Wall Furnace Pilot Light

Wall furnaces house a pilot light much like a water heater.

Wall furnace pilot light.

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. In this episode of repair and replace vance shows how to relight the pilot light in a standing pilot furnace. If your old gas furnace has a standing pilot you can follow a standard procedure to relight the pilot light. Keep the knob in for 20 seconds and then release it and turn it to the on position.

There are numerous things that may make the pilot light on your furnace to not stay lit. The pilot light is a small flame that is either lit manually and remains burning around the clock or is lit electronically via an igniter when the machine kicks on. In these systems the pilot will only light in the case of hot surface igniters the igniter surface heats when the thermostat makes a command for heat. Turn the gas control to pilot and hold it in while you light the flame with a match or a lighter.

Since they have a pilot light system wall furnaces also can usually be repaired easily if something goes wrong as there are parts that allow for easy service and repair versus total replacement. If your pilot light goes out all you need to. They do require maintenance as well but are much easier to maintain by homeowners. 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.

A number of reasons can cause the wall furnace to not light including a damaged thermocouple a. Standing pilot lights are common in older furnaces but many newer furnaces have intermittent pilot lights or hot surface igniters. If the pilot light will not stay lit it needs to be fixed asap to supply heat to your home and for safety reasons.