Just installed my Dimmer 2 connected to 3*60W incandescent lights, allowed it to calibrate and experienced my first overheating.
Googling and checking the forums I see that everyone suggest setting the Dimming Type to Trailing edge. It was in Leading edge so I set it back to Trailing and other overheat in a couple of minutes.
This led (pun intended) to think about my setup with incandescent lights and after som research I found that Leading edge should be used with "normal" (i.e. non-LED) lights. Changed to Leading edge dimming and now all is fine.
Just wanted to post this in case anyone else here with old lamps.
/Mattias