I have recently installed an Easysolar II GX to power our village hall in case of a power outage event. I have an AC grid connection and solar PV. I would like to prioritise solar over grid power whenever possible, so have enabled sustain mode in veconfig. This worked perfectly for 7 days, powering DC loads off solar during the day once both mains charger and smartsolar were at float, and running off battery at night, only drawing a few watts off the grid. Now the grid is powering everything and solar is totally ignored. What has happened as the Easysolar is not proirising PV anymore. I have the up to date firmware, any advice would be welcome. I have not configured anything in the ESS or DVCC as not feeding power back to grid. Thanks