BoilerFaultCodes 329 Medium
Boiler Fault Code 329
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 329 appears across 2 boiler brands and 3 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler's internal control system is confused because two separate components are trying to perform the same task at the same time. (As reported on ECA FELiS FL 50 HM)
Pick your boiler brand for the 329 fix
Source
Information for the 329 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 31 August 2026