BoilerFaultCodesYour boiler has stopped working because a sensor that measures the temperature of the water leaving the unit has failed or has a poor connection.
Book a Gas Safe engineer within 24–48 hours. Your boiler may be unsafe or could break down completely if left.
Technical description: Central heating flow NTC fault
What causes this fault?
This fault occurs when the boiler's internal computer can no longer read the temperature of the water being sent to your radiators. The most common reason is that the sensor has either suffered an internal electrical failure or the wiring connecting it to the main control board has become loose or corroded. Because the boiler cannot safely monitor how hot the water is getting, it shuts down 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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