SMA SB 700U - Manual (Page 57)

SB700U-11:SE3207 SMA America 6-9
High Input Voltage
The yellow LED is on for 5 seconds, remains off for 3 seconds and then blinks 4
times. The code is repeated 3 times. If the condition remains the code will continue
to be sent.
The inverter has detected an input voltage that is too high for safe operation.
WARNING:Disconnect the PV array from the Sunny
Boy immediately! High input voltage can
permanently damage the inverter. Have the PV
array checked by a qualified technician.