Upon arrival found that system 48 isn’t working again. Turned system on and checked condenser. Found that I didn’t have me fitting to connect gauges, went to get fitting and returned. Found pressures were low. With approval performed a leak search. Checked all the valves, Lines and fittings I could get to and could find leak. Spoke with Steve and he said that the indoor unit can’t be taken off of wall to get to lines. Steve wanted to put Freon back in it and get it going for now until they cut open wall and try to isolate leak. With approval pulled vacuum on system and charge system a little under 3lbs. System holds 40.6oz. Turned system on and system is now working properly for now.