1552 A/C 1-1 & 2552 A/C 2-1 Coolant Pres ~~~~~ 1552 A/C 1-1 & 2552 A/C 2-1 Coolant Pressure Fault.  1552 A/c 1-1 found LP (20psi) & charged to 40psi. 2552 A/c 2-1 found LP (10psi) & charged to 45psi. Function test both A/c cut in/out operation - OK. No leakage found on A/c pipings/system - OK. Monitor for 2 hrs - OK.  Aminur/Khairul 44066