From the activehome pro software, I can turn off and on the lights, but can not DIM the lights (in fact with the activehome pro software, it doesn't give me a dimable option.) I tried to fool it and pick a three way siwtch that is dimable, but that didn't work.
I don't use this model of switch, but you are right,
AHP calls the
XPD3 switch a dimmer but when you select it there is no dimmer control. Select the
XPDI3 instead... that one will function the same but will give you the dimmer slider.
However, this is not the cause of your remote dimming problem.
Should the XPD3-IW be dimable from the remote and activehome pro? If so, any thoughts as to what I did wrong?
Yes it should be. As long as your remote's house code is the same as the
XPD3-IW's and that house code is set to be
Transceived in the
CM15A, then it should be dimming. If you can turn it on & off from the remote, then the dimming should be working as well.
Do you have another transceiver on the same house code that could be causing signal interference?