11 Troubleshooting
SMA Solar Technology AG
Operating manualSTPxx-US-50-BE-en-1182
Corrective measures:
• Check the grid voltage and connection on the inverter.
If the grid voltage lies outside the permissible range due to local grid conditions, ask your grid
operator if the voltage can be adjusted at the feed-in point or if it would be acceptable to
change the monitored operating limits.
11.1.28 Event 6901
Event message:
• Self-diagnosis > Input B defective
Explanation:
Polarity error on the inverter.
Corrective measures:
• Check whether a string is connected to input B.
• Contact the Service.
11.1.29 Event 7001
Event message:
• Fault sensor interior temperature
Explanation:
A temperature sensor in the inverter is defective and the inverter interrupts the feed-in operation. The
cause must be determined by the Service.
Corrective measures:
• Contact the Service.
11.1.30 Event 7014
Event message:
• Sensor error step-up converter temperature.
Explanation:
Fan constantly on
Corrective measures:
• Contact the Service.
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