268 Low

Boiler Fault Code 268

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code 268 appears across 2 boiler brands and 12 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 in a manual testing mode that was triggered via the settings menu, meaning it is performing diagnostic checks rather than heating your home as usual. (As reported on Worcester Bosch Greenstar i)

Pick your boiler brand for the 268 fix

Navien 268 1 model Worcester Bosch 268 11 models

Source

Information for the 268 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