Have a MultiPlus II and Cerbo GX color control. Working flawlessly until three weeks ago when I disconnected the inverter for about a week. After reconnecting via the disconnect switch, it began running as normal but I am now getting the grid lost alarm on the Cerbo and VRM, however no grid is or was connected. After clearing the alarm in VRM, it alarms again within a few minutes and will repeatedly alarm even when the alarms haven’t been cleared. Still, there is no grid to show as lost. Searching this forum shows some examples like mine but I haven’t seen a resolution yet. I know the alarm can be disabled but looking for the root cause of the alarm….Any help?