The thermocouple is the small copper rod that the pilot light hits. The thermocouple's job is to shut a gas safety valve if the pilot light goes out. That's important because gas is always being supplied to the pilot to keep the flame lit. But if the pilot flame goes out, then the gas would still be released.
Hi, I'm not sure what is causing the water heater pilot light to go out. It doesn't happen at all in the summer, even during times of high wind. It only goes out in the winter. This started happening at the end of last winter. I realize I should have had it checked out at that time but when the warm weather came I forgot all about it:rolleyes: I turned on the furnace for the first time this ...