- Error code
- Vac-Srr
- Category
- Grid voltage
- Manufacturer
- SMA
- Models
- Sunny Boy (SB)
1What the error means
The grid voltage went out of range during operation and the inverter disconnected. It is usually an overvoltage: while feeding in, the inverter raises the voltage at the point of connection.
2Possible causes
- High grid voltage
- Undersized or very long AC cable
- Several inverters on the same line
3What to do
- Measure the voltage with the inverter feeding in.
- Check the cross-section and length of the AC cable.
- If the grid voltage is permanently high, notify the grid operator.
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.