when I started my truck the air conditioner won't get cold;could it be a fuse?

no, 38,000 miles. The ac worked great yesterday-today when I started the truck and turned on air-the air wont get cold. Could it be a fuse?

Wow... ok, fuse would be a good place to start... look in owners manual for location/function of all fuses!

I finally got my truck (2012 Ford F-150 Super Crew) in to the dealership. I left the truck at the dealership (for three weeks!). The air conditioner wasn't working; the reason being that the wires had overheated and melted. They said they would need to replace the wiring harness. Of course at 38,000 miles-the warranty was up (barely) and I didn't buy the "Extended Warranty". After much discussion (heated on my side) we came to an agreement; They (the dealership)replace the wiring harness and I pay $750; Ford picks up the rest of the cost since my warranty was just barely out. The good news: they rented me a car for the three weeks mine was in the shop: a 2015 Chevy Tahoe - nice! The bad news: shortly after I picked up my truck, the "Service Advance Track" light started coming on. It comes on when I'm driving at normal speed, making a right turn and recently while sitting at a red light. Took it in once and they couldn't get the light to come on and said they couldn't do anything. I've called about 20-25 times trying to talk to the service manager and he doesn't take my calls or return them. Any idea if the light coming on is related to the wiring harness? I have a two year warranty on the wiring harness replacement (supposedly). I was told by a different source that at 38,000 miles, the Advance Track should not need to be serviced. Why else would the light come on? By the way, I bought my Ford F-150 at JOE COOPER FORD IN TULSA, OK! Their service department is a BIG disappointment and very unprofessional!!

My Dad checked it (and fuses) for me. They're all good. The compressor clutch isn't kicking in so I'm taking it in to the dealership tomorrow; I needed an oil change anyway, so I might as well make a day of it! Thanks for answering my questions.