Carrier condensing
My furnace runs for a while then shuts down for a while. Maybe 10 minutes on then 15 off, and repeat over and over. I can make it run continuous by bypassing the air pressure switch. I have replaced the draft blower motor thinking maybe the draft was weak. No change. I put my hand next to the exhaust and I feel a good draft. When it runs everything seems good, flame color etc. I can't figure out what would make the air pressure switch shut it down after a while. My house only gets up to 55 degrees. I might replace the switch but doubt that is the issue. Any thoughts?
My furnace runs for a while then shuts down for a while. Maybe 10 minutes on then 15 off, and repeat over and over. I can make it run continuous by bypassing the air pressure switch. I have replaced the draft blower motor thinking maybe the draft was weak. No change. I put my hand next to the exhaust and I feel a good draft. When it runs everything seems good, flame color etc. I can't figure out what would make the air pressure switch shut it down after a while. My house only gets up to 55 degrees. I might replace the switch but doubt that is the issue. Any thoughts?
source https://hvac-talk.com/vbb/showthread.php?2226684-Furnace-cycling-on-and-off-because-of-APS&goto=newpost
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