SMA SB 3800-U - Manual (Page 51)

Displays and Messages
SB3800U-12:SE2006 SMA America 7-3
LED Operation Indicators
Standby (Night)
The inverter is in standby mode because the DC input voltage is too low for operation
or no DC is connected.
Initialization
The inverter is initializing. The power from the array is sufficient to initialize control
power, but not yet powerful enough to begin normal operation. Data transmission is not
possible during initialization.
Occasionally, during inclement weather or low irradiation, the LEDs may all turn on at
once and then go off again. This indicates that the inverter is trying to initialize but the
power available from the array is not sufficient for normal operation. This is not a
malfunction.
All LEDs are off
All LEDs are on