BoilerFaultCodes E1-71 High
Boiler Fault Code E1-71
Also written as E171 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code E1-71 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 experienced a fundamental electronic control failure that has caused it to lock down for safety. (As reported on Daikin D2CND)
Pick your boiler brand for the E1-71 fix
Source
Information for the E1-71 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