burner comes on for a very short time

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bigjoe357
Posts: 1
Joined: Mon Jun 01, 2009 2:42 am
Location: United States
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Wed Oct 21, 2009 9:33 am

good morning,
i have a coleman model #DGAT056BD , the furnance fires for a very short period (about 5 secs)
than goes out and it will cycle and do it again and just keeps repeating this, the blower is working fine i replaced the batterys in the therostat there are no codes flashing, what could the problem be? thanks Joe


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Robert
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Posts: 6413
Joined: Wed Feb 28, 2007 12:07 am
Location: Tennessee

Thu Oct 22, 2009 3:24 am

Hi,

Check the remote flame sensor for cracks and clean the rod with steel wool.

Could also be the ignitor, blockage in burner orifice or orifice spud(spider/web), dirty burner.


Try those first and if still not resolved, call an hvac tech out for testing of furnace components.


Thanks,
Robert
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