I have a new home, new 5 Ton York dual compressor and vari-speed fan, It has been a mess from day one because I live in an area where they have no idea how these things run. I think I am more up to speed on this thing since I now have the manuals memorized..
My first issue is the fan was always running full blast or it seemed, So with a little help from a tech guy, I think we found that the single stage of the compressor is never running on its own, it jumps to dual everytime.
Is this possible? My bills are crazy, and friends who have these can't hear their unit run, mine sounds like a forced air furnace.. Blasting on for 10min and then off..