TC reported air-con fault. Unable to reset. Staff( NEW) checked and confirmed no air-con fault found . No abnormailities, car was cooling. ~~~~~ 3685 TC reported air-con fault Unable to reset. Staff( NEW) confirmed no air-con fault found. No abnormailities, car was cooling. CE: 3686 ac ok, 3685 ac 1-1 n ac 2-2 coolant pressure fault unresettable, temp 25.3*C.  3685 A/c 1-1 & 2-2 found having low PSI of 20 psi. Charged in freon for both A/c units to 40 psi. No freon leak found at condenser area. A/c fault on TIMS cleared. Cooling temp. able to achieve 24*C.     Farid/Rajamohan 44636