Boiler Fault Code Power supply

Also written as POWERSUPPLY — same fault.

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

Fault code Power supply appears across 1 boiler brand and 1 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has lost electrical power and cannot start or run any of its functions. (As reported on Grant Vortex Blue)