BoilerFaultCodes 3306 Low
Boiler Fault Code 3306
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 3306 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 This code is simply a technical reference for your boiler's manual version and does not indicate an actual mechanical fault. (As reported on Warmflow B-series and Bluebird)
Pick your boiler brand for the 3306 fix
Source
Information for the 3306 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