Ferroli Fault Codes
Searchable list
Boilers covered:
- Ferroli Arena
- Ferroli Bluehelix HiTech RRT
- Ferroli Bluehelix Tech RRT
- Ferroli DOMIcompact
- Ferroli DOMIcondens
- Ferroli Domina
- Ferroli Extrema
- Ferroli FERcondens
- Ferroli FER System Tech
- Ferroli FER Tech
- Ferroli F-series
- Ferroli i25 / i29
- Ferroli Maxima
- Ferroli Modena
- Ferroli Optimax
- Ferroli Sigma
- Ferroli T-One
Note: Low-pressure code (F37) is often user-fixable. Most others require a Gas Safe engineer.
Modern Codes (A/F series)
| Error code | Possible fault | If ticked try the troubleshooter |
|---|---|---|
| A01 | No burner ignition / ignition failure | ✓ |
| A02 | Flame signal present with burner off / electrode or PCB error | ✕ |
| A03 | Overtemperature protection / heating sensor damaged / no circulation | ✕ |
| A04 | Flue gas fault (F07 repeated) | ✕ |
| A05 | Fan error / tachometer signal interrupted | ✕ |
| A06 | No flame after ignition phase / ionisation electrode fault | ✓ |
| A07 | High flue gas temperature | ✕ |
| A09 | Gas valve fault / wiring disconnected | ✕ |
| A15 | F05 fault repeated multiple times / air pressure switch fault | ✕ |
| A16 | Gas valve fault | ✕ |
| A23 / A24 | Card parameter error | ✕ |
| A41 | Flow sensor disconnected / positioning error | ✕ |
| A42 | Flow sensor damaged | ✕ |
| F04 | Wrong card parameter setting / flue thermostat | ✕ |
| F05 | Air pressure switch contact error / fan fault | ✕ |
| F07 | Air pressure switch error / high flue temperature | ✕ |
| F10 | Delivery/flow sensor fault | ✕ |
| F11 | DHW sensor fault | ✕ |
| F13 | Exchanger probe error | ✕ |
| F14 | Flow sensor error | ✕ |
| F34 | Supply voltage too low | ✕ |
| F35 | Faulty mains frequency | ✕ |
| F37 | Low system water pressure | ✓ |
| F39 | External sensor fault | ✕ |
| F43 | Exchanger protection intervention / no circulation | ✓ |
| F50 / F51 | Controller internal error | ✕ |
| FH | Flue gas sensor fault | ✕ |