BoilerFaultCodesYour boiler's main internal computer has developed a technical error and can no longer communicate with the burner safely.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Internal fault in burner controller.
What causes this fault?
This fault occurs when the boiler's main control centre suffers an internal electronic failure and loses its ability to manage the burner safely. The most common reason is a hardware malfunction within the printed circuit board, often triggered by age or an electrical surge that disrupts the sensitive components required to run the unit.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
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A boiler cover plan would cover faults like F009 — no call-out fees, no surprises.
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Could it be time for a new boiler?
If repair costs are adding up, a new energy-efficient boiler could be the smarter long-term choice.
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