Displays and Messages
SMA America, LLC
62
SB50US-80US-eng-IUS112633
Installation Guide
The Sunny Boy automatically begins feeding power into the power distribution grid if there is sufficient
solar irradiation and the resulting PV input voltage is larger than 300 V DC (for the Sunny Boy 8000-
US 365 V DC).
8 Displays and Messages
The Sunny Boy LED Status Indicators
Each Sunny Boy inverter is equipped with three LED status indicators that display the operating mode
of the inverter.
If the Sunny Boy does not begin operation:
Observe section 8 ”Displays and Messages” (page 62) and section 9 ”Troubleshooting”
(page 77).
If there is a ground fault in the PV array, the message “EarthCurrentMax” will be
displayed and the GFDI fuse will clear.
• If this message is displayed, switch off the DC and AC disconnect switches to the
inverter and troubleshoot the PV array.
The green LED indicates standard operation of the inverter.