12 Troubleshooting
SMA Solar Technology AG
Operating manual
SB55-LV-JP-41-BE-en-13
72
Event number
Message, cause and corrective measures
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.
6001-6416
Self-diagnosis > Interference device
The cause must be determined by the Service.
Corrective measures:
• Contact the Service.
6501
6502
6509
Self-diagnosis > Overtemperature
The inverter has switched off due to excessive temperature.
Corrective measures:
• Clean the cooling fins on the rear of the enclosure and the air ducts on
the top using a soft brush.
• Ensure that the inverter has sufficient ventilation.
• Ensure that the ambient tempe40°C has not been exceeded.
• Ensure that the inverter is not exposed to direct solar irradiation.
6512
Minimum operating temperature not reached
The inverter will only recommence grid feed-in once the temperature has
reached at least −25°C.
6603
6604
Self-diagnosis > Overload
The cause must be determined by the Service.
Corrective measures:
• Contact the Service.
