Pilot out water heater wont stay lit

[CM9949]

I own a A. O. Smith water heater FSG FSG 40 216.

This morning suddenly we have no hot water. I checked the pilot and it was out, so I attempted to relight the pilot.
It will not light stay lit, so I run out to HD and buy another TC.
Remove the Burner assembly and replace TC.
Same problem it will not stay lit.
The flame for the pilot is solid blue if that helps.
All other gas appliances work fine.
Help :confused:

[Ed Imeduc]

Is the new TC tip red from heat? You say good blue flame. Did you blow or clean around and in the pilots venturi? Can you turn the pilot light up some ? Some gas valves on the heater you can turn their pilot up ?

ED ;)

[CM9949]

I meant the pilot is not clogged in any way. When I hold the pilot down it produces a blue flame. Not yello except at the tips. Trying to rule out venting or clogging issues. The TC does not glow should it?

[CM9949]

I held down the pilot for a good 3 minutes and yes it glows

[594tough]

It could be the main gas control valve. First you could unscrew the t/c connector and clean the contact inside the valve with a pencil eraser. Blow out the dust. If that doesn't do it, it imight be valve time.

[CM9949]

Nope eraser trick didnt work. Will check into valve.

[Cluso]

CM9949: I am having the same problem with the pilot light on a gas wall heater that you have described on your water heater. I would appreciate your posting how you fixed your pilot light. :wall: Thanks

[Ed Imeduc]

Cluso You might check on yours A lot of wall furnaces work on a millivolt generator set up . That is they have aThermopile there in the pilot flame that makes the electric for the wall furnace and dont have a thermocouple.
If you have a regular TC there and you put a new one in .Make sure that you cleaned out the pilot venturi real good and have a good blue flame on the TC.

ED ;)