Boiler Fault Code 76:0

Also written as 760 — same fault.

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

Fault code 76:0 appears across 1 boiler brand and 5 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 communication system has stopped talking to a network expansion module, which may affect how advanced heating zones or external controls are managed. (As reported on Viessmann Vitodens 300-W)