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

Typical repair cost for the boiler Lock-out Indicator fault is £100-350 including labour.

Lock-out Indicator High

Boiler Fault Code Lock-out Indicator

Also written as LOCKOUTINDICATOR — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Lock-out Indicator 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 for safety because it cannot successfully light or maintain a flame. (As reported on Worcester Bosch Greenstar 25 HE Combi)

Pick your boiler brand for the Lock-out Indicator fix

Worcester Bosch Lock-out Indicator 1 model

Source

Information for the Lock-out Indicator 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