BoilerFaultCodesYour boiler's internal computer has detected an error in its configuration settings and needs a professional to reset internal parameters.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Parameter check. Automation settings.
What causes this fault?
This fault occurs when the boiler's control board loses or fails to recognise its specific identity and operating instructions. The most common reason is a communication failure between the main circuit board and the small plug-in 'key' that stores the boiler's settings, often caused by a power surge or an internal electronic glitch.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
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