What was found
ON DEPARTURE WITH FLAPS 15/ 20 , WHEN 15/0 SELECTED FLAPS DID NOT MOVE. CYCLED IAW ECAM, NO MOVEMENT. RAN ECAM AND QRH. ON FINAL APPROACH WHEN S/F 30/40 SELECTED, S/ F MOVED TO 30/40. LANDING UNEVENTFUL. REMOVED AND REPLACED THE SFCC NR 1 (21CV) AND SFCC NR 2 (22CV) IAW AMM 27-51-18-04. FLAP/SLAT BITE OPERATIONAL TEST GOOD.