Clean the flame.
How to clean up furnace sensor.
How to clean a furnace flame sensor step 1.
Once you have removed the.
Remove this using the screwdriver.
Once the sensor has been removed from the furnace all you ll need to do is clean it with your emory cloth.
You can wrap a small piece of tape around each wire and label it to make reassembly easier just make sure to remove the.
Step 4 reattach.
Reattach the sensor and turn the furnace back on.
The flame sensor is a thin metallic rod attached with a single screw below the burner.
Many people suggest you use sandpaper.
Some fans are held in by screws or bolts.
Emery cloth can be found at any hardware supply store and is a much better option.
Step 3 clean.
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.
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.
Shut off the power it s important to cut the power before disassembling parts of the furnace.
The furnace door can be opened easily and once opened you can access the internal part of the furnace.
Between the 1st and 2nd burner ports from left to.
First turn off the furnace and then use the screwdriver to open the furnace door.
Step 2 clean the sensor.
Find the flame sensor after making sure that the power to the furnace is shut down completely look for the.