I commissioned a GridBOSS/FlexBOSS21 combo with a single PowerPro WallMount Indoor, generator, and no PV yesterday. I updated the firmware on both devices, programmed it for peak shaving, self consumption, Smart Ports etc. and it seemed to be working normally, but when I went to test Power Backup mode by flipping the main grid breaker, power went off to the home and did not come back on, even after several minutes. I believe the front display panel on the GridBOSS had no lights, while the inverter seemed to be operating normally. After restoring power by flipping the grid breaker, the generator turned on and ran for about two minutes without providing any power to the system. I confirmed that it wasn't a regularly scheduled exercise time (which would have been quite the coincidence).
Power Backup and Seamless EPS Switching are enabled on both GridBOSS and FlexBOSS, and the system was switching back and forth between battery and grid as instructed by the working modes. Has anyone encountered this issue before? I have commissioned 18k systems in the past and not seen anything like this.
A separate but possibly related issue is that the generator is set to Generator SOC Enable (which is my preference) but even if I disable that setting I cannot enable Generator Remote Turn On and I cannot start use the Start Generator button on the Monitor tab. In both cases I get "Operation failed, error code: 3". This is a Generac standby with two wire start.
