BoilerFaultCodesThe 6 most common faults
Your boiler is overheating because the water inside it is not moving around the system correctly.
Check that all radiator valves are fully openCheck if the water pressure on the system gauge has dropped too lowEnsure there is no trapped air by bleeding your radiators
Your boiler has become too hot and has shut down as a safety precaution to prevent damage.
Turn off the boiler and allow it to cool down completely.Bleed all radiators using a radiator key to remove trapped air.Check that your system pressure is at the correct level (usually 1.0 to 1.5 bar).Press the reset button on the boiler control panel.
Your boiler has detected that it is getting too hot or that water isn't moving through the system properly, causing it to shut down for safety.
Check that all radiator valves are openEnsure your system pressure is between 1 and 1.5 barPress the reset button once the boiler has cooled down
Your boiler has become too hot and has automatically shut down to prevent damage.
Wait 30 minutes for the boiler to cool down fully.Ensure all radiator valves are fully open and there are no obstructions to airflow.Press the 'Reset' button on the front control panel firmly to restart the unit.
Your boiler is failing to light the gas flame after several attempts, which means it will stay locked out to keep you safe.
Check if your gas supply is active by testing another gas appliance like a hobPress and hold the reset button for at least five secondsEnsure your system pressure is at the correct level if a gauge is visible
Your boiler's electronic control board is struggling to communicate with the valve that controls the gas supply, meaning it cannot ignite safely.
Full guide for E15on the Baxi Suprima 60
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 Baxi 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