HI Johan,
Looks like your thread has been hijacked… IN regards to your question about Inverter not starting. This is not a new issue due to the upgrade. I have systems that have the same problem with older version I have never received a good explanation.
My Experience is primarily with Quattro products. We do not use many multiplus.
Problem is particularly accute if you have the Inverter in “remote OFF” or “Charge Only” with loss of DC power. The system gets locked into an OFF state and the only way to recover is to unplug the Cerbo. then miraculously after a few seconds the Inverter or charger If AC is present restarts. Switching the Quattro ON/OFF does not restarts the system as you would hope it does. It “appears” that the Cerbo is the one holding the system OFF.
This is a particularly annoying “feature”. Here is link to the post i Wrote:Quattro VeBus Loosing Connection after remote Charge Only mode - #7 by Jean-Marc
Using the Cerbo to switch between state if the Quattro is listed does not produce any change. Sometimes after a Cerbo reboot, the Quattro does not reappear in the device list. So the Quattro seems physically OFF.
Sometimes I have to both remove the Cerbo and cycle the DC power for the system to work.