Displays and Messages SMA America, LLC
62 SB50US-80US-IA-en-36 Installation Manual
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.
The green LED indicates standard operation of the inverter.
The red LED indicates the status of the GFDI fuse, located
inside the Sunny Boy. If this LED lights up, the GFDI fuse
has cleared or is not present.
The inverter does not feed into the power distribution grid.
The yellow LED indicates that there is a fault in either the
inverter or the PV plant. The inverter will not operate until
the fault has been corrected.
The possible error messages and causes are explained
later in section 9 ”Troubleshooting” (page 77) and in
section 8.2 ”LED Fault Indicators” (page 66).
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