The answer to 'mini split blowing cold air' is that there could be several common causes, including a refrigerant leak, a faulty compressor, or a problem with the thermostat or control system. Symptoms may include the unit blowing cold air but not effectively cooling the space, or the air coming out feeling lukewarm.
Some potential solutions include checking the refrigerant level, cleaning or replacing the air filters, and ensuring the thermostat is set properly. However, many mini-split issues require professional diagnosis and repair, so it's generally best to call an HVAC technician unless you have extensive experience working on these systems.