BoilerFaultCodesYour boiler has detected a general internal fault that is preventing it from running properly, often linked to an issue with the main control system or a signal error.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Function connection 28: Central fault
What causes this fault?
This fault occurs when the boiler's internal computer system fails to communicate with the sensors and components that control the heating process. It is typically caused by a malfunction within the main circuit board or a loose connection in the wiring that prevents the boiler from receiving the safety signals it needs to fire up.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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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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