Reasons Your Furnace Fuses Are Failing

A blown fuse is one of the main reasons your electric furnace may be malfunctioning. By learning how to identify a blown fuse, and what causes them to blow, you'll learn how to keep your furnace running efficiently. 

How To Identify A Blown Fuse

Locate the fuse on the circuit board after making sure the power is turned off. Remove the fuse and examine it. Any space in the wire or brown smearing on the fuse indicates it's blown and needs to be replaced. When you replace the fuse you must replace it with the same wattage fuse. If you don't replace it with the correct fuse, your furnace won't work. However, even after you replace the fuse, it's important to rule out any potential issues that caused the fuse to blow in the first place.

A Clogged Filter

Believe it or not, your furnace filter has a big say in the overall health of your furnace. When it becomes clogged, not only does it affect furnace efficiency, but it also increases the amount of power required by your furnace. If your filter becomes too clogged, it can draw so much electricity that it blows your furnace fuse. To prevent this, change your filters regularly. To fix this issue, you'll have to replace the filters and the fuse.

Faulty Thermostat 

A faulty thermostat is another common culprit of a blown furnace fuse. Some thermostats have metal components. If these components are touched by an exposed wire, they can short out your fuse. A faulty thermostat sensor can also cause a blown fuse. If your thermostat can't read the temperature accurately, it will also pull too much power and damage your fuses.

Your Blower Motor Is Out

Your blower motor can actually cause your fuses to fail. As the motor begins to fail, it draws more and more power. This places a significant amount of strain on the fuse and causes it to fail.

Fuses Are A Symptom

Fuses aren't always the only problem keeping your furnace from working properly. Blown fuses are often a symptom that a component of your furnace is drawing too much power. This can be caused by loose or damaged wiring or even water leaks.

If your fuses have failed, or you're having trouble diagnosing your furnace issues, reach out to a furnace specialist today. A furnace contractor will be able to diagnose and repair your furnace issues and make recommendations to keep your furnace running smoothly.

Contact a local HVAC service, such as Intermountain Plumbing & Mechanical, to learn more.