Dryer thermal fuse located on the blower housing. If the dryer overheats, the thermal fuse blows cutting off power to the motor or the heating system. When the fuse is bad the dryer won't start or will run but not heat. The thermal fuse cannot be reset. Fuses often blow due to a clogged dryer vent.
Dryer heating element. If your dryer does not heat first check for a blown thermal fuse on the blower housing before replacing the heating element. In most cases the heating element will have a break in the element if defective. *May need wire connector to install heating element.
Dryer heating element thermal cut-off (thermal fuse) 309 degrees and high limit thermostat 250 degrees, with wiring kit. If the dryer does not heat the thermal cut off may have blown and a new high limit thermostat is needed.
Dryer cycling thermostat with internal bias heater, L155-25. If the dryer won't heat, it is unlikely that this thermostat is causing the issue, as the thermal fuse or thermal cut-out normally fail first.
Dryer high-limit thermostat, L250-80, with terminal extension arm. This thermostat should be closed for continuity at room temperature and opens at around 250 degrees Fahrenheit. If the dryer won't heat, the high-limit thermostat might be defective.