1995 Infiniti J30 - HVAC issue

The AC and the heater work on my 1995 J30 infinity but it’s not blowing out the vent you can hear it well but nothing’s hammered out the rents could you tell me what that might be that might be

I am not familiar with your vehicle, but the blend door actuator is probably broken and stuck in the closed position not letting the air flow out the vents.
or your Heat Temperature Climate Control module is defective not allowing the actuator to open.