[ChuckS]

I would check the placement of the remote temp sensor.. if it is mounted inside a hole inside the wall the temps it detects will be what's inside the wall instead of what actual temp is in the room...

The remote temp sensors... whether its an In Command or CCC2 thermostat are MOUNTED separately to each air conditioner on the roof.. The connections for the temp sensors are at the control module of each AC roof unit and are then connected in parallel from Zone 1 to Zone 2 via CANBUS line..

The wire for each remote temp sensor is one long continuous run from its location to the control module..

To verify the temp sensor is reading accurately disconnect it from its Zone control module on the roof and use multi meter and read the resistance of the remote sensor compared to the actual temp inside the room where its mounted at.

This PDF should help you... there is also a resistance reading chart with various resistance readings for temps... Also images of incorrectly and correctly mounted remote temp sensors are in the PDF