BoilerFaultCodes E00.05 Medium
Boiler Fault Code E00.05
Also written as E0005 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code E00.05 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 water temperature sensor on the return pipe is not providing a valid signal, preventing the system from heating correctly. (As reported on Remeha Quinta Ace 30)
Pick your boiler brand for the E00.05 fix
Source
Information for the E00.05 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