It's out of freon or refrigerant.
the function is to blow the hot air from outside to cool air in side
You have to get it recharged. you have no freeon left which makes the cold air
An air conditioner blows out heat
You might need freon
You are low on coolant to the heater core.
Your A/C needs recharged.
Probably leaking freon.
A.C. circulates air(just like a fan) and turns it cool.
Portable air conditioner will not blow cold air. What to do?
That can happen if they are low on freon.
absolutely because if the compressor is not engaged then it can not produce cold air.
Either you badly need a refrigerant recharge, or your AC compressor is shot. Or both.