I completed diagnostics and I shut air handler off at breakers. I replaced wet switch “puck” at secondary drain pan for air handler. I closed valves at heat pump and recovered the refrigerant from line set and evaporator coil - 2 pounds 8 oz of 410a. I removed existing coupler where leak was present and replaced with 12” 7/8 line set with double a swedge ends to couple. I installed new filter dryer.I cleaned up insulation on suction line. I tested system with nitrogen - held 300 psig for 20 mins. I vacuumed system to 1000 microns. Then purged system with nitrogen to remove any moisture or contamination. Put system on vacuum. System holding 400 microns after decay procedure was performed. Tested operation of heat pump to perform proper charge. The system need 6 pounds 13 oz of 410a refrigerant Everything was operational when leaving.
