Passenger feedback to staff (BDL) - train was warm. Staff (NEW) checked the whole train and unable t o locate any air-con fault. All cars were cooling. ~~~~~ 3666 Passenger feedback to staff (BDL) - train was warm. Staff (NEW) checked the whole train and unable to locate any air-con fault. All cars were cooling. CE : T414(665/666) check n found car 3666 ac2(cooling mode) taking a longer time to cut-in, but saloon temp ok. Temp 25.5c. The rest of the cars cooling  ok.  3666 Check both AC 2-1 and 2-2 freon pressure LP/HP: 20/90 psi. Purged and vacuum, able to hold at - 30psi. Charged freon to LP/HP: 40/110 psi. No freon leak. AC able to cut in/out. Monitored for 1hr, no abnormalities found. Saloon was cooling.  Aliff/Daniel/Redzwan/Chan SW 45454