BoilerFaultCodesYour boiler's internal computer has suffered an electronic failure and can no longer communicate with the rest of the system.
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 critical hardware failure or a memory corruption issue. It is typically caused by a power surge, moisture ingress, or simply the natural degradation of electronic components over time. Because the central 'brain' cannot talk to the sensors or the pump, the boiler shuts down immediately for safety.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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