How much does it cost to fix boiler error code NO LOCKOUT RESET?

Typical repair cost for the boiler NO LOCKOUT RESET fault is £150-350 including labour.

NO LOCKOUT RESET High

Boiler Fault Code NO LOCKOUT RESET

Also written as NOLOCKOUTRESET — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code NO LOCKOUT RESET 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 detected an internal error and is refusing to restart even after you have tried to reset it, meaning it cannot operate safely. (As reported on Potterton Performa System HE)

Pick your boiler brand for the NO LOCKOUT RESET fix

Potterton NO LOCKOUT RESET 1 model

Source

Information for the NO LOCKOUT RESET 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