BoilerFaultCodes 471 High
Boiler Fault Code 471
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 471 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's internal sensor for measuring water pressure has lost electrical contact or is faulty, causing the system to stop working until it can safely read the pressure level again. (As reported on Viessmann Vitodens 100-W B1GA)
Pick your boiler brand for the 471 fix
Source
Information for the 471 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