BoilerFaultCodesThe 6 most common faults
Your boiler's burner has shut down for safety because it failed to light or stay lit correctly.
Check if you have run out of heating oil in your storage tank.Ensure the oil supply valve is fully open.Press the manual reset button on the burner control box once (do not repeat if it fails).
Your boiler's burner has stopped working and has gone into a safety shutdown mode to prevent further damage.
Check that your external oil tank has plenty of fuel.Ensure the oil supply valve is fully open.Press the illuminated red reset button on the burner once to restart it.
Your boiler has automatically shut down because the water inside has become far too hot, acting as a safety precaution to prevent damage.
Check that all your radiator valves are open and not turned to the off position.Inspect the system pressure gauge and top up the water if it is below 1 bar.Wait for the boiler to cool down completely and firmly press the manual reset button located under the control panel cover.
Your boiler has become too hot and has automatically shut itself down as a safety precaution.
Allow the boiler to cool down completely for at least 20 minutes.Locate the manual reset button situated at the rear of the electrical control panel.Press the button firmly until you hear a click to reset the safety thermostat.Ensure your radiator valves are open and the system pressure is correct before restarting.
Your boiler's internal temperature sensor has stopped communicating correctly, preventing the system from heating up as a safety precaution.
Full guide for E1Your boiler has detected an issue 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 Enviro Combi 26
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