BoilerFaultCodesYour boiler has detected an internal electronics error or a communication failure that is preventing the burner from starting correctly.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Other Errors
What causes this fault?
This fault occurs when the boiler's main control board experiences an internal failure or loses stable communication with the ignition system. It usually signifies that the electronic components have worn out or that a loose connection in the internal wiring is preventing the unit from performing its safety checks. Because the 'brain' of the boiler cannot confirm it is safe to operate, it stops the ignition process entirely.
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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Gas Safe Register →Protect yourself from future repair bills
A boiler cover plan would cover faults like Indicator 2 (Burner Lit) Slow Flashing (2Hz) — no call-out fees, no surprises.
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