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Customer Questions and Answers for Heater-Defrost by Frigidaire

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    • Part Number: AP3874399
    • MFG Part Number: 240356217
    • Made by: Frigidaire
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For Frigidaire Heater-Defrost (Part Number: AP3874399)

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Hope you can help so I can order some parts: We are getting Ice build up on the right side of our freezer (big ball of it) then the fridge will quit staying cold. So I will unplug the fridge and defrost the freezer with a hair dryer (taking the back panel off) plug it back in and it cools right back down for a few weeks then freezes up again and the fridge goes warm. Now we have both the freezer and fridge turned all the way up and the freezer is about ten degrees and the fridge is at forty degrees is that normal? What part do you think I need. I have really no tools to check if they are working so I thought just buy and replace and hope that works.

Robert for Model Number FRT21IL4FWO

ANSWER Hello Robert. You need to get a multi-meter. It sounds like you may have a defrost problem with the unit. Check and see if there is any frost build up on the back wall of the freezer. If so, you will need to test the defrost heater and the defrost thermostat. They should read closed for continuity when cold. You can test this with a multi-meter TJMA-DMT3. I will include a link at the end to assist you how to use the multi-meter if needed. If both parts are good, you will need to replace the defrost timer. Once the problem is repaired, you will need to thaw out the ice on the coils before the unit will operate properly. http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html 

Answered by AppliancePartsPros.com   |   Friday, July 20, 2012

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