That wasn't the problem and I found myself lighting it over and over again to the point where I had to light it 6 times in one day. I gave up and called the plumber again. I had been putting this off as they charge $250 just to come out, then parts, then of course their service fee.
This time they worked on it for a series of about 2 days, replacing one thing and another. The guy said there was some sort of updraft problem and that the only thing they didn't replace was the roof vent.
They had one more part coming but they were sent the wrong thing so they decided to just give me a new water heater.
Then I noticed that the older new one had dents all over it in places I couldn't see where it was installed. The guy had a problem getting it in the small space as the models they make these days are a lot wider. I thought perhaps he might have damaged it in some way in installing it.
So now I have the new one. But... It too has problems staying lit! It was going out about every 2-3 weeks. Then the last time I had extreme trouble getting it lit. Someone (perhaps here?) suggested a website which I went to and also ordered a book from. In the book and also on the internet, it says to light these, you need to depress the pilot light button and then the igniter switch 10-15 times while still holding the pilot light button down. This after shutting it off for 5 minutes to clear out the gas.
Well, I did that and it stayed light for a long time. Several months. But now it went out again! It's very annoying as it only seems to happen right when someone needs to take a shower.
I just had a new roof put on, explained the problem to the roofer and asked him to put on a new vent. Which he did. So...
Why is it doing this? I did have the garage door open yesterday for many hours because I was doing a big clean out. But... We had hot water through the night and early this morning. Not sure when it did go out as I didn't get into the shower until afternoon and I could tell by the lukewarm water that it was out again.
Do you think it could just be the way that my house sits? That somehow the wind, even if not strong could be putting it out? Weird thing is, we lived in this house for several years with the old water heater and it never went out. Not sure what that one was. Never really needed to look at it until it did have a problem.