Thermal fuses are installed on the dryer s exhaust duct.
Dryer thermal cutoff fuse.
The fuse controls the dryer s heating element whereas the cutoff controls the motor.
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If the dryer drum is spinning but is not producing heat the thermal cutoff.
Once it trips it has to be replaced.
In addition the dryer may have a thermometer and temperature control or a simple thermostat.
A dryer s thermal cutoff switch controls the dryer s temperature and it also monitors the amount of heat it produces.
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If a thermal disconnect occurs it keeps your dryer from catching fire but it also means that your dryer will not heat the air inside the drum the next time you use it.
All dryers have a high limit safety thermostat that cuts power to the element at a lower temperature than the thermal fuse burnout temperature.
The 279973 dryer thermal cut off fuse acts as a safety mechanism that keeps the dryer from overheating and the fuse is like a backup system it s set to trip at a higher temperature than the thermostat.
The thermal fuse is a safety feature against overheating and will often blow if lint buildup in the trap or the dryer hose prevents proper air flow.
Ensure to shut off electrical power to the dryer before attempting.
The thermal cutoff isn t the same as a thermal fuse.
Checking the fuse is easy if you own a multimeter or ohmmeter.
Fixes the following symptoms.
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No heat or not enough heat.
Thermal fuses and thermal cutoff switches help ensure that major appliances such as your dryer do not overheat.
Thermal fuses burn out to prevent fires.
