How much does it cost to fix boiler error code Boiler shut down (lock out)?

Typical repair cost for the boiler Boiler shut down (lock out) fault is £120-250 including labour.

Boiler shut down (lock out) High

Boiler Fault Code Boiler shut down (lock out)

Also written as BOILERSHUTDOWNLOCKOUT — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Boiler shut down (lock out) appears across 1 boiler brand and 3 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has stopped working as a safety precaution and needs a manual reset to try and start up again. (As reported on Ferroli DOMINAplus F24D)

Pick your boiler brand for the Boiler shut down (lock out) fix

Ferroli Boiler shut down (lock out) 3 models

Source

Information for the Boiler shut down (lock 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