Using two MultiPlus II 48/5000/70-95 120V. After installing v556 and the latest ESS Assistant, I am seeing the inverters oscillate between 5500 and 8200 watts on a 10 second interval (more or less) when the Limit inverter power is set above 6500 watts. At 6500 or below is operates as expected. This worked fine before the upgrade set as high as 8000 watts.
Flashing the firmware to v510 appears to have fixed this problem. Now if I can figure out why feed-in seems to be limited to 2K. Wondering if this is related to the latest ESS Assistant release and if there is a way to downgrade that as well.