F67 High

Boiler Fault Code F67

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code F67 appears across 3 boiler brands and 24 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler's internal computer boards have stopped communicating correctly, meaning the system cannot process commands or operate safely. (As reported on Glow-worm Ultracom 35 Store)

Pick your boiler brand for the F67 fix

Ferroli F67 5 models Glow-worm F67 12 models Heatline F67 7 models

Source

Information for the F67 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