I have the IntelliTouch and the IntelliChlor. I am not seeing the problem you indicate. If you wait a few minutes does the reading display correctly? Mine shows the correct reading on the inside dispaly as soon as the outside unit (cell) completes it start up test. That is about 1 or 2 minutes when the pump is first turned on.
I was having a problem with the IntelliChlor telling me to add salt when the salt level was okay. I got a copy of the calibration procedures and have not had any problem since. Even then the inside display woul dshow low salt (say 2900) and the cell "add salt" light would be on - but I never got a zero salt reading.
Good Luck with it.
I forgot to ask - what software version is your outside and inside units? Perhaps yopu need an update. I have an IntelliTouch and a Mobile Touch unit. The IntelliTouch had an older version of software and did not even recognize I had an IntelliChlor (only the Mobile Touch knew). Pentair upgraded it for free. Now it reads the IntellChlor and is ready for the IntelliPump.
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