Looks like we have a problem with a Williams Dual wall heater. The heater has been in place for a number of years. Despite numerous attempts to fix the problem, the pilot continues to go out randomly. It may stay on for months at a time, then will simply go off. Once it starts popping off, it is usually not too difficult to relight, but may go off within 10 minutes or an hour. Or, as stated, may stay on for months. Seems most affected in cold weather...
Thanks for any help!