My water heater's pilot light has been going out on a reguar basis. Every day I have to light it again. It usually lasts through the day but sometimes goes out sooner.The thermocouple has alredy been cleaned/and then replace. I have tried leaving the door ajar, and still it goes out. Tonight I sat and watched it. The pilot light it just as it should, the burner came on, burned until it reached temprerature, and then shut off, as it shut off, whole thing went out again... burner, pilot and all. Relight of the pilot goes easily and it stays ligt happily. One thing that I did notice when the burner was on is that the pilot light seems to be drawn upward a bit from the heat of the burner and the air near it. This pulls the flame away from the thermocouple. I would expect that the thermocouple would still be getting plenty of heat, however... could this be the problem? Any help or similar experiences would be appreciated. The water heater is apparently an "Abco" brand and the controller unit is a UNITROL model 110T.