How To Clean Furnace Sensor

Remove this using the screwdriver.

How to clean furnace sensor.

However the furnace still shuts off after only a few seconds of the burners operating. If your furnace flame sensor has become dirty with build up the furnace won t function properly. The rheem manufacturing company produces a line of water heaters air conditioners and furnaces for both homes and businesses. Before you start working on the furnace you need to cut the power.

When the sensor becomes blocked with debris the heater will not work properly. However the furnace still shuts off after only a few seconds of the burners operating. To clean a furnace start by turning off the furnace then removing the access panel on the outside of the furnace and inspecting the filter for dirt or damage every 3 4 months. As long as the component senses the flame it sends a message to the main furnace control board telling it to keep the main burner on and the gas valve open.

Get a small piece of sandpaper emery cloth or even steel wool as well as several pieces of clean paper towels. How to clean a furnace flame sensor. 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 furnace door can be opened easily and once opened you can access the internal part of the furnace.

If the flame sensor can t sense the flame because it s too dirty the furnace may shut itself off. Lennox gas furnaces contain an important safety component known as a flame sensor. A burner with no flame may release gas into the air. First you will need a 1 4 inch hex screwdriver or even a wrench.

Just remove one sensor and replace it with a new sensor. This is a safety mechanism. The flame sensor is a thin metallic rod attached with a single screw below the burner. Shut off the power.

Step 1 turn off the power. The sensor might have dirt and soot deposits on its body and it might have turned greenish. Step 2 clean the sensor. A flame sensor detects heat coming from the burners.

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.