TC reported air-con fault. Unable to reset. Staff(BGB) checked and confirmed that Front M2 car set # 2 air-con faulty. Reset - ok. Car was cooling. ~~~~~ TC reported air-con fault. Unable to reset. Staff(BGB) checked and confirmed that Front M2(3621) car set #2 air-con faulty. Reset - ok. Car was cooling.  Found #3621 AC1-1 was low in freon. Top up freon to LP 40 HP 120 Done by: Zulfikri and Yusof. 28/05/2024.