BoilerFaultCodes 88 High
Boiler Fault Code 88
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 88 appears across 2 boiler brands and 7 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 a problem with the internal mechanism that controls the gas flow, meaning it has safely shut itself down to prevent ignition. (As reported on Alpha Intec2 25 28XE)
Pick your boiler brand for the 88 fix
Source
Information for the 88 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 7 July 2026