BoilerFaultCodesYour boiler is struggling to deliver the correct mix of air and gas required to light 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: Opening air/gas ratio control valve/oil solenoid valves
What causes this fault?
This fault occurs when the boiler's internal computer is unable to communicate with or control the valve that regulates the flow of gas into the burner. It signifies a hardware failure where the gas valve remains closed or unresponsive, preventing the boiler from creating a flame to provide heating or hot water. The most common reasons include a faulty electronic control board, a loose wiring connection, or a mechanical 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 284 — 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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