BoilerFaultCodesTechnical description
Your flow NTC has developed a fault.
What causes this fault?
This fault occurs when the internal sensor responsible for monitoring the heat of the water leaving the boiler fails to send a consistent electrical signal to the main control board. The most common reason is that the sensor has either suffered an internal electrical failure or developed a loose connection, causing the boiler to shut down as a safety precaution. Over time, constant changes in temperature can wear these components down until they eventually fail to report accurately.
Engineer required
This is a high severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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