How much does it cost to fix boiler error code Volatile lockout?

Typical repair cost for the boiler Volatile lockout fault is £100-350 including labour.

Volatile lockout High

Boiler Fault Code Volatile lockout

Also written as VOLATILELOCKOUT — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Volatile lockout 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 running and entered a safety shutdown mode, which is indicated by the reset button flashing. (As reported on Worcester Bosch Greenstar 12i System)

Pick your boiler brand for the Volatile lockout fix

Worcester Bosch Volatile lockout 1 model

Source

Information for the Volatile lockout 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