SMA Solar Technology AG
70 SB50US-80US-IUS094030 Installation Guide
If the Sunny Boy is not operating as expected after the commissioning procedure has been
completed, refer to Section 7"Displays and Messages" (page71) and to Section
8"Troubleshooting" (page86).
If there is adequate solar irradiation and the resulting PV input voltage is greater than
300 V DC (365 V DC for Sunny Boy 8000US), the Sunny Boy will automatically begin
feeding power to the utility grid.
The Sunny Boy operates from the power produced by the PV array and is designed for
minimal internal DC-power consumption. The maximum power that the Sunny Boy will
consume in normal operation is 7 W.
Anytime the AC power is disconnected from the inverter, either manually or as a result of
an AC disturbance, the inverter will wait 5 minutes after the AC power has been restored
to reconnect. When servicing the inverter, always disconnect the DC first, then the AC.
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