BoilerFaultCodesYour boiler's computer has detected a conflict between its internal sensors or a wiring fault, causing it to shut down for safety.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Fault: Electronics/sensor - Electronics, safety-relevant sensor or cable defective
What causes this fault?
This fault occurs when the boiler's control center receives conflicting temperature readings that don't match up, triggering an emergency safety shutdown. The most common reason is a physical short circuit in the internal wiring or a specific electronic component failing due to moisture or age. It essentially means the boiler can no longer trust its own sensors to monitor heat levels safely.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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A boiler cover plan would cover faults like F.64 — no call-out fees, no surprises.
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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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