Boiler Fault Code 2.7bar

Also written as 27BAR — same fault.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026

Fault code 2.7bar appears across 2 boiler brands and 7 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has too much water inside it, which has caused the pressure to rise to a level where the system may shut down or leak to protect itself. (As reported on Glow-worm Ci Plus)