BoilerFaultCodesYour boiler has detected an internal electrical conflict or a sensor failure that is preventing it from running 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/sensor fault
What causes this fault?
This fault occurs when the boiler's main control center receives conflicting signals from its internal temperature sensors, causing an electrical 'short circuit' error. It is usually triggered by a faulty sensor sending incorrect data or a failing circuit board that can no longer process information correctly.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
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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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