Replace indoor evap coil. Take apart unit, remove side panels and top. Dissconnected fan. Reclaim refrigerant. Remove indoor evap coil, re nitro braze in new evap coil, pressure test with nitrogen, then vacuum system to below 500 microns. Then Factory weigh in refrigerant charge of 92.8oz of r410a, then reworked everything back up. During install found that system has both a txv, and a fixed orfice metering device. Not normal, but system is working for now. Tested system pressures ok at this time. House cooling. Gave unit a good water bath.