I replaced the thermal coupler in my hot water heater,The pilot stays on and the burner lights.After a few hours the pilot goes out.The flame is a nice blue color.It seems like there is enough draft going up the flu.
What could be the problem

Hi melsack and Welcome to The Plumbing Page. At AskMeHelpDesk.com. You're responding to a 5 year old dead thread so I gave you one of your own. Look in then upper left hand corner of the first post form the date before you post, Thanks,