BoilerFaultCodesYour boiler has lost its connection to its internal memory chip, meaning it no longer knows its specific configuration settings.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Data plug error
What causes this fault?
This fault occurs when the boiler’s main control board can no longer communicate with a small physical chip that stores its identity and operating instructions. The most common reason is that this component has worked itself loose over time or its electrical internal memory has failed. In some cases, a fault within the main circuit board itself prevents it from reading the data provided by the plug.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
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A boiler cover plan would cover faults like b1 — no call-out fees, no surprises.
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Worcester Bosch WR325 RSF is discontinued — time for a new one?
Parts for discontinued models can be hard to find and expensive. A new A-rated boiler could save you money on both repairs and energy bills.
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