BoilerFaultCodes 5 29 High
Boiler Fault Code 5 29
Also written as 529 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 5 29 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 stopped working because it cannot detect that the internal air circulation fan is running, which is a safety requirement for it to ignite. (As reported on Vokera Eclipse)
Pick your boiler brand for the 5 29 fix
Source
Information for the 5 29 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