I am having installation issues. I already have about 7 Fibaro Dimmer 2s ("the appliance") installed, but this one has me stymied. I have 3 wires in this wire box. I tested the wiring with a simple on/off switch and this works as does the bulb. Just a heads up, I do not know what the third wire does but it does seem important. I followed the instructions on page 9. When I returned the power to the appliance, for a split second the light goes on and the Dimmer displays a green light. Immediately after the light goes dark and the appliance goes to a solid red and stays there. I attempted the var