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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)

Phil for Model Number 106.52709100

Freezer cold; refrig warm. I'm assuming the control board regulates temperature in the refrigerator using the thermistor sensor and diffuser (a/k/a vent damper). If the thermistor is ok, then possibly either the control board (which the thermistor connects to, via the wiring harness), or the diffuser could be bad. Is this a good assumption; and how to check the vent damper? Is the vent damper controlled electrically? And thanks for running, in my opinion, THE best site for appliance repair & parts.

1 Answer

Hello Phil. Is there any frost build up on the back wall of the freezer? If so, you could have a defrost problem. To check the thermister, you will need to ohm it out. Here is a chart to go by. Thermistor Temperature Resistance 77°F..................10,000 ohms 36°F..................29,500 ohms 0°F....................86,300 ohms You can test this with a multi-meter MA-DM1. Here is a link on how to use a multi-meter. Hope this helps. http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html

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1 Answer

Hello Julian. The thermistor reads the temperature of the refrigerator. If the temperature is to cold or to warm inside the refrigerator, then the thermistor could be bad. You can test the thermistor and see if it is bad. Here is a chart to go by. Thermistor Temperature Resistance 77°F..................10,000 ohms 36°F..................29,500 ohms 0°F....................86,300 ohms You can test this with a multi-meter MA-DM1. Here is a link on how to use a multi-meter. Hope this helps. http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html

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