BoilerFaultCodesYour boiler has detected an internal communication error or hardware fault within its main control system, preventing it from firing up safely.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: System fault burner control unit
What causes this fault?
This fault occurs when the boiler's internal computer and the burner control system stop talking to each other reliably. The most common reason is a electronic failure on the main circuit board or a loose connection in the internal wiring, which means the boiler can no longer safely regulate the flame.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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A boiler cover plan would cover faults like 2940 — 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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