1666 - A/C 1-1 COOLANT PRESSURE FAULT.(F ~~~~~ 1666 - A/C 1-1 COOLANT PRESSURE FAULT.(FC 518 A/C 1 HLPS1)  1666 A/c 1-1  FC 518 (AC 1 HLPS 1) Checked and found freon pressure low. Purge and vacuum freon, able to hold -30psi. No signs of freon leaking. Charge freon, LP/HP : 40/110psi. AC able to cut in/out. Monitored for 2hrs. No fault reoccurred.  Lee KH/Wong/Aqil/Shamil 45389