Below is an indicative list of the faults that can appear on Kostal inverters.
We always recommend consulting the user manual of your inverter.
| 106 | Neutral not connected |
| 150 | Frequency error |
| 151 – 164 | Grid error at start-up. |
| 165 – 178 | Frequency error |
| 240-241 | AC error |
| 250 | Grid voltage out of range |
| 251 – 278 | Grid problem |
| 279 – 292 | Incorrect phase interruption |
| 300 – 399 | Shutdown due to leakage current |
| 400 – 401 | PV Over Voltage |
| 601 – 615 | Overheating |
| 800 – 999 | Internal error |
If the red LED on your inverter lights up, there is a fault that needs to be repaired.
Contact us to have it repaired promptly.