B Brad Member Jan 22, 2011 #1 I have a Lennox Model G26Q3-75-7 Elite Series furnace. Fresh air intake and Exhaust vents appear unobstructed, Furnace filter is ok. diagnostic lights indicate normal operation.
I have a Lennox Model G26Q3-75-7 Elite Series furnace. Fresh air intake and Exhaust vents appear unobstructed, Furnace filter is ok. diagnostic lights indicate normal operation.