BoilerFaultCodesYour boiler has stopped heating because it is unable to accurately measure the water temperature flowing through the pipes.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Burner does not start. Flow sensor fault (short circuit or lead break).
What causes this fault?
This fault occurs when the boiler's internal computer loses communication with the sensor that monitors the heat of the water leaving the unit. It is usually caused by the sensor's internal electronics failing or the connecting wires becoming damaged or loose. Without this data, the boiler shuts down as a safety precaution to prevent the system from dangerously overheating.
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 E13 — no call-out fees, no surprises.
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