Why Gas Furnace Is Not Working

Or the thermocouple might be faulty causing the gas supply to shut off.

Why gas furnace is not working.

If gas or propane flow to this pilot light is interrupted even for a moment the pilot light can go out and will need to be relit. Browse helpful items on amazon. If it seems like the gas line is not the issue and the gas is flowing to other appliances check to make sure the gas supply to the furnace itself is open and clear. A gas furnace that is frequently cycling from on and off modes is indicative that the furnace has a problem with its thermostat or the air filters may be clogged.

If the gas supply to the furnace is disrupted your furnace could potentially be lacking the amount of fuel necessary to ignite. Blocking air increases the air pressure in your air ducts which may both cause and worsens airflow leaks particularly at joints and seams. The pilot light going out is one of the most common reasons that a gas furnace fails to produce heat. Essentially blocking heating vents causes your furnace to work harder and longer than it is intended to work and can shorten its life.

Faulty thermostats can cause ac and heater issues. With an oil furnace check the fuel supply. When you discover that the blower is not working on the gas furnace you need to contact a professional to replace it for you. This is why your furnace won t turn on.

Fan does not run but furnace still produces heat. On old furnaces the standing pilot light can go out due to a strong draft a dirty orifice in the pilot burner or dirt in the gas tube. With a gas fired furnace be sure the valve on the gas pipe is turned on the lug or handle should be in line with the gas pipe. If you notice that your machine is still giving off heat yet the fan is not running there are several sources you can check.

But as soon as they stop working it s readily apparent. Heat means that there is gas flowing so you can avoid checking the propane again. Your gas or oil burning furnace must receive fuel to work. If your furnace does not have a pilot light move on to the next step.

However even many modern furnaces still run pilot lights. What might have once been caused by a troublesome pilot light from a dirty thermocouple now involves smart systems that auto test combustion air inducers electronic ignition sensors pressure switches and exhaust flow monitoring. What to check if your furnace won t work the problem is that modern gas furnaces are both more efficient and more complicated than those from over a decade ago.