DIY Tips for Your Dryer Problems. At All Austin Repairs
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Clothes Dryer Thermal Fuse Keeps Failing.

One of our technicians who works at the same company had this dryer that he could not fix, and I had to have a look as a second opinion to help him out. His problem was a clothes dryer thermal fuse, which kept shorting. He has already replaced the clothes dryer thermal fuse like five times, and he also replaced the timer. We checked the exhaust duct, and it was completely clean of dust. The exhaust duct was very short in length as well. He even told the customer to use a lower temperature setting while using the dryer, and even in the lowest temperature setting, the dryer thermal duse kept shorting.

The customer was very frustrated, and as a technician, I prefer to avoid dealing with such customers. But let’s get to the technical details of why the clothes dryer’s thermal fuse keeps failing and get to the bottom of such a strange issue. First, let’s understand the role of the thermal fuse and what parts can cause it to short.

Failed Cycling Thermostat

The cycling thermostat is located near the heating element. It controls the inner temperature of the dryer by allowing electric current to flow to the heating element. When the temperature reaches the desired setting, the cycling thermostat cuts off the electrical flow to the heating element. If checked with an electric multimeter, the cycling thermostat must show continuity. If the cycling thermostat fails to control the inner dryer temperature, the dryer thermal fuse will short in order to prevent further damage to the dryer.

The clothes dryer thermal fuse could fail due to a faulty cycling thermostat.
Clothes Dryer Thermal Fuse Keeps Failing. 5

Blocked Exhaust Duct

The blower wheel inside the dryer pulls air in through the heating element and pushes it out through the exhaust duct. Now imagine that heated air is trying to escape, but a blocked exhaust duct prevents it from leaving the dryer. This situation could cause the temperature to increase and the dryer thermal fuse to short out. Make sure the dryer is not pushed back too much, and the exhaust duct is not kinked. Also, make sure the exhaust duct is clean; you need to pull out the dryer and check the inner part of the exhaust duct.

Make sure the same amount of air that is leaving the dryer also leaves the other side of the exhaust duct. The other side of the exhaust duct is located on the roof or a side wall outside the house.

Checking Filter Screen For A Blockage

The filter screen must be cleaned of lint before each use. Too much lint will block the airflow, and without airflow, the dryer’s thermal fuse will short out. Even a small amount of lint in the filter screen can affect the amount of air getting inside the dryer. With domestic animals, cleaning filter lint screens should be a must-do before each dryer use.

Checking Washing machines spin cycle

Check if the washing machine spins at the highest speed. The washing machine with the drain problems will not spin out the water from the laundry. Loading your dryer with soaking laundry is not a good idea. As a technician, I have often witnessed customers not paying attention and loading a wet, soaky cloth into a dryer. On the other hand, the washing machine needs regular maintenance of cleaning the drain pump filter clean on a regular basis.

A blocked drain filter screen will stop the washer from draining out, and the washing machine detects the excessive water inside and will not go to a higher spin speed due to safety.

Is it safe to replace dryer thermal fuse?

The clothes dryer thermal fuse is located in different places depending on the model and brand of the dryer. Some thermal fuses are located in the back part of the dryer, and others are located near the heating element or the assembly blower wheel. But to replace any of them or even diagnose by yourself, make sure the dryer is disconnected from the electric power supply.

The second most important safety tip is to use gloves. All the dryers have a sharp internal piece, which could cause severe damage by cutting your hand if mishandled.
On the technical side of self-diagnosing the dryer, you need an electric tester/meter to check the outlet for 120V (gas dryer) or 240V (electric dryer). An electric tester must be used to check the continuity of the cycling thermostat or even the continuity of the dryer thermal fuse. Visually, nobody can determine if the fuse is good or bad.

You can always research a local dryer repair service in your area and have a diagnostics done in order to know whats the issue. We have a recommendation of a few appliance repair services in the Austin area that can repair and fix dryers from any brand, including providing Samsung dryer repair. There are a few abnormal fuse-related repairs which we link a video to check if the thermal dryer fuse keeps getting shorted even after you replaced all the parts.

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