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Customer Questions and Answers for Cycling Thermostat (Dryer) by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM18072510
Manufacturer Part Number: WPY304474

This cycling thermostat regulates the dryer's heat by sensing exhaust air temperature and switching the heater on and off. Replacing a faulty thermostat restores consistent drying performance and helps prevent underheating or overheating.

  • Monitors dryer air temperature and cycles the heating element or gas burner to maintain the proper range
  • Helps prevent overheating that can trip safety limits
  • Failure can result in no heat, low heat/long dry times, or heat that doesn't cycle correctly
  • May cause intermittent shutdowns due to temperature issues
What's included: 1 cycling thermostat Install notes:
  • Disconnect power; if gas, also shut off gas supply before servicing
  • Thermostat is typically mounted on the blower housing or exhaust duct
  • Note/transfer wires to the same terminals and secure the thermostat with existing screws; ensure it seats flush to the housing
  • After replacement, clean lint buildup and verify proper vent airflow to avoid repeat temperature problems

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Questions & Answers

For Whirlpool Cycling Thermostat (Dryer) (Part Number: OEM18072510)

1 Answer

Robert, you have options you can install the WPY304475 cycling thermostat it cycles open at 140 dgrs. Or you can install WPY304474 cycling thermostat which cycles open at 150 dgrs. either one will work in your machine. In the old days most servicers installed the 150 dgr. thermostat, for a slightly better performance.

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Mike for Model Number DE512

How can I test the thermostats to determine if I need to replace or not? the heating element is definitely broken and needs replacing. When it happened, I heard intermittent clicking sounds from inside the unit. this was with the door open. i checked continuity and the HiLimit Stat and 304472-2 read fine. when I check 304475-2 (this is a 3 terminal stat) I get a good reading going from both bottom terminals (blue wire to purple) but I dont get continuity going from the the orange terminal (top) to purple. Does this mean it is faulty? thank you, Mike

1 Answer

Mike, The thermostat in question sounds like it is reading correctly. Once the temperature gets to a certain point the 2 terminals that you have continuity through would then no longer have continuity and there would be continuity on the orange to purple at that time.

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1 Answer

Vincent, The cycling thermostat is a good place to start, but you also need to check the exhaust vent and hood for possible clogs and restrictions. Also check the drum seals. at this stage, we wouldn't be surprised if they have holes worn in them and are allowing the heated air to escape from the drum, causing a heat issue that will not allow power to the timer motor and advance the timer.

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1 Answer

Hi Jim. It's always awesome to get positive feedback. Thanks for taking the time to respond. We are glad you are 'up - and - running once again. Have a nice day. Thank - you.

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1 Answer

Hello Jim! It sounds like the secondary coil has went out in your dryer. It is suggested to replace all coils at the same time. Your coil kit is part number 12001348. Thanks!

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1 Answer

Hello Sandra. You will need to remove the back panel of the dryer. The cycle thermostat is located on the blower wheel housing. Hope this helps.

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