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Customer Questions and Answers for Thermistor by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM18018210
Manufacturer Part Number: WP2188819

The Thermistor is an OEM part for Whirlpool refrigerators. It plays a critical role in regulating the temperature within the refrigerator and freezer compartments by monitoring and sending temperature readings to the control board, which then adjusts the cooling system accordingly.

Causes of a bad thermistor can include electrical faults, exposure to moisture, or physical damage from mishandling. A faulty thermistor can lead to incorrect temperature readings, causing the refrigerator to overcool or not cool sufficiently.

Symptoms of a bad Thermistor include:

  • Inconsistent temperatures within the refrigerator or freezer
  • The refrigerator running constantly or not at all
  • Spoiled food due to improper cooling
  • Error codes related to temperature regulation

This OEM part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore models.

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Questions & Answers

For Whirlpool Thermistor (Part Number: OEM18018210)

1 Answer

Pkcouch, The resistance of this thermistor should be 2.7K ohms at room temperature and if it is not getting that reading or is showing an open circuit then it would be faulty and need to be replaced.

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1 Answer

Josh, The temperature sensor for the freezer will be part number WP2188819 and should be located on the upper right side of the freezer section. Maybe behind a cover.

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1 Answer

Jim, as the thermistor has been replaced, the failure would be in the main control 8201658 based on the information provided. Unfortunately, this part has been discontinued by the manufacturer and is no longer available.

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1 Answer

Phillips, if the compressor is running non-stop to try to reach temperature, and the condenser coils are clean, then there would be a sealed system issue that would require an EPA certified tech to properly diagnose and repair.

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1 Answer

Max, The thermistor on this unit should read approximately 10K at room temperature.

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1 Answer

Jeff, the defrost heater WP2323198 would need to be tested for resistance and should measure between 21-27O. The entire defrost circuit can be tested from the main control WP2313177 (with the refrigerator unplugged) from the connection P1 pin 3 (pink wire) to pin 2 (white wire) for resistance. If there is not a resistance value measured, and the defrost heater tests within tolerance when tested directly at the heater, then there is a wiring issue. If the resistance checks good from the main control, then the main control has failed. Unfortunately, the manufacturer has discontinued the main control and it is no longer available.

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1 Answer

Hello Sandi, yes, it's likely the compressor had a problem and damaged the compressor run circuit in the main control board, unfortunately the main control board part 8201528 is no longer available. To test the compressor would require an appliance tech to check it.

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1 Answer

Tony, Both WPW10425252 Cover have tabs on the side/end of each cover " Depress the tabs on either end of the Thermistor cover and remove." A small flat blade screwdriver may come in handy to carefully press in on the tabs.

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