Somewhere in your coach Battery compartment, there should be a (100 Amp?) breaker. This happened on mine and killed the slides, levelers and Generator. Doesn't quite sound like what's going on with you but there should be an automatic switch over solenoid near the Inverter/Electrical fuse panel that could have stuck. I found out that the wiring diagrams are not a lot of help. Mine has a switch next to the awnings and exterior light switches that kill the whole coach. Dumb place for it as it can easily be knocked when entering.