What was found
COCKPIT DUCT OVERHEAT DISPLAYED ON UPPER ECAM SCREEN. TEMPERATURE SHOWS 212, HOT AIR SW IS OFF, TEMPERATURE NOT COMING DOWN, COCKPIT IS COOL. REPLACED DUCT SENSOR 15HK & ZONE CONTROLLER 8HK IAW AMM TASK 21-63-15-000-001 & AMM TASK 21-63-34-000-001-A IAW PTT 3472001. DUCT SENSOR 15HK, NO HELP. REPLACED ZONE TEMPERATURE CONTROLLER, OPERATIONS CHECKED GOOD.