F29 High

Boiler Fault Code F29

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code F29 appears across 2 boiler brands and 10 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has lit successfully but then lost its flame while it was running, causing the system to shut down for safety. (As reported on Glow-worm Ultracom 35 Store)

Pick your boiler brand for the F29 fix

Glow-worm F29 8 models Heatline F29 2 models

Source

Information for the F29 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