Cleaning the flame sensor with sandpaper can make it more difficult for the component to successfully sense the flame.
Clean flame sensor lennox gas furnace.
Do you plan on doing the work yourself.
After 3 tries the.
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Konduone 52w29 flame sensor replacement for lennox furnace flame sensor replaces 52w2901 lb 74940a 31l71 31l7101 fits for g40 g41 g50 g51 g60 g61 g71 3 4 out of 5 stars 13 7 99 7 99 9 99 9 99 get it as soon as tue may 12.
Did you check the furnace s filters.
I noticed that the flame would come on then go out after a few minutes then light then go out after another 3 4 minutes.
Remember you are not sanding down an auto body but simply ridding the sensor of any build up it may have.
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.
My furnace was shutting down after a a few minutes.
How do i remove the flame sensor to clean it on a lennox 80mgf series furnace.