TC reported air-con fault at rear M1 car#02 set. Unable to reset. Staff (YIS) checked and confirmed that rear M1 car #02 set air-con faulty. Reset - ok. Car wa s cooling. ~~~~~ 2624 TC reported A/C 2 fault Unable to reset. Staff(YIS) confirmed A/C 2 faulty. Reset - ok. Car was cooling. CE reported from TIMS, showed 2624 A/C 2-1 fault.  2624 A/c 2-1 fault shown on TIMS. Measured A/c <20 psi. Charged freon up to 40 psi. Function test A/c cut in/out operation - OK. Fault cleared. Further check on condenser unit no freon leak.  Haiqal/Redzwan 43932