mple devices called flame sensors are used to ensure that the gas valve only opens whenever there’s a fire stopping potentially hazardous gas accumulation. Most often, a furnace’s flame sensor problem is the abrupt closing of the furnace once it’s been turned off. The process can repeat several times before the furnace shuts off completely. Fortunately, homes frequently have issues with the flame sensor, and they usually don’t require expensive furnace repair.

The problem might be resolved with a simple cleaning. The user should identify the sensor within the furnace assembly and turn off the electric power to the furnace prior to taking any other action. It is a short rod of metal that is bent, and placed in front of the flame stream of the burner. The sensor may then be removed using a wrench, or driver once placed. The accumulation of carbon deposits around the sensor’s flame can be carefully removed by applying sandpaper to it, steel wool, or even a dollar bill. After cleansing, the rod could be dried using either a paper towel or cloth. gwrcc83g9w.