92' Infiniti Q45 A/C blowing hot air

Hello, If there is ever a need to add refrigerant, the system has a leak and must be repaired. For this reason, I will never understand why they sell refrigerant and refrigerant quick fixes to consumers. As a consumer, all you can do is make sure that the issue is not electronic or electrical, then either purchase an extremely expensive evacuation, recovery, and refill machine, or take it in for repair. If you overfilled it, it will leak out again shortly, and your air will work until more leaks out, but I encourage you to have it diagnosed with dye, repaired, and filled professionally.