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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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Dan B. for Model Number 11063954102 (Kenmore)

This is a follow up question to the previous question and answer below. I performed the suggested test below and received the following results. Removed the top element wire (which went to themostats) and started dryer; received 120 volts to ground on both top and bottom element terminals. Removed bottom element wire (believe went to motor), started the dryer and had no voltage on either top or bottom terminals of the heater element when I went to ground. From previous answer is this suggesting a timer problem? Also in the control panel and wiring diagram I noticed their is both a heater relay and a motor relay. Is there a way to test the heater relay before replacing the timer? Electric Dryer runs but does not heat up. I have full continuity on the heater box cut off thermostat, the hi limit thermostat,the heating element and the thermal fuse. I have approximately 10,000 OHMS on the Thermistor. If I turn the unit on there is no power getteing to the heating element. I am begining to think it might be something else like the timer. Your thoughts? Asked by Dan B for Model 11063954102 (Kenmore) Dan, Do you have 220/240 VAC at the terminal block on the back of the dryer, with the cord plugged into the socket ? be careful, that's a live voltage test. You may want to try this, disconnect one of the wies from the element terminal, and start the dryer on a heat cycle, check the empty terminal of the element to chassis ground for 120 VAC, if the wire traces back to the thermostats, you'd have an open wire or a bad contact at the timer. Check from the wire terminal of the wire you removed to chassis ground for 120 VAC, if the wire traces back to the motor, you would have an open wire or a bad heat circuit in the motor switch. Thanks and Good Luck Read more: http://www.appliancepartspros.com/questions-for-WHIRLPOOL-Dryer-thermister-AP3919451.aspx#ixzz1fTrnwqSM http://www.appliancepartspros.com

Answer

Hello Dan. Yes, based on the test you performed, the timer WP8299771 is bad and will need to be replaced. Hope this helps.

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Answered by AppliancePartsPros.com   |   Monday, December 5, 2011

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