Step 4 reattach.
How to clean up furnace sensor.
Emery cloth can be found at any hardware supply store and is a much better option.
Step 3 clean.
To avoid danger it is very important to shut off the power to your furnace or any other appliance prior to making.
Gently scrub the sensor surface to remove any build up.
Between the 1st and 2nd burner ports from left to.
Reattach the sensor and turn the furnace back on.
First turn off the furnace and then use the screwdriver to open the furnace door.
You should feel a little resistance at first but after a few minutes the cloth should move freely over the surface of the sensor.
Once you have removed the.
Some fans are held in by screws or bolts.
Step 2 clean the sensor.
Once the sensor has been removed from the furnace all you ll need to do is clean it with your emory cloth.
In the video you can see 4 burner ports.
The furnace door can be opened easily and once opened you can access the internal part of the furnace.
Find the flame sensor after making sure that the power to the furnace is shut down completely look for the.
You can wrap a small piece of tape around each wire and label it to make reassembly easier just make sure to remove the.
Remove this using the screwdriver.
Many people suggest you use sandpaper.
Clean the flame.
Simply hold the sensor at it the base and rub the emory cloth over the sensor.
While this is acceptable it can damage the sensor.
How to clean a furnace flame sensor step 1.