BoilerFaultCodesYour boiler has detected an internal communication problem between its electronic brain and the gas supply system, meaning it cannot safely light the flame.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Valve drive error – possible gas valve or control box fault
What causes this fault?
This fault occurs when the boiler's main control board loses the ability to communicate with or operate the gas valve safely. The most common reason is an electrical failure within the gas valve's motor or a fault on the circuit board that prevents it from sending the correct starting signal. In some cases, it can be caused by loose or damaged wiring connections between these two vital components.
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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Keston C36 is discontinued — time for a new one?
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