Coleman furnace troubles
Posted: Sun Mar 16, 2008 11:53 pm
I have a Coleman Furnace Model# DGAA077BDTB Serial# WOM5310911. The problems I'm having is that the furnace keeps quitting on me. The diagnostics codes it gives me are two flashes for combustion air switch failed to open or three flashes for combustion air switch failed to close. I've changed the thermostat, I've tried reseting the power, what can I do?