SMA SUNNY ISLAND 4.4M Operating Manual page 149

SMA Solar Technology AG
Event number Message, cause and corrective measures
3809 Overcurrent in inverter bridge at line conductor Lxx
Too much current is flowing through the DC connection of a Sunny Island at line conductor
Lxx.
Corrective measures:
6120-6135
Device fault
OCU watchdog has triggered (an error has occurred in the program sequence).
Corrective measures:
6316
Device fault
Voltage or current measurement interferences at external measurement point of the AC sub-
distribution (Multicluster-Box) at line conductor Lxx.
Corrective measures:
6463 Device fault
Corrective measures:
6465 Device fault
Processor voltage in the device at Lxx is incorrect.
Corrective measures:
6466
System failure
15 V voltage supply or 24 V voltage supply in the Multicluster Box is defective.
Corrective measures:
6502-6514
Overtemperature
Temperature of the transformer or the heat sink in the Sunny Island at line conductor Lxx is
too high (due to overload or ambient temperature).
Corrective measures:
Operating manual
• Reduce the power of the loads.
• Contact the Service.
• Ensure that the control and measuring cable between the Multicluster-Box and the
corresponding Sunny Island of the main cluster is correctly inserted. When doing so,
observe the correct sequence of the Multicluster-Box connections to the Sunny Island
inverters (see the Multicluster-Box documentation).
• Contact the Service.
• Contact the Service.
• Contact the Service.
• Ensure that the Sunny Island is functional. For this, disconnect all AC sources and loads
from the Sunny Island and restart the Sunny Island.
• Reduce the total power of the loads, e.g. by staggering their use over time.
• Clean the fans.
14 Troubleshooting
SI44M-80H-13-BE-en-15 149