TIMS indicated rear DT car air-con set #1 faulty. Staff (NEW) checked and confirmed. Reset - ok. Carwas cooling. ~~~~~ TIMS indicated rear DT car air-con set 3557 Checked found 3557 AC1-1 and AC1-2 freon low (LP/HP = 10/40psi). Recovered freon and charged to criteria. Checked leak satis, CCU and AHU no leak found. Done by Saini, Haslan, Zulq, Asruddin. 24/8/2023.