BoilerFaultCodesYour boiler has stopped working because its internal components are struggling to communicate with the main control board due to a wiring issue.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Internal wiring error
What causes this fault?
This fault occurs when the boiler's central brain loses its physical connection or 'handshake' with the various electrical components inside the unit. It is usually caused by a loose connection, a physical break in the internal wiring, or a critical failure within the circuit board that prevents it from reading signals correctly.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Could it be time for a new boiler?
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