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ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

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.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

Related Faults

102AC voltage too high103AC voltage too low105AC frequency too high
Source: Fronius Symo Advanced Manual
Open Manual (Page 41)Search more codes in this manual