BoilerFaultCodesYour boiler's computer control board has experienced an internal electrical fault and is unable to communicate with its components.
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 electronic failure that prevents it from processing instructions or monitoring safety sensors. The most common reason is the natural degradation of electrical components over time, though it can also be triggered by a sudden power surge or moisture getting onto the circuitry.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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