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
Check all AC grid connections at the inverter and point of common coupling
Verified technical data. Last updated: March 2026
Related Faults
Source: Fronius Solar Energy