A06 High
Your boiler is failing to detect a flame after it tries to start up, meaning it cannot provide heating or hot water.
Technical description: No flame after the ignition phase – electrode error, flame unstable, incorrect valve gas offset or flue gas circuit obstructed
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
- Ignition electrode
- Gas valve
- Detection electrode
- PCB
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