107

Harmonic Distortion

Fronius · Symo Advanced

What does 107 mean?

This status code indicates that the Fronius Primo GEN24 208-240 inverter has detected high harmonic distortion in the utility grid. This can be caused by the presence of heavy inductive or capacitive loads on the grid, or the inverter operating in a weak grid environment.

Common Causes

  • Presence of heavy inductive or capacitive loads in the grid, introducing harmonic distortions.
  • The inverter is operating in a weak grid scenario, making it more susceptible to harmonic issues.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Evaluate the quality of the AC grid for harmonic content, if possible using a power quality analyzer.

  2. 2

    De-energize the inverter (switch off AC and DC disconnects), wait for 5 minutes, then re-energize to reset. If the message persists, the inverter may require service.

Browse all codes in this manual (41)
Verified technical data. Last updated: March 2026

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