We have had the 03 Fleetwood Rev. Inside and plugged in to a 30amp 120 circuit for 2 months. Getting ready to take off next Monday and noticed that the battery state on the indicator was not showing...
Actually, most house batteries DO charge with the salesman switch in the off position. But easy to see how your works. Merely turn on the switch and see if the battery voltage comes up.
Sounds like an issue with the charger section of the inverter/charger. Inverter switch should have no impact on charger function.