06 High
Boiler Fault Code 06
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 06 appears across 8 boiler brands and 78 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler's electronic control board has lost its configuration settings or has been set up incorrectly, preventing the system from operating. (As reported on Vokera Synergy E)
Pick your boiler brand for the 06 fix
Source
Information for the 06 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 27 April 2026