BoilerFaultCodesThe 6 most common faults
Your boiler has stopped working because the water inside has become too hot or is not circulating through the system correctly.
Check that your radiator valves are openEnsure there are no blockages or frozen pipes (if applicable)Reset the boiler by turning the mode knob to 'reset' and then back to the original setting
Your boiler has stopped working because it failed to light several times, often due to a lack of gas supply or a blocked pipe.
Check that your gas pre-payment meter (if you have one) has credit.Verify that other gas appliances in your home, like a stove, are working correctly.If it is freezing outside, check if your white plastic condensate pipe is frozen and thaw it with warm water.Once gas supply is confirmed, press the 'Reset' button on the boiler panel to restart the system.
Your boiler has stopped working because there is not enough water inside the system to operate safely.
Locate the filling loop (usually a silver flexible hose) underneath the boiler.Slowly open the one or two taps on the hose until you hear water flowing.Watch the pressure gauge and close the taps when the needle reaches between 1 and 1.5 bar.
Your boiler has lost its flame suddenly and has shut down as a safety precaution, meaning you will have no heating or hot water until it is fixed.
Check if other gas appliances, like your hob, are working to ensure your gas supply is active.Check your gas meter to ensure you have credit if you are on a pre-pay meter.During freezing weather, check that the white plastic pipe exiting the wall outside is not frozen or blocked.Press the 'Reset' button on the front control panel.
Your boiler has detected that it is heating up too quickly or isn't circulating water properly, causing it to shut down to prevent damage.
Check that your central heating valves (radiator valves) are openEnsure your boiler pressure is between 1 and 1.5 bar on the pressure gaugeReset the boiler by turning the mode dial to 'reset' and then back to the original setting
Your boiler has detected that the water is getting too hot too quickly, usually because the water isn't flowing through the system properly.
Check that all radiator valves are turned to the 'open' position.Ensure the blue-handled isolation valves under the boiler are fully open (aligned with the pipework).Check the boiler pressure is between 1.0 and 1.5 bar on the gauge.Restart the boiler using the reset button.
on the Ideal Esprit
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