- Error code
- FS 49
- Category
- Grid overfrequency
- Manufacturer
- KACO
1What the error means
The grid frequency is too high. Usually due to the grid and not the device.
On the display or in the monitoring software it appears as FS 49.
2Possible causes
- Grid frequency instability
- Operation on a generator or a weak grid
- Wrong country setting
3What to do
- Check the country setting and the frequency limits in the parameters.
- Note whether it coincides with specific hours or with generator operation.
- If the grid is stable and the fault persists, check the measuring circuit.
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.