BoilerFaultCodesYour boiler is unable to start because it cannot detect its internal memory chip, which contains the essential programming it needs to operate.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Boiler chip card (BCC) is missing
What causes this fault?
This fault occurs when the boiler's control system loses its connection to the small memory chip that stores its identity and safety settings. The most common reason is that the chip has vibrated loose from its socket, or the internal circuitry on the main control board has failed and can no longer read the data.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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