BoilerFaultCodesYour boiler has lost communication between its internal computer and a key electrical sensor or motor, meaning it cannot operate safely.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: No electrical connection between component and PCB
What causes this fault?
This fault occurs when the boiler's main control board loses its electrical link with a vital internal component, such as a sensor or the fan motor. It is usually caused by a loose connection, a damaged wiring harness, or a failure within the circuit board itself, preventing the boiler from sending or receiving signals. Because the system can no longer monitor safety or performance, it shuts down to prevent damage.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Worcester Bosch WR325 RSF is discontinued — time for a new one?
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