Solar · Error codes · Fronius International GmbH
710Fronius International GmbH · Fronius SnapINverter (Primo, Symo, Eco, Symo Hybrid)
710 on a Fronius International GmbH Fronius SnapINverter: Solar Net - Keep alive signal missing
Short answer
On a Fronius International GmbH inverter, 710 means: Solar Net - Keep alive signal missing. The inverter keeps running. An engineer is needed to fix the cause.
Reviewed 24 September 2026 · 1 source
What it means
The manual says: Solar Net - Keep alive signal missing.
Part involved: Solar Net / Datamanager.
When it shows: Class 7 status code.
Likely causes:
- Check Solar Net status at inverter; run latest software update (inverter and Datamanager).
Is it safe?
| Does the inverter stop? | No |
|---|---|
| Severity | Warning |
| Engineer needed? | Yes |
The inverter keeps running.
Resetting itself: no.
Manual reset: See engineer checks.
What you can check
- Read the state code on the inverter display or in Fronius Solar.web and note date/time for your installer.
- Check your router/Wi-Fi and that Solar.web shows the system online.
What the engineer will check
- Check Solar Net cabling/termination, Datamanager, firmware.
Who to ask for: Fronius-trained PV installer / Fronius Service Partner.
Certification: Qualified electrician (BS 7671; MCS-certified PV installer for work on the PV array/DC side).
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