BoilerFaultCodesYour boiler has detected that a vital internal electrical connection is missing or has come loose, preventing it from operating.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: X2 link position 4 and 5 missing
What causes this fault?
This fault occurs when a specific electrical bridge or link on the main control board is either missing, loose, or damaged. It often happens after recent maintenance if the link wasn't secured properly, or it can be caused by a vibration-induced connection failure or a fault within the internal wiring harness.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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