BoilerFaultCodes 2.5 bar or above Emergency
Boiler Fault Code 2.5 bar or above
Also written as 25BARORABOVE — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 2.5 bar or above 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 pressure is too high, which puts unnecessary stress on the internal system components. (As reported on Glow-worm 23c)
Pick your boiler brand for the 2.5 bar or above fix
Source
Information for the 2.5 bar or above 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