BoilerFaultCodes EE6 High
Boiler Fault Code EE6
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code EE6 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 issue with the external valve system, preventing it from operating correctly and resulting in a total loss of heating and hot water. (As reported on Worcester Bosch WR325 RSF)
Pick your boiler brand for the EE6 fix
Source
Information for the EE6 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