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Error code - 103 - Grid voltage is too high.

SMA Manual Recommendation -

Error No.ExplanationCorrective measures
103Line voltage is too high.
Overvoltage detected by redundant monitoring.
  • Check the line voltage
  • Check the grid connections
  • Check stability of the utility grid.
  • Make sure the external fuses function properly.
  • Make sure the AC cable connections are securely connected.

Description - The system has detected excess voltage through the line.

Troubleshooting Actions - Inspect the voltage of line and the connection to the grid. AC connections to the grid need to be secure and without fault when in operation. Test line voltage for stability.

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