Little bungalow in US midwest. Heil gas furnace on it's 2nd season.
Standard forced air, std install. Gen'lly works well.
Heat cycle begins:
1.) t-stat calls for heat
2.) Inducer fan spins and pressure switch closes (15+ sec)
3.) Igniter is powered (17 sec)
4.) Gas valve opens, burners fire. Flame senser keeps gas valve open when
5.) Igniter is powers down
6.) Blower runs after 30 sec
Works OK about 4 of 5 times.
The fifth time, it works OK thru 3.). The igniter is like a glow-
plug: I can see it red-hot. The gas valve opens, and the burners
fail to fire. It then flashes the code for burner-fire-failure, and
goes back to 3.). It usually (but not always) works on the first re-
There is a lockout after 3 failed tries. This hasn't happened yet.
It's a good thing: it's damned cold here.
Inside of the unit looks clean as a whistle. I blew compressed air
thru the lead burner anyway. I've inspected the igniter and flame
senser. They look fine. The contractor's roving trouble-shooter
suggested goosing the (gas) manifold pressure, which I've done. No
Not certain where to go from here. Any/all info/suggestions etc much
"Take Yo' Hand Out My Pocket (I Ain't Got Nothing What Belongs To You)!"
- Rice Miller, who probably never even _heard_
of GW Bush, Paulson, etc