F009 High
Your boiler's main internal computer has developed a technical hardware fault and is unable to operate the heating or hot water.
Technical description: Bunner controller has internal fault
Typical repair cost: £280-450 (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 F009 — no call-out fees, no surprises.
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Parts commonly replaced
- Main PCB (Printed Circuit Board)
- Burner Control Unit
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