BoilerFaultCodes i10 High
Boiler Fault Code i10
Also written as I10 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code i10 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 is temporarily shutting down because it has detected that the internal water temperature has become dangerously high. (As reported on Worcester Bosch Greenstar Heatslave II)
Pick your boiler brand for the i10 fix
Source
Information for the i10 fault code is sourced from the official service / installation manual for each model that displays it. Read more about how we source fault codes →
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026