TC reported air-con fault. Unable to reset. Staff(WDL) checked and confirmed that car 3507 set #1 ai r-con faulty. Reset - ok. Car was cooling. TC reported air-c on fault. Unable to reset. Staff(WDL) checked and confirmed ~~~~~ TC reported air-con fault. Unable to reset. Staff(WDL) checked and confirmed that car 3507 set #1 air-con faulty. Reset - ok. Car was cooling.  #3507 AC1 checked and found evaporator unit choke. Ops 20 to change out AHU1 Done by: Kumar/Saini. 20.3.24 To Change out  3507 AHU#1  3507 Aircon 1 AHU changeout done. Conducted Function test aircon 1-1 short cycling again. Suspect CCU choke raise notif to hm for CCU changeout. Notif to hm:2581865 Done by Saini/Asruddin/Morgan 45372