How To Clean Your Furnace Flame Sensor

Just remove the old sensor and replace it with a new functioning sensor.

How to clean your furnace flame sensor.

First turn off the furnace and then use the screwdriver to open the furnace door. The furnace door can be opened easily and once opened you can access the internal part of the furnace. Remove this using the screwdriver. If cleaning your flame sensor did not work it s possible that the sensor is broken not dirty.

Step 1 remove the flame sensor. To do that you can follow these same instructions except that no sanding is involved. If your gas furnace in not staying on the problem is usually a dirty flame sensor. You may need to replace it.

A furnace flame sensor works by detecting the presence of a flame within the furnace. Just remove one sensor and replace it with a new 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. You may need to replace the sensor in which case you can follow these same instructions with the exception that no sanding is involved.

This is an eas. The flame sensor is a thin metallic rod attached with a single screw below the burner. Ideally you want to call a professional hvac cleaner to clean your flame sensor. The flame sensor is one of the most delicate parts of the furnace and has to be handled with care.

How a furnace flame sensor works. Just clean the flame sensor and your furnace will stay on.