AC on, it suddenly began blowing hot air

When ac is turned on, it blows "hot" air. I pushed the compressor button in and it stays lit. I have the slide control all the way on blue for cold, nothing but hot hot air.

So the A/C normally works really good blows hard and cold, but for the second time in two months it has went from blowing cold to hot while driving. If I stop and turn it off then turn it on, it will go back to blowing cold.

What gives, I was thinking one of the actuators maybe?

Thanks Ken, I just ordered the part will be changing it asap. Alabama is too hot ro be hanging my head out the window stuck in traffic

Even with outside temp of 71 degrees truck was blowing hot air this morning. Original battery gave up Friday and replaced it Saturday

Best I can tell. I checked it this morning and it is not making any funny noises, but I can't tell if it the clutch is engaging.

Even with the vent on it was blowing hot/warm air. Outside temperature this morning was 71 degrees.

I reconnected the battery and every thing is working like it used to.

One day the AC was working great and then the next day it was blowing hot. The compressor is cycling on and off. I checked the inlet blend door actuator and it seems to be working, I say this because as I turn it from hot to cold I can feel the actuator turning when I place my finger on it. I jumped the low pressure switch and still no cold air. The compressor is clicking on and off, not sure if it is doing it too fast or not because I am not sure how fast that cycle is suppose to be. I put a gauge on the low side, the only gauge I own is from one of those cans you buy from the auto part stores, and the gauge fluctuates back and forth from side to side. I also reset the AC control module by taking out the fuse and following a outlined sequence of turning the key on and off. Also, last year the system was vacuumed down and the orifice tube was replaced. Not sure if this will help but at the accumulator one line is cold and the other is not.

I need some guidance as to what could be the problem. I would like to try to fix it on my own if I can so I can save the money of going to a shop.

I ran the truck and turned the A/C on and have attached a picture of the lines and where it was hot and where it was cold. I hope this helps you help me. Thank you

So does this mean there is a leak in the system? I know the system was vacuumed down and recharged last year to replace the orifice tube. It should not have to be added to every year does it?

Hello, sorry it took so long to reply back but I did find the problem. There was in fact a leak. Seems that when it was serviced some dirt got into the valve where you add refrigerant. I noticed there was a puddle of what looked like green fluid. I contacted the ac shop and the guy had me come by and said yep that's where dye was added and is leaking out of the system. He put a new valve in and charged it for 30 bucks. Blowing cold as ice now. Thank you for all your help!