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Customer Questions and Answers for Temperature Selector Switch by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM18025128
Manufacturer Part Number: WP3399639

The Temperature Selector Switch is an OEM replacement part for Whirlpool dryers. This electro-mechanical switch allows consumers to choose between heat settings that adequately dry different fabric types.

Causes of a damaged selector switch can include regular wear from hundreds of cycles over the appliance's lifetime. Mineral deposits accumulating inside linkage mechanics may cause rotational movements to stiffen. The physical impacts of shifting internal contact positions could potentially lead to switching issues as well.

Symptoms of a faulty temperature selector involve:

  • Inability to change heat level for desired drying performance  
  • Temperature remaining stuck on highest or lowest settings
  • Lint filter or duct cleaning lights failing to illuminate properly

This OEM replacement is compatible with some Kenmore and KitchenAid electric dryer models too.

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Questions & Answers

For Whirlpool Temperature Selector Switch (Part Number: OEM18025128)

1 Answer

Tommy, If the connector is charred at the temp switch would recommend to replace the temp switch and replace any terminals that may be damaged. The timer would most likely also need to be replaced unless you just want to use the auto cycle.

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1 Answer

RLK, It would be unlikely that the temp switch would cause the unit to overheat. You will want to check the venting of the unit from the blower housing to the outside of the home. This is typically the cause for overheating. If this checks ok then the cycling thermostat would be the other cause.

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1 Answer

Hello Jose. Check and see if the flame short cycles or only comes on once and then not again. If so, the coils 279834 are bad and will need to be replaced on the unit.

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1 Answer

Jujube, We don't expect you to have a problem. Especially if you have vacuumed out the dryer and heater assembly. A 5400 watt heater element can and will produce an odor as it is heating, regardless of temperature selected(high or low), and on air fluff, there is no power to the element, so no odor. In most cases the element odor is "masked" by fabric softener or fabric softener sheets, and you don't notice the odor.

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1 Answer

Hello J.H., I would first test the voltage to the unit with the unit on to see if there is a voltage drop when under load. If so, there could be an issue with the breaker or the associated wiring. This test should be done at the terminal block where the power cord connects to the unit. If the power supply checks out good and the prongs on the power cord prongs have no burned spots on them, the issue can only be the timer motor, the timer contacts, the heating element 279838, or the motors' 279827 centrifugal switch. Since the timer has been replaced, this eliminates the timer contacts and the timer motor.

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1 Answer

Jeff, The thermal fuse on the blower housing is what you want to check to see if it has continuity. If not then it will need to be replaced. The other thing that you will want to check is to see if there is power getting to the motor when start is pushed. If there is power to the motor then the motor would need to be replace and if not then it most likely will be a bad timer if the door switch is ok.

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