TIMS showed air-con fault at car 3557 set #1. Unable to reset. Staff(YWT) checked and confirmed thatcar 3557 set #1 air-con faulty. Reset - ok. Car was cooling . ~~~~~ TIMS showed air-con fault at car 3557 se   Checked and found #3557 AC 1-1 and AC 1-2 CCU accumulator pipe joint cracked, causing freon to leak. Notification raised to HM for CCU c/o. Notification to HM: 2519411 Done by: Sanip, Koh (30.8.23)