This dryer repair guide explains how to replace the thermal cut-off fuse in a gas dryer. The thermal cut-off fuse is a safety device that shuts down the burner if the dryer severely overheats. The dryer severely overheats if the high-limit thermostat failed to shut off the dryer when the burner began to overheat. You can't reset a blown thermal cut-off fuse—you must replace it, as well as the failed high-limit thermostat. The thermal cut-off fuse kit contains both components, and the step-by-step instructions in this repair guide show you how to replace them in a gas dryer, using a manufacturer-approved replacement part.
Use this procedure to install a thermal cut-off fuse kit in Kenmore, Whirlpool, Maytag, Amana, Roper, Crosley and Estate gas dryers with a lint screen housing located in the top cabinet panel.
If you have an electric dryer, see the repair guide How to Install a Thermal Cut-off Fuse Kit in an Electric Dryer.
This video shows how to isntall a thermal cut-off fuse kt in a gas dryer.
Shut off the power and gas supply
Unplug the dryer to disconnect electrical power. Shut off the gas supply to the dryer.
Remove the back panel
Move the dryer forward and use a 1/4-inch nut driver to remove the screws from the back panel. Remove the back panel from the dryer and set it aside.
Remove the back panel screws.
Remove the back panel from the dryer.
Remove the high-limit thermostat
Label the wires that connect to the high-limit thermostat or take a digital picture so you know how to reconnect them.
Remove the wires from the high-limit thermostat. Remove the mounting screws that hold the high-limit thermostat in place and pull the high-limit thermostat off of the heater box.
Remove the wires from the high-limit thermostat.
Remove the high-limit thermostat mounting screws.
Remove the high-limit thermostat.
Remove the thermal cut-off fuse
Label the wires that connect to the thermal cut-off fuse or take a digital picture so you know how to reconnect them. Remove the wires from the thermal cut-off fuse.
Remove the mounting screw. Pull the thermal fuse off of the heater box and set it aside for disposal.
Remove the wires from the thermal cut-off fuse.
Remove the thermal cut-off fuse mounting screw.
Remove the thermal cut-off fuse.
Replace the high-limit thermostat and thermal cut-off fuse
Mount the high-limit thermostat and the thermal cut-off fuse on the heater box using the mounting screws. Referring to the labels on the wires of the digital picture, properly connect the wires on the thermostat and fuse.
Reattach the back panel
Position the back panel on the back of the dryer. Line up the mounting screw holes. Insert the mounting screws and tighten them firmly.
Restore power and the gas supply
Plug the dryer into the wall outlet. Turn on the gas supply to the dryer.
The heating element in an electric dryer generates the dryer's heat—it's one of the first things to check if the air in the dryer doesn't get warm. If it's damaged, this repair guide will show you how to replace the heating element.
When the air in the dryer overheats—usually because the vent is clogged—the thermal fuse blows, stopping the dryer. You can't reset the fuse; you must replace it.
The thermal cut-off fuse shuts off the heat if the dryer overheats when the high-limit thermostat fails. The thermal cut-off fuse kit includes both parts.
Learn what four things to check if your electric dryer won't start or run.
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