“Ideal” boiler fault codes
- C0 – BCC Activation Fault.
- C2 – BCC Fault.
- F1 – Low Water Pressure.
- F2 – Flame Loss.
- F3 – Fan Fault.
- F4 – Flow Thermistor.
- F5 – Return Thermistor.
- F6 – Outside Sensor Failure.
- F7 – Low Mains Voltage.
- F9 – Unconfigured PCB.
- L1 – Flow Temperature Overheat or No Water Flow.
- L2 – Flame Loss.
- L5 – 5 Boiler Resets in 15 Minutes.
- L6 – False Flame Lockout.