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DGAA090BTA Furnace running but not heating

Posted: Sun Nov 04, 2007 6:58 pm
by shelbyvinson
I looked at a coleman DGAA090BDT furnace today the complaint was furnace running but hot providing hot air. I checked all components and they seemed fine. The furnace cycled on, burner lights, and the blower came on. the furnace would not gererate any heat. I do not know the internals of a coleman furnace, there seemed to be only one burner and I could not see the heat exchanger. I did not have all my equip to check gas pressure or any type of temp rise. what else could I look for or check

Shelby Vinson

RE: DGAA090BTA Furnace running but not heating

Posted: Sun Nov 04, 2007 9:04 pm
by Robert
Check for blockage in gas valve/burner orifice (spider/web).


Thanks,
Robert

Posted: Mon Nov 05, 2007 3:30 pm
by shelbyvinson
Thanks, I will check the burner