Boiler Fault Code Safety disconnection (General)

Also written as SAFETYDISCONNECTIONGENERAL — same fault.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026

Fault code Safety disconnection (General) appears across 1 boiler brand and 2 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your water heater has detected a safety issue and stopped working as a precaution because it cannot get the gas supply it needs to start. (As reported on Saunier Duval Opalia)