Boiler Fault Code Err / 110

Also written as ERR110 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026

Fault code Err / 110 appears across 1 boiler brand and 1 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has detected that the water temperature inside it has risen too high and has shut itself down to prevent damage. (As reported on Ariston HS Premium)