457 High

Boiler Fault Code 457

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code 457 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 The fan that helps your boiler run safely is having trouble spinning or is stuck, which has caused your heating to stop working for safety reasons. (As reported on Viessmann Vitodens 100-W B1GA)

Pick your boiler brand for the 457 fix

Viessmann 457 1 model

Source

Information for the 457 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