F7 Emergency
Your boiler thinks it can still see a flame inside even though it has been told to turn off.
Technical description: Flame detected even though appliance switched off
Typical repair cost: £120-350 (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 F7 — no call-out fees, no surprises.
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Parts commonly replaced
- Flame sensing electrode
- Gas valve
- Main PCB
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