SMA SUNNY TRIPOWER X 12 Operating Manual page 78

11 Troubleshooting
Explanation:
An overtemperature has been detected in the choke area.
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 inverter is not exposed to direct solar irradiation.
11.1.36 Event 6512
Event message:
• Minimum operating temperature not reached
Explanation:
The inverter will only recommence grid feed-in once the temperature has reached at least −25°C.
11.1.37 Event 6602
Event message:
• Overvoltage grid (AF)
Explanation:
The effective value of the grid voltage is above the permitted voltage threshold values for a
specified period of time (AF limit).
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.
11.1.38 Event 6801
Event message:
• Self-diagnosis > Input A defective
Explanation:
Polarity error on the inverter
Corrective measures:
• Check whether a string is connected to input A.
78 STPxx-50-BE-en-10
SMA Solar Technology AG
Operating manual