My air conditioner is not working?

Hello, my car listed above SL is blowing hot air out of the A/C. I have had it charged and it worked only for a few minutes and then went hot again. My check engine light came on about 2 weeks ago and I had it diagnosed and found out the problem was a computer reprogram code it wasn't for my CVT reprogram because about 6 months ago I had the CVT reprogrammed at the Nissan dealer because of the recall. It was for my TCM reprogram (re-flash) I was told by a mechanic that it need to be re-flashed by the Nissan dealer and that it should have been done when they reprogrammed the CVT Recall. I have recently replaced cabin my air filter, not sure if that's completely relevant but wanted that to be included in the description of the problem. So would the re-flash have anything to do with what's going on with my A/C, or is that something that is completely separate? My A/C was blowing hot air prior to the reprogram/recall repair and still is blowing only hot air it used to give off a pungent smell as well. It no longer does but it is been blowing hot air for some time now. My defrost takes forever to work as well when it's raining outside or on days when it's cold. Tried to think of all issues associated with the A/C currently. Thank you to anyone who can help much appreciated.

Air conditioner not cooling it is blowing hot air. My compressor clutch is on.

With the A/C on, the air smells like mildew and the air isn't very cold. Because of the smell, I changed the cabin air filter, hoping that was all that I needed. Within a few hours the slightly cold air turned hot. So I added refrigerant. That did not work at all. The mildew smell has almost cleared but temperature seems to be getting hotter. Any advice? Full disclosure, I am not a DIY person. I don't mind trying but I have a better chance of making things worse than I do fixing it.

Is the entire hose that you add Freon in should be cold or just part of it?

The Freon charge test goes red. Clutch does not engage. Blower was checked and found clean and works well. The compressor control valve was replaced with new one.

Nothing happens. No cold air with A/C placed at max.

Dealer diagnostics pointed to the A/C compressor. It has to be replaced. Exorbitant price. Did not bite it.

But what they did not check is the A/C fuse. Based on video online the fuse box near the battery shows the fuse to be Red 10A which is found on top space at 2nd spot. Not sure if indeed this is the aircon fuse. But when we tested it, it was not blown but does not light up when tested.

Questions:

As described were we able to pinpoint exactly the real A/C fuse?

If it is, then where shall we look to make it work? If that is not the A/C fuse, where can we accurately find it?

Thank you and best regards,
Ray Raz

The AC will not blow cold air after filling it with refrigerant. It's not cycling right. Where is it located and what is the price of the relay?

My A/C compressor clutch is not engaging. It is not locked up. What could be the problem?

There is power to the compressor and there is Freon is full. I want to replace the clutch coil. What is the easiest way to remove the center bolt out of compressor without removing the compressor off of the car?

So A/C was blowing warm air. I took it to a shop and they vacuumed and replace Freon. They also put dye in Freon to check if there was leaks. Five days later it is blowing warm air again? Help if there is no leaks per mechanic.