Your boiler is having trouble measuring the temperature of your hot water, which usually means it won't be able to provide consistent heat for your taps and showers.
This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.
Technical description: Domestic hot water NTC sensor fault
What causes this fault?
This fault occurs when the internal sensor responsible for monitoring your hot water temperature has failed or is sending an incorrect signal to the control board. The most common reason is that the sensor has simply reached the end of its life due to constant heat cycles, or the electrical connection to it has become loose or corroded. As a result, the boiler stops heating water to prevent it from becoming dangerously hot.
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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