Adding a GoControl Z-Wave Plug-in Dimmer Module to a network:
Start by adding the controller to a group which lets the controller include a unit to the network.
Also, after installing the PD300Z-2 you should not change the location as it might affect the network.
If you want NWI (Network Wide Inclusion) then you would have to press the button on the PD300Z-2 once.
If you want classic inclusion, then the button on the PD300Z-2 should be pressed twice.