CERTIFICATION PURSUANT TO RULE 30A-2(B) UNDER THE 1940 ACT AND SECTION 906
                            OF THE SARBANES-OXLEY ACT

I, James A. Bowen, Chairman of the Board, President and Chief Executive Officer
of First Defined Portfolio Fund, LLC (the "Registrant"), certify that:

     1.  The Form N-CSR of the Registrant (the "Report") fully complies with the
         requirements  of Section 13(a) or 15(d) of the Securities  Exchange Act
         of 1934, as amended; and

     2.  The  information  contained  in  the  Report  fairly  presents,  in all
         material respects, the financial condition and results of operations of
         the Registrant.


Date:    AUGUST 20, 2008                 /S/ JAMES A. BOWEN
     -------------------------           ---------------------------------------
                                         James A. Bowen, Chairman of the Board,
                                         President and Chief Executive Officer
                                         (principal executive officer)


I, Mark R. Bradley, Treasurer, Controller, Chief Financial Officer and Chief
Accounting Officer of First Defined Portfolio Fund, LLC (the "Registrant"),
certify that:

     1.  The Form N-CSR of the Registrant (the "Report") fully complies with the
         requirements  of Section 13(a) or 15(d) of the Securities  Exchange Act
         of 1934, as amended; and

     2.  The  information  contained  in  the  Report  fairly  presents,  in all
         material respects, the financial condition and results of operations of
         the Registrant.


Date:    AUGUST 20, 2008                 /S/ MARK R. BRADLEY
     -------------------------           ---------------------------------------
                                         Mark R. Bradley, Treasurer, Controller,
                                         Chief Financial Officer and Chief
                                         Accounting Officer
                                         (principal financial officer)