SMA SB 5000-US - Manual (Page 67)

SMA America, LLC Displays and Messages
SB50US-80US-IA-en-37 SB50US-80US-IA-en-37 67
Cleared GFDI Fuse
The GFDI fuse was cleared or is not present. This fuse protects the PV plant if a ground fault is present
in the PV array.
• Locate and rectify the ground fault. Observe section 9 ”Troubleshooting” (page 78).
• Then replace the GFDI fuse. The GFDI fuse is located in the fuse holder on the inverter board.
Control System Fault
The yellow LED is continuously lit up. Operation of the Sunny Boy is permanently inhibited
The inverter no longer feeds into the power distribution grid and must be serviced by a qualified
service technician.
• Follow section 7.2 ”The Sunny Boy Does Not Resume Operation” (page 59) or contact SMA.
CAUTION
Risk of fire due to incorrectly dimensioned fuse.
Risk of injury due to fire.
• Only replace faulty fuses with fuses of the same type and size.
• The Sunny Boy is shipped with a Littelfuse KLKD 1 Amp, 600 V AC/DC type fuse.