- Error code
- Fac-Bfr
- Category
- Grid frequency
- Manufacturer
- SMA
- Models
- Sunny Boy (SB)
1What the error means
The grid frequency was out of range before connection. The Sunny Boy waits for the frequency to stabilise before connecting to the grid.
2Possible causes
- Unstable grid
- Wrong country setting
- Fault in the frequency measurement
3What to do
- Check the country setting.
- If the grid is stable and the fault persists, the measuring circuit needs to be checked.
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.