BoilerFaultCodesThe 6 most common faults
Your boiler has sensed it is getting too hot and has shut itself down as a safety precaution.
Check that all radiator valves (TRVs) are fully open to allow water to flow.Ensure there is enough water pressure in the system by checking the gauge is between 1 and 1.5 bar.Reset the boiler by turning the control knob to the 'Reset' position and holding for 2 seconds.
Your boiler has tried to light several times but cannot establish a flame, meaning your heating and hot water will not work.
Check if your gas supply is active (e.g., check if a gas hob lights or if your prepay meter has credit).Check if the condensate pipe (the plastic pipe running outside) is frozen or blocked.Reset the boiler by pressing the 'RE' button or turning the dial to reset for 2 seconds.
Your boiler has detected that there is not enough water in the system to operate safely, causing it to shut down temporarily.
Locate the filling loop (usually a silver flexible hose with one or two small black taps) underneath the boiler.Slowly open the tap(s) until you hear water entering the system.Watch the pressure gauge and close the taps firmly once the needle reaches between 1 and 1.5 bar.Reset the boiler by pressing the 'Restart' button.
Your boiler has started to ignite but the flame has gone out, meaning the system has shut down for safety and you will not have any heating or hot water.
Check if other gas appliances in your home (like a hob) are working to ensure gas is being suppliedCheck that your gas pre-payment meter (if you have one) has sufficient creditPress the Reset button on the front of the boiler display panel
Your boiler is failing to stay lit, which means the system cannot get the heat it needs to provide you with hot water or warming for your radiators.
Check if other gas appliances, like a cooker, are working to ensure gas is reaching the propertyIf it is freezing outside, check that the white plastic condensate pipe leading outdoors is not frozenPress and hold the 'Restart' button for two seconds to attempt a reset
Your boiler is struggling to keep its flame lit, which means the system has safely shut down to prevent unburnt gas from building up.
Check if other gas appliances, like a cooker, are working to confirm your gas supply is active.If you have a prepaid gas meter, check that you have sufficient credit.Press the Reset button once to see if the boiler restarts normally.
on the Ideal Instinct2 24
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