What was found
AIRCRAFT WAS GROUNDED: FLIGHT CREW REPORTED THAT A CENTER LEFT FUEL TRANSFER FAULT ECAM MESSAGE DISPLAYED AND THAT THE CENTER LEFT TRANSFER PUMP DID NOT WORK IN EITHER AUTO OR MANUAL MODE. ON FUEL SD PAGE IT SHOWED AMBER XX FOR CENTER LEFT TRANSFER PUMP AT ALL TIMES IN AUTO, AND IN MANUAL MODE WHEN PUMP WAS SELECTED OFF. IT APPEARED TO VERY SLOWLY TRANSFER FUEL WHEN SELECTED OFF. MAINTENANCE FOUND THE CENTER LEFT TANK CONTROL VALVE ACTUATOR 11QL STUCK IN THE CLOSE POSITION AND REPLACED IT. A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED.