How much does it cost to fix boiler error code GAS CONTROL TAP STIFF (USER’S)?

Typical repair cost for the boiler GAS CONTROL TAP STIFF (USER’S) fault is £120-200 including labour.

GAS CONTROL TAP STIFF (USER’S) Medium

Boiler Fault Code GAS CONTROL TAP STIFF (USER’S)

Also written as GASCONTROLTAPSTIFFUSERS — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code GAS CONTROL TAP STIFF (USER’S) appears across 1 boiler brand and 4 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning The dial you use to turn your boiler on or off has become extremely difficult to move, which likely means the internal lubricant has dried out or the knob was not put back on correctly after previous work. (As reported on Chaffoteaux Britony Duo 55)

Pick your boiler brand for the GAS CONTROL TAP STIFF (USER’S) fix

Chaffoteaux GAS CONTROL TAP STIFF (USER’S) 4 models

Source

Information for the GAS CONTROL TAP STIFF (USER’S) 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