How To Clean Furnace Sensor

If the filter is dirty replace it or clean it with soap and water if it s not disposable.

How to clean furnace sensor.

Step 1 turn off the power. The furnace door can be opened easily and once opened you can access the internal part of the furnace. First you will need a 1 4 inch hex screwdriver or even a wrench. 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 remove one sensor and replace it with a new sensor. The flame sensor is a thin metallic rod attached with a single screw below the burner. Keeping the sensor clean is simple and requires just a few tools when you follow these easy steps. Step 2 clean the sensor.

Shut off the power. This is a safety mechanism. The rheem manufacturing company produces a line of water heaters air conditioners and furnaces for both homes and businesses. 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.

Before you start working on the furnace you need to cut the power. The sensor might have dirt and soot deposits on its body and it might have turned greenish. A burner with no flame may release gas into the air. If the flame sensor can t sense the flame because it s too dirty the furnace may shut itself off.

How to clean a furnace flame sensor. If your furnace flame sensor has become dirty with build up the furnace won t function properly. Remove this using the screwdriver. Get a small piece of sandpaper emery cloth or even steel wool as well as several pieces of clean paper towels.

However the furnace still shuts off after only a few seconds of the burners operating. I tried both cleaning my furnace s flame sensor and later installing a new flame sensor. When the sensor becomes blocked with debris the heater will not work properly. A flame sensor detects heat coming from the burners.

You may need to replace the sensor in which case you can follow these same instructions with the exception that no sanding is involved.