BoilerFaultCodesAriston 112 Fault Code
The Ariston 112 fault code means: your boiler is having trouble moving water through the system properly, which has stopped it from heating up safely.. It appears on 1 Ariston model in our database.
Technical description: All Boilers
DIY fix possible
Check that your boiler pressure is between 1 and 1.5 bar on the displayEnsure all radiator valves and isolation valves under the boiler are fully openGently bleed your radiators to remove trapped airReset the boiler using the 'Reset' button on the touch screen
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Ariston models that show the 112 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Ariston 112 fault code information on this page is sourced and cross-checked against the official Ariston service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026