I have a two year old Dunkirk boiler in which the pilot light goes out for no apparent reason. Wind doesn't seem to be a factor and the flame is large enough. I've noticed that when I go to relight the pilot light and when I turn the dial to "Pilot" the gas valve makes a buzzing sound. Once the pilot lights and I turn the dial to "On", the buzzing goes away. 3 to 4 weeks later the pilot goes out.
Any suggestions.