BoilerFaultCodes 0.8bar High
Boiler Fault Code 0.8bar
Also written as 08BAR — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 0.8bar 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 in your heating system has fallen too low for it to operate safely, so it has paused its functions to protect itself. (As reported on Heatline Capriz 24)
Pick your boiler brand for the 0.8bar fix
Source
Information for the 0.8bar 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