TC reported air-con fault. Unable to reset. Staff(WDL) checked and confirmed that car 1690 set #1 ai r-con faulty. Unable to reset. Car was cooling. ~~~~~ TC reported air-con fault. Unable to reset. Staff(WDL) checked and confirmed that car 1690 set #1 air-con faulty. Unable to reset. Car was cooling. CE: 1690 A/C #1 P/V/F lit. Unable to reset. Found ACPCB1 tripped/not able to normal.Isolated ac1.Temp.27.2c. 1690 ACPCB1-tripped  From TIMS observed car 1690 FC 408 APS fault, 414 APS inverter over current, 527 Aircon1  lost power, 528 Aircon1  PR Failure. Further checked found 1690 AC1-1 overcurrent. Isolated AC1-1 and raised notification for CCU change out. Notification: 2588881 DOne by: Saini/Asruddin/Morgan 12.4.24