BoilerFaultCodes E26 221 High
Boiler Fault Code E26 221
Also written as E26221 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code E26 221 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 has detected an issue with the internal air flow system, which prevents it from igniting safely to start heating your home. (As reported on Baxi Solo PF)
Pick your boiler brand for the E26 221 fix
Source
Information for the E26 221 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