11 Troubleshooting
SMA Solar Technology AG
Operating manual STPxx-US-50-BE-en-11 81
Explanation:
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 inverter is not exposed to direct solar irradiation.
• Ensure the maximum ambient temperature is not exceeded.
11.1.25 Event 6511
Event message:
• Overtemperature
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.
11.1.26 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.
11.1.27 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).
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