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QS-022 · Grid voltage & grid connection

Fronius state 107 No AC grid, zero production. Quick checks?

The short answer
Check the AC breaker and local power cut; if permanent, the installer checks the AC connection.

Plain explanation

From the Fronius manual for the Primo/Symo SnapINverter: Check the inverter AC breaker in the distribution board is ON. Check for a power cut in the area (temporary outage clears itself). The rest of the checklist is below; work through it in order. Installer only: DC and AC work on a live PV system is dangerous, so owners should note the code and call their installer. Grid limits depend on your country, so check your national code and grid operator rules.

Steps from the source

  1. Check the inverter AC breaker in the distribution board is ON
  2. Check for a power cut in the area (temporary outage clears itself)
  3. If permanent → installer checks the AC connection

Source

Fronius support page: SnapINverter (Primo/Symo/Eco) state codes & Datamanager, State code 107www.fronius.com ↗

Where installers ask this

General guidance based on the manufacturer's manual or the named source. Always follow the current manual for your exact model and your national code. DC and AC electrical work is for qualified installers only. Not affiliated with or endorsed by any brand named; trademarks belong to their owners.

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