Snap :Train Number 2529 air-con not cold ~~~~~ 2529-Check & Found A/c 2-1 & 1-2 valve core leak. Retighten valve core done-Ok. Top up freon within criteria. A/c able to Cut In/Out. Function & Security check done-Ok.    Faisal / Gopal /    Hussein / Nasir / Farhan.  13.11.2023.