1648-AC 1-1 Coolant Fault.To Retify ~~~~~ 1648 - AC 1-1 Coolant Fault.  1648 A/c 1-1 checked/found no A/c related FC. Found freon pressure out of criteria. Before charging freon : HP = 70 psi, LP = 15 psi. After charging freon : HP = 110 psi, LP = 40 psi. Function check cut-in/out operation - OK. Checked/found no leakage at CCU. OPS 20 raised to check evaporator for any leaks.  Akira/Kiran 45041 to check for evap unit leak     Check on EMU #1648 Evaporator tubing ok. No sign of leaking.Freon level ok. Check by Sufhian/Fadzzal. 02/05/23