No sleeper a/c ; (

My 1997 peterbilt 387 has good cab a/c but recently I began to try the sleeper a/c and not a link of cold, or hot for that matter, of air comes out. Like the blower is out or something. I looked at the fuse box relay and changed them out. Still nothing. Anyone got any ideas to what might be the problem with it? It's easy to hot in Phoenix to go without a/c.

 

Freon? Nope, just had it charged up. Besides, the From can ac works fine. The sleeper won't even blow any air at all

 

Ice Bucket challenge? Ha, now that's funny.... Funny how? Like I amuse you? Hehehe.

 

Thanx baha. After following through on what you said. Found the wires to the fan were corroded to the point that the ground wire was disconnected from the fan. Only a thread seemed to hold it together. Re wired it and it works fine now. Thanx again for all the replies