2549 A/C 2-1 coolant pressure fault duri ~~~~~ 2549 A/C 2-1 coolant pressure fault during DT.  2549 A/c 2-1 found coolant fault. Measure freon pressure at 20 psi. Charged in freon till 50 psi. No leak found. Monitor for 1 hr & cut in/out operation - OK.  Au TK/Azmi 43971