d.67 Low

Boiler Fault Code d.67

Also written as D67 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code d.67 appears across 3 boiler brands and 45 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 short, planned cooling-down period between heating cycles to protect its internal parts, and it will start heating your home again automatically in a few minutes. (As reported on Heatline Capriz Plus)

Pick your boiler brand for the d.67 fix

Glow-worm d.67 6 models Heatline d.67 7 models Vaillant d.67 32 models

Source

Information for the d.67 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