Your boiler's internal computer chips are not communicating correctly or haven't been set up to match your specific model.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Boiler PCB configuration error (may occur if the main PCB or display PCB is changed.)
What causes this fault?
This fault occurs when the boiler's internal control boards fail to recognise each other or have conflicting information about how the unit should operate. The most common reason is that a replacement part has been installed but not correctly programmed to match your specific model, or a surge in the electrical supply has scrambled the memory on the circuit board.
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 FE97 — no call-out fees, no surprises.
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Could it be time for a new boiler?
If repair costs are adding up, a new energy-efficient boiler could be the smarter long-term choice.
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