Hey everyone, looking for some thoughts on my situation. I have a 10yr/old Arcoaire 90% propane furnace that keeps tripping on a flame rollout switch. It looks like the downstream burner (1 of 2) isn't burning clean (sooty and blue/orange flame). I took some compressed air and a vacuum to the Venturi/orifice of the burner which got rid of a lot of build up but I'm still tripping the rollout switch. My thoughts are that possibly that side of the HX is plugged, could be a crack in that side of the HX or maybe gas pressure could be low? Am I on the right track? Are these style HX's even split into 2 sides like I'm thinking in my head?
Any thoughts are appreciated! Thanks!
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