BoilerFaultCodes E01-605 High
Boiler Fault Code E01-605
Also written as E01605 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code E01-605 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 is struggling to detect or control the flow of hot water, which likely means you will have no hot water coming out of your taps or shower. (As reported on Worcester Bosch 24i RSF)
Pick your boiler brand for the E01-605 fix
Source
Information for the E01-605 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