TC reported aircon fault at Front M1 car. Unable to reset. Staff(JUR) checked and confirmed aircon f ault at Front M1 car set #1. Reset-ok. Car is cooling. TC re ported aircon fault at Front M1 car. Unable to reset. Staff( ~~~~~ 1568 TC reported aircon fault unable to reset. Staff(JUR) confirmed 1568 A/C 1 fault. Reset-ok. Car is cooling. TC reported aircon fault at Front M1 car. Unable to reset.  1568 A/c 1 FC 528 (AC 1 inverter failure). In depot, aircon running, no recurrence of inverter fault. Monitored aircon 2 hours, no aircon fault. Aircon able to cut in/out. Checked freon level slightly low LP/HP : 20/100psi. Purge and vacuum freon to LP/HP : 40/110psi. Checked fan and motor current ok.  Aliff/Chan SW/Daniel 45330