BoilerFaultCodesYour boiler is having trouble communicating with its control screen or your thermostat, which is preventing it from receiving your heating instructions.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: User interface or distant control panel fault
What causes this fault?
This fault occurs when the main computer inside the boiler loses its physical connection to the display panel or the external controller. It is usually caused by a loose wiring connection or a component failure on one of the circuit boards, meaning your instructions can no longer reach the boiler’s ignition system. Think of it like a broken telephone line between your thermostat and the boiler's engine.
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 12 — no call-out fees, no surprises.
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