BStone

Appears to be activating both. Tank pressure slowly decreases then the main battery breaker trips after about 30 seconds and still about 80 psi in tanks

Big Dave,

I would expect simply dumping the air to be the extent of the circuit. In my case, the switch is defiantly powering the leveler circuit somehow. Sound is a little different when actually powering the levelers from the manual panel but localized the source to the hydraulic pump unit. 

Bob, 

Yes. Seems to be very wrong. Will have to trace out the circuit and try to understand why...

2003 Monaco Knight air dump switch seems to activate leveler pump (we think) along with air valves. This doesn't seem right. The fuse panel says that the air dump circuit is 2 amp fuse but there is a 15 amp fuse installed. Pushed switch to lower coach and empty tanks but ended up tripping chassis battery breaker after about 30 seconds. Has anyone had any experience with this circuit? I'm used to air dump circuits only dumping air and not powering up another circuit.