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Got called to look at a newer install not cooling well. The subcool is running at about 20. Outside temperature only about 75*, high pressure at 280, temp of 67.8 and low at 120# with 63.8*. Also they have a drier on suction side only, believe the line set was not replaced only condenser and AH. will return soon and need a plan of attack. Did not think to check inlet side of drier for pressure differential at the time. Any suggestions would be appreciated. Thanks