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Customer Questions and Answers for Thermal Fuse by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM18022692
Manufacturer Part Number: WP306604

The Thermal Fuse is an OEM replacement part for Whirlpool dryers. This safety device monitors and protects heating elements inside the dryer. If temperatures rise too high due to a blockage or other issue, the fuse automatically opens the electrical circuit to cease further heating. 

Symptoms of a bad thermal fuse include:

  • Dryer failing to heat or stay warm during cycles
  • Fluctuating or inconsistent heat levels  
  • Tripped circuit breakers after drying

Causes of failure involve wear or damage from years of high heat exposure. Over time, components become brittle and less responsive.

This OEM Whirlpool replacement is also compatible with some Kenmore, Admiral, Roper, and Estate dryer models. 

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Questions & Answers

For Whirlpool Thermal Fuse (Part Number: OEM18022692)

1 Answer

Diana, You will want to check the hi limit thermostat on the unit which is part number WP303396. The thermal fuse would cause the entire dryer to not operate.

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1 Answer

Eric, Normally when the unit continues to run after the clothes are dry and does not shut off then the issue would most likely be the timer that is faulty.

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1 Answer

BubbleBoy, Hopefully the issue is a weak set of gas valve coils, 279834, You'll want to start the dryer on a heat setting/cycle and allow it to run 10 or 15 minutes, the remove the success panel in the right front corner and observe the gas valve operation. The glow bar should glow for 30 or so seconds, start to fade and the gas burner should ignite. If the burner doesn't ignite, suspect the gas valve coils. If all's ok, you'll have to suspect the Y305945 control switch. There are two momentary contact circuits in the switch, if they get stuck closed, the dryer can quit heating, and in some cases the dryer won't shut off at the end of the cycle.

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1 Answer

Fitz, The "thermal cut offs" WP307473 WP307473 (your dryer has two, one on the blower housing and one on the heater housing) are "one shot" fuses, if the circuit "opens" due to an over heat issue, the dryer won' start or heat. It's not likely a thermal fuse/cut off issue. At this point, you'll need to check the heater element, and make sure it's not shorted to ground, and remaining partially energized, and heating. Also test the cycling thermostat, a "closed" circuit across the two large, bottom terminals, and a resistance of 2400 ohms across the two small center terminals. When you heat the thermostat the circuit should "open" at 155 dgrs.

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1 Answer

Hello Gil. Check and see if the heater broke and grounded to chasis, or if any other wires are grounded. Be sure and check for a grounding issue at the terminal block. Also look for something inside the blower wheel causing the motor to lock up. Hope this helps.

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1 Answer

Hello Gil. Your series has to be 07 or later to use this part. It is located on the front of the blower wheel housing. Hope this helps.

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1 Answer

Hello Pete. You can test the cut-off with a multi-meter MA-DM1. It should read closed for continuity. If it is open, it is bad. Hope this helps.

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