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Thermal fuse blown twice, what could be problem?

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Clogged vent, or filter/compartment

Posted on Dec 13, 2008

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Maytag Neptune Model #MDE5500ATW How to tell if the thermal fuse is blown


If this THERMAL fuse is blown it would not operate at all. If it runs but don't heat it probably is a limit or the heater. If you see a lot of junk in the vent pipe AND it still runs then the heater limits are gone. If the vent it clear but filter housing or blower has an issue then it won't run and the thermal fuse is gone bye bye.

SERVICE MANUAL for slopefaced dryer

Sep 03, 2012 | Dryers

1 Answer

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.

Kenmore and Whirlpool Dryers Not Starting

Jun 17, 2011 | Whirlpool WED7300XW Dryer

1 Answer

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.

Jan 11, 2011 | Dryers

1 Answer

I have Model # LER5636EQ3 dryer it all of a sudden quit working in the middle of a drying cycle. I Checked fuses in house all OK. Checked to see if other cycles worked will not start or make a sound at...


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.

jahn27_41.jpg

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.

Dec 30, 2010 | Whirlpool LER5636P Electric Dryer

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.

Oct 10, 2010 | Whirlpool Dryers

1 Answer

Thermal Fuse Blows


This is usually caused by a clog in the venting. If your vent is clear I would replace the cycling thermostat for a free video on checking these components go to www.appliancehelponline.com/servicemanual.html
The cycling thermostat tells the dryer when it has reached it's high and low temperatures.
Hope this helps

Mar 21, 2010 | Whirlpool Dryers

2 Answers

My roper dryer sparked and then shut off and wont work now.


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.

Aug 29, 2009 | Dryers

1 Answer

It is a gas dryer and I have had a tech out twice to replace a part to make it heat up and now it is doing the same thime again (not heating up).


Hello Friend, Your problem is very simple to fix. You need a thermal fuse, very simple and affordable to replace. To replace the thermal fuse just remove back cover of dryer and look down where the air blows out. Now, just to the left where all the wires are you will see a white plastic part with two wires plugged into it. This part is called a thermal fuse. Just remove these wires and replace the thermal fuse. Your solution is simple. It sounds like your dryer is working properly, and your actual problem is a blockage somewhere in your 4 inch exhaust tubing. Check it and make sure it is not clogged up with excessive lint. Also if your tubing is clear you need to check your connection where it travels thru the wall etc. It would be a good idea to find the actual location where it exits to the ouside and check for good airflow. If you have poor or no airflow this is why your thermal fuse has blown out. Poor venting of dryer causes overheating and therefore blowes the thermal fuse. I Hope I have helped you, Tim.

Jun 05, 2009 | Kenmore Dryers

1 Answer

Blown thermal fuse on Kenmore dryer


I need the serial# to assist you better.

Thank you for trust fixya.com

May 14, 2009 | Dryers

1 Answer

The thermal fuse


Check yo see if you have any air restrictions by feeling the vent that exits the house. You should have strong air flow. Any restriction, even if small will cause the dryer to overheat and blow the fuse. Thanks Dave www.washermd.com

Dec 13, 2008 | Whirlpool GEW9250 Electric Dryer

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