Technical description
NTC flow sensor short circuit
What causes this fault?
This fault occurs when the boiler's control board receives an incorrect electrical signal from the main temperature sensor, indicating the circuit has been bridged or 'shorted'. The most common reason is that the internal components of the sensor have failed due to age, or moisture has compromised the wiring connections.
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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