I believe the AC requires 12 volt at the thermostats to function. Probably the reason the AC does not work. Sounds like a 12 volt issue. Check the usual suspects, the 12 volt switch at the door, reset the inverter/converter, check connections at battery, and check fuses.
Maybes someone familure with your rig can help locating fuses to check.
Paul, Kathy, and Tux the Mini Schnauzer
2014 Tiffin Phaeton 42 LH, 2013 Honda CRV
"When the time comes to look back, make sure you'll like what you see"