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Combustion air switch

Posted: Thu Nov 06, 2008 10:47 am
by YB Norml
I have been lurking on this forum and have found answers to my questions until now. I have a Coleman model # DGAA090BDTA that we turned on for heat a couple of weeks ago. I got the 3 blinks that indicate that the combustion air switch failed to close. I purchased-thru the catalog part # 024-27666-001-the switch and installed it. Turned the furnace on and got the same 3 blinks. I can induce and hold vacuum on the - side of the switch and the furnace will fire and run. When I release the vacuum the furnace shuts off and I get the same 3 blinks as error code. Any help would be appreciated.

Thanks in advance

RE: Combustion air switch

Posted: Fri Nov 07, 2008 1:28 am
by Robert
Hi,

Check air pipe for blockage, be sure booster motor is running, check small hoses for kinks, blockage or damage.


Thanks,
Robert

Posted: Sat Nov 08, 2008 9:20 am
by YB Norml
Thanks for the quick reply. Will check those items.
Max

RE: Combustion air switch

Posted: Mon Nov 10, 2008 1:40 am
by Robert
You're very welcome, happy to help.



Thanks,
Robert