1628 Aircon 1-1 coolant fault ~~~~~ 1628 Aircon 1-1 coolant fault     #1628 A/C 1-1 found LP coupling freon leak.Found copper washer steel wire was not removed before installation,causing improper coupling.Removed the wire and top up freon,monitoring cut in/out-ok. Done by Kumar/Jack/Sateesh/Koh. 04/02/20