1660 & 1659 CE reported multiple coolant pressure fault. ~~~~~ 1660 & 1659 CE reported multiple coolant pressure fault.  1660 FC 518 (AC 1-1 HLPS). Found LP/HP : 10/30psi. Purged & vacuumed, able to hold -30psi. Topped up Freon, LP/HP : 35/110psi. No Freon leak found on CCU. Monitor for 2 hrs, no fault recurred. Aircon able to cut in/out. #1660 FC 618 (AC 2-1 HLPS) Found LP/HP : 10/30psi. Purged & vacuumed, able to hold -30psi. Topped up Freon, LP/HP : 35/110psi. No Freon leak found on CCU. Monitor for 2 hrs, no fault recurred. Aircon able to cut in/out. #1659 FC 518 (AC 1-1 HLPS) Found LP/HP : 10/40psi. Purged & vacuumed, able to hold -30psi. Topped up Freon, LP/HP : 35/110psi. No Freon leak found on CCU. Monitor for 2 hrs, no fault recurred. Aircon able to cut in/out.  Daniel/Chan SW/Redzwan 45504