BoilerFaultCodesThe 6 most common faults
Your boiler's burner has shut itself down for safety and requires a manual restart to try and restore heating and hot water.
Locate the red reset button on the burner itself (behind the front casing)Press the reset button once to see if the burner fires upCheck that you have enough oil in your storage tank
Your boiler has reached an unsafe temperature and has automatically shut down to prevent damage.
Wait for the boiler to cool down completely (at least 20-30 minutes).Ensure all radiator valves are fully open and there are no blockages in the system.Locate the manual reset button (usually under a black screw cap) and press it firmly.
Your boiler has stopped running as a safety precaution because it couldn't successfully light or maintain a flame.
Check that you have enough heating oil in your tank.Ensure the oil supply valve is fully open.Press the illuminated reset button on the burner control box once.
Your boiler has stopped running because it has locked itself out, usually because it can't draw enough oil or light the flame.
Check that you have enough oil in your storage tankEnsure the oil supply valve is fully openPress the illuminated reset button on the burner once
Your boiler's internal temperature sensor is reporting an error, which means the system cannot monitor its own heat levels and has shut down as a precaution.
Full guide for e1Your boiler has detected a problem with the sensor that monitors the temperature of the exhaust gases, causing the system to shut down for safety.
Full guide for e2on the Firebird Envirogreen
Based on parts cited in our fault code database. Your engineer will confirm what's actually needed after diagnosis.
Call a Gas Safe engineer if…
- You can smell gas or see signs of a leak
- The Firebird shows an Emergency or High severity code
- The boiler keeps locking out after repeated resets
- You've tried the DIY checks and the fault hasn't cleared
- There's visible water leaking from the boiler
- The flame is yellow or orange instead of blue