BoilerFaultCodesYour boiler has lost its electrical connection to the gas supply unit, meaning it cannot ignite to provide heating or hot water.
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 connection error
What causes this fault?
This fault occurs when the boiler's main control board loses the electrical signal required to operate the gas valve. The most common reason is a loose or damaged wiring connection between these two parts, or an internal electronic failure within 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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