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Customer Questions and Answers for Dryer Door Switch Assembly by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM18025689
Manufacturer Part Number: WP3406105

The Dryer Door Switch Assembly is an OEM part for Whirlpool dryers. This component is responsible for detecting when the dryer door is open to prevent the dryer from operating during this state. It ensures safety and energy efficiency by halting the drying cycle if the door is accidentally opened, preventing heat loss and potential hazards.

Causes for a malfunctioning dryer door switch assembly include physical damage from slamming the dryer door, wear and tear from regular use, or electrical issues that impair its function.  

Symptoms of a bad Dryer Door Switch Assembly include:

  • Dryer not starting when the door is closed
  • Dryer continuing to operate when the door is opened
  • The dryer starting intermittently or requiring the door to be slammed to start

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 Dryer Door Switch Assembly (Part Number: OEM18025689)

1 Answer

Dan, You have the correct part number WP3406105 it has been "substituted" by the manufacturer as a cost savings effort. This door switch will work on dryers with or without a drum light. If you have a drum light your internal wire harness will have three wires, if theres no drum light, the harness will have two wires. but the wires will align properly and supply power to the proper circuit, regardless.

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1 Answer

Hello Mike. Check and see if the belt is broke or the motor is locked up and replace the part that is bad. The element should get hot unless the motor is running, unless it is shorted out or the belt is broke and the motor runs, but the drum does not turn.

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1 Answer

Hello Robert. Based on the information you provided, it sounds like the transmission 3360629 is bad and will need to be replaced on the unit.

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1 Answer

Hi Steve. It is best to replace it with a new lid switch part # WP3406105. Dryer Door Switch Assembly - Includes wire harness and plug. Thank You.

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1 Answer

Hello William, If the door switch were bad, the unit wouldn't run at all. Your problem is either a bad connection, a bad timer, or a bad centrifical switch in the motor. Or, we should probably back up and check the obvious first. Turn the breaker off and back on and check to make sure 240Vac is present at the terminal block. You see, the only part of the dryer that is 240Vac is the heating element. Everything else in the unit is 120Vac. Therefore the dryer can run and not heat with only 120Vac supplied to the unit, (as long as the leg suppling the motor 120Vac is good). If you don't see the 240Vac, the problem is the breaker, the recepticle, or the wiring. If you do have 240Vac, your problem will be one of the three problems I mentioned earlier.

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1 Answer

Hello PJ. Disconnect the power to the unit and remove the lint filter from the top. Then remove the screws under the filter and release the clips in the front of the dryer and raise the top of the dryer. Once raised, you can access and replace the dryer door switch. Hope this helps.

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