| Napoleon Error Code | What this means |
|---|---|
| LED always on in any colour | Fault with the control hardware |
| One or six red flashes | High limit problem |
| Two, three, or seven red flashes | Problem with the pressure switch |
| Four red flashes | Failed ignition attempts |
| Five red flashes | Problem with the polarity |
| Eight red flashes | The flame is dropping |
| Seven LED flashes | Faulty flame sensor. |
| Ten LED flashes | The flame is present when there's no gas |