Boiler Fault Code Boiler Fault Finding 3

Also written as BOILERFAULTFINDING3 — same fault.

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

Fault code Boiler Fault Finding 3 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 has failed to ignite even though it has power and fuel, so it has safely shut itself down to prevent any issues. (As reported on Grant Vortex Eco)