Upon my arrival I performed the approved repairs. I pumped the system down, removed the filter dryer from outside and placed a new piece of 3/8 copper in its place, removed the faulted refrigerant pressure control, installed new refrigerant pressure control, new filter dryer in the attic, flowed nitrogen while brazing, pressure tested with nitrogen, installed new voltage enhancement system and resealed around the coil where I opened it up. Once pressure test showed the system was tight I evacuated the nitrogen and brought the system down to a proper vacuum. After obtaining a vacuum below 500 microns I then introduced the refrigerant back into the system and performed a performance and safety testing. I found the system is operating to manufacture specifications at this time.