SMA SUNNY TRIPOWER X 20-US - Page 80

11 Troubleshooting
SMA Solar Technology AG
Operating manualSTPxx-US-50-BE-en-1180
• 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.
11.1.22 Event 4301
Event message:
• Serial electric arc in string|s0| detected by AFCImodule
Explanation:
The inverter has detected an electric arc. The inverter stops feeding into the utility grid.
Corrective measures:
• Disconnect the inverter from all voltage sources.
• Check the PV modules as well as the cabling in the affected string for damage.
• Ensure that the DC connection in the inverter is correct.
• Repair or replace defective PV modules, DC cables or the DC connection in the inverter.
• Reset the operation inhibition after an electric arc if necessary.
11.1.23 Event 6001-6468
Event message:
• Self-diagnosis
• Device fault
Explanation:
The cause must be determined by the Service.
Corrective measures:
• Contact the Service.
11.1.24 Event 6501
Event message:
• Self-diagnosis
• Overtemperature