The furnace pilot lights light good and runs a blue flame. The issue is when the furnace burners fire up, the burners go for about a couple of minutes then both the burners & pilot light shut off. I restart the Pilot Light then it will run for 5 minutes then the furnace makes a loud Klick noise then both the burners & pilot light shut down. Could the issue be the Thermo Pile or Thermo Couple.