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Dryer keeps burning out thermal fuse and thermostats

My dryer recently quit working, so I brought out the repair manual and started troubleshooting. I found that the thermal fuse and one of the operating thermostats had gone bad. I replaced them both and it worked for about a day. I have retested the and the same parts are bad again. Could it be something wrong with the heating elements?

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  • jlharrell Dec 11, 2008

    All connections are tight. Appreciate the reply. Any other suggestions or paths I should try?

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If the thermal fuse and thermostat are bad,something is causing them to overhea,t before tackling the heating element, you should check all connections to the stat and fuse as a loose connexion could be the cause of the over heating.

Posted on Dec 11, 2008

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Hello there and welcome to fixya there are several things that could make this dryer not heat up
Here are the most common things

Thermal Fuse

If the dryer doesn\'t heat, but the drum
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Gas Valve Solenoid

The gas valve has two or more electric
solenoids which open the valve to let the gas flow into the burner
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Dryer Igniter


If the dryer doesn\'t heat, the igniter might
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Heating Element

The heating element on an electric dryer can
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Heating Element Assembly

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Flame Sensor



Gas dryers have a flame sensor to detect the
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High Limit Thermostat


Although not common, if the dryer doesn\'t
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Cycling Thermostat




The cycling thermostat regulates the
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Main Control Board

The main control board is normally not at
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If the lightbulb burns out in a whirlpool duet gew9250pw1 dryer will that cause it to quit working


Generally, a burnt-out bulb will not stop the dryer from working. However, the bulb may have failed due to a power surge. In that case, you'll have to check the components that could have also been damaged.
First, check that the circuit breakers are on. (There may be two breakers for an electric dryer.) Next, is the drum turning or does the unit not start. If the control board buttons aren't responding, the electronic control is likely bad or the wiring harness has an issue. If you aren't getting heat, you need to check the thermal fuse (thermal cut-offs), wiring, thermostat (high temp limit) and element. A multi-meter will tell you if the fuses have the appropriate resistance (10-30 Ohms).

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(note: if you recently had a nearby lightning strike and other electric appliances were damaged, check if your insurance will cover the costs of repair after you meet your deductible.)

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Hi Warren Fink
Try this solution to your problem

A vent clogged with lint can cause the dryer to overheat.
Right after replacing a dryer element, always run the dryer on air fluff/no heat, and go outside to verify there's plenty of air coming out your vent system.
If the vent's clogged, that new element can burn out very quickly.
Please take time to rate me
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This is a problem commonly caused by a blown thermal fuse due to a faulty thermistor or cycling thermostat depending on the model of the dryer. The thermal fuse is located on the blower housing and wired in series with the motor. The motor cannot therefore run when the thermal fuse blows open and no dryer functions works.

Unplug the dryer then remove the bottom panel and the lint duct and check continuity of the thermal fuse. You can also bypass the thermal fuse for troubleshooting purposes. Check for blocked lint filter and restricted vent system if the thermal fuse is indeed blown then replace it including the thermistor/cycling thermostat. Click on the link below for detailed troubleshooting of this common problem.

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