OK, here's the problem. I have a recessed light in a shower. It has the proper trim ring and the install seemed to be done right. The light will only stay on for about 5 min. and stops working. After it cools down, it can be turned back on. It is between level 1 & 2 (no insulation). I'm the gc and my question is; do I call my electrician back to replace a faulty can or could something else be causing this?