I have two electric wall heaters. The coils in a single turn Bright orange. The other one does not. Is this protected?

Question by faridzadeh: I have two electrical wall heaters. The coils in a single turn Vibrant orange. The other 1 does not. Is this secure?
I have two electric wall heaters (brand name new Cadet SL series) and the a single in the bed room heats up properly. I just not long ago observed the coils in the unit in the den turns a vibrant orange. More so on the appropriate aspect, than the left side, almost as soon as I flip it on. I went to the one particular in the bed room to see if it did that

dayton heaters