395 High

Boiler Fault Code 395

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code 395 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 has detected an internal electrical fault that is preventing it from lighting the burner safely. (As reported on Viessmann Vitodens 100-W B1GA)

Pick your boiler brand for the 395 fix

Viessmann 395 1 model

Source

Information for the 395 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