Dear community,
My question concerns a grid-connected Victron Multiplus II system with AC and DC coupled PV. Three batteries are connected and each managed by an individual BMS. To avoid issues with BMS specific maximum charge and discharge limitations that do not take into account that multiple batteries are available, I decided to not use one of the available BMS as Controlling BMS in the DVCC settings.
However, as soon as I set Controlling BMS = None and reset BMS control in my DC-coupled MPPTs to ensure that there is no controlling BMS for the MPPTs, the Multiplus II show a low battery voltage warning which in fact does not apply. The low battery warning is cleared once I select one of my available BMS as Controlling BMS in the DVCC settings.
Reproducible, once Controlling BMS is set to None, two notifications are generated: BMS connection lost + Low battery voltage. Also reproducible, once I set a Controlling BMS, no notifications are generated upon rebooting Cerbo GX.
I could imagine that the Multiplus II still expect a Controlling BMS. Is a reboot of the Multiplus required once Controlling BMS is set to None or what else needs to be done after setting Controlling BMS to None? Does anybody has a hint as how to proceed?
Thank you all for your kind support.
Best regards,
Peter