BoilerFaultCodesYour boiler's computer has detected an internal communication error and has shut down as a safety precaution.
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
What causes this fault?
This fault occurs when the boiler's main control board loses the ability to talk to other internal electronic components. It is physically caused by a break in the electrical signal, often due to a loose wiring connection or a component failure on the circuit board itself. Because the 'brain' of the boiler cannot verify that all systems are safe, it shuts down immediately to prevent damage.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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