BoilerFaultCodes GAS CONTROL TAP STIFF (USER’S) High
The dial you use to turn your boiler's gas supply on or off is difficult to move, preventing you from operating the boiler correctly.
Call an engineer soon
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: i) Grease dried, ii) Operating mechanism replaced incorrectly
Typical repair cost £120-200 (including labour)
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Protect yourself from future repair bills
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