How much does it cost to fix boiler error code Lockout light?

Typical repair cost for the boiler Lockout light fault is £120-250 including labour.

Lockout light High

Boiler Fault Code Lockout light

Also written as LOCKOUTLIGHT — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Lockout light appears across 4 boiler brands and 11 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 because it cannot light its burner or has detected an internal safety problem and shut itself down to prevent damage or risks. (As reported on Potterton Puma 100e)

Pick your boiler brand for the Lockout light fix

Baxi Lockout light 4 models Ferroli Lockout light 2 models Ideal Lockout light 2 models Potterton Lockout light 3 models

Source

Information for the Lockout light 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