Here are the Top Reasons Why a Furnace Blows Fuses
If a furnace's normal operation has led to many blown fuses, homeowners need to act fast and address the cause as soon as possible. While replacing a fuse in the system's panel or resetting the unit's breaker can be a temporary solution, the furnace will keep blowing fuses if the root cause isn't handled. Let's examine some of the reasons why a furnace blows fuses.
Short circuits or wire damage
One potential culprit for blown fuses is in the wiring. If the connection is poor or loose, the furnace will inevitably short circuit. The best way to rule out this as a cause is by scheduling an inspection of the wiring.
Clogged filter
A clean filter is integral to the furnace's efficient functioning. Over time, it can collect debris, dust, and dirt that can clog its blower motor. Due to this clogged motor, fuses can continually blow because they need to work harder to operate. Moreover, since a fuse can't operate correctly, there's also a higher risk of a fire starting.
To avoid fuses that blow due to clogs, make sure to replace the filter frequently. Also, hire reliable technicians to clean the entire unit once a year.
Thermostat wires
If a thermostat is inside a metal frame, the fuses can blow if they touch the metal. Furthermore, that contact can also lead to a high voltage condition that the wiring can't handle.
Consequently, the control board can blow up and prevent the draft inducer from starting. In this situation, the furnace won't work and will remain inoperable until the problem is fixed.
Water leaks
Having leaks in a furnace is fairly common, but it can lead to blown fuses and, eventually, much more severe issues if you ignore the condition. To avoid this scenario, reach out to an air conditioning professional to examine the furnace.
Malfunctioning valve
Failing valves are a problem that occurs in gas-powered furnaces. The primary function of gas valves is to close and open to allow gas to the pilot light, and subsequently, the burner, when necessary. But if they are clogged, the valves may keep excessive amounts of heat inside. As a result, the system overheats, the fuse blows, and a fire may even occur.
Wrong fuse
Another possibility is that the wrong size fuse is being used to manage the heating system's capacity. Installing a fuse that is too small can happen if a non-qualified person has serviced the furnace. To make sure the fuse's size is correct, have an air conditioning expert take a look at the system.
Furnace troubleshooting can be tricky
Many problems can make an electric furnace continually blow fuses. Some of them can even create safety hazards that lead to a dangerous fire. For this reason, hire a professional whenever your furnace blows a fuse. They will return your unit to its fully-functioning and safe condition.
Stud Air Conditioning is a full-service installation, maintenance, and repair HVAC company serving Broward, Miami-Dade, West Palm Beach, and Port St. Lucie counties. Call us when you need help with your heating or cooling needs at (954)324-2905. We can help!
