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Thermal cut-off fuse keeps blowing
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Model: 110.86980100 Brand: Kenmore Age: More than 10 years
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rpaul111  
#1 Posted : Sunday, January 21, 2018 3:14:57 PM(UTC)
rpaul111

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I replaced the Dryer thermal cut-off fuse & Dryer high-limit thermostat
I vacuumed out all the lint. Exhaust tube is clear
Dryer worked 1 time
then the thermal cut-off fuse blew again

No lint anywhere
The exhaust is clear

the Dryer high-limit thermostat, Dryer thermal fuse & Dryer operating thermostat all have resistance

the Heater Element shows 13.8 ohms. Is this my issue?
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thorning  
#2 Posted : Tuesday, January 23, 2018 5:54:10 AM(UTC)
thorning

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Check to make sure the blower wheel is turning properly. Sometimes they come loose on the shaft and the motor turns OK but the wheel may not be turning. This does not provide proper flow and the dryer will overheat causing the thermal fuse to blow.
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ThatGuy  
#3 Posted : Tuesday, January 23, 2018 11:23:34 AM(UTC)
ThatGuy

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While it is possible for this type of blower to go bad, its much more likely there is an air restriction in the vent or in the filter area.

It could also be a shorted element, check for shorts to ground and places where the element could touch the shell.

It could be your operating thermostat is shorting inside and that would allow the temperature to get to high. But that usually blows the thermal fuse located next to it.
ThatGuy attached the following image(s):
blower.jpg
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Robertboyer  
#4 Posted : Thursday, February 6, 2020 4:36:22 AM(UTC)
Robertboyer

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Once the rating (pressure limit) of the fuse is exceeded, it simply bursts under the excess pressure caused by the fault condition and disconnects the circuit from the incoming supply. A very short answer: the electrical current is responsible for blowing fuses. Click here for any kind of home repair appliance
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Thermal Cut-off Fuse Keeps Blowing (Dryer Repair)
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