BoilerFaultCodesYour boiler is unable to safely control the flow of gas required for ignition and operation, causing the system to shut down.
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 error
What causes this fault?
This fault occurs when the boiler's internal computer is unable to communicate with or control the movements of the gas valve. The most common reason is an electrical failure within the valve’s motor or a faulty ignition lead that prevents the unit from sustaining a flame safely. In some cases, the main circuit board may be sending incorrect signals, leading the boiler to shut down as a safety precaution.
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 F029 — 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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