Staff(YIS) feedback air-con fault at rear M2 car set #2. Reset - ok. Car was cooling. ~~~~~ 2613 Staff(YIS) feedback A/C 2-1 fault, Reset - ok. Car was cooling. CE : 2613 A/C 2 P/V/F unresettable, temp 27.6. Saloon warm.  2613 A/c 2-1 checked/found to be low on freon LP/HP: 20/80 psi. Discharged and vaccumed, able to hold -30 psi. Charged freon LP/HP: 40/110 psi. A/c able to cut in/out. Monitored for 1 hr, no freon leak. Saloon temperaure able to acheive 24°C.  Aliff/Chan SW 45183