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2003451-1-M-Whirlpool-12001937-Defrost Thermostat Kit
Part Location Diagram of 12001937 Whirlpool Defrost Thermostat Kit
See part NI in the diagram
Replacing your Amana Refrigerator Defrost Thermostat Kit
2003451-1-S-Whirlpool-12001937-Defrost Thermostat Kit 360 view
( Grid squares measure 1x1 inch )
2003451-1-S-Whirlpool-12001937-Defrost Thermostat Kit 2003451-2-S-Whirlpool-12001937-Defrost Thermostat Kit 2003451-1-S-Whirlpool-12001937-Defrost Thermostat Kit 360 view
Part Location Diagram of 12001937 Whirlpool Defrost Thermostat Kit Replacing your Amana Refrigerator Defrost Thermostat Kit

Defrost Thermostat Kit 12001937

Works With Model AFC2033DRB!

Rated by 3 customers 

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Really Easy 

30 - 60 mins 

Ratings submitted by customers like you who bought this part.

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$72.37
In Stock
Fix Number:
FIX2003451
Manufacturer #:
12001937
Manufactured by:
Whirlpool
Works With Model AFC2033DRB!

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Product Description

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 , 8170904 Show less
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 Number Cross Reference
Part# 12001937 replaces these:
AP4009073, 1023500, 12001937, 12001937, 67001202, 67002571, 8170904

Videos For installing this part.

Replacing your Defrost Thermostat Kit

Replacing your Defrost Thermostat Kit

Questions and Answers

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2 questions answered by our experts.
  • 1
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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
Fix.com logo
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
Fix.com logo
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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Installation Instructions Provided by Fix customers like you.

Average Repair Rating: 3.9 / 5.0, 3 reviews.
  • 1
Sort by:
Search filter:
Clear Filter
Your search term must have 3 or more characters.
Keep searches simple. Use keywords, e.g. "leaking", "pump", "broken" or "fit".
Sorry, we couldn't find any existing installation instruction that matched.
Customer:
Craig from Lees Summit, MO
Parts Used:
12001937
Difficulty Level:
Really Easy
Total Repair Time:
15 - 30 mins
Tools:
Nutdriver, Pliers
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 n 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.
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5 of 5 people found this instruction helpful.
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Customer:
jeremy from jenison, MI
Parts Used:
12001937
Difficulty Level:
Really Easy
Total Repair Time:
1- 2 hours
Tools:
Nutdriver
Refrigerator warm, freezer cold
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 le 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.
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2 of 2 people found this instruction helpful.
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Customer:
G. Wayne from San Francisco, CA
Parts Used:
12001937
Difficulty Level:
Really Easy
Total Repair Time:
Less than 15 mins
Tools:
Nutdriver
Defrost cycle stopped working
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 . 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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2 of 2 people found this instruction helpful.
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Model Compatibility

This part works with the following models:
Fix Number: FIX2003451
Manufacturer Part Number: 12001937
Brand Model Number Description
Kenmore 59662212200 Refrigerator
Kenmore 59662213200 Refrigerator
Kenmore 59662214200 Refrigerator
Kenmore 59662219200 Refrigerator
Amana 59662222200 Refrigerator
Kenmore 59662224200 Refrigerator
Amana 59662232200 Refrigerator
Kenmore 59662234200 Refrigerator
Kenmore 59662239200 Refrigerator
Kenmore 59662822200 Refrigerator
Kenmore 59662824200 Refrigerator
Kenmore 59662832200 Refrigerator
Kenmore 59662834200 Refrigerator
Kenmore 59662839200 Refrigerator
Kenmore 59662912200 Refrigerator
Kenmore 59662913200 Refrigerator
Kenmore 59662914200 Refrigerator
Kenmore 59662919200 Refrigerator
Kenmore 59663222200 Refrigerator
Kenmore 59663224200 Refrigerator
Kenmore 59663822200 Refrigerator
Kenmore 59663824200 Refrigerator
Kenmore 59666252400 Refrigerator
Kenmore 59666252401 Refrigerator
Kenmore 59666253400 Refrigerator
Kenmore 59666253401 Refrigerator
Kenmore 59666254400 Refrigerator
Kenmore 59666254401 Refrigerator
Kenmore 59666259400 Refrigerator
Kenmore 59666259401 Refrigerator
Defrost Thermostat Kit
$ 72.37
  In Stock
Stock Status
 In Stock

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 Special Order

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