This can be the same for vehicles and home a/c systems, and it means that the drain is clear and free of any debris........
Its normal for this to work this way...
Car not blowing air or heat
You mean the outside unit is running and blowing but the inside unit is not blowing? Shut it off! Who ain't blowing? Elaborate please..
There are a few reasons why a central air unit is not blowing cold air. The coils may be dirty, the unit may need freon, or the thermostat could be broken.
why does the fan still run on the unit after it cycles is over. but it is blowing hot air not cold
a long time
The most common problem would be a lack of the coolant in the A/C unit. The other would be a broken condenser.
If the air flow is low, a primary filter or return register filters could be clogged, or your blower unit could have a faulty fan. If the air is warm then your condenser unit may need to be recharged/checked for leaks.
Your outside AC unit may be blowing cold air because it is functioning properly and is working to cool the air before it enters your home. This is a normal operation of an air conditioning system.
If your air conditioner is running outside by not blowing cold air inside through your vent, your indoor coil is frozen. You will need to turn everything off and allow the unit to thaw out.
I suppose when you say " the air stops blowing but the unit is still running" you mean the air that is blowing is not cool. If so, then the thermostat is faulty or needs to be set a lower temperature setting. If the unit blows cool for a few minutes and not cool for a few minutes, then cool again, etc. (called short-cycling), the unit is low on freon.
Inside the unit under the evaporator coil. The condensate drain line is attached to it.
sounds like t stat is programmed wrong, reversing valve coil is bad or reversing valve is stuck.