My dryer went out and neighbor gave my a older model Kenmore Heavy Duty dryer and said it worked.When I plugged it up it worked fine but it concerns me because if you look behind it while its on and running there is a red glow.If its off its not there.Ive never seen a dryer do this before is it normal to light up like that?Should it be a concern I haven't used it because fear mighht start a fire in the house.