TC reported air-con fault at rear M1 car#1 set. Unable to reset. Staff (CBR) checked and found no a ir-con fault. Car was cooling. ~~~~~ 1525 TC reported A/C 1Unable to reset. Staff (CBR) checked and found no air-con fault. Car was cooling. CE feedback 1525 no A/C fault but saloon warm, temp 27.6'C  1525 A/c 2-1 freon pressure low. Charged freon. No freon leakage found. Function test A/c cut in/out operation - OK. Monitor for 3 hrs, no fault occur. Temp. able to achieve 24'C.  Sarma/Salleh 43904