burner comes on for a very short time

Post all other heating and cooling questions here.

Moderators: Greg, Mark

Posts: 1
Joined: Mon Jun 01, 2009 2:42 am
Location: United States

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

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

Thu Oct 22, 2009 3:24 am


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.

Some people are Humbly Grateful, while some are Grumbly Hateful.................... Which one are you ?