TC reported air-con fault. Unable to reset. Staff(BDL) checked and confirmed that Rear M2 car set #1air-con faulty. Reset - ok. Car was warm. ERS-14 ~~~~~ #2604 Ac1 Evaprator choke to c/o TC reported air-con fault. Unable to reset. Staff(BDL) checked and confirmed that Rear M2(2604) car set #1 air-con faulty. Reset - ok. Car was warm. CE checked 2604 & 1604 not A/Cs fault, but saloon warm.(26.7*C & 26.5*C)  #1604 Ac1-1 Lp20 Hp80, charge freon Lp40 Hp110 ok. #1604Ac1-2 Lp10 Hp70, Charge freon L[45 Hp120 ok. #2604 Ac1-1 CCU pipe leak, Notification 2584981 to HM c/o. #2604 Ac1-1 Lp0 Hp200, Ops20 to follow up Evaprator c/o. Done By:Jack/Koh Date:31/03/2024