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Customer Questions and Answers for Dryer Thermister by Whirlpool

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    • Part Number: AP3919451
    • MFG Part Number: 8577274
    • Made by: Whirlpool
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For Whirlpool Dryer Thermister (Part Number: AP3919451)

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My dryer cuts off before the clothes are dry. I checked the dryer vent, and cannot find the cycling thermostat does the thermoister take place of the cycling themostat

Jeff for Model Number GEW9250PW-1

ANSWER Jeff, Yes the thermistor 8577274 operates in place of the cycling thermostat. It should have a resistance of 10,000 ohms resistance at room temperature. The thermistor is a "NTC" (negative thermal coefficient), the warmer the environment the resistance drops (100 dgrs. F. = 5.0 to 7.0 k ohms resistance). Your most likely issue is the drum moisture sensor bars 3387223 or the wiring to the control board. If the bars don't sense the moisture in the clothes, or the wiring has a short to ground, the control senses the clothes are dry and shuts off, prematurely. Check the wiring and clean the sensor bars, with rubbing alcohol, then test the sensor circuit at the P2 connector on the control board, it should be an open circuit from each wire to chassis ground, and open circuit across both wires, then when you place something wet or metal across the two bars, there should be a resistance reading across the two wires. 

Answered by AppliancePartsPros.com   |   Wednesday, November 14, 2012

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