- Error code
- Imax/overcurrent
- Category
- Overcurrent
- Manufacturer
- SMA
- Models
- Sunny Boy (SB)
1What the error means
The current exceeded the maximum permitted limit, on the DC input or the AC output. The inverter stops to protect the power bridge.
2Possible causes
- Short circuit or sudden change on the grid
- Incorrect string sizing
- Fault in the power stage
3What to do
- Check the PV generator — current per string — and the AC connection.
- If it returns with no external cause, the power stage 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.