TC reported APS fault and master fault intermittently lit up whenever depart from platform since BBTSB. TC press aux-on few times to no avail. TC feedback trai n performance was ok. ~~~~~ TC reported APS fault and master fault i   Function checked and found #2647 A/C 1-2 CCU motor shorted to ground. CCU motor U/V/W isolated and tagged at saloon A/C panel. Notification raised to HM to follow up CCU c/o. Notification to HM: 2570416 Done by: Sufhian (12.2.24)