Problem with conductivity psensor connected to the expansion box

I have a conductivity sensor which is connected to the expansion box 2. It doesn't display any value. Instead displays "***".
I tried connecting it to the controller(3) itself and-voila- it started displaying a value.
It shows "***" only when it is connected to the expansion box 2. I tried disconnecting and reconnecting it several times thinking that it would be a connectivity issue but the result was still the same. All the other sensors connected to the expansion box 2 show some value(and deviation when dipped in a different fluid).

Please Help.

I met the same trouble with you, and it seemed have been solved already. You can try to do this: GCC--"system"--"PAB"--"expansion box 2"--"configuration",change the conductivity sensor from "Saltwater" to "Freshwater" and clink "ok". Then, change the sensor from "Freshwater" to "Saltwater" as the same process.

Give the above steps a try. If you haven't done so already, please calibrate all probes connected to the EBX2.