TC reported air-con fault. Unable to reset. Staff(YIS) checked and confirmed no fault found. Car wascooling. ~~~~~ 1514 TC reported air-con fault Unable to reset. Staff(YIS) confirmed no fault found. Car was cooling. CE : 1514 ac 1-2 coolant pressure fault unable to clear, keep recurring, temp  26.9.  1514 A/c 1-2 checked freon pressure LP=20psi, HP=90psi. Discharged & vacuum. Pressure able to hold after 30 mins. Charged freon to LP=40psi, HP=120psi. Monitored for 2 hrs - OK.  Irwan/Tarmidzi/Hashim 45475