6613 on a SMA Solar Technology AG Sunny Island 4.4M / 6.0H / 8.0H: Power of the loads is too high for the Sunny Island
Short answer
On a SMA Solar Technology AG inverter, 6613 means: Power of the loads is too high for the Sunny Island. 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 of the loads is too high for the Sunny Island.
Part involved: Sunny Island battery inverter.
When it shows: Power of the loads is too high for the Sunny Island.
Likely causes:
- Clean fans and restart; check for short circuits; ensure loads do not exceed inverter power; soft-start large motor loads.
Is it safe?
| Does the inverter stop? | Partly |
|---|---|
| Engineer needed? | Yes |
The inverter keeps running with some functions stopped.
Resetting itself: unknown.
Manual reset: Autostart after malfunction (limited number of attempts, then 10-minute wait) per SMA 14.1; some errors must be acknowledged via the user interface.
What you can check
- Read the event in the Sunny Island web interface / Sunny Portal and note it for your installer.
- Switch off or stagger large appliances running on the backup/off-grid supply (e.g. kettle, oven, pumps), then see if the system recovers.
What the engineer will check
- Check load profile vs Sunny Island rating, battery bank voltage/charge, temperature sensor wiring, fans; parameter changes via installer login.
Who to ask for: Battery / off-grid installer (SMA Sunny Island trained).
Certification: Qualified electrician competent in battery energy storage (IET Code of Practice for Electrical Energy Storage Systems); manufacturer-trained installer.
What you might notice
Sources
- Operating manual SUNNY ISLAND 4.4M/6.0H/8.0H ↗ · SI44M-80H-13-BE-en-15 Version 1.5 · page 150 · Reviewed 24 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 24 September 2026