Firebird Heating Solutions is an Irish manufacturer producing oil-fired and gas-fired condensing boilers. Popular in rural UK and Ireland where mains gas is not available, Firebird boilers are known for robust construction and high efficiency.
Firebird Boiler Fault Codes
All Firebird Fault Codes 20
| Code | Fault | Severity | Type | View guide |
|---|---|---|---|---|
| L1 | Ignition Lockout The burner has failed to ignite and the boiler has locked out. | High | Engineer | View Guide |
| L10 | PCB Fault The main PCB has an internal error. | High | Engineer | View Guide |
| L11 | APS Fault Air pressure switch not confirming airflow. | High | Engineer | View Guide |
| L12 | DHW Sensor Fault Hot water NTC sensor faulty. | Medium | Engineer | View Guide |
| L13 | Diverter Valve Fault Valve stuck. | Medium | Engineer | View Guide |
| L14 | Gas Valve Fault Gas valve not responding. | High | Engineer | View Guide |
| L15 | Combustion Fault Combustion quality outside limits. | High | Engineer | View Guide |
| L16 | PCB Communication Error Internal PCB fault. | High | Engineer | View Guide |
| L17 | Pressure Sensor Fault Sensor giving incorrect readings. | Medium | Engineer | View Guide |
| L18 | Rapid Temperature Rise Flow temp rising too fast. | High | Engineer | View Guide |
| L19 | Frost Protection Frost protection running. | Medium | DIY Check | View Guide |
| L2 | Flame Failure During Operation The flame was established but has been lost. | High | Engineer | View Guide |
| L20 | eBUS Fault Communication fault. | Medium | Engineer | View Guide |
| L3 | Overheat Lockout The boiler has exceeded its safe temperature and locked out. | High | Engineer | View Guide |
| L4 | Low Water Pressure System water pressure is below the minimum. | Low | DIY Check | View Guide |
| L5 | Return Sensor Fault The return NTC temperature sensor has a fault. | Medium | Engineer | View Guide |
| L6 | Flow Sensor Fault The flow NTC temperature sensor has a fault. | Medium | Engineer | View Guide |
| L7 | Pump Fault The circulation pump is not running or is blocked. | High | Engineer | View Guide |
| L8 | Fan Fault The fan is not running correctly. | High | Engineer | View Guide |
| L9 | Condensate Blocked The condensate drain is blocked or frozen. | Medium | DIY Check | View Guide |