BoilerFaultCodes 2F:2 Low
Boiler Fault Code 2F:2
Also written as 2F2 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 2F:2 appears across 1 boiler brand and 6 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler is currently running a maintenance program intended to purge air from the system after it was recently filled with water. (As reported on Viessmann Vitodens 333)
Pick your boiler brand for the 2F:2 fix
Source
Information for the 2F:2 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