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Why thermal fuse is blown - Whirlpool 24 in. DU1100XTPS Built-in Dishwasher

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If you have no power to your machine and the power is on it is the thermal fuse. If the fuse is blown you will get no power at all. To my understanding after talking to many people the thermal fuse is likely the first thing to go bad on a whirlpool dishwasher. A power surge to your unit would cause the fuse to blow or the control board to go bad.

Posted on Jan 27, 2013

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Posted on Jan 02, 2017

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If the dishwasher won't start the thermal fuse might have blown. The thermal fuse helps to prevent damage to the dishwasher by turning off power so that it doesn't overheat. Once blown, the thermal fuse will have to be replaced for the dishwasher to work. The thermal fuse is usually located in the control panel on the control board or mounted to the bottom of the tank behind the lower panel. The thermal fuse can be checked for continuity.

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Dryer won't start


This usually caused by a blown thermal fuse on the blower housing located behind the rear access panel. This thermal fuse is wired in series with the motor and if it blows, power to the motor is terminated and the motor cannot run. No dryer function works when the motor cannot run.

Unplug the dryer or disconnect power then remove the rear access panel. Locate the thermal fuse then bypass it for troubleshooting purposes.

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Bypass the thermal fuse by disconnecting the wires and joining it together. Insulate properly and plug the dryer back in. The thermal fuse is indeed blown and needs to be replaced if the dryer starts. Do not use the dryer with the thermal fuse bypassed due to fire hazards.

Clean the lint filter and make sure the vent system is not restricted then replace the thermal fuse including the cycling thermostat (thermistor for other models) as a standard operating procedure and preventive measure. The thermal fuse usually cuts out due to a failed cycling thermostat(thermistor for other models).

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Cabrio electic dryer has power but will not run


There is a thermal fuse wired in series with the motor and if it is blown, power to the motor is cut and cannot. No dryer function works when the motor cannot run. The thermal fuse usually blows due to a failed exhaust thermistor. Check for clogged lint filter and/or restricted vent system then replace both the thermal fuse and the thermistor if the thermal fuse is found blown open. This is a DIY repair which only requires very minimal effort with a screwdriver.

Disconnect power then remove the back panel and locate the thermal fuse and the thermal fuse on the blower housing.
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Click on the link below for some troubleshooting information before replacing the thermal fuse and the thermistor.

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Our Whirlpool dryer model #LER7646AQ0 will not start. Door switch checks for power with a power tester. Put new start switch in and still doesn't work. Do I need to use Ohm tester or will power tester...


This problem is commonly caused by a blown thermal fuse located on the blower housing. The thermal fuse is wired in series with the motor and the motor activates a centrifugal switch for the heating element when it runs. These setup makes the dryer fail to start and the heating element not to turn on if the thermal fuse is blown. The dryer seems to no work at all. Verify the condition of the thermal fuse by bypassing it and starting the dryer.

Disconnect power then access and bypass the thermal fuse on the blower housing. The blower housing is located on the rear left bottom of the dryer cabinet. Remove the rear panel to access the blower housing and so the thermal fuse.

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Bypass the thermal fuse by disconnecting the wires and connecting them together. Insulate them properly and plug the dryer back in. The thermal fuse is indeed blown and needs to be replaced along with the cycling thermostat if the dryer starts. Do not use the dryer with the thermal fuse bypassed due to fire hazards.


The thermal fuse and cycling thermostat are part numbers 3392519 and 3387134, respectively.

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This problem is commonly caused by a blown thermal fuse located on the blower housing. The thermal fuse is wired in series with the motor and the motor activates a centrifugal switch for the heating element when it runs. These setup makes the dryer fail to start and the heating element not to turn on if the thermal fuse is blown. The dryer seems to no work at all. Verify the condition of the thermal fuse by bypassing it and starting the dryer.

Disconnect power then access and bypass the thermal fuse on the blower housing. The blower housing is located on the rear left bottom of the dryer cabinet. Remove the rear panel to access the blower housing and so the thermal fuse.

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Bypass the thermal fuse by disconnecting the wires and connecting them together. Insulate them properly and plug the dryer back in. The thermal fuse is indeed blown and needs to be replaced along with the cycling thermostat if the dryer starts. Do not use the dryer with the thermal fuse bypassed due to fire hazards.


The thermal fuse and cycling thermostat are part numbers 3392519 and 3387134, respectively.

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1 Answer

Duet dryer doesn't run. control panel lights up. push on button and all you hear is a click. what do i do?


No dryer function works when the motor cannot run and the common issue is a blown thermal fuse located on the blower housing and wired in series with the motor. There will be no power to the motor when the thermal fuse blows and the motor cannot therefore run. Bypass the thermal fuse and if the motor runs, the thermal use is indeed blown and needs to be replaced. Do not use the dryer with the thermal fuse blown due to fire hazards.

Disconnect power then open the dryer door and remove the lint filter. Remove the screws from the toe panel and remove the panel. Remove the screws securing the lint duct and remove the duct.
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The thermal fuse can now be bypassed or replaced if necessary.
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Bypass the thermal fuse by disconnecting the wires and taping them together or jumping a wire between them. Once done, plug the dryer in then start it. The thermal fuse is indeed blown and needs to be replaced if the dryer runs. The thermal fuse is part number 3390719. Reassemble the dryer in reverse order of the disassembly steps.

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1 Answer

DRYER STOPPED RUNNING. ALL CONTROLS WORK, BUT WON'T START. HIGH LIMIT SWITCH GONE?


It's either of the thermal fuse on the blower housing or the thermal fuse on the heater enclosure is blown. These thermal fuses are wired in series with the motor and therefore, if any of them is blown will cause the motor not to run and hence the dryer not to work except the controls.

Disconnect power to the dryer prior to servicing to avoid the risk of electric shock.

Open the dryer door and remove the four screws located vertically along the inside lip of the door opening. These screws hold the front panel to the front shroud assembly.
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Once the four screws are removed, grasp and press in on the upper edges of the front panel posts then twist it inward to release the clips holding it to the cabinet. Tilt the top of the front panel and move it away from the dryer.
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Bypass the thermal fuse on the blower housing by disconnecting the wires and taping them together or connecting a jumper wire between them. Close the door then plug and start the dryer.
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The dryer should start and heat up if the blower housing thermal fuse is the culprit. Otherwise, the other thermal fuse on the heater enclosure is blown. Unplug the dryer then bypass the thermal fuse on the heater enclosure in the same way the first is bypassed to confirm it.
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Plug the dryer back then restart it. The dryer should start to confirm that the heater enclosure thermal fuse is blown. Replace the thermal fuse (part number 307473) together with the high-limit thermostat (part number 303396).

Unplug the dryer and unbypass the blower housing thermal fuse then plug it back and restart it. If the dryer fails to restart, replace also the blower housing thermal fuse (part number 33001762) together with the cycling thermostat.

Reinstall the front panel in reverse steps of the removal steps to complete the repair.

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Check for a blown thermal fuse. The thermal fuse is about an inch long and is just inside the rear of the dryer usually attached to or near the exhaust duct. The thermal fuse can be checked for continuity using a multimeter or ohmmeter. A lack of continuity indicates a blown thermal fuse. Hope this helped and best wishes.

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