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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: OEM18062040
Manufacturer Part Number: WPW10384183

The Thermistor is an OEM part for Whirlpool refrigerators. It is responsible for monitoring and regulating the refrigerator's temperature by sending temperature readings to the control board, which adjusts the cooling system accordingly. This ensures that the refrigerator maintains a consistent and optimal temperature for food preservation.

You should replace this thermistor if it becomes faulty. Causes of a bad thermistor can include electrical failures, physical damage, or wear and tear over time.

Symptoms of a bad Thermistor include:

  • Inconsistent or incorrect temperatures in the refrigerator
  • The refrigerator running continuously or not running enough
  • Frost buildup or inadequate cooling

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: OEM18062040)

1 Answer

Dan, Check the evaporator coils and make sure that there is a good frost pattern from top to bottom. If there is not a full frost pattern, then this may be a sealed system failure and need to have service to repair.

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1 Answer

Smith, Unfortunately, the manufacturer does not have a temperature chart for the thermistor on this unit. The resistance at 77 degrees should be 2.7K ohms.

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2 Answers

Hello Herman, the control board uses a thermistor attached to the evap coil for sensing defrost temps, access the coil and check if the thermistor is still clipped tightly to the coil, if it has come loose it will cause defrost problems.

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2 Answers

Herman, This would be a defrost issue in which you will need to test the defrost heater, thermostat and thermistor. If they are good then this will be a faulty control board.

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1 Answer

Jan N, If the unit is running and just getting down to temperature then you will likely have a defrost or a sealed system type issue. If the unit turns off before getting down to temperature then it could be a thermistor or a control issue. The thermistor can be checked for proper resistance with a multimeter.

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1 Answer

Greg, The model number listed is not showing up as a good model. Please verify the model and resubmit your question.

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1 Answer

Jan, there will be a rectangular thermistor cover on the left side of the appliance liner that would need to be pinched at the sides to be removed. This will expose the thermistor WPW10384183 for replacement.

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1 Answer

Hello Steve, there are 3 thermistors located in this model please repost your question with which section you are asking about.

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1 Answer

Bill, the model number provided would not utilize a thermistor. Instead, this model would use a mechanical thermostat W10866230 located in the refrigerator temperature control housing.

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1 Answer

Ang, the thermistor W11438736 of the refrigerator would need to be tested for resistance. It should measure 2.7K Ohms at 77°F, 7.6K Ohms at 37°F, 8.8K Ohms at 32°F, 22.7K Ohms at 0°F, and 37K Ohms at -15°F. If the thermistor does not measure within 10% of resistance in comparison to the temperature it is exposed to, it would need to be replaced. If it does measure within the tolerance, the main control WPW10643378 would be the likely cause of failure.

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