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

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)

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Christopher for Model Number ED2KHAXVQ01

My condenser fan only runs when the compressor is running. This is causing the fridge section to be too warm. The capacitor, compressor starter, and defrost thermostat have all been replaced and are testing as working with a multimeter. I have made a visual inspection of the Adaptive Defrost Control Board and Thermostat, and do not see any issues visually. The Thermostat is turning on the compressor properly, but it turns off before the fridge section drops to 40 degrees. Is the Adaptive Defrost Control Board the most likely culprit at this point, or is there another board that can turn on the condenser fan even when the compressor is off?

Answer

Christopher, the condenser fan and evaporator fan are only going to operate when the compressor is operating in this model. The issue is going to be either with the thermostat WP2315562 or the adaptive defrost control 4388932. With the compressor not running and the temperature not cold enough, the thermostat can be tested for incoming and outgoing voltage. The thermostat should receive 120VAC from the defrost control, and when the temperature is not within 4 degrees of the set temp, 120VAC should leave the thermostat to go to the compressor and fans. If the thermostat is receiving voltage, but not sending it out, then the thermostat has failed. If the thermostat is not receiving voltage, then the adaptive defrost control has failed.

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Answered by AppliancePartsPros.com   |   Wednesday, August 7, 2019

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