Clean Furnace Ignitor Flame Sensor

Sometimes when the furnace starts a new cycle the ignitor will glow but then go out.

Clean furnace ignitor flame sensor.

The igniter will be attached to some electrical wires that are easily unplugged. I saw online that cleaning the flame sensor might work. Using a socket wrench or screwdriver depending on how it is attached remove the panel from the side of the furnace and locate the hot surface igniter. Then it will glow again about 15 seconds later and the flame will ignite.

Once you have removed the sensor gently rub the metal rod only with soft steel wool or soft scotch brie type pad never use sandpaper as it will damage the flame rod. The furnace door can be opened easily and once opened you can access the internal part of the furnace. A socket wrench or screwdriver will be needed again to remove the igniter itself. It s a thin metallic rod in front of the flame inside the unit used to detect a flame.

Furnace flame sensor replacement. The only thing is could the flame sensor be installed on the igniter and gas bracket as the only other white wire that goes to the bracket is a u shaped connector. Hold the can upright 12 inches from the ceramic ignitor. To repair your furnace s flame sensor expect to spend 75 to 250.

Hi i won t be able to do it today as my son has hockey and the furnace seems to be working ok. Step 1 remove the flame sensor first turn off the furnace and then use the screwdriver to open the furnace door. It did but not totally. Insert the straw taped to the side of the can of compressed air into the nozzle of the can.

The ignitor would glow but i get no flame. This doesn t happen every time. Cleaning this component as part of a yearly cleaning and tune up is critical to avoiding costly. If it doesn t detect any flame it turns the gas off.

The flame sensor is a thin metallic rod attached with a single screw below the burner. Tap the release button on the can to send a few short bursts of air onto the ignitor to clean away any dust.