- Error code
- 028
- Category
- Installation problem
- Manufacturer
- SUNGROW
1What the error means
PV1 reverse connection (PV1 Reverse Connection): the polarity of the first string is reversed. The inverter does not start until this is corrected.
2Possible causes
- Wiring error
- Incorrect sizing
- Wrong input configuration
3What to do
- Check the wiring against the manual.
- The correction must be done by a licensed technician.
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.