| Boiler | Error / Fault Code | Fault Description |
|---|
| Combi and System |
003 |
Ignition failure – manual reset needed |
| Comb and System |
004 |
False flame error – the boiler will auto-reset |
| Combi and System |
012 |
Flame loss – reset the boiler |
| Combi and System |
016 |
Heat exchanger overheated – try manually resetting the boiler |
| Combi and System |
030 |
Abnormal exhaust temperature – try manually resetting the boiler |
| Combi and System |
046 |
Abnormal operation: Heat exchanger overheating – the boiler should auto-reset |
| Combi and System |
047 |
Abnormal operation: Exhaust thermostat error – a manual reset is needed if it the boiler doesn’t auto-reset |
| Combi and System |
060 |
Abnormal operation: Dual venturi limit switch – boiler will auto-reset |
| Combi and System |
109 |
Abnormal operation: Fan error – the boiler needs resetting |
| Combi and System |
110 |
Exhaust blockage (condensate blockage) – reset the boiler |
| Combi and System |
127 |
Abnormal operation: Air pressure switch (APS) issue – reset the boiler |
| Combi and System |
205 |
Heating supply thermistor open or short circuit – boiler should auto-reset |
| Combi and System |
218 |
Alarm error: Heating return thermistor open or short circuit |
| Combi and System |
302 |
Low water pressure – boiler should auto-reset |
| Combi and System |
352 |
High water pressure – boiler should auto-reset |
| Combi and System |
353 |
Abnormal operation: Water pressure sensor error – boiler should auto-reset |
| System |
407 |
Abnormal operation: Hot water outlet thermistor – alarm error |
| System |
421 |
Abnormal operation: Cold water inlet thermistor Auto reset should automatically occur |
| Combi and System |
480 |
Abnormal operation: External domestic hot water (DHW) tank outlet thermistor – alarm error |
| Combi and System |
515 |
Abnormal operation: Relay feedback (PCB) – the boiler needs to be reset |
| Combi and System |
517 |
Abnormal operation: Dual in-line package (DIP) switch setting (PCB) – boiler needs to be reset |
| Combi and System |
594 |
Abnormal operation: EEPROM (PCB) – contact an engineer |
| Combi and System |
615 |
Abnormal operation: Input and memory (MCU) – try resetting the boiler |
| Combi and System |
740 |
Abnormal operation: Outdoor temperature sensor – boiler should automatically reset |
| Combi and System |
782 |
Abnormal operation: Main panel communication – boiler should auto-reset |
