How do I know if my thermal fuse is blown?

Multimeter Test

Remove the two wire leads from the thermal fuse and touch a multitester probe to each wire terminal on the fuse. If you get a reading of infinity, the fuse is fine. Any reading less than infinity indicates a triggered thermal fuse you will need to replace.

Can a thermal fuse be bypassed?

Locate and Bypass the Fuse

The thermal fuse will look like a thin strip of white plastic with a wire coming out of each end. In order to bypass the thermal fuse, use electrical tape to tape the two ends together. The thermal fuse will then be bypassed.

What causes a thermal fuse to fail?

A thermal fuse will blow when the temperature gets too high, not when it’s drawing too much current. When it blows, the dryer stops generating heat. It’s necessary to replace it before the dryer will run again.

How do you fix a thermal fuse?


  1. Shut off the power. Unplug the dryer to disconnect electrical power.
  2. Remove the back panel. Move the dryer forward and use a 1/4-inch nut driver to remove the screws from the back panel.
  3. Remove the fuse.
  4. Install the new thermal fuse.
  5. Reattach the back panel.
  6. Plug in the dryer.
  7. Clean the exhaust vent.

Will a dryer still run if the thermal fuse is blown?

Will the dryer run if the thermal fuse is blown? Unlike a thermostat that can reset itself, once a dryer thermal fuse blows, it will need to be replaced with a new one before the dryer will run.

How do I reset my thermal fuse?

Reset Dryer Thermal Fuse / Switch (Dryer won’t heat fix)

How many amps is a thermal fuse?

Providing reliable back-up protection for temperature controlling thermostats and other over-temperature conditions, the G4 series MICROTEMP thermal fuse is the industry standard for over-temperature protection. The G4 is rated for continuous operating currents up to 10 amps @ 250VAC.

Can I solder a thermal fuse?

I did not have any thermal fuses with long leads that would insulate them during soldering, but with some care it is in fact possible to solder a thermal fuse. Here are the tricks I used in my third attempt: Do not shorten the leads of the fuse. Leave them as long as they are.

How do you tell if a thermal fuse is blown without a multimeter?

If you do not have a multimeter, you can also test whether or not the fuse is working by bypassing the fuse itself. Simply detach the wires from the fuse, wire them together using a jumper wire and attempt to operate the dryer.

Does a thermal fuse have polarity?

Short: No. Thermal fuses are not polarised.

What is the difference between fuse and thermal fuse?

Unlike electrical fuses or circuit breakers, thermal fuses only react to excessive temperature and not to excessive current (unless the excessive current is sufficient to cause the thermal fuse itself to heat up to the trigger temperature).

Can normal fuse replace thermal fuse?

While a traditional fuse will reset itself, a thermal fuse does not reset and it must immediately be replaced. The same is true if a thermal switch fails. It is not designed to reset itself like other fuse types.

Do all dryers have a thermal fuse?

The thermal fuse in your dryer is important for the safe running of your machine. Since the 1980’s, all dryers have had them. In fact, thermal fuses can be found in many modern appliances. The role of the thermal fuse is to prevent fires, by detecting when the dryer drum is overheating, and tripping in response.

Where is the thermal fuse located?

The thermal fuse will be located somewhere by the exhaust vent on your dryer. You will be able to visually identify it by the two wires connecting to it. Removing the front of the dryer and removing the drum might be easier to access the fuse’s location.

How do you hook up a thermal fuse?

How to Replace Thermal Fuses: Repair Tips from the Fixit Clinic

What happens if you bypass a thermal fuse?

You can bypass a thermal fuse on your dryer; however, it is something that I don’t advise. You’ll only be putting your dryer at a high risk of devastating damages like fire outbreaks, which could further affect your entire home. If you have a blown thermal fuse, replace it as soon as possible!

What does a thermal cut out do?

The thermal cut out is a safety feature that’s designed to protect your oven by preventing it from overheating. If your oven’s thermal cut out has failed, your oven may no longer heat up or stop working entirely.

Why is my dryer not getting as hot?

Common reasons for an electric or gas dryer not heating are a tripped circuit breaker, clogged vent, and no gas flow. Other potential reasons include a faulty thermal fuse and broken heating element.

Can I replace thermal fuse with wire?

Yes you can, IF the circuit is rated.

How do you test a thermal fuse with a multimeter?

How to check a faulty thermal fuse using a multimeter

Are thermal fuses necessary?

Are thermal fuses necessary? Especially in the world of domestic appliances, thermal fuses are vital. In any situation where a fault in the device could lead to potential damage, specifically a fire, a thermal fuse can be used to help to prevent a situation like this from occurring.

How do you solder a fuse on a circuit board?

How to Solder a Fuse – DIY How To Solder Tip #1 – TV Board Repair

Are thermal fuses universal?

Thermal fuse WP3392519 shuts off the burner in a gas dryer or the motor in an electric dryer when the dryer overheats. A universal part, widely used in dryers of various brands: Whirlpool, Maytag, Kenmore, Crosley, Amana, Admiral, Estate, Roper, etc. Different from Thermostat, the Fuse is not resettable.

How do you test a thermal fuse in a freezer?

How to Check the Thermal Fuse in Your Refrigerator/Freezer