BoilerFaultCodes 16E High
Boiler Fault Code 16E
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 16E 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 is confused because it detects temperature changes in the wrong order, likely caused by a sensor issue or a plumbing component being fitted incorrectly. (As reported on Biasi Concept 400 20 1 Mfs)
Pick your boiler brand for the 16E fix
Source
Information for the 16E 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