- Error code
- 6427
- Category
- Self-diagnosis
- Manufacturer
- SMA
- Models
- Sunny Tripower (STP)
1What the error means
A code from the self-diagnosis group (6001–6438): the inverter detected an internal disturbance and stopped operating. 6427 usually concerns the power stage or the measurement inside the unit.
2Possible causes
- Fault in the power bridge or the drive circuits
- Faulty measuring circuit
- Thermal wear of components
3What to do
- One restart, with AC and DC switched off for 2–3 minutes.
- If it returns, the inverter needs 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.