My system is a new system based on two Multiplus II 3000/48 connected in master/slave, two 150/45 MPPT's, CCGX, and a BlueNova battery connected via Canbus.
I have the latest firmware installed on the MPPT's, Multi's, and CCGX.
When the system is physically disconnectted from the grid it is functioning perfectly supplying the critical loads and charging the battery during the day and running off battery at night.
I'm currently trying to implement ESS.
During the day when the contribution from the MPPT's exceeds the AC critical load it functions as expected in charging the batteries and supplying the critical loads.I have set the grid setpoint to -20W to always have a slight export to the grid.
However as soon as it starts getting dark the inverter switches to passthrough mode and supplies the load from the grid even though the battery SOC exceeds 98%.
Are there any other settings on the CCGX or the Multi's that I am missing?