I've 3 Multiplus configured in parallel mode and connected to a Cerbo GX.
This installation is Offgrid.
For changing some things in the installation I changed at the Cerbo the Multiplus State from "Inverter only" to "Off". Multiplusses went off and I did the installation changes (only on AC Side, DC has been connected all the time and the MPPTs were still charging the battery).
After all changes had been done I tried to change the setting from "Off" to "Inverter only" back on, but nothing happened.
It seemed that the Cerbo took the option but switches back to off a couple of seconds later. Multiplus state is unknown.
I tried that 4 times, also tried putting the Switch on the Master Multiplus from I to off and back to I.
Finally I removed the Ve Bus Cable from Cerbo (just the 3 Multiplus are connected) for a couple of seconds and now the multiplusses start inverting.
All other devices are not connected through VE.Bus, just the 3 Multiplus (MPPTS -> Ve.Can, Pylontech battery -> BMS Can).
What is wrong here? Bug? Sure that's not a problem when I'm at the installation, but what if not? Why is it necessary to remove the VeBus Cable?