad on the unit and needs to be replaced.

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1 Answer

Hello Dean. The best way to test if you are having a defrost issue is to test the heater and the defrost thermostat and see if they are good. If so, replace the timer 4388932. You can test for power coming to the timer, but without a model number we cant check the wiring diagram for this. You can test this with a multi-meter TJMA-DMT3. Here is a link on how to use a multi-meter. http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html

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1 Answer

Don, The easiest way to diagnose a defrost issue, is to check the back wall of the freezer. If there is a heavy build up of frost or ice on the wall, you"ll need to circuit check the heater, thermosta and the defrost timer. Also check both the doors for a good and proper seal all the way around. If all's OK, check the evaporator fan , it may be stuck or running slow and not circulating the air properly. Good Luck

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1 Answer

Hello Abel. The timer 4388932 is located in the controls in the fresh food section. You will need to remove the control from the top of the unit to access and replace the board.

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1 Answer

Hello Howard. Check and see if the unit is stuck in the defrost cycle. If so, you will need to replace the control board 4388932. If the control is good, the temperature control WP2198202 in the unit will need to be replaced. Hope this helps.

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1 Answer

Hello Mike. Check and see if the compressor is running at times, and the fan motor 4389144 is not running. If so, it will cause the problem you are having. Also, make sure the timer 4388932 is not sticking in defrost. Hope this helps.

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1 Answer

Dale, You're on the right track, Based on your post, the temperature control WP2198202 is the most likely issue. Good Luck and Thanks

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1 Answer

Hi Gary. The defrost control board is part # 4388932, located on the rt. side in the control area. There are 4- screws holding the control compartment to the upper cabinet. There are 2 rear 1/4" screws in the back outer rim. There are 2- more in the front half. You may need to use a plastic putty knife to gently remove the front label /cover part # W10124121. The control box assy. is part # 2181737. This will access the screws.

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