"TOM KAN PA" wrote in message
...
I've had these unvented gas logs for about five years. Same room, same
fireplace.
I re-lit the pilot light this fall. It burned fine. One night my wife lit
the
logs. The next day we noticed the pilot light was off. I accused her of
turning
the shut off too far and turning off the pilot light.
One evening I told her I will turn the logs off. I shut them off, the
pilot
light stayed on. For a few minutes.
So I re-lit it and it stayed on, no problem. Until the next time the logs
were
used. After they were turned off, the pilot light burned for a few
minutes, and
went off. I re-lit it, it's still burning, but I know that the next time
when
the logs are used, the pilot light will go off again.
What can be causing this? About the only thing that can be replaced is the
thermo couple. And if this is defective, the pilot light should never stay
on.



Its the thermocouple, and if its defective, it can act any way it wants.
Gas log units are normally a lot different than the $4 cheapy you can get at
Home Depot, and the correct one will normally run about $21-50 depending on
the log set you have.
Replaced about 30 so far this season, and many had the exact same problems
you just described...
Of course, it could be a bad valve too....or even a bad O2 sensor if yours
are ventless.