BoilerFaultCodesYour boiler's internal computer has encountered a critical electronic error and can no longer control the heating system safely.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: internal failure - electronic
What causes this fault?
This fault occurs when the boiler's main control board suffers a hardware failure, meaning the 'brain' of the unit can no longer process data or send signals to other parts. It is usually caused by electrical components wearing out over time or a sudden power surge damaging the delicate circuitry. Once this happens, the boiler shuts down immediately as it can no longer guarantee safe operation.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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