A06 High
Your boiler is struggling to keep its flame lit after it fires up, meaning it cannot stay on long enough to heat your home or water.
Technical description: No flame after ignition phase – possible causes: detection electrode fault, flame unstable, incorrect valve gas offset, flue gas circuit
Typical repair cost: £120-£280 (including labour)
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Protect yourself from future repair bills
A boiler cover plan would cover faults like A06 — no call-out fees, no surprises.
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Parts commonly replaced
- Flame detection electrode
- Gas valve
- Condensate trap
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