Found filters were still wet from when indoor coils froze, removed filters to get an accurate charge reading. Added 3lbs of R22 to system #9 refrigerant pressures are appropriate at this time. Leak searched indoor and outdoor coils, did not see any dye or find leak. Leak could be in the line set or dye has not been sitting long enough. Isolated indoor and outdoor coils, will need to return to check pressures and see which one is losing pressure to identify which coil is leaking and then leak search that coil. System is currently off and will not cool at this time.