- Error code
- FS 48
- Category
- Grid underfrequency
- Manufacturer
- KACO
1What the error means
The grid frequency is too low. The manual notes that this is usually due to the grid and not the inverter.
On the display or in the monitoring software it appears as FS 48.
2Possible causes
- Grid frequency drop
- Weak grid or operation on a generator
- Wrong country setting
3What to do
- Check the country setting and the frequency limits.
- If it appears constantly on a stable grid, 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.