As I had stated in a previous question I have a few minor problems with the furnace in the fourteen years we have it. This is the most annoying one. I have replaced it at least 20 times. A service man installed one that lasted only seven days. I had the gas company install one and it lasted three months. The longest they have ever lasted is maybe two years. I have adjusted the position in the flame and the intensity of the flame. Nothing seems to work. Thank you for your help