Tonight I installed an XPS3 switch in our church auditorium which is also a gym. The power is 3 phase in a Y configuration. The lights that the switch control are just 2 fluorescents and are 120V. The panel that the lights come from is 208Y/120Y. That panel connects to a transformer and then to the main panel which is 480Y/277Y.
I'm controlling it(or attempting to) with a PHC01 mini controller. It works like a champ on an outlet coming from the same panel as the lights but the place where we need the control is in our sound booth which comes from another 208Y/120Y panel which is fed by that same 480Y/277Y panel. It does work intermittently from that location but it's very sporadic. It sometimes works when turning the lights on. It never works when turning them off. That doesn't make sense to me because, if I understand correctly, off is just another signal just like on so why does one work but not the other?
When it didn't work right away, we installed a XPCR coupler/repeater in the panel where the lights were located. Didn't change a thing. The repeater did not blink in recognition of a signal when the control was on the other panel. When on a plug from the same panel, it blinks. I thought that was odd because it does turn on the light every now and then from the other panel.
We then installed a 2nd XPCR coupler/repeater in the other panel. No change. The repeater in the 2nd panel blinks but the one in the 1st panel still doesn't. The lights work exactly the same with the 2nd repeater installed.
I'm new to the X10 thing so I'm sure I'm probably missing something. Is there anything else I can try?