BoilerFaultCodesYour boiler has lost its ability to measure the temperature of the water leaving the unit, usually due to a faulty internal sensor or a loose wire.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Flow NTC sensor or connection fault
What causes this fault?
This fault occurs when the boiler's internal computer loses communication with the sensor that monitors the temperature of the water being sent to your radiators. The most common reason is that the sensor has physically failed due to age or internal wear, though it can also be caused by a loose electrical plug or a broken wire within the boiler.
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 07 — no call-out fees, no surprises.
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