Why Did Your Gas Furnace Suddenly Quit?

If your gas furnace suddenly quits working, you might think it's damaged beyond repair. If your furnace's burners fail to ignite on the first few tries, it can lock up. This is called "lock out." Unless you solve the problem in your furnace, it will continue to lock out. Here's why your furnace stopped working and how you can repair it.

What's Furnace Lock Out?

Most newer or modern gas furnaces use special sensors to keep them safe. When the sensors detect a problem in the furnace, they shut it down. During that time, your home can become exceptionally cold.

Sensors usually look for problems in the furnace's ignition system. The ignition system lights each burner in a special sequence. If the burners don't light up in the right sequence, the sensors tell the furnace to shut down. It often takes several tries before the furnace shuts down.

Sensors can also become active if they sense a problem with your gas supply or line. The gas line might leak odors out into the room, or the odors can seep from the furnace. Any of these scenarios can be very unsafe for you and your family.

Resetting the furnace will only solve the issue temporarily. For safer and more permanent results, have an HVAC technician check your furnace.

How Do You Unlock Your Furnace?

A technician or contractor will generally test the appliance for gas leaks before they do anything else. Although gas is a natural fuel, it still contains dangerous toxins that can cause respiratory illnesses and damage. If a contractor doesn't locate a leak, they'll check the furnace's ignition system and burners.

An HVAC specialist may check the burners or their flame sensors for soot buildup and rust. These problems can disrupt the ignition sequence by blocking the jet openings on the burners. Sometimes, flame sensors simply stop working. The sensors may have problems detecting the presence of gas, which can allow fumes and toxins to build up inside the appliance over time. A contractor can either clean the burners and flame sensors, or they can replace them.

After a technician repairs your furnace, they may ask you to monitor your furnace for future issues. If you notice any changes in your appliances' operations, schedule a follow up appointment immediately.

If you need additional facts about your gas furnace or how to repair it, contact a heating specialist for an appointment. Visit http://www.alwaysreadyrepair.com/ for more information.