![]() In furnaces that have an electronic system to ignite burners, a dirty or burned igniter can prevent the burners from igniting. Sometimes furnaces that use a standing pilot light to ignite burners won’t stay lit, or the light goes out completely. Replace your furnace filter roughly every few months. Dirty filters prevent proper airflow which is necessary to ignite the burners. When furnace filters aren’t replaced frequently, they collect dust and other particles. If the issue persists, get professional help. First, make sure the thermostat is set to heat mode. Another possibility is that the thermostat’s connections or sensors are faulty. If it’s not, your furnace won’t ignite the burners. Defective Thermostatįor your furnace to ignite, the thermostat must be set on heat mode. If you smell gas at any point, exit your home and notify your gas company. If the furnace won’t ignite after doing this, call an HVAC professional to check for other potential problems. If the gas line is off, simply turn it back on. Common types of natural gas issues include gas leaks, blocked gas lines, and malfunctioning gas valves. The source of your malfunctioning furnace may be related to gas line issues. Your furnace won’t ignite due to one or more of the following reasons: 1. ![]() Superior Furnace Repair & Replacement Services.
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