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Thermal fuse blown twice.. what to check next

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You might want to check on the thermostat. It could be allowing the machine to get too hot which would be the reason for the thermal fuses blowing. You do not mention the make of machine, but see your appliance parts supplier and find out from him if the thermostat is adjustable or if you need to replace a fixed temperature one.

Posted on May 26, 2011


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I have voltage to dryer, door switch checks good, start switch checks good, but dryer will not start. What can I check next?

Check the continuity of the thermal fuse located on the blower housing. This thermal fuse is wired in series with the motor and once blown, power to the motor is terminated and the dryer will not start. Also the power to the heating circuit is activated through the motor centrifugal switch. The dryer will therefore not heat once the motor cannot run.

Disconnect power then access the thermal fuse on blower housing.

Dryers with lint filter on the front.

Dryers with lint filter on the top.

You can bypass the thermal fuse for troubleshooting purposes by disconnecting the wires and connecting them together. Insulate the connection 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.

Let us know if you need further advice but indicate the exact model number of the dryer.

Jan 28, 2011 | Kenmore 62622 Electric Dryer

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
The cycling thermostat tells the dryer when it has reached it's high and low temperatures.
Hope this helps

Mar 21, 2010 | Whirlpool Dryers

1 Answer

Air Flow

well it to me sounds like the AF, interface on the Brain board is faulty? I mean if you have replaced the thermal fuse, twice, & I guess you replaced it and it worked... for a while or? I mean thats all there is, sensor.... to ... Interface Brain (to interpret and action.)
If it is the thermal fuses alone, perhaps they are too low a temp setting? you could safely try the next range up?

Feb 17, 2010 | Whirlpool WED6600V Electric Dryer

1 Answer

There is no heat in the dryer. I just changed out

Check for a blown thermal fuse. It's about an inch long and is usually located inside the rear of the dryer attached to or near the exhaust duct. It can be tested using a multimeter or ohmmeter. Check for continuity. A lack of continuity means a blown thermal fuse. Sorry for your trouble and best wishes.

Sep 24, 2009 | Dryers

1 Answer

Blown thermal fuse on Kenmore dryer

I need the serial# to assist you better.

Thank you for trust

May 14, 2009 | Dryers

1 Answer

Kenmore dryer no heat

check the thermal fuse to see if it's open which means blown(no continuity through it). check to see if heat element is broken somewhere. And if thermal fuse is blown then you'll also have to replace the thermostat switch and the high limit thermostat switch(located close to heat element).

Apr 05, 2009 | Dryers

1 Answer

Kenmore Dryer not heating

thermal fuse is blowing due to improper ventilation.their is a clog somewhere from dryer to where dryer vents outside.thermal fuse is located at top of your elemnt will replace the thermal fuse and your high limit fuse at the bottom of the elemnt cage.but have your venting checked or swept out.

Mar 09, 2009 | Dryers

1 Answer

Thermal fuse has blown 2 times

Check for a bad ground wire. Also while you are check the ground check all the other wires to make sure that they are seated properly and nothing has come lose or te wire plastic has come off or rubbed off and grounding itself out

Feb 21, 2009 | Dishwashers

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

Dec 13, 2008 | Whirlpool GEW9250 Electric Dryer

3 Answers

Thermal fuse for Whirlpool Quiet Partner II

while it is possible that something could be drawing too much current, it is not likely to cause the "thermal" fuse to blow. what i would like to know is, did you use the wiring kit made by whirlpool to replace the wiring? if not then you probably arent getting a good enough connection on the thermal fuse itself.
what causes a thermal fuse to fail is ... get this... too much heat. so a loose connection is the most likely cause. check with your parts house and see if they can find the right repair kit that comes with a wiring replacement with the thermal fuse.

Sep 03, 2007 | Kenmore 24 in. 16222 Built-in Dishwasher

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