BoilerFaultCodesYour boiler has detected an internal communication error between its electrical sensors and the main control board, 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: Electronics/sensor fault
What causes this fault?
This fault occurs when the boiler's main computer receives conflicting or impossible signals from the internal temperature sensors. The most common reason is an electrical short-circuit or a component failure on the main circuit board, which prevents the boiler from safely monitoring the water temperature.
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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