BoilerFaultCodes Pilot will not light (2) High
Boiler Fault Code Pilot will not light (2)
Also written as PILOTWILLNOTLIGHT2 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Pilot will not light (2) appears across 1 boiler brand and 2 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler is struggling to start because there is still some air trapped in the gas pipes, preventing the pilot light from igniting. (As reported on Chaffoteaux Flexiflame 140)
Pick your boiler brand for the Pilot will not light (2) fix
Source
Information for the Pilot will not light (2) 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