TC reported air-con fault. Unable to reset. Staff(NEW) checked and confirmed that Front M1 car set # 2 air-con faulty. Unable to reset. Car was a bit warm. ~~~~~ 1621 TC reported air-con fault Unable to reset. Staff(NEW) confirmed A/C 2 faulty Unable to reset. Car was a bit warm. CE:1621 ac2 power, vent n fault unresettable. temp 27.0. Saloon warm.  1621 A/c 2-2 checked/found compressor motor shorted. Unit was isolated & tagged. #1621 CMOCR-2 wires 305 U/V/W were removed & insulated with vinyl tape. Notif 2365437 was raised for #1641 A/c 2-2 U/F CCU c/o.  Hanafi/Chan SW 44638 Name                          :Chan SW Date of Occurrence            :18.03.22 Last Service Date             :  EMU / Equipment / Location    :1621 / A/CON 2-2 Equipment Serial No. (if any) :  Description of fault / cause  :Vent fault no cooling Measurements (if any)         :Meggaring failed Required Rectification        :Replaced CCU unit.