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Customer Questions and Answers for Start Switch by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM18025629
Manufacturer Part Number: WP3404233

The Start Switch is an OEM part for Whirlpool dryers. This switch is essential for initiating the drying cycle, allowing the user to start the dryer by pressing the button. It ensures the dryer begins operation and runs through the selected cycle properly. 

Causes of a bad start switch can include electrical issues such as short circuits, mechanical wear from frequent use, or damage due to moisture or impact.

Symptoms of a bad start switch include:

  • The dryer not starting when the button is pressed
  • Intermittent operation or the need to press the button multiple times to start the dryer
  • No response or sound when the start button is engaged
  • The start button feeling loose or not clicking properly

This OEM part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore models.

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Questions & Answers

For Whirlpool Start Switch (Part Number: OEM18025629)

Mark for Model Number MEDC200XW3

I have a MEDC200XW3 that runs as soon as the timer is advanced without needing to press the start buttons. The dryer also runs with the door open, and even with the door switch disconnected. On top of this the heating element won't energize. I've replaced the heating element and all limits/thermostats (dryer worked fine after this for a few days). Most recent repair was replacing the motor. The timer reads open/closed correctly. Start switch and door switch only read closed when depressed. What is left to check?

1 Answer

Mark, it would be recommended that the wiring is checked for a grounded out connection. Based on the information provided, as the door switch is operating properly the motor should not be able to operate unless there is a grounded connection somewhere between the motor and the door switch. In regards to the element not energizing, once the wires are checked for any grounded out connections as well as ensuring the wires are connected to the necessary terminals, the terminal block would need to be tested for 240VAC from the black wire to the red wire. If there is not 240VAC, the next step would be to test each side to neutral to identify where there is not 120VAC. If there is 240VAC, and the wires check as being connected properly, the last possibility would be the timer WP8299779.

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1 Answer

Dave, You can open door hold the door switch or tape it closed and when pressing start manually spin the drum by hand. If it starts you need a motor.[easiest way]

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Jimmy J. for Model Number 3404233

Just got the 3404233 power switch for my Whirlpool Kenmore 600 series dryer. There are no wiring diagrams on the back of the unit or the plate to access the knob area. There was a paper in that void, but it looks to be for the entire dryer. I don't see anything detailing which of the four wires go to which post. http://i.imgur.com/bagyiNE.jpg In fact, the only thing that addresses this is a warning: "Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation." Unfortunately, I did not see this until after it was disconnected. The example install video is for a completely different part. Does anyone know which wire goes to which post? There are two blacks,a brown, and a red/white wire.

1 Answer

Hello Jimmy, I'm sorry but we will need to ask you to post a new question including the model number from your units' I.D. tag so we can pull the wiring diagram, (if available). This would be the only way we can accurately advise on the wiring of the part. Thank you for your patience and understanding in this matter.

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Al for Model Number Kenmore electric dryer - model 110.64832400

Hi. My dryer doesn't stop when I open the door - so it appears that the dryer door switch assembly is bad. It also has another issue. When I press the 'push to start' button when it's in the 'signal on' position, the dryer starts correctly. But when I switch it to the 'signal off' position and press the 'push to start' button, the dryer will NOT turn off. Does that mean that the 'push to start' switch is bad ... or could that ALSO be due to the bad dryer door switch assembly ... OR is the second issue caused by something else?

1 Answer

Hello Al. You will need to check the signal switch and see if it is shorted out. If not, then the timer will need to be replaced along with the door switch.

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Al for Model Number Kenmore 80 series electric dryer - model 110.64832400

I think my dryer has 2 problems. (1) If the dryer is running and I open the dryer door, it continues to run - that problem should be the Dryer Door Switch Assembly. (2) The dryer 'Push to Start' button will successfully start the dryer when the button is in the 'Signal On' position. The 'Push to Start' button will NOT turn the dryer off if it is pressed when in the 'Signal Off' position. Is that a problem with the 'Push to Start Switch' ?

1 Answer

Al, The door switch WP3406107 or the wiring at the door switch is definitely a problem, the switch will most likely need to be replaced. The push to start switch WP3404233 should not be the issue. It is a "momentary" contact switch and completes the neutral side of the circuit to the motor. Once the motor starts and runs, the switch is out of the circuit. Check the signal switch circuit to make sure it "opens" and "closes" when the control switch is on or off. Then check the "T" terminal to the 'W" terminal, on the timer to make sure the circuit is "closed" on all the settings except the wrinkle guard setting.

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1 Answer

Crystal, Just as a test you could connect the 2 leads from the thermal fuse together to see if the dryer will start. If it will then you will need to replace the thermal fuse but do not use the unit until the part is replaced as it is a safety device. If the thermal fuse does turn out to be bad then you will want to check to make sure that the vent is clear from the blower wheel all the way to the outside of your home.

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1 Answer

Hello John, If there were 120Vac on all prongs, there would be no use for the switch since a switches job is to discontinue or pass the voltage. You will need to refer to the wiring diagram to discern the wiring and determine which should have voltage and which is the load side of the switch. We can assist you further if you could please re-post with the verified model number from the units' I.D. tag.

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Robert for Model Number MEDC200XW1

Hello, I needed to check an issue with my dryer. The timer wouldn't advance so replaced with W10185988 and that part works great. However like similar posts when I turn the timer it immediately starts. May be the start switch. I am concerned though when I open the door the drum stops turning as it should but I noticed a glow and the element doesn't cut off it continues to glow and doesn't fade? Has something else grounded out or could this just be a symptom of the start switch? Thank you

1 Answer

Hello Robert. You need to look for a grounded wire touching metal and causing these issues with the unit.

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1 Answer

Hello Earl. You can use the wiring diagram on the unit to install the wires. If the switch and the door switch is good, check the thermal fuse and if it is good, replace the motor on the unit.

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