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Customer Questions and Answers for Thermistor (Temperature Control) by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM18022842
Manufacturer Part Number: WP31001590

This temperature-control thermistor (temperature sensor) feeds accurate temperature data to the control so your appliance can cycle components correctly and, where applicable, manage defrost. Replacing a faulty sensor restores stable operation and consistent performance. What it does:

  • Senses temperature and varies resistance to report conditions to the control
  • Helps the control regulate system cycling for proper operation
  • Supports defrost logic where applicable to prevent coil icing
  • Common failure signs: erratic temperature control, short/long cycling, icing on the evaporator, or unexpected shutoffs
What's included:
  • 1 thermistor
Install notes:
  • Disconnect power before servicing
  • Note the original sensor location and wire routing; install the new sensor in the same position
  • Transfer any mounting clip or sleeve from the old sensor if needed
  • Fully seat connectors and route wiring away from sharp, hot, or moving parts

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$53.37
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Questions & Answers

For Whirlpool Thermistor (Temperature Control) (Part Number: OEM18022842)

Safraz Y for Model Number maytag gas dryer modle #mdg4806aww

My dryer was taking very long to heat up, so i open the unit up and started checking all the fuses and sensors etc. I replace the gas valve coils and it heated up right away. But I got no continunity on the thermistor, so I order a new one part# 31001590. When I got it I check it but got no continunity also on the new one. Do I need to add heat with a blow dryer and then check it for continunity or did I get a new bad thermistor? Is a no or a nc part and what does the part really does? pls help

1 Answer

Safraz, This is a thermistor that you will check resistance on. You should have approximately 10,000 ohms resistance and is used in conjunction with sensor bars.

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1 Answer

Hello Tom. Should read 10K at room temp. If it is 12.74K, at room temp, it is bad.

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1 Answer

John If you are getting no continuity through the thermistor this means that it is bad and needs to be replaced.

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1 Answer

Hello Froggy, The thermal fuse should always read as a closed circuit. If it is open then it is bad.

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1 Answer

Hello Bobby! Check your venting system and make sure it is not clogged. Try doing a load without the vent hooked up and see if the same issue occurs. It could be due to the thermistor or the element, however, before changing any parts we would recommend testing the unit without the vent. Hope this helps.

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