Wall Gas Furnace Pilot Light

A number of reasons can cause the wall furnace to not light including a damaged thermocouple a.

Wall gas furnace pilot light.

A pilot light is a small continuously burning flame that is used to ignite the burners in older gas furnaces. A gas furnace s standing pilot in which the flame is lit at all times is sometimes referred to as a pilot light but no matter what you call it its purpose is to serve as a small ignition flame for the gas burner. If your old gas furnace has a standing pilot you can follow a standard procedure to relight the pilot light. By cecilia harsch when the pilot on your wall furnace does not stay lit your furnace won t heat.

When the thermostat signals for gas to be delivered from the gas valve to the burner it is the standing pilot that ignites the gas flowing to the burners to heat the air in the combustion chamber. The pilot light in your gas furnace supplies heat to your home. The flame is monitored by something called a thermocouple that is designed to shut off the gas valve to the pilot light in the event that it extinguishes or burns inefficiently. Keep the knob in for 20 seconds and then release it and turn it to the on position.