How much does it cost to fix boiler error code Ignition Lock-out?

Typical repair cost for the boiler Ignition Lock-out fault is £120-250 including labour.

Ignition Lock-out High

Boiler Fault Code Ignition Lock-out

Also written as IGNITIONLOCKOUT — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Ignition Lock-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 stopped working because it cannot light the flame required to produce heat or hot water. (As reported on Halstead Ace High)

Pick your boiler brand for the Ignition Lock-out fix

Halstead Ignition Lock-out 1 model

Source

Information for the Ignition 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