SMA SB 4200TL Multi-String - Manual (Page 24)

Device Description SMA Technologie AG
Page 24 SB4200-12:FE4804 Operating Instructions
Discharge Current too High
When the failure occurs, the yellow failure LED is on for five seconds and then starts
the blinking code by staying off for three seconds and then blinking six times in short
intervals. The code is sent three times.
If the failure persists, the signal starts from beginning.
The discharge current of the inverter and the PV generator exceeds 95 mA. The de-
vice immediately interrupts feeding operation when this limit has been exceeded and
then automatically reconnects to the grid.
The discharge current depends on the capacity of the PV generator towards ground.
This depends on the way the modules are installed as well as on weather conditions.
It is therefore normal that this value varies over time.
This failure can also occur when the PE connection (protective ground) is defective.
Should the Sunny Boy 4200TL Multi-String indicate this failure often, please ask the
installer of your PV plant to find the cause of the high fault current.
5 s 3 s 1 s 1 s 1 s 1 s 1 s 1 s
LED on LED off
Yellow LED is blinking 6
times in short intervals.
The signal is repeated 3 times and
then starts from the beginning.