BoilerFaultCodes Appliance wont fire High
Boiler Fault Code Appliance wont fire
Also written as APPLIANCEWONTFIRE — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Appliance wont fire 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 failing to start because it cannot detect a demand for heat, the water pressure is too low, or an internal electrical fuse has failed. (As reported on Vokera Mynute 10E)
Pick your boiler brand for the Appliance wont fire fix
Source
Information for the Appliance wont fire 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