Top Causes of Furnace Ignition Failure

If your furnace ever experiences an ignition failure, it shouldn’t take you very long to realize that something is wrong. Your heating system will stop working, causing the temperature in your home to nosedive. This isn’t ideal in South Carolina, where outdoor temperatures often fall into the 30s and 40s during winter.

Call Eastergard HVAC, one of the leading HVAC services in Dunean, SC, immediately to fix furnace ignition problems. We will perform the appropriate troubleshooting and pinpoint the cause before making the necessary repairs, enabling you to begin heating your home again.

Make sure you understand the top causes of furnace ignition failure, too, since this could help you avoid the issue in the future. Learn about them below.

The Ignition System Isn’t Working Properly

Your furnace’s ignition system contains several key components that must all work together to get your home’s heating system up and running, including the:

• Igniter
• Burners
• Flame sensor

If just one of these components stops doing its job, it will usually lead to ignition failure in your furnace in Dunean, SC. These are some of the problems you might encounter:

• A dirty or damaged igniter might not be capable of sparking the gas necessary to run the furnace.
• Dirt, grime, rust, and more may build up on burners, limiting gas flow and oxygen supply and causing ignition issues.
• A faulty flame sensor might fail to sense a flame in a furnace and shut off its gas supply.

Furnaces will not work correctly unless their ignition systems are operational. To prevent residential heating issues, ensure yours is well maintained.

It Isn’t Getting Access to Enough Gas

If you have an electric furnace, you won’t need to worry about a lack of gas leading to an ignition failure in your furnace in Dunean, SC. This will, however, be a cause for concern if you rely on a gas furnace ignition.

Your heating system must have access to the gas its ignition system needs. Here are a few reasons it may not be receiving enough:

• A damaged supply line cannot deliver enough natural gas.
• A faulty valve is stopping enough gas from flowing.
• The ignition system is suffering from insufficient gas pressure.

Do not try to turn your furnace on if you suspect it isn’t getting enough gas. Instead, leave the diagnostics to a trusted HVAC repair company.

It’s Experiencing Electrical Problems

Electrical problems are another common cause of ignition failure in your furnace in Dunean, SC. Something as simple as a tripped circuit breaker caused by a power surge could leave your heating system out in the cold, stopping it from keeping your home warm.

Faulty electrical wiring within your furnace could also be to blame for a heating system malfunction related to its ignition. Keep your unit offline, and call an HVAC company to step in and pinpoint electrical problems.

It’s Encountering Airflow and Ventilation Issues

Have you gotten into the habit of replacing your furnace filter every three months? If you routinely keep a filter in your heating system for longer than this, it may get clogged with dirt, dust, and other debris.

A dirty air filter will negatively impact your home’s indoor air quality and put your furnace at risk. It could restrict airflow within your heating system, resulting in an overheating unit.

Blocked ducts and vents might also cause your furnace in Dunean, SC, to fail to ignite.

How To Fix an Ignition Failure in Your Furnace in Dunean, SC

Do you need to fix an ignition failure in your furnace? If so, there are several steps you can take to try to remedy the situation.

For example, you can:

• Replace your dirty air filter with a fresh one.
• Reset the circuit breaker for your furnace.
• See that your thermostat is set to the correct temperature.

You can also enlist the services of a reputable furnace repair company like Eastergard HVAC to ensure you address the cause, not just the symptoms.