107

No AC grid

Fronius · Symo Advanced Manual

What does 107 mean?

The inverter has detected a loss of connection to the AC public grid. It will disconnect and continuously monitor the grid, attempting to resume feeding energy once the grid is detected and stable.

Common Causes

  • Utility grid outage or disconnection
  • Tripped AC automatic circuit breaker or blown fuse
  • Loose or damaged AC grid connections

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    If this status code keeps recurring, contact your system engineer for further grid analysis.

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Verified technical data. Last updated: March 2026

Related Faults

Source: Fronius Symo Advanced Manual