F15 High

Boiler Fault Code F15

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code F15 appears across 6 boiler brands and 23 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has stopped working because it cannot properly control the fan that removes waste gases from the system. (As reported on Ferroli Modena HE)

Pick your boiler brand for the F15 fix

British Gas F15 1 model Euroterm F15 1 model Ferroli F15 12 models Glow-worm F15 6 models Ideal F15 1 model Johnson Starley F15 2 models

Source

Information for the F15 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