BoilerFaultCodesThe 6 most common faults
Your boiler has shut down because it has become too hot or there is not enough water moving through the system to keep it cool.
Check that your home's radiator valves are fully openEnsure the boiler pressure gauge is between 1 and 1.5 barPress the reset button once the boiler has cooled down
Your boiler has tried to light several times but cannot start safely, so it has locked itself out to prevent damage.
Check that your gas prepayment meter has credit and that the gas emergency control valve is open.Check if other gas appliances in your home, such as a hob, are working correctly.Press the 'Reset' button on the front of the boiler control panel for two seconds.
Your boiler thinks it sees a flame even though it isn't supposed to be running, causing it to shut down for safety.
Press the 'Reset' button on the front of the control panel.Check if the condensate pipe (outside white plastic pipe) is frozen and defrost it with warm water if necessary.Ensure there are no signs of water leaking onto the boiler from above.
Your boiler has switched itself off because the water pressure inside the system has dropped too low to operate safely.
Locate the filling loop (a flexible silver hose) underneath your boiler.Slowly open both taps on the filling loop until you hear water flowing.Watch the pressure gauge and close the taps when it reaches between 1 and 1.5 bar.
Your boiler is failing to stay lit or cannot detect its own flame, meaning it has shut down for safety and will not provide heating or hot water.
Check if other gas appliances in your home, such as a hob, are working to ensure gas supply is active.If it is freezing outside, check if the plastic condensate pipe leading outdoors is frozen and thaw it with warm water.Press the reset button on the front of the boiler once to see if the system restarts.
Your boiler has detected that the water is getting too hot too quickly, usually because it cannot circulate through your pipes and radiators properly.
Check that the blue and red lever valves underneath the boiler are fully turned to the open positionEnsure all radiator valves (TRVs) are turned up to a high settingCheck that the boiler pressure gauge is between 1 and 1.5 barRestart the boiler using the reset button
on the Ideal Compact HE
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