BoilerFaultCodesThe 6 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 started to light but the flame has gone out, meaning the system has shut down for safety and cannot provide heat or hot water.
Check if other gas appliances (like a hob) are working to ensure gas is reaching your home.If it is winter, check that your external condensate pipe is not frozen.Press and hold the reset button for five seconds to attempt a restart.
Your boiler has detected that water is getting too hot too quickly, which usually means the water isn't flowing through the system properly.
Check that the flow and return isolation valves underneath the boiler are fully openEnsure all radiator valves (TRVs) are turned to their highest settingCheck the boiler pressure is between 1 and 1.5 bar on the gaugeRestart the boiler using the reset button
Your boiler has failed to stay lit, which means it has stopped providing heating and hot water for safety reasons.
Check if other gas appliances in your home, like a hob, are working to confirm your gas supply is active.If it is freezing outside, check if your condensate pipe (the plastic pipe leading outside) is frozen and thaw it with warm water.Press the reset button on the boiler control panel for two seconds.
on 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