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Customer Questions and Answers for Defrost Thermostat by Frigidaire

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    • Part Number: AP2150024
    • MFG Part Number: 5303917954
    • Made by: Frigidaire
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For Frigidaire Defrost Thermostat (Part Number: AP2150024)

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Hello. Frost buildup in freezer, fridge stays warm. I've replaced the defrost timer and still have the problem. Before I order the defrost thermostat, I want to check with my digital ohm-meter. Do I need to remove the thermostat to do this test? Can I just touch the 2 thermostat wires with my leads and get a reading without removing it? Also, if it is an "open" reading (meaning a faulty part?), does that mean I am getting numbers greater than 0 on my ohmmeter? Thank you.

Bob for Model Number frt22tseb2

ANSWER Hi Bob. The defrost thermostat in frozen temperatures always ohms out closed (0-Ohms). Usually 15° or so. Then it also needs to open as temperatures raise so it shuts the heater off and not melt the cabinet. The element needs to measure resistance and not open (infinity). These are best to change together since they are electrically in the same circuit and they work 24/7 along with the same age. It is a bit of time it takes to defrost the coils (manually) and install all parts. The heater and defrost thermostat can be measured with one wire disconnected as long as there is no power going to it. Heater part # 5317842502. Thermostat part # 5303917954. Thank You. 

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

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