BoilerFaultCodes 8.0 High
Boiler Fault Code 8.0
Also written as 80 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 8.0 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 struggling to maintain the correct gas pressure required to heat your home properly, which means it will stop working until it is adjusted. (As reported on Glow-worm Betacom C)
Pick your boiler brand for the 8.0 fix
Source
Information for the 8.0 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