Hi Mike, Thanks for the reply, I use the iPhone App and that appears to be now Inverter Settings rather than System settings behind that top RHS Cog. The options I am presented with are ECO, Timed Charge, Timed Discharge, Timed Export, Battery Options and Reset to defaults . None of them seems to have the solar +grid option that admin was referring to. I did wonder if it was buried somewhere and I kept missing it .