August 1, 2014

How to replace a thermal fuse in an electric dryer

By Lyle Weischwill
How to replace a thermal fuse in an electric dryer

This step-by-step dryer repair guide shows how to replace the thermal fuse on an electric dryer. The thermal fuse is a safety component that trips if the air flowing through the dryer drum overheats. A blocked exhaust vent is the most common reason the air overheats. When the thermal fuse blows in an electric dryer, the display lights still work but the drive motor won't run. You can't reset the thermal fuse; if it's blown, replace it with the manufacturer-approved replacement part.

These steps work for replacing the thermal fuse on Kenmore, Whirlpool, Maytag, Amana, Roper, Crosley and Estate electric dryers with a lint screen housing located in the top cabinet panel.

We also have instructions for replacing the thermal fuse in a gas dryer.

Quick links
Tools required
1/4-inch nut driver
Slot screwdriver
Vacuum cleaner or shop vac
Duct cleaning brush
Work gloves
Repair difficulty
Time required
30 minutes or less
Repair difficulty
Time required
30 minutes or less
Replacing a thermal fuse in an electric dryer

This video explains how to repalce the thermal fuse in an electric dryer.

Instructions

01.

Shut off the power

Unplug the dryer to disconnect electrical power.

02.

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.

Tip: While you have the back of the cabinet open, vacuum lint and dust from the cabinet.
Remove the back panel screws.

Remove the back panel screws.

Remove the back panel from the dryer.

Remove the back panel from the dryer.

03.

Remove the fuse

Pull the wires off of the thermal fuse. Remove the mounting screw using a 1/4" nut driver. Pull the fuse off of the blower housing.

Remove the wires from the thermal fuse.

Remove the wires from the thermal fuse.

Remove the thermal fuse mounting screw.

Remove the thermal fuse mounting screw.

04.

Install the new thermal fuse

Position the new fuse and secure it with the screw. Push the wires onto the connection spades on top of the new thermal fuse. It doesn’t matter which wire goes into which terminal on the thermal fuse.

05.

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.

06.

Plug in the dryer

Plug the dryer into the wall outlet to restore electrical power.

07.

Clean the exhaust vent

To prevent the thermal fuse from blowing again soon, remove the flexible vent in the back of the dryer and clean the inside of the flexible vent hose. Clean the air duct going to the outside of your home with a duct cleaning brush. Vacuum the area to clean up dust. 

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.
Symptoms common to all dryers

Choose a symptom to see related dryer repairs.

Main causes: bad gas valve coils, broken heating element, tripped safety thermostat or fuse, bad operating thermostat, control failure
Main causes: clogged exhaust system, heating system failure, deposits on moisture sensor, control system failure
Main causes: bad drum support roller, damaged idler pulley, broken blower fan blade, worn drum glide bearing, bad drive motor
Main causes: door switch failure, lack of power, broken belt, blown thermal fuse, bad drive motor, control system failure
Main causes: clogged exhaust vent, bad motor relay, loose dryer door catch, bad door switch, control system failure, faulty drive motor
Main causes: lack of electrical power, bad power cord, wiring failure, bad control board, blown thermal fuse, bad door switch
Main causes: bad timer or electronic control board, door switch failure
Main causes: damaged door strike, worn door catch
Repair guides common to all dryers

These step-by-step repair guides will help you safely fix what’s broken on your dryer.

How to replace a heating element in an electric 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.

Repair difficulty
Time required
 30 minutes or less
How to replace a thermal fuse in an electric dryer

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.

Repair difficulty
Time required
 30 minutes or less
How to install a thermal cut-off fuse kit in a gas dryer

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.

Repair difficulty
Time required
 30 minutes or less
Articles and videos common to all dryers

Use the advice and tips in these articles and videos to get the most out of your dryer.

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