Performed isolation test on system. Found leaks in 2 of the flare fittings on the longer run to the indoor unit. Disconnected all flares on this side. Cut pipe, re flared and nyloged all of the joints. Pressure tested to 460psi and pressures where holding. Vacuumed system down below 500 microns before charging the system back to factory charge of 3.8 lbs. system is cooling and heating correctly at this time. If the joints that we re did leak this will be under warranty but if another leak springs in a different area this will not be under warranty