527 High

Boiler Fault Code 527

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code 527 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 computer has been set up with the wrong configuration settings and does not know how to operate correctly. (As reported on Viessmann Vitodens 100-W B1GA)

Pick your boiler brand for the 527 fix

Viessmann 527 1 model

Source

Information for the 527 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