BoilerFaultCodesWhat the manual says
Manufacturer manualCentral Heating NTC Fault
From this model's manual
Verified against the Potterton Potterton Gold Combi He Installation Boiler Error Codes installation & service manual, page 52.
What causes this fault?
This fault occurs when the boiler's control board loses communication with the sensor that monitors water temperature coming back from your radiators. The most common reason is that the internal components of the sensor have failed due to age or wear, but it can also be caused by loose or damaged electrical wiring. Since the boiler cannot safely monitor how hot the water is, it shuts down as a safety precaution.
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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