I have an older lennox furnace, serial number GH6D-80-M-1.
I tried to light the pilot light and after releasing the reset button after holding a minute and longer, the pilot just goes out.
I replaced the thermo-couple twice, and the problem still exists.
This furnace is in my garage and I use it only when I am working in there. But the pilot always normally stays lit. The furnace has a General Controls B52 gas valve. Whats's wrong???