All of the sudden when I turned my 2002 Toyota corolla on the air conditioner light was blinking on and off and only hot air came out.

SOURCE: 2001 toyota corolla blows 7.25 fuse when turn on ac

I unplugged the wire, replaced the fuse and started the car. Then, I turned on the ac button and the fuse blew. Do I need to replace the whole compressor with ac clutch or just the ac clutch? Thanks so much.

SOURCE: air conditioner filter toyota corolla 2002

If you have a cabin air filter, it will be located behind the glove box. You need to open the glove box, remove all of the contents, disengage the rod at the right side, and squeeze in on both of the sides towards the center of the box, this defeats the "stops" that keep it from falling out when opened. Let the box door swing down. Right behind the opening left by moving the glove box down & out of the way is the heater box. Look for a rectangular tray, on the box, facing you, pull it straight out towards you. The cabin air filter is located in this tray, if you have one.
No tray = no filter.
Very easy to do this.

SOURCE: 2005 toyota corolla

Just a suggestion, not a car expert, might want to check the charge level of your freeon or the compressor.

SOURCE: 2003 COROLLA S AIR CONDITIONER BLOWS HOT AIR.5

I just fixed mine. My compressor clutch would not engage. The fuse under the dash checked as ok and the freon was fully charged. My compressor clutch wasn't froze, it just wouldn't come on. If this is the case for you, there is a fuse box under your hood, which contains an A/C relay switch. it is the first rectangular block to the left (looking towards your windshield). Mine was white in color. It's about 1" by 1/2" rectangular shape.
Autozone had this part in stock and it cost $27.99 . It was black in color...
Good luck!

SOURCE: CD/Cigarette Lighter Not Working on Toyota Corolla

its the fuse locate between the door and the dash