BoilerFaultCodesThe 6 most common faults
Your boiler has shut down because it has detected it is getting too hot, usually due to a lack of water flow or a circulation problem.
Check that your system pressure is between 1.0 and 1.5 barEnsure all radiator valves are fully openAllow the boiler to cool down and press the 'Reset' button
Your boiler has stopped working because the water pressure is too low for the system to run safely.
Locate the filling loop, which is usually a flexible silver hose with two small taps.Slowly open both taps to let fresh water into the system until the pressure gauge reads between 1.0 and 1.5 bar.Close both taps tightly and press the reset button on the boiler control panel.
Your boiler is struggling to move water around the system correctly, which is causing it to shut down to prevent overheating.
Check that your system pressure is between 1.0 and 1.5 barEnsure all radiator valves are fully openBleed your radiators to remove any trapped air pockets
Your boiler has failed to light because it either cannot get enough gas or cannot detect that the flame has started.
Check that your gas emergency control valve and any appliance isolation valves are fully open.If you have a pre-payment meter, ensure you have sufficient credit and the meter hasn't 'locked out'.Press the reset button on the fascia for five seconds to see if the boiler restarts.
Your boiler has detected that water is not circulating properly before the burner ignites, which may be caused by an air lock or a blockage.
Check that all radiator valves are fully openBleed your radiators to remove any trapped airEnsure the system pressure is between 1.0 and 1.5 bar on the gauge
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 completelyCheck all radiator valves are open and bleed any trapped air from your radiatorsCheck the system pressure gauge and top up to 1.5 bar if it is lowPress the reset button on the boiler control panel
on the Baxi Bermuda
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