BoilerFaultCodes Circulation High
Boiler Fault Code Circulation
Also written as CIRCULATION — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Circulation 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 has detected that hot water is not flowing through your heating system correctly, which is causing it to shut down to prevent overheating. (As reported on Potterton Suprima HE)
Pick your boiler brand for the Circulation fix
Source
Information for the Circulation 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