BoilerFaultCodesThe 6 most common faults
Your boiler has failed to light or maintain a flame, meaning it cannot heat your water or radiators for safety reasons.
Check if other gas appliances in your home, such as a hob, are working to ensure gas supply existsCheck if your gas meter has credit if you use a pre-payment systemPress the reset button once to see if the boiler restarts
Your boiler has likely overheated, causing a safety sensor to automatically shut the system down to prevent damage.
Allow the boiler to cool down completely for 30 minutesCheck that your radiator valves are open and not blocked by furnitureLocate the reset button on the control panel and press it firmly
Your boiler has detected that water is either not moving through the system properly or there is not enough pressure for it to operate safely.
Check the pressure gauge on the front of the boiler; it should be between 1 and 1.5 bar.If the pressure is too low, use the filling loop underneath the boiler to carefully top it up.Ensure all radiator valves are open and that the pump has not become stuck after a long period of inactivity.
Your boiler tried to light the gas but failed, so it has locked itself out for safety.
Check if other gas appliances in your home (like a hob) are working to ensure gas is reaching the property.Ensure your prepaid gas meter has credit if applicable.Turn the selector switch to the 'R' (Reset) position for at least 5 seconds, then release it back to the 'On' position.
Your boiler has become too hot and has shut itself down as a safety precaution to prevent damage.
Check that your radiator valves are open and not turned to offTurn the selector switch to the 'R' (Reset) position for five seconds, then turn it back to your desired settingEnsure there is enough water pressure in the system by checking the pressure gauge
Your boiler has failed to light or cannot detect that a flame has started, meaning your heating and hot water will not work.
Check if other gas appliances, like a hob, are working to ensure gas is reaching the property.Ensure your gas pre-payment meter (if applicable) has credit.Press the reset button on the front control panel to see if the boiler restarts.
on the Baxi Bahama 80e / 105e
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