This part is snapped onto the top portion of the evaporator. The thermostat sends temperature information to the processor. The defrost heater must be replaced when replacing the thermostat.
Works with the following brands:
Amana, Kenmore, Maytag, Whirlpool
Works with the following products:
Refrigerator
Fixes the following symptoms:
Fridge too warm, Freezer not defrosting, Freezer section too warm, Freezer too cold
Part# 12001937 replaces these:
AP4009073, 1023500, 12001937, 12001937, 67001202, 67002571
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Works with the following brands:
Amana, Kenmore, Maytag, Whirlpool
Works with the following products
Refrigerator
Fixes the following symptoms
Fridge too warm, Freezer not defrosting, Freezer section too warm, Freezer too cold
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2 questions answered by our experts.
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Louis
February 5, 2025
The defrost thermostat is part 12001937. What are the open and close temperatures to test it ? Like = L45-15F ?
For model number ARB2217CSL
Hello Louis, thank you for your question. This thermostat opens at 42°F and closes at 30°F. We hope this helps.
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Louis
February 5, 2025
I want to check my freezer foing hot and cold all the time. I see there is a defrost thermostat number 12001937. I want to know the operation temperature to test it ? Do you know the open and close temperature ?
For model number ARB2217CSL
Hi Louis,
Thank you for your question. If you are testing the defrost thermostat for continuity with a multimeter on the Rx1 setting when it is cold, it should produce a reading of zero. If it is warm, between 40 to 90 degrees F, then you should receive a reading of infinity. If you do not get these results, then you will need to replace the defrost thermostat. We hope this helps!
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The defrost heater is similar to the burners on an electric stove. It's located just beneath the cooling coils, which are concealed behind a panel in the freezer compartment. The heater gets hot. And, because it's close ...
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Installation Instructions Provided by Fix customers like you.
Average Repair Rating: 3.9 / 5.0, 3 reviews.
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Sorry, we couldn't find any existing installation instruction that matched.
Fridge and freezer were not cooling. Discovered It would work if Temperature was set at MAX setting
I was very hesitant to tackle it because I know nothing about appliances but I watched the video on Installing the Defrost Thermostat and it looked very simple. I unplugged the fridge. I removed the shelves and back panel of the freezer, and found the defrost thermostat. I clipped the wires and removed it from the line, (it just snaps o
... Read moren and off). I connected the new one to the same colored wires and snapped it on the line and put everything back together. VERY SIMPLE! Who knows what a repair guy would have cost, probably a minimum of $200. I fixed it for under $40.
The only thing that prevented me from just buying a new fridge was the wait time to get one that would fit in the preexisting space. That led me to search for a possible DIY fix since I didn't have anything to lose. Anyways, the coils in the freezer were frosted over - another symptom of the defrost thermostat. Part came within a coup
... Read morele days. Took the back panel off, (lift up on freezer drawer - comes right out) and then defrosted everything with the hair dryer which took the longest amount of time. Cut wires for defrost thermostat, connected with marine grade butt connectors (have heat shrink ends), covered with electrical tape, put everything back together. Been running perfectly for two weeks with no issues. $1,370.00 saved = awesome.
It would frost over in a week or two. Uplugged the unit. Took off the back plate in the freezer compartment. Used a small room fan to melt the frost. That took less than five minutes. Cut the two wires on the old thermosatat, which came apart in my hands as I removed it. Used crimpers on the wire crimps to splice in the new thermosat
... Read more. Clipped it on the copper pipe. Replaced the back plate. Plugged it in, turned it on. It's been a month now, and no frost visible on the coils, so I guess it's working. My wife thinks I am a genius. Thanks!!!
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Model Compatibility
This part works with the following models:
Fix Number: FIX2003451
Manufacturer Part Number: 12001937
Item is in stock and will ship today if your order is placed before 4:00 PM Eastern Standard Time.
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Some of the parts we sell are eligible for mail-in rebates since we can recycle them. We will display any applicable rebates in your shopping cart. To redeem your rebate, contact Customer Service after you have received your part.
