TC reported air-con fault. Unable to reset. Staff(CLE) checked and confirmed that car 2529 set #1 ai r-con faulty. Unable to reset. Car was warm. ~~~~~ To check car 2529 A/C#1 Evaporator system for any freon leak.   Checked and found both 2529 AC#1-1 and AC#1-2 with low freon. Charged up both aircon to acceptable freon level, (LP:40psi/HP:120psi) no more short cycling. Aircon operational for an hour. Conduct soap test and found no leaks at underframe CCU and pipings. Raised OP20 for TWD to check Evaporator system for any freon leak. N.A/haszhan/sankar/24.11.22