- Error code
- OS 11
- Category
- Power limitation
- Manufacturer
- KACO
1What the error means
Power limitation: the generator power is higher than the inverter can deliver, so it is limited to its maximum value. Usually happens at midday on an oversized installation.
On the display or in the monitoring software it appears as OS 11.
2Possible causes
- High grid voltage or frequency
- High temperature
- Curtailment command from the grid operator
3What to do
- This is not a fault — the inverter is protecting itself and the grid.
- If the limitation is permanent, check the grid voltage, the ventilation and the power settings.
4Repair by Aineas
You send the inverter to our lab in Thessaloniki. We diagnose it, inform you of the fault and the cost, and the repair starts only after you approve it. Every inverter is tested under simulated operating conditions before delivery.