BoilerFaultCodesYour boiler's internal computer parts are struggling to talk to each other correctly, which has caused the system to stop working.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Communication error
What causes this fault?
This fault occurs when the boiler's main control board loses its electronic connection with the display or other internal components. The most common reason is a loose or damaged wiring loom between the parts, or a hardware failure on the circuit board itself that prevents signals from being sent. Because the components cannot 'handshake' to confirm everything is safe, the system shuts down for protection.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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