|Q:||I have a State Select GS640YBRT. I have just replaced the gas control valve and the thermocouple kit they sell for it (the universals don’t work or something in these, so I had to buy the $60 kit).|
Everything is hooked up correctly. used the leak check liquid to make sure no leaks. Of course I refilled the water heater as well. I see the spark. I see the gas pilot light light. It will stay light without flickering as long as I hold the pilot light button down, but as soon as I let the button up, the pilot light goes out.
I have held it down for up to 2 minutes and it still goes out the second I let off the button.
What am I doing wrong here?
|Q1:||UPDATE: Took the burner unit out, and bent the little arm that holds the thermocouple to make sure that it was sufficiently in the heat.|
Same thing continues to happen. Pilot light will light, but only as long as we depress the pilot button.
|A:||I’d make sure the thermocouple is being nicely heated. It actually should glow a very dull red. It’s best if the pilot flame wraps most of the way around the tip of the thermocouple. Attached is a photo (at right). Is yours anything like that? (Larry Weingarten)|
|Q2:||OK, so the thermo has NOT glowed red like that, but it is definitely fully in the flame. The flame looks more like a teardrop. Tomorrow I am going to try and see if I can get a good pic of it (I had the “door” not screwed in so I could see the pilot light lit and know the exact location of the thermo in it).|
I may have the light hitting too far down the therm and not on the tip. I will check that as well. Thanks for the response. My friend and I consider ourselves pretty handy, and this is driving us nuts.
I will include pictures of everything tomorrow, since I will be taking the burner assembly out again.
|A1:||Hi, You might also want to be sure the thermocouple, where it screws into the control is clean and snug. I usually just wipe the end of the thermocouple with a knife so it shines and screw it in snugly, so it makes good contact. Also, you could heat the tip of the thermocouple and use a meter to measure millivolts or milliamps to see if it really is generating some electricity. Here’s a link that might help: https://www.hunker.com/13414881/how-to-test-a-thermocouple-with-a-multimeter . (Larry Weingarten 6/18/20)|