BoilerFaultCodesYour boiler's internal computer brain is experiencing a critical communication error or software glitch that is preventing it from running.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: System fault boiler electronics / basic controller
What causes this fault?
This fault occurs when the boiler's internal computer chips stop talking to each other correctly, effectively causing the system to freeze or crash. The most common reason is a hardware failure within the main control board or a loose internal connection that has disrupted the flow of data.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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