BoilerFaultCodesYour boiler has stopped working because its internal computer has detected a fault with its temperature sensors or the main control board.
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 error
What causes this fault?
This fault occurs when the boiler's internal computer receives conflicting or illogical signals from its temperature sensors. The most common reason is a short circuit in the wiring or a total electronic failure within the main control board, which prevents the boiler from safely monitoring heat levels.
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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A boiler cover plan would cover faults like F.64 — no call-out fees, no surprises.
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