There are multiple fuses in your furnace. These fuses provide a number of critical functions. Because there are so many of them, and they’re always working to guarantee that your furnace functions properly, a blown fuse is unavoidable. This isn’t really a serious problem unless it begins to occur on a regular basis. If your fuses are constantly blowing, this could be a sign that your HVAC system has a significant problem.
Air Products & Services, a commercial and residential AC provider, wants you to understand why your furnace might be blowing fuses. Here are some possible causes:
Possible Reasons a Furnace Keeps Blowing Fuses
- Dirt and dust. Cleaning your furnace filters is part of routine home maintenance. Dust and dirt from the filters can enter the blower motor over time. This can cause the motor to overheat and fail, blow a fuse and shut down the furnace.
- Water leaks. It’s not unheard of for water from a humidifier to get into your furnace. Water leaks can damage your unit if not addressed immediately. Having a professional fix any leaks will prevent future damage to the furnace.
- Loose wires. The natural vibrations of an operating furnace can loosen wires. A slack wire can short out, blowing the fuse. Since finding and replacing a loose wire can be tricky, it’s best to call in air conditioner and furnace installation experts. It’s also important to inspect the furnace regularly.
- Faulty or worn parts. As a result of regular use and the passage of time, portions of the furnace may become faulty.
- Failing valves. If your gas furnace’s fuses continue blowing, examine the safety valve. It must be able to open and close. If the valve is clogged, it may be retaining or releasing too much heat. This could spark a fire if the furnace overheats.
- The wrong fuse. It’s possible that the furnace’s fuses aren’t installed correctly and are causing the fuse to blow. The experts at Air Products & Services can diagnose this problem and replace the fuse with one that’s the proper size.
- A malfunctioning thermostat wire. A thermostat wire touching the furnace’s metal frame can result in a blown fuse. The metal frame can deliver higher voltage than the wires can manage. This will blow a fuse. When this happens, the furnace will stop working.
Since 1979, Air Products & Services has been offering exceptional HVAC services. Heating and air conditioning installation, replacements, repairs, residential and commercial AC maintenance and more are among the services we provide.
You can reach us by calling (818) 875-7231 or filling out our contact form. We offer free, no-obligation consultations, and we’re available to serve customers in Tarzana, CA, and the surrounding areas.