11-03-2014, 04:24 PM
Richard, it is my thinking that the 12 volt HWH leveling system should have nothing to do with and be independent of the 110 volt compressor system. I would start by confirming that there is only one wire going from the air pressure switch to the compressor. If more than one, then there is a potential override somewhere. I would start by replacing the pressure switch which on my coach is located in the front curbside bay near the air tank.
2001 Newell #579
tow a Honda Odyssey
fun car: 1935 Mercedes 500K replica