TC reported air-con fault. Unable to reset. Staff(WLD) checked and confirmed that car 3557 set #2 ai r-con faulty.Reset - ok. Car was cooling. TC reported air- con fault. Unable to reset. Staff(WLD) checked and confirmed ~~~~~ BSD: To check 3557 A/C 2 evap for leak Performed checking inside hatch cover.Found no abnormalities such water presence,leakage on a/c assembly system. Checked by Farhan/Firdaus/sufian.  19/12/23 3557 TC reported air-con fault Unable to reset. Staff(WLD) confirmed 3557 A/C 2 faulty.  Reset - ok. Car was cooling.  3557 A/c 2 Found fault code 619 (Air-con 2 HLPS2 operation) on TIMS. Charged freon level up to 120/35 (HP/LP). Aircon cut-in/out ok. No leakage found from CCU. Ops 20 raised to check evaporator for any leak.  Zulfudhly/Koon PL 45274