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You probably have a thermostat that has locked in the closed position that is allowing it to continue to heat. I would suggest replacing the high limit and the cycling thermostat. Might not be a bad idea since you would be in there to just replace all of the thermostats, most dryers have three or four.
The thermal fuse should only be replaced if the dryer will not start If it starts the thermal fuse is good. If you touched the ignitor with your fingers it may have blown out. Open the dryer and check for voltage to the ignitor through the ignitor wires while the dryer is on. If you have no voltage check the hi-limit thermostat for continuity as well as the operating thermostat. Check the flame sensor for continuity while it is cold. If you have power to the ignitor place a clamp on amp meter on one ignitor wire and turn the dryer on. If you read 3 amps or less the ignitor is bad. If it reads the amps or more the gas valve coils are bad.
a dryer heating element burns out, but doesn't trip the circuit breaker
or blow a fuse. The heating element is simply a long coil of special
wire. You can check it for continuity with an ohm meter. No continuity
means the element is bad and you need to replace it--electric heating
elements aren't repairable.Thermal fuseOn
many dryers, there's a thermal fuse mounted to the exhaust duct inside
the back cover panel. The fuse--which is about an inch long--is usually
embedded in black resin and mounted in a white plastic housing. If the
fuse has blown, you need to replace it. (You can't re-set it.)
It sounds like the thermal fuse or heating element are defective. Both components are easily checked with an ohm meter or multimeter. The fuse is usually inside the back of the dryer by the exhaust duct. Both components should have continuity, if not they need to be replaced. Sure hope this helped.
Hi. thanks for the question. there is a fuse in the back of the dryer. remove the back panel. clean all lint . in the back, after you removed the back panel on the air duct . you will see a small plastic piece with 2 blue wires . replace that part. its called a thermal fuse. thanks the appliance doc
it could be a bad limit switch (metal thermostat) that turns the heat off when getting too hot. if the heat continues too much it will burn out a "fuse" in the back of the machine and it will not turn back on. so if you replace the "fuse" then make sure you replace the limit switches too or the "fuse" will burn out again.