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Defrost Thermostat

Part Number: AP4055031
MFG Part Number: 52085-29
Made by: Whirlpool
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$52.72 $23.85

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Questions & Answers

7 Questions & Answers

Genuine Whirlpool part. Whirlpool brands include Whirlpool, Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and others. See all items in Refrigerator Defrost Thermostat, Sensor.
Whirlpool also makes various appliance models for Sears / Kenmore.

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Repair Help

Cross Reference Information

Part Number 52085-29 (AP4055031) replaces 1072, 52085-1, 52085-13, 52085-2, AH2047350, EA2047350, GL8513, PS2047350.

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Repair Video

How to Replace Defrost Thermostat #52085-29

Step by step instructions on how to replace a Defrost Thermostat #52085-29 for Refrigerator made by Maytag, Magic Chef, Admiral, Jenn-Air, Crosley, Hoover. Note: This video is intended to give you the general idea of the part replacement procedure. Your appliance may differ depending on the manufacturer and model.


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Most Interesting

This is magic Chef 10 Cibic foot top freezer refrigerator. The freezer is fine, but the midle and lower half of the refrigerator freezes food...and the thermost dial does click when turned off, but does not turn off an there is no regulatin of the temperature. I just ordered part number AP4055031 and want to assure this is the right part for possible fix..If the right part, but still does not fix...then what else could the cause be?

Paulette F for Model Number MCBR1010W


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My side-by-side Maytag was suffering typical symptoms of defrost cycle failure: refrigerator stopped cooling and then ultimately the freezer stopped freezing. I pulled the panel off the back, coils were frozen solid. I verified that the timer was advancing on its own. I pulled the thermostat and ohmed it in a glass of ice water. No continuity. So I purchased a new thermostat locally, because I wanted to get it fixed right away. I decided to ohm the new thermostat before attempting to install it and was dismayed to discover that it also shows no continuity no matter what temperature it's at. I can test it at room temp, float it in ice water, or freeze it solid in a cup of water. The ohm meter never budges, flickers, or otherwise shows any indication that it detects anything. It's a new digital ohm meter and it does detect continuity in other things (for example the metal serrated edge of an aluminum foil box). It's set to 200. Is there something I'm not understanding about what an ohm meter should show with a functioning defrost thermostat?? Is it really that likely that a brand new thermostat would be bad from the get go? I admit I'm not that savvy about electrical stuff, however I am usually quite mechanical/techie in other ways, so if anyone can at least verify I'm on the right track with troubleshooting this problem, I would really appreciate it. Thanks much!

Vindobonau for Model Number RSD2000


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We recently had a power surge which impacted our Norge fridge. It was getting cold only at the bottom of both compartments. I replaced the evaporator fan motor and both compartments are now good and cool, but the unit keeps running and not shutting off. Could the thermostat in the freezer also be bad, or maybe the defrost timer?

Matt Manz for Model Number CNNS208KA


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Latest Questions

HI. I was wondering about how long it would take to recieve and also how much shipping cost would be if I ordered your radiant heater for my RSD2000D REFRIG. Thank you.

Chuck for Model Number radiant , heater


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What is typical root cause of defrost heaters burning out? I replaced heaters 2 years ago and it looks like they are out again. Can these " big resistors " be burned out if too much voltage is applied to them? How much voltage should I read when the defrost cycle is "on" ?

Mark for Model Number RST-2200 Maytag side by side refigerator


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Fridge &Freezer not cooling. Defrost heater 24ohms,defrost therm.0-ohms unless in high scale. Would like to know if therm. is within specs?

Rodney for Model Number MAYTAG RSW22A side by side


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