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View Full Version : Furnace will start and light then the flame goes out. Clean flame sensor then works

rbar1960
Jan 2, 2016, 10:24 AM
Furnace will light then the flame goes out. I clean the flame sensor and then it works correctly for a while and have to repeat
ma0641
Jan 2, 2016, 10:49 AM
Sounds like a safety is tripping and then resetting. Make sure all filters are clean and vents are open.