Boiler Fault Code Off Off Off

Also written as OFFOFFOFF — same fault.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 31 August 2026

Fault code Off Off Off appears across 2 boiler brands and 3 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning The boiler's display is showing 'Off' rather than a specific fault code, which usually means it has lost power or been switched off, so it is most likely not producing heat or hot water until the power supply is checked. (As reported on Baxi 50 HE Plus)