BoilerFaultCodesYour boiler has detected an electrical connection issue with the gas control system, preventing it from lighting safely.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Gas valve wiring fault
What causes this fault?
This fault occurs when the boiler's main control board loses communication with the gas valve, which is the component responsible for releasing fuel into the burner. The most common reason is a loose or damaged electrical connection between these two parts, though it can also be caused by a complete internal failure of the gas valve itself.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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A boiler cover plan would cover faults like E09 — 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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