BoilerFaultCodes E01-606 High
Boiler Fault Code E01-606
Also written as E01606 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code E01-606 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 that the internal fan responsible for safely venting exhaust gases is not spinning or operating correctly, causing the system to shut down for safety reasons. (As reported on Worcester Bosch 24i RSF)
Pick your boiler brand for the E01-606 fix
Source
Information for the E01-606 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