Heatilator GC150 NG - Pilot goes out only after turning the fireplace off.
Any thoughts on why the pilot may go off only when the fireplace starts to cool after use?
- When the fireplace is cold I can light the pilot and it will stay lit for days/weeks.
- When I turn on the fireplace and it gets hot, the pilot continues to remain lit.
- When I turn on the fireplace and it gets hot, and then turn it off, the pilot remains lit for 3-4 minutes and then I hear a popping sound and it goes off.
Any thoughts on why the pilot may go off only when the fireplace starts to cool after use?