560 on a Fronius International GmbH Fronius SnapINverter: Power derating caused by overfrequency
Short answer
On a Fronius International GmbH inverter, 560 means: Power derating caused by overfrequency. The inverter keeps running with some functions stopped. An engineer is needed to fix the cause.
Reviewed 24 September 2026 · 1 source
What it means
The manual says: Power derating caused by overfrequency.
Part involved: frequency derating.
When it shows: Class 5 status code.
Likely causes:
- Rectified automatically once grid frequency is back in range; if recurring contact your system engineer.
Is it safe?
| Does the inverter stop? | Partly |
|---|---|
| Severity | Warning |
| Engineer needed? | Yes |
The inverter keeps running with some functions stopped.
Resetting itself: yes.
Manual reset: Automatic when condition clears.
What you can check
- Read the state code on the inverter display or in Fronius Solar.web and note date/time for your installer.
- No action needed if occasional.
What the engineer will check
- Log grid frequency; DNO liaison if frequent.
Who to ask for: Fronius-trained PV installer / Fronius Service Partner.
Certification: Installer liaison with the DNO; any change to grid-protection settings needs DNO agreement (G98/G99) and the manufacturer's installer/grid code.
What you might notice
Sources
- Fronius Primo 3.0-1 - 8.2-1 Operating Instructions (HTML) ↗ · 42,0410,2165 online edition · Reviewed 24 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 24 September 2026