It's probably the radiator. Make sure there's enough coolant in the radiator.
Over-obvious answer? Your radiator, or one of your radiator hoses, leaks - badly.
check the coolant level, or, possible stuck thermostat.
This is caused by low coolant levels in most instances.
Your cooling system is empty of coolant and you must have a large leak somewhere.
why does the fan still run on the unit after it cycles is over. but it is blowing hot air not cold
Thermostat is bad
A timer is often used in a heated rear window function to stop the circuit from over heating and blowing a fuse if forgotton about.
Sounds like it may be low on water
i think you cant because your body isn't over heating
because all of your pours are opened due to the hot water and you feel the cold as it is blowing into and over those pours
First thing to check is if it's icing over. If so, low on fridgerent.
The most likely problem is a Head Gasket. Sorry Man.