SMA SB 700U - Manual (Page 49)

SB700U-11:SE3207 SMA America 6-1
Section 6:
Displays and Messages
Each Sunny Boy inverter comes equipped with a three LED status indicator. This
allows the user to determine the operating mode of the inverter at a glance. The
basic definitions of the indicator lights are as follows:
The green LED indicates that the inverter is operating and in which mode.
The red LED indicates that the GFDI fuse, located in the holder on the underside of
the inverter, is defective.
The yellow LED indicates that there is a fault of some kind, either inside the inverter
itself or somewhere in the system, and that the inverter has ceased operation until
the fault is corrected. The different error codes and possible causes are addressed
later in this section.
The red and yellow LEDs combined indicate that the GFDI 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.