How To Clean Your Furnace Flame Sensor

Remove this using the screwdriver.

How to clean your furnace flame sensor.

First turn off the furnace and then use the screwdriver to open the furnace door. Ideally you want to call a professional hvac cleaner to clean your flame sensor. How a furnace flame sensor works. This is an eas.

To do that you can follow these same instructions except that no sanding is involved. Replacing a broken flame sensor. If cleaning your flame sensor did not work it s possible that the sensor is broken and that the furnace is operating as it should. Just clean the flame sensor and your furnace will stay on.

The sensor is a short length of thin metallic rod that creates a small current of electricity in order to confirm there is fire burning within the furnace. You may need to replace the sensor in which case you can follow these same instructions with the exception that no sanding is involved. The flame sensor is a thin metallic rod attached with a single screw below the burner. If cleaning your flame sensor did not work it s possible that the sensor is broken not dirty.

A furnace flame sensor works by detecting the presence of a flame within the furnace. Just remove the old sensor and replace it with a new functioning sensor. You may need to replace it. Step 1 remove the flame sensor.

The furnace door can be opened easily and once opened you can access the internal part of the furnace. If your furnace seems to shut down on its own and no longer works as efficiently chances are your flame sensor needs to be cleaned.