- Error code
- Interferrence
- Category
- Internal fault
- Manufacturer
- SMA
- Models
- Sunny Boy (SB)
1What the error means
The inverter detected an internal disturbance in its circuits. It is the general internal fault indication on the Sunny Boy.
2Possible causes
- Fault on the power or control board
- Worn capacitors
- Damage from overvoltage
3What to do
- One restart with AC and DC switched off.
- If it returns, the inverter needs diagnosis and repair in our lab.
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.