BoilerFaultCodes 280 High
Boiler Fault Code 280
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 280 appears across 3 boiler brands and 5 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your high-capacity commercial boiler is signaling an internal configuration error, meaning the system cannot correctly identify or manage its total heating output. (As reported on Chaffoteaux Flexiflame 140)
Pick your boiler brand for the 280 fix
Source
Information for the 280 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 31 August 2026