The car has new compressor on it Fully charged. Worked fine now blows hot

Sounds like a possible restriction in the system causing high pressure and inoperative cooling. It's anyone's guess as to why, although - why was the compressor replaced in the first place? Did it experience a failure that could have spread debris throughout the system? If so, likely there is debris in an area causing the pressure to rise. Hands on inspection by a professional is needed.