BoilerFaultCodesThe 6 most common faults
Your boiler has shut down because it has detected it is getting too hot or that water is not moving through the system properly.
Check that your system pressure is between 1 and 1.5 barEnsure all radiator valves and the boiler isolation valves are fully openBleed your radiators to remove any trapped air pocketsReset the boiler using the control knob or reset button
Your boiler has tried to light several times but failed, so it has shut itself down for safety.
Check if your gas supply is active (e.g., check other gas appliances or your meter credit)Locate the reset button on the control panelPress and hold the reset button for 2 seconds
Your boiler has stopped working because there isn't enough water pressure in the system to operate safely.
Locate the filling loop (usually a silver braided hose with small valves under the boiler).Open both valves slowly until you hear water flowing and the pressure gauge reaches between 1 and 1.5 bar.Close both valves tightly and restart the boiler using the reset button.
Your boiler has failed to light or has lost its flame while running, meaning it cannot heat your home or water.
Check if your home has a gas supply by testing another gas appliance like a hob.Verify that your gas meter has credit if you use a pre-payment meter.Press the reset button on the boiler control panel.
Your boiler has shut down because it is getting too hot too quickly, likely because water isn't circulating through the system properly.
Check that all radiator valves are turned onEnsure the large lever valves directly underneath the boiler are in the 'open' position (aligned with the pipe)Check if your pump is running or if its speed setting has been accidentally lowered
Your boiler has started to light but the flame has gone out unexpectedly, meaning it has shut down for safety.
Check if other gas appliances, like a hob, are working to ensure gas supply is activeCheck your gas meter credit if you have a prepayment meterPress the reset button once to see if the boiler restarts
on the Ideal Concorde
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