What was found
AIRCRAFT WAS NOT GROUNDED. DURING CRUISE, WITH ADDITIONAL CENTER TANK AND CENTER TANK FUEL, ECAM DISPLAYED CENTER LEFT TRANSFER FAULT. PERFORMED FUNCTIONAL TEST OF FUEL TRANSFER SYSTEM PER AMM 28-26-00-720-001. TROUBLESHOT PER TSM 28-26-00-810-815A AND NOTED ERRONEOUS FAULTS GENERATED FROM FWC #1. REMOVED AND REPLACED #1 FAULT WARNING COMPUTER PER AMM 31-53-34 (AALA201712049030). DUE TO HISTORY, REMOVED AND REPLACED PUSH BUTTON SWITCH FUEL MODE 4QL. OPERATIONAL CHECK GOOD.