BoilerFaultCodes 134 High
Boiler Fault Code 134
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 134 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 is failing to light because it cannot detect a stable flame or is not receiving the gas it needs to stay running. (As reported on Main Insul 7)
Pick your boiler brand for the 134 fix
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 27 April 2026