Original message
| wl_vacanti
 |  "Heater won't go on"
, posted Tue 6 Nov 16:24  
I have a Colemen fernace, Model # DGAA056BDJA Nat. gas. ignition lights up but it won't light up the fern. I get a green light flashes on my LED "Ignition Failure" Gas valve was changed out a month ago and filters changed, but the weather got colder and now it won't start up. I ck. My t-stat and its calling to start up. Also at one point my LED was flashes 3, Flashes 3 times in a row, "Combustion Air Switch Failed to closed" What do I need to do to get this unit running again? Thank You
Bill
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Replies:
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| Nevada
| "Re(1):Heater won't go on" , posted Wed 7 Nov 14:58
Could be a bad suction switch, clogged exhaust or heat exchanger, or you IDF may not be turning fast enough.
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