11 Troubleshooting
SMA Solar Technology AG
Operating manualSTPxx-US-50-BE-en-1178
11.1.16 Event 1501
Event message:
• Reconnection fault grid
Explanation:
The changed country standard or the value of a parameter you have set does not correspond to
the local requirements. The inverter cannot connect to the utility grid.
Corrective measures:
• Ensure that the country standard has been configured correctly. To do this, select the
parameter Set country standard and check the value.
11.1.17 Event 3501
Event message:
• Insulation error
• Check generator
Explanation:
The inverter has detected a ground fault in the PV array.
Corrective measures:
• Check the PV system for ground faults.
11.1.18 Event 3601
Event message:
• High leakage current
• Check generator
Explanation:
The leakage current of the inverter and the PV module is too high. There is a ground fault, a
residual current or a malfunction.
The inverter interrupts feed-in operation immediately after exceeding a threshold. When the fault is
eliminated, the inverter automatically reconnects to the utility grid.
Corrective measures:
• Check the PV system for ground faults.
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