I received my new EZFlora from SHN a few weeks ago. I installed the unit and it has and continues to work flawlessly. Today, I noticed that the formerly white product label has turned brown and has begun to peal away from the case. I touched the unit and it felt uncomfortably hot. (Too hot to hold onto for long). The unit still works. Is it normal for the unit to run so hot or am I in danger of burning down my house?