11 Troubleshooting
SMA Solar Technology AG
Operating manualSTP8-10-3AV-40-BE-en-1278
Event number Message, cause and corrective measures
3801
3802
3805
DC overcurrent > Check generator
Overcurrent at the DC input. The inverter briefly interrupts feed-in operation.
Corrective measures:
• If this message is displayed frequently, ensure that the PV array has been
correctly rated and wired.
3901
3902
Waiting for DC start conditions > Start conditions not met
The feed-in conditions for the utility grid are not yet fulfilled.
Corrective measures:
• Ensure that the PV array is not covered by snow or otherwise shaded.
• Wait for higher irradiation.
• If this message is displayed frequently in the morning, increase the
voltage limit for starting grid feed-in. Change the parameter Critical
voltage to start feed-in.
• If this message is displayed frequently with medium irradiation, ensure
that the PV array is correctly rated.
4011
Bridged strings detected
The DC inputs A and B are connected in parallel.
4012
No bridged strings detected
The DC inputs A and B are not connected in parallel.
6002-6412
Self-diagnosis > Interference device
The cause must be determined by the Service.
Corrective measures:
• Contact the service.
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