Part Location Diagram of WP2321800 Whirlpool Defrost Thermostat
See part 28 in the diagram
( Grid squares measure 1x1 inch )
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Defrost Thermostat WP2321800

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PartSelect Number PS11740448
Manufacturer Part Number WP2321800
Manufactured by Whirlpool
Product Description

Defrost Thermostat Specifications

This part keeps the evaporator from overheating during the defrost cycle.
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Troubleshooting
This part fixes the following symptoms:
Freezer not defrosting
This part works with the following products:
Refrigerator.
This part works with the following products:
Whirlpool, Kenmore, Maytag, KitchenAid.
Part# WP2321800 replaces these:
AP6007334, 2314158, 2319915, 2321800
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Questions and Answers

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5 questions answered by our experts.
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  • 1
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Peter
July 11, 2019
Where is the defrost thermostat located. Your diagram only show that it is at the end of a cable.
For model number CT21GKXRQ02
PartSelect logo
Hello Peter, Thank you for the question. The thermostat is attached to the main wire harness and then clips to the evaporator coils. Hope this helps!

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Mark
March 9, 2020
My freezer gets snow on rear wall, ice cream is soft and refrigerator is not getting cold
For model number GR2FHTXVB00
PartSelect logo
Hi Mark, Thank you for your question. If the refrigerator and freezer are too warm, there are some parts that you will need to check to see which one is causing the issue. You will need to check the capacitor, the evaporator fan motor, the start relay and the condenser fan motor. You will need to test the parts with a multi-meter. Here is a link to one of our videos on YouTube that you may use as a general reference on how to use one, https://www.youtube.com/watch?v=bWC44fHn0As. If you are also find frost on the evaporator coils, this will prevent air from flowing over the coils. No air flow will cause the refrigerant in the coils to remain in a liquid state and keep it from vaporizing. The refrigerant will travel past the coils and will eventually end up in the compressor and cause damage to it. If there is frost on the evaporator coils, this may caused by the following: 1. A bad defrost heater or the other components of the defrost system. (The defrost system consists of the defrost heater, the defrost timer and the thermostat/defrost control.) 2. High Humidity 3. An evaporator fan motor not working correctly or not at all. 4. No load on the evaporator coil. 5. Dirty evaporator coils. 6. Defrost intervals that are set too far apart. We hope this helps. Thank you and have a great day.

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Pat
September 5, 2023
Intermittent defrosting. The freezer periodically ices up raising the freezer to the 20s & the fridge the 40s. It seemed to make a difference replacing the 2 plug 6 terminal "digital" timer with a cheaper more common single plug 4 terminal "mechanical" with a manual timer advance as suggested by the you tube "experts". It will run fine for days & then it starts warming. Unplugging for about 3 hours seems to reset everything including thawing the drain line. I observed the coils with the cover off & saw the heater glow. the 1st hint of a problem is the panel in front of the evaporator starts snowing up. Inserting several manual cycles seems to delay icing. I can see the timer motor moving. Defrost cycles appear to last 8-12 minutes. I hate to give upon this thing. When it's on at max settings it hits -4 on top & 31 down below. At recommended settings +5 & 38. Mechanically, it seems like it's working great until it hits its control issue. I hope I'm giving you enough info. Thanks for any help.
For model number M1TXEMMWB04T
PartSelect logo
Hi Pat, thank you for the question. Based on the description that you have provided, we would recommend checking the defrost control board, part number PS11740238, as it is most likely faulty and may need to be replaced. We hope this solves your problem!

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Steven
November 10, 2022
My unit seems to defrost too long. There is frequently water in the fridge portion that is coming from the freezer. There is also a layer of water that is frequently frozen on the bottom of the freezer. What part might help this? I am assuming that the defrost system is malfunctioning. Thank you!
For model number ET1CHEXVQ01
PartSelect logo
Hello Steven, thank you for contacting us. We would recommend checking the following parts to fix your issue: Defrost Thermostat, part number PS11740448, Defrost Heater Assembly, part number PS11748961, and Adaptive Defrost Control Board, part number PS11740238. We hope this helps! If you need help placing an order, customer service is open 7 days a week. Thanks again for your great question.

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Will
February 23, 2024
Recently clean debris from bottom coils. Now freezer won't defrost. Is there a way to know if it's the fan or the thermostat? Should I replace both? I Unplugged it and fully defrosted it. However it's frosting back up. Any guidance would be appreciated
For model number ET1FHTXMQ04
PartSelect logo
Hi Will, thank you for reaching out to PartSelect. You can check both parts using a multimeter to know which one is faulty. The thermostat should test closed for continuity. The evaporator fan motor should spin at 3000RPM. We hope this is helpful!

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Model Cross Reference
This part works with the following models:
PartSelect Number: PS11740448
Manufacturer Part Number: WP2321800
Brand
Model Number
Description
Kenmore
10660232900
Refrigerator
Kenmore
10660232902
Refrigerator
Kenmore
10660232903
Refrigerator
Kenmore
10660232904
Refrigerator
Kenmore
10660233900
Refrigerator
Kenmore
10660233902
Refrigerator
Kenmore
10660233903
Refrigerator
Kenmore
10660233904
Refrigerator
Kenmore
10660234900
Refrigerator
Kenmore
10660234902
Refrigerator
Kenmore
10660234903
Refrigerator
Kenmore
10660234904
Refrigerator
Kenmore
10660239900
Refrigerator
Kenmore
10660239902
Refrigerator
Kenmore
10660239903
Refrigerator
Kenmore
10660239904
Refrigerator
Kenmore
10661102110
Refrigerator
Kenmore
10661103110
Refrigerator
Kenmore
10661104110
Refrigerator
Kenmore
10661109110
Refrigerator
Kenmore
10661182900
Refrigerator
Kenmore
10661182901
Refrigerator
Kenmore
10661184900
Refrigerator
Kenmore
10661184901
Refrigerator
Kenmore
10661189900
Refrigerator
Kenmore
10661189901
Refrigerator
Kenmore
10662152110
Refrigerator
Kenmore
10662153110
Refrigerator
Kenmore
10662154110
Refrigerator
Kenmore
10662159110
Refrigerator
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