High-limit thermostat for dryer. L315-65. If the dryer overheats, this high-limit thermostat will cut off the power to the heating element. If the high-limit thermostat has blown, the dryer won't heat.
Cycling thermostat with bias heater, L210-30F
Mica heater unit
Dryer heating element assembly. If the dryer won't heat, first check the thermal fuse to determine if has blown. If the thermal fuse has not blown, the heating element might be defective. The heating element will often have a break in the coil if it is defective.
High-limit thermostat, L210-30. NOTE: Watch the part testing video to determine if thermostat is defective.
Cycling thermostat, L135-20F