150 High
Boiler Fault Code 150
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 150 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 has detected an issue with the air supply or exhaust ventilation system. (As reported on Potterton Osprey CF 125)
Pick your boiler brand for the 150 fix
Source
Information for the 150 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