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Customer Questions and Answers for Thermistor by Whirlpool

4.89 (64)
By: Whirlpool
Part Number: OEM18040551
Manufacturer Part Number: WP8577274

The Thermistor is an OEM part for Whirlpool brand dryers. It is a temperature-sensing resistor that monitors air temperature changes during the drying cycle. The thermistor provides feedback to the control board on heating element performance and internal air condition. 

Symptoms of a failed thermistor include:

  • Inaccurate temperature readings and selections  
  • Improper or incomplete drying
  • Safety issues from overheating due to lack of feedback
  • Error codes displayed on the control panel

Causes can be related to normal wear and environmental exposure over time. Failure prevents the dryer from achieving optimal drying conditions.

This OEM Whirlpool part can also be used on Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore/Sears brand appliances.

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Questions & Answers

For Whirlpool Thermistor (Part Number: OEM18040551)

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Answer

Mike G., start with the voltage at the terminal block, you should read 240 volts from black to red, if the voltage is correct, with the dryer running, you should read 240 volts at the 2 terminals of the heating element. If voltage is not there, make sure there is voltage at the heater relay on the control board, at the common pin, a red wire, there should be 120 volts, if there is, you may have a centrifugal switch on the motor that is bad, you would need to replace the motor, part number is [279787 ], the board is part number [3978918]. This is taking into account the thermal fuse and heating element is good.

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Answered by AppliancePartsPros.com   |   Monday, January 13, 2020

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