3679 A/C 1-2 DT check found coolant faul ~~~~~ 3679 A/C 1-2 DT check found coolant fault.  3679 A/c 1-2 found LP = 10 psi HP = 60 psi. Charged freon to LP = 40 psi HP = 110 psi. No leakage found on A/c pipings. Function check A/c cut in/out operation - OK. Monitor for 2 hrs - OK.  Aminur/Zaidi 44429