I have a carrier furnace 9200 weathermaster. This is a condensing furnase.
I am having problems with the flame. When I pull off the cover to the burners the ignator lite and gas goes on, every thing works.When I have cover on ignator lites, but no flame. My burners do not lite. I am geting power to the pressure switch and the gas valve is turning on, but burner doesn't lite. I think I am getting too much neg pressure in the burn box.
I have check all my hoses for plugs, I pulled off the inducer motor to clean it (looked ok) I replaced the pressure switch and I pulled both the intake and exhaust pvc pipes to check for blockage. I also pulled the condensor trap and flushed it. That was also ok. THis has an evaporator at the top. Should I pull the cover and clean it? Am I missing something easy?