BoilerFaultCodesThe 6 most common faults
Your boiler has got too hot and has shut itself down for safety, meaning you have no heating or hot water until the system cools and is reset.
Check that all radiator valves are fully open to allow water to circulate.Ensure there is enough water in the system by checking the pressure gauge is between 1 and 1.5 bar; top up if necessary.Once the boiler has cooled, press and hold the 'Mode/Reset' button for 3 seconds to clear the lockout.
Your boiler has tried to light several times but cannot establish a flame, meaning it has shut down for safety.
Check that your gas emergency control valve is in the 'on' position.If you have a prepayment gas meter, check that you have sufficient credit.Press and hold the 'Reset' button for two seconds to see if the boiler restarts.
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 two blue-handled valves or a braided hose) underneath the boiler.Slowly open both taps until you hear water entering the system.Watch the pressure gauge and close both taps tightly once the needle reaches 1.5 bar.Press the 'Reset' button on the front of the boiler to restart it.
Your boiler has started to light but the flame has gone out unexpectedly, often because the gas supply is interrupted or a sensor cannot detect the fire.
Check that your gas emergency control valve is open and you have credit on your gas meter.Check if other gas appliances, like a cooker, are working to confirm gas supply.Reset the boiler by turning the mode knob to the 'RESET' position and holding for two seconds.
Your boiler has detected that the water is getting too hot too quickly, likely because it is not circulating through the system properly.
Check that all radiator valves are fully openEnsure the boiler pressure is between 1 and 1.5 bar on the gaugeBleed all radiators to remove trapped air that could block water flow
Your boiler has shut down because it is getting too hot too quickly, usually because the water isn't flowing through the system as it should.
Check that all radiator valves (TRVs) are fully open to allow water to circulate.Ensure your boiler pressure is between 1.0 and 1.5 bar on the gauge.Reset the boiler using the control knob or reset button.
on the Ideal i-mini2 C24
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
Avoid the next call-out bill
Monthly cover means no unexpected bills when your boiler breaks down.
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