Pressure 3 or greater Emergency
Boiler Fault Code Pressure 3 or greater
Also written as PRESSURE3ORGREATER — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Pressure 3 or greater 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's internal water pressure has reached a dangerous level, causing a safety valve to activate to prevent damage. (As reported on Baxi Solo 3 PFL)
Pick your boiler brand for the Pressure 3 or greater fix
Source
Information for the Pressure 3 or greater 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