Boiler stand-by Low

Boiler Fault Code Boiler stand-by

Also written as BOILERSTANDBY — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code Boiler stand-by appears across 1 boiler brand and 5 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is currently in standby mode and is working exactly as it should, waiting for a signal from your thermostat or hot water tap to start heating. (As reported on Vokera Easi-Heat Plus)

Pick your boiler brand for the Boiler stand-by fix

Vokera Boiler stand-by 5 models

Source

Information for the Boiler stand-by 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