BoilerFaultCodesYour boiler's main control board has lost communication with an internal module or plug-in component, causing 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: Module not detected.
What causes this fault?
This fault occurs when the boiler's main control board loses the electronic 'handshake' with its internal software chip or plug-in components. It is usually caused by a loose connection during a service, a power surge that has glitched the electronics, or a component failure on the PCB itself. Essentially, the brain of the boiler can no longer see the vital parts it needs to operate safely.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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