11 Troubleshooting
SMA Solar Technology AG
76
STP5-9TL-IA-en-10
Installation Manual
6437 …
6438
Self diagnosis
Interference device
The cause must be determined by the SMA Service
Line.
Corrective measures:
• Contact the SMA Service Line.
6501 …
6502
Self diagnosis
Overtemperature
The inverter has switched off due to an excessive
temperature.
Corrective measures:
• Clean the fans (see Section 11.8).
• Ensure that the inverter has sufficient ventilation.
6509
Self diagnosis
Overtemperature
The inverter has switched off due to an excessive
temperature.
Corrective measures:
• Clean the fans (see Section 11.8).
• Ensure that the inverter has sufficient ventilation.
6511
Overtemperature
The inverter has switched off due to an excessive
temperature.
Corrective measures:
• Clean the fans (see Section 11.8).
• Ensure that the inverter has sufficient ventilation.
6603 …
6604
Self diagnosis
Overload
The cause must be determined by the SMA Service
Line.
Corrective measures:
• Contact the SMA Service Line.
6801 …
6802
Self diagnosis
Input A defective
The cause must be determined by the SMA Service
Line.
Corrective measures:
• Contact the SMA Service Line.
6901 …
6902
Self diagnosis
Input B defective
The cause must be determined by the SMA Service
Line.
Corrective measures:
• Contact the SMA Service Line.
Event
number
Display message
Cause and corrective measures