Reading Invalid or Default Space Temperature from Xenta 104-A When Using STR-150


The space temperature (nvoSpaceTemp) is displaying an invalid or default value (either 621.81 degrees Fahrenheit or 327.67 degrees Celsius). In newer versions of Vista the value will display "Invalid Value".

Product Line

TAC Vista


Vista Workstation, Xenta 104-A, STR-150, LonMaker, NL220


The option to use the STR-150 wall module with display has not been selected.


If using a Xenta controller with software older than version 1.2 see Lessons Learned #5408.

Otherwise, there are two ways to correct the problem:

Using the Xenta 104-A Plug-In

  1. Open the 104-A plug-in.
  2. Select the General tab.
  3. Verify that the "Enable wall module with display" box has been checked.
  4. Click Apply or OK.

104-A Plugin

Using Vista Workstation

  1. In the tree menu find and open the Xenta 104-A.
  2. Open the "8030" object.
  3. Locate and double-click nciAppOptions.
  4. Verify that Bit 14 has been checked and click OK.