How to Test and Replace a Blown Thermal Fuse in Your Dryer

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Ever had a dryer that just won’t start, no matter how many times you press the button? Or maybe it runs but never heats up? Chances are, the thermal fuse has blown.

This small but crucial component is a safety feature designed to prevent overheating. When it goes bad, your dryer stops working as a precaution.

Testing and replacing it isn’t rocket science. With a few tools and a little patience, you can get your dryer back in action.

Step 1: Locate the Thermal Fuse

Before doing anything, unplug the dryer. Electrical work and live wires don’t mix. Once it’s safely disconnected, find the thermal fuse. In most dryers, it’s on the blower housing or near the heating element. The exact location depends on the model, so if you’re not sure, check the user manual or look up a diagram online.

Step 2: Remove the Thermal Fuse

To access the fuse, you’ll likely need to remove the back panel or, in some cases, the front panel. A screwdriver should do the trick. Once you see the fuse, disconnect the wires attached to it. Make a note of where they go—it’ll make reassembly easier. The fuse is usually secured with one or two screws, so remove those as well.

Step 3: Test the Fuse

Now, let’s see if the thermal fuse is actually the problem. Grab a multimeter and set it to the continuity or ohms setting. Touch the two probes to the fuse terminals. If the multimeter beeps or shows a reading, the fuse is still good. If there’s no response, it’s blown and needs to be replaced.

A blown fuse usually means the dryer overheated. Before you swap it out, figure out why it failed. Clogged vents and lint buildup are common culprits. If you don’t fix the underlying issue, the new fuse will likely blow again.

Step 4: Install the New Thermal Fuse

If the fuse is bad, replace it with an identical one. It has to match the dryer’s specifications—don’t try to substitute it with a different type. Secure the new fuse in place, reconnect the wires, and reattach any panels you removed.

Step 5: Test the Dryer

Before putting everything back together, do a quick test. Plug the dryer back in and turn it on. If it starts and heats up properly, you’re good to go. If not, there might be another issue at play. A faulty heating element, bad thermostat, or wiring problem could also be to blame.

Preventing Future Fuse Problems

One thing you should know: A blown thermal fuse a warning sign. Dryers overheat for a reason, and ignoring the problem can lead to bigger issues (or even a fire hazard). Regularly clean the lint trap, check the exhaust vent for blockages, and avoid overloading the dryer. These simple habits can extend your dryer’s lifespan and help you avoid future breakdowns.

If you’ve gone through all the steps and your dryer still isn’t cooperating, it might be time to bring in the pros. TC Appliance Repair offers dryer repair services in Austin to save you the frustration of trial and error.

Contact us today and save yourself from bigger headaches down the road!

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