I have a 3 Phase ESS, 3x Multi2 48/5K with ESS with external control.
When i send a grid setpoint, the L1 Multi refuses to respond. L2 and L3 behave like expected, but L1 simply stays idle. In the example the grid setpoint is -400W for each phase. The setpoint is correctly received at the multi, when i read the register it shows the set value. The multi simply doesn't want to do anything.
Settings are the same in all 3 multi's.