I use the Quattro 15kVA in ESS for exporting power to the grid. When upgraded its firmware to the latest revision 2656460.vff the ESS performance turned erratic. After setting the Grid Set point to say -3000W the unit constantly flips between charging and discharging states with no real power going to the Grid.
Had to revert back to 2656431.vff and it behaves normally.
Has anyone else seen this behavior with the latest firmware?