thermal cur off fuse, why?


thermal cur off fuse, why?

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paulmars
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Why is it needed? Ive only repaired a few dryers, but this looks like extra part. This dryer has the std High-Limit Thermostat, Operating Thermostat, and Thermal Fuse. However, it also has this Thermal Cut-Off Fuse. This Thermal Cut-Off fuse is located in the heater housing where it feeds the drum and looks more like a thermostat. Its also the most expensive part.

See attached diagram. ( https://imgur.com/a/Q3vVHeP )

#1 Thermal Cut-Off Fuse

#34 High-Limit Thermostat

#42 Operating Thermostat

#59 Thermal Fuse

kenmore 110.96281100

tks,
pa
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I do not see #1 in this diagram 



paulmars
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Admin - 1/25/2020 1:52:01 AM
I do not see #1 in this diagram 

Follow the arrows 
paulmars
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Ive watched several troubleshooting videos for this specific model troubleshooting for no heat. Each video tested the High-Limit Thermostat, Operating Thermostat, Thermal Fuse, heating element. One of the videos tested the timer. None tested or even mentioned the Thermal Cut-Off Fuse.
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I do not see a thermal cutoff in the model listed .. typically thermal cutoff's kill power to the element in the case of over heating  but they are not on all electric dryers.



paulmars
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Before I purchase new cut off, I decided to test the two thermostats:

one is marked L155-25F. it opens at 110°F.

the other L250-80F. it opens at 180°F.

Some sites say that number after the dash is +/- for opening temperature. Other sites say that is how much less the temp needs to be for closing. I dont know which sites are correct.


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