SMA · SUNNY BOY SMART ENERGY Inverters
If the green LED is off, it means there is no DC voltage being supplied to the inverter from your photovoltaic modules. This indicates that the PV system is not currently generating any power.
Click steps to track your progress.
Ensure that the DC load-break switch on the inverter is in the 'ON' position.
Check for sufficient sunlight on your PV modules and ensure there's no heavy shading.
Verify that the PV strings are correctly connected to the inverter.
If the issue persists, contact a qualified installer for inspection of the PV array and wiring.