How much does it cost to fix boiler error code Boiler locked-out?

Typical repair cost for the boiler Boiler locked-out fault is £100-250 including labour.

Boiler locked-out High

Boiler Fault Code Boiler locked-out

Also written as BOILERLOCKEDOUT — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Boiler locked-out 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 shut itself down as a safety precaution and needs a manual reset to try and start up again. (As reported on Ferroli Tempra 12 18)

Pick your boiler brand for the Boiler locked-out fix

Ferroli Boiler locked-out 1 model

Source

Information for the Boiler locked-out 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 27 April 2026