How to Install a Thermal Cut-off Fuse Kit in a Gas Dryer
This dryer repair guide explains how to replace the thermal cut-off fuse in an 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 didn't shut off the dryer when the heating element began overheating. You can't reset the 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 kit.
If you have an electric dryer, see the repair guide How to Install a Thermal Cut-off Fuse Kit in an Electric Dryer
Less than 30 min.
Before you begin
Wear work gloves to protect your hands.
Warning: Undertaking repairs to appliances can be hazardous. Use the proper tools and safety equipment noted in the guide and follow all instructions. Do not proceed until you are confident that you understand all of the steps and are capable of completing the repair. Some repairs should only be performed by a qualified technician.
Step 1: Shut off the power and gas supply
Unplug the dryer to disconnect electrical power. Shut off the gas supply to the dryer.
Step 2: Remove the back panel
Move the dryer forward and use a 1/4" nut driver to remove the screws from the back panel. Remove the back panel from the dryer and set it aside.
Tip: While you have the back of the cabinet open, vacuum lint and dust from the cabinet.
Step 3: 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.
Step 4: 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.
Step 5: 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.
Tip: While you have the back panel off vacuum dust from inside the dryer.
Step 6: 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.
Step 7: Restore power and the gas supply
Plug the dryer into the wall outlet. Turn on the gas supply to the dryer.