Hey All,
Thanks for the suggestions.
I am reasonably certain the issue is not network communication. I have tested the system both ways, and it has never failed in over a hundred trials The fan switch is always seen by the ISY994, and the ISY994 can always turn on/off the fan, no fails, ever.
The 1 second off works flawlessly on the only program that works. I shortened it to 1 second over time just to make my troubleshooting faster.
Here's what I know:
1. The ISY sees the command, but does not execute the program.
2. The program whose status is "True" and is colored green on the directory tree works
3. The programs whose status is "false" and are "red" do not work
I am pretty sure it is something super basic as I am new here, so whatever it is once uncovered will likely have a resounding chorus of "duh".
Thanks Again,
Mike