How much does it cost to fix boiler error code Faulty PCB?

Typical repair cost for the boiler Faulty PCB fault is £250-450 including labour.

Faulty PCB High

Boiler Fault Code Faulty PCB

Also written as FAULTYPCB — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code Faulty PCB 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's electronic brain is unable to send the correct signals to the fan, which prevents the system from starting up safely. (As reported on Johnson Starley Aquair S 10)

Pick your boiler brand for the Faulty PCB fix

Johnson Starley Faulty PCB 1 model

Source

Information for the Faulty PCB fault code is sourced from the official service / installation manual for each model that displays it. Read more about how we source fault codes →

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026