11-65 High
Your boiler is struggling to keep the flame steady and will keep trying to restart itself until it succeeds.
Technical description: Flame stabilisation error – wait for the boiler ignition trial
Typical repair cost: £120-350 (including labour)
DIY fix possible
Wait for the boiler to finish its automatic restart cyclesCheck that your gas meter has credit (if applicable)Ensure other gas appliances in your home are working correctly
Protect yourself from future repair bills
A boiler cover plan would cover faults like 11-65 — no call-out fees, no surprises.
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Parts commonly replaced
- Ignition electrode
- Flame sensing probe
- Gas valve
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