DGAT056BDD first two flash, now one flash

Questions about repairs and parts for Coleman furnaces, air conditioners and heat pumps for manufactured homes. Click here for Coleman parts.

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casper98
Posts: 4
Joined: Wed Mar 04, 2009 1:56 am
Location: Minnesota

1995 Coleman DGAT056BDD. Old booster motor ran but I was getting a centrifugal switch (two flash) code. Replaced booster/centrifugal unit and got rid of the two flash code but still don't have a furnace because of the one flash ignition failure code. Now what? Flow chart seems to point to the ignitor. I can hear the centrifugal click, ignitor doesn't glow as it should, I hear the gas valve open and close. Seems odd that two things would fail simultaneously.. Help! It's cold out :(
DaleM
Posts: 385
Joined: Wed Apr 07, 2010 10:07 am

If everything is "clicking" correctly and igniter is not glowing, replace igniter. I would test for power to the igniter first with a multitester. You should get 120v to the igniter terminals/plug at some point during the start up process. If you have power then igniter is bad.
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