134 High

Boiler Fault Code 134

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code 134 appears across 4 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 is trying to start but cannot detect a flame, likely because the gas supply is blocked or the ignition system is failing to spark. (As reported on Main Eco Compact Combi)

Pick your boiler brand for the 134 fix

Baxi 134 3 models Ideal 134 1 model Main 134 3 models Potterton 134 3 models

Source

Information for the 134 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