My Quattro 48/8000/110-2x100 backfeeds to the Grid regardless of having no assistants. The inverter is installed with a xxxx160 firmware version when the latest is XXXX209 as per the VRM remote firmware updates. However, the firmware updates keeps failing each time I am trying to update.
The configuration is three inverters configured as a three phase buck-up system.
Any idea why the backfeeding is happening and refuses to update to the latest firmware?
