29 High

Boiler Fault Code 29

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code 29 appears across 12 boiler brands and 60 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 board cannot safely communicate with the gas valve, preventing the system from igniting for your heating and hot water. (As reported on Intergas Compact HRE OV)

Pick your boiler brand for the 29 fix

Alpha 29 25 models Baxi 29 5 models Chaffoteaux 29 6 models Glow-worm 29 1 model Grant 29 1 model Ideal 29 2 models Intergas 29 10 models Main 29 2 models Potterton 29 2 models Remeha 29 2 models Viessmann 29 1 model Vokera 29 3 models

Source

Information for the 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 27 April 2026