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Customer Questions and Answers for Heater, Evaporator by Whirlpool

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    • Part Number: AP4078863
    • MFG Part Number: 67002493
    • Made by: Whirlpool
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For Whirlpool Heater, Evaporator (Part Number: AP4078863)

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Bottom mount freezer freezing but the frig is not cooling as frost builds on the evaporator. Manually defrosting allows proper cooling in the frig for about 2 weeks. I tested the evaporator heater and the reading is 27-28. From my research I believe the problem is the defrost system, but I don't know how to test the thermostat and if this unit has a electonic defrost timer or mechanical. I believe these are the three components to check. Still researching. Thank you

Scott for Model Number ABL2522FES

ANSWER Hello Scott. You will need to remove the back wall of the freezer and test the heater 67002493 and the thermostat 67003426. They should read closed for continuity when cold. If they are good, you will need to replace the control board W10503278. You can test this with a multi-meter TJMA-DM1. Here is a link on how to use a multi-meter. Hope this helps. http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html 

Answered by AppliancePartsPros.com   |   Thursday, May 19, 2011

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