BoilerFaultCodesYour boiler has stopped working because one of its internal sensors is sending an incorrect signals or has disconnected, preventing it from heating your water safely.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Sensor defect
What causes this fault?
This fault occurs when the boiler's control board loses communication with the sensors that monitor water temperature. It is usually caused by a physical break in the internal wiring or a sensor that has reached the end of its life and is sending unreadable data. Because the boiler can no longer confirm the water is at a safe temperature, it shuts down immediately 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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A boiler cover plan would cover faults like F000 — 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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