TC reported TIMS showed air-con compressor #1-1 fault at car 3542, unable to reset. Car was cooling during train prep. ~~~~~ 3542 TC reported TIMS showed A/C 1-1 fault unable to reset. Car was cooling during train prep. 3542 - TIMS showed coolant pressure 1 and comp. unit 1-1 fault. Unable to clear. Temp.24.4'C.  3542 A/c 1-1 found coolant pressure fault. Removed freon & vacuum system. Re-charged freon to the required criteria. Function check A/c cut in/out operation - OK. No fault indications found on TIMS. Monitor for 1 hr - OK.  Kamarul/Izzul/Tarmidzi/Ridzuwan 44141