Displays and Messages
7-2 SMA America SB3000US-4000US-11-SE1607
The basic definitions of the indicator lights are as follows:
The green LED indicates normal operation of the
inverter.
The red LED indicates the status of the GFDI fuse,
located inside the Sunny Boy. If this LED is lit, the
GFDI fuse has cleared or is not present.
The yellow LED indicates that there is a fault of
some kind, either inside the inverter or somewhere
in the PV system. The inverter will not operate until
the fault has been corrected. The different error
codes and possible causes are described later in
this section and in Section 8: “Troubleshooting”.
The red and yellow LEDs combined indicate that
the inverter has detected a ground fault. The
ground fault must be located and cleared and the
inverter reset manually. The inverter will not restart
automatically after detecting a ground fault. The
ground fault may also clear the GFDI fuse.
Note: All GFDI faults are disabled in turbine mode.
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