BoilerFaultCodesThe 5 most common faults
Your boiler has shut down because it has become too hot or water is not circulating through the system correctly.
Check that all radiator valves are fully openEnsure your boiler pressure is between 1.0 and 1.5 barPress the reset button on the front of the boiler
Your boiler has tried to light several times but failed, so it has shut itself down for safety.
Check that your gas pre-pay meter has credit (if applicable)Check that other gas appliances like your hob are working to ensure gas is reaching the propertyPress the Reset button or turn the control knob to 'Reset' then back to 'On/Service'
Your boiler has detected that the water pressure is too low for it to operate safely, which is usually a simple matter of the system needing a top-up.
Locate the filling loop, which is usually a flexible silver hose with small lever valves under the boiler.Slowly open both lever valves until you hear water flowing and watch the pressure gauge.Close both valves tightly once the pressure gauge reaches between 1 and 1.5 bar.
Your boiler has stopped working because the water pressure inside the system is too low to operate safely.
Switch off the boiler and allow the system to cool down completely.Locate the filling loop (the flexible silver hose) underneath the boiler.Open the small valve handles slowly until you hear water flowing and the gauge reaches 1.0 - 1.5 bar.Close the valves tightly and restart the boiler.
Your boiler has detected that the water is flowing in the wrong direction through the pipes, or there is an issue with the temperature sensors.
Full guide for FAon the Ideal Sprint
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 Ideal 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