| Place | Meaning |
|---|---|
| P0 | Photovoltaic is in wait state |
| P1 | Photovoltaic is in operating condition |
| P2 | Photovoltaic is in a breakdown state |
| P3 | DC bus is breakdown |
| P4 | DC bus is occupied |
| P5 | DC bus is in free state (vacuum) |
| P6 | Inverter is in the wait state |
| P7 | Inverter is in the operating condition |
| P8 | Breakdown state of Inverter |
| P9 | Load is connected |
| P10 | Load is disconnected |