I'm assuming you mean the pilot. The only times I've had that problem
was windy days with insufficient baffling in the chimney pipe, and when
I had a bad thermocouple, but that usually prevents lighting it at all.


CJ wrote:
I live in the mountains of NM. We have gotten about 4-5 inches of rain in
the past 3 days. Yesterday my gas water heater stopped staying lit. I relit
it last night and it was out again this morning.

Can an extreme humidity make the thermocoupler keep going out?