Xantrex 458 Inverter not turning on
We have a 04 Fleetwood Discovery 39J and I can't get the inverter to turn on. I checked the breaker in main cabinet under bed and 2 on inverter itself and both seem to be fine. Batteries are all new and good, showing 12.5V on main display. Can someone please point me in a direction to continue troubleshooting.