BoilerFaultCodes Pilot goes out when gas knob is released High
Your boiler's pilot light is failing to stay ignited, which prevents the main system from starting up.
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: 1. Gas knob not fully held in before releasing. 2. Thermocouple not in pilot flame. 3. Pilot flame too soft. 4. Faulty thermocouple or union loose. 5. Main gas valve not purged. 6. Faulty thermoelectric valve. 7. Overheat failing.
Typical repair cost £120-250 (including labour)
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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