The Xenta 102-AX VAV controller does not indicate any terminal load even though the demand is present at the VAV.
IE the VAV setpoint is 23°C degrees and the room temperature is 26°C degrees.
Xenta 102-AX VAV controller
The 102ax has been left in calibration mode. When the 102ax is in this mode the terminal load remains at 0%
To check this from Vista locate the two points "UCPTvavselection.CPH" and "UCPTvavselection.CPl". These object are located in the VAV_controller object of the 102-AX controller.
If one indicates "CALIBR ACTIVE" then the 102-AX is in airflow calibration mode.
This screen capture shows a Normal state of a 102-AX.
To allow the terminal load to respond complete the Airflow calibration.
If this has been left this way and no calibration is required a power cycle of the 102-AX will remove the 102-AX from airflow calibration mode.