BoilerFaultCodesYour boiler's internal computer parts are having trouble communicating with each other, meaning the system cannot safely start up.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Internal error / communication link cable fault
What causes this fault?
This fault occurs when the data link between the boiler's main control board and its display panel is interrupted or broken. It is usually caused by loose wiring connections, moisture getting onto the electrical components, or a critical failure within the printed circuit board itself.
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 08 — no call-out fees, no surprises.
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