Author Topic: DGAA070BDTB gas furnace  (Read 3056 times)

Offline jknotts44

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DGAA070BDTB gas furnace
« on: February 26, 2013, 04:10:40 PM »
I am having problems with my furnace, it turns on but it won't ignite. It has an electronic ignition, it is a gas furnace. The trouble code indicates the a limit switch is open. I tried jumping the limit switch and still no luck. I tested the motor, it spins freely. I am having trouble narrowing this down. Any help is appreciated, thanks.

Offline Admin

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Re: DGAA070BDTB gas furnace
« Reply #1 on: February 27, 2013, 09:07:16 AM »
Is that a Coleman furnace?

If you are jumpering out the primary limit and certain it is closed, then you probably have a bad control board.  Double check all the low voltage safety switches just to be sure they are all closed.  Most will be automatic reset swicthes, but there may be a roll-out switch that would need to be manually reset.  In that case you may have an underlying problem.

Control Board Part #: 03101932002