Pressure fall below 0.5 BAR High
Boiler Fault Code Pressure fall below 0.5 BAR
Also written as PRESSUREFALLBELOW05BAR — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Pressure fall below 0.5 BAR appears across 1 boiler brand and 2 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 that the water pressure is too low to operate safely and has switched itself off to prevent damage. (As reported on Vokera Mynute 10E)
Pick your boiler brand for the Pressure fall below 0.5 BAR fix
Source
Information for the Pressure fall below 0.5 BAR 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