6 High
Your boiler is failing to detect a flame after it tries to light, causing the system to shut down for safety.
Technical description: Flame detection fault
Typical repair cost: £100-280 (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 6 — no call-out fees, no surprises.
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Parts commonly replaced
- Ionisation electrode
- Ignition lead
- Gas valve
- Burner
*Affiliate links — we may earn a commission at no extra cost to you.