14.65 Low

Boiler Fault Code 14.65

Also written as 1465 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code 14.65 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 currently performing a diagnostic check to confirm its heating output levels and is not experiencing a functional fault. (As reported on Glow-worm EnergySaver)

Pick your boiler brand for the 14.65 fix

Glow-worm 14.65 1 model

Source

Information for the 14.65 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