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How Do I Know If My Dryer Thermal Fuse Is Blown?

If your dryer is not producing any heat, one of the most common causes could be a blown thermal fuse. This component is designed to prevent overheating and potential fires by triggering the appliance to shut down when it gets too hot.

However, a faulty or damaged thermal fuse can cause your dryer to stop working. So, how do you know if your dryer’s thermal fuse is blown?

In this article, we will explore some of the signs and symptoms that indicate a blown thermal fuse, as well as steps you can take to fix the problem and prevent it from happening in the future. Read on to learn all of these!

Signs That Your Thermal Fuse is Blown

Dryer Thermal Fuse

If your dryer thermal fuse is blown, some signs can indicate the most common cause of the issue:

The thermal fuse stops generating heat

If the thermal fuse is blown, the dryer will not heat up because it acts as a safety device to prevent your dryer from on fire or overheating.

Your clothes dryers stop working suddenly

A blown thermal fuse can cause the dryer to stop working abruptly. This is because it cuts off power to the dryer’s motor when it blows.

The clothes dryer drum is not rotating

In some dryers, a blown thermal fuse can cause the drum to stop rotating. This can happen because the excessive heat fuse is connected to the drum’s motor.

Your dryer is making unusual noises

If the thermal fuse is blown, it can cause the blow dryer to make unusual noises as it tries to operate with a malfunctioning component.

Repair and Testing Steps For Blown Thermal Fuse

testing thermal fuse

Here are some troubleshooting and testing steps to follow if you suspect that your thermal fuse is blown:

Check the power supply

Check if your dryer is getting power by ensuring it is properly plugged in and the circuit breaker is set to the “On” position.

Check for obstruction

Remove any obstruction from the vent system, like lint buildup that could impede airflow.

Check for thermal fuse cut-off

Some dryers have a thermal cutoff switch in addition to the thermal fuse. Test this switch using a multimeter to check the highest temperature and continuity. If there is no continuity, replace the switch.

Test the thermal fuse

Unplug the dryer and locate the thermal fuse. Using a multimeter to check its temperature and continuity, placing the probes on both thermal fuse ends. If the multimeter shows no continuity, the fuse is blown.

Replace the thermal fuse

Replace the fuse with a new one. Install a new fuse with the correct fuse for your dryer model.

Test your dryer

Plug the dryer back in and test it out. If the dryer still won’t start or heat, other issues, such as a faulty heating element or a broken thermostat, could be at play.

Steps in Replacing for New Thermal Fuse

new thermal fuse

If you opt for a replacement instead of sticking to repair your problematic thermal fuse, here are simple steps to follow:

  • Remove the rear panel: Unplug your clothes dryer and locate its rear panel. Remove the screws holding the panel in place and carefully take it off.
  • Take out the thermal fuse: Locate the thermal fuse on the dryer’s heating element housing. Remove its wires by pulling the connectors or using a screwdriver. Then, use a wrench or pliers to take out the thermal fuse.
  • Replace with new thermal fuse: When you install the new thermal fuse, make sure to remove the mounting screw and place it in the same position as the old one. Ensure that it fits snugly by screwing it in tightly.
  • Put the back panel on your clothes dryer: Reattach the back panel by securing it with the screws you removed earlier once you have replaced the thermal fuse. The back panel is usually located at the top of the exhaust duct, about two inches long, with two wires attached.
  • Plug the dryer back in: Ensure the power cord is plugged in securely, and turn on the power supply.
  • Clean out the exhaust duct: Finally, clean out the exhaust duct to ensure proper ventilation and prevent future issues.

Other Possible Dryer Issues To Look Out

If the thermal fuse is not the problem, you may want to check other dryer issues to clearly identify the problem and protect the components of your dryer from further damage.

  • Heating Element
  • Lint Trap
  • Problematic Start Switch
  • Clogged Exhaust Tube
  • Broken Drive Motor

Know When To Call for an Appliance Repair Service

Knowing when to call for an appliance repair service is essential to get the best care for your home appliances. By identifying the signs of malfunctioning appliances and troubleshooting simple issues, you may be able to fix the problem yourself.

However, when more complex problems present themselves, it’s important to seek professional assistance from a qualified technician. Regular maintenance and prompt repairs can extend the lifespan of your appliances and save you money in the long run.

Don’t hesitate to call for help when needed, and take proactive steps to keep your appliances in good condition. With the right care, you can enjoy your appliances’ full benefits for many years.

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