BoilerFaultCodesThe 6 most common faults
Your boiler has become too hot and has shut itself down as a safety precaution to prevent internal damage.
Check that all radiator valves are fully open to allow water to circulate.Ensure your system pressure is between 1 and 1.5 bar on the pressure gauge.Press the Reset button on the front control panel and wait for the boiler to restart.
Your boiler is struggling to move water around the system properly, causing it to shut down to prevent overheating.
Check that all radiator valves (TRVs) are turned to the highest settingEnsure your boiler pressure is between 1 and 1.5 bar on the gaugeTry bleeding your radiators to remove any trapped air pockets
Your boiler is struggling to move water through the system efficiently, which usually means the water pressure is too low or something is blocking the flow.
Check the pressure gauge on the front of the boiler; it should be between 1 and 1.5 bar.If pressure is low, use the filling loop underneath the boiler to top it up.Ensure all radiator valves are fully open and bleed any radiators that have trapped air.
Your boiler has stopped working because water is not moving through the system quickly enough to prevent it from getting too hot.
Check that your radiator valves are fully openEnsure your boiler pressure is between 1 and 1.5 barGently bleed your radiators to remove trapped air
Your boiler is struggling to move water through the system, which is causing it to shut down to prevent overheating.
Check that all radiator valves are fully openEnsure your boiler pressure is between 1.0 and 1.5 barGently bleed your radiators to remove any trapped air
Your boiler is struggling to move hot water around the system, often caused by trapped air or low pressure preventing it from flowing correctly.
Check the pressure gauge and top up to 1.5 bar if it is lowBleed all radiators to remove any trapped air pocketsEnsure all radiator valves and the boiler isolation valves are fully open
on the Ariston E-Combi One 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 Ariston 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