Make sure all of the wiring is making good connection. I had the 4 ga. wire, which powers the inverter, slide right out of the ring connector. The crimp on the connector was done improperly. Since I don't have a crimping tool that large, I recrimped with welding clamp vise grip and all is good.
The inverter may have gone bad as well. Sounds like a warranty visit may be in order.
Mule: 2016 RAM Mega Cab Dually, 4X4, Demco Hijacker 21K Autoslide on RAM Puck, Laramie, 6.7, Aisin, 4:10's, Loaded
Wagon: 2015 Pinnacle 38FLSA, Sailun G's, Center Point Air Suspension, 572 Watts Solar w/4 T-145s.