Don't know that I've ever seen such a message, as we have the ME 2012 with ME RC remote panel, and have our own issues to investigate from time to time - but a RESET might be in order.
You can press and hold the tiny on/off button on the end of the Inverter where the communications cables attach.... and then press again for back on. Or, you can simply detach the Positive main battery cable, then reattach.
If not, Magnum has a terrific customer service, give them a call.
'14 Palazzo 33.3 bunkhouse 34' diesel
KingTailgater2 Dish HD, 100w/5a SOLAR, BlueOx
110,000+mi since '14 - US, Alaska, Canada (also, '14 Gulfstream Amerilite and '07 ForestRiver Rockwood) : )b