BoilerFaultCodes Fan operates / No spark High
Boiler Fault Code Fan operates / No spark
Also written as FANOPERATESNOSPARK — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Fan operates / No spark 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's fan is running as normal, but the system is failing to ignite the gas required to produce heat. (As reported on Potterton Profile 30E)
Pick your boiler brand for the Fan operates / No spark fix
Source
Information for the Fan operates / No spark 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