BoilerFaultCodesYour boiler has detected a communication error between its internal sensors and the main control board, preventing it from heating your home safely.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Electronics/NTC fault
What causes this fault?
This fault occurs when the boiler's main computer receives conflicting or impossible signals from its internal temperature sensors. It is usually caused by a short circuit in the wiring or a hardware failure within the control board itself, which prevents the system from accurately monitoring the water temperature. Because the boiler cannot guarantee it is operating at a safe heat level, it shuts down as a safety precaution.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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