1552 During DT found A/C 1-2 coolant pre ~~~~~ 1552 During DT found A/C 1-2 coolant pressure fault.     Check and found #1552 a/c 1-2 LP=0 & HP=200psi when a/c cut in time.Vaccum out freon to 0 psi and charge freon found the same fault.0020 raise to follow up c/o evaporator unit. Done by Sanip/Koh. 19/09/20 1552 A/C 1-2 Evaporator c/o #1552 a/c 1-2 evaporator change out done.Recharge freon to LP=40psi & HP=110psi.Evaporator function check ok.    Found a/c 1-1 condenser choke during charging time.Isolated U,V,W.Raise not.to RSW for condenser c/o. A/C 1-2 able to cut in/out.Monitor for 2 hours ok. Not: 2201610 raise to RSW for #1552-a/c 1-1 condenser side choke. AHU-New s/n: 032215  Old s/n: 032231 Not: 2201603 raise.