107

No AC grid

Fronius · Solar Energy

What does 107 mean?

No AC grid connection is detected by the inverter. This prevents the inverter from feeding energy into the grid.

Common Causes

  • Absence of AC grid voltage
  • Faulty AC grid connection
  • Tripped circuit breaker upstream of the inverter

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check all AC grid connections at the inverter and point of common coupling

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Verified technical data. Last updated: March 2026

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