BoilerFaultCodes 918 High
Boiler Fault Code 918
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 918 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 is unable to move water around your heating system because the internal pump is stuck or the valves that let water flow to your radiators are shut. (As reported on Vokera Eclipse)
Pick your boiler brand for the 918 fix
Source
Information for the 918 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 7 July 2026