TC reported air-con fault. Unable to reset. Staff(TAP) checked and confirmed that rear DT car set #2air-con faulty. Unable to reset. Car was warm. ~~~~~ TC reported air-con fault. Unable to res #3720 a/c 2-2 CCU motor shorted to ground.U/V/W was isolted and tagged.Notification 2496451 raise to HM follow CCU motor c/o. Checked by Sanip/Koh/Rizman. 09/06/23