I didn't see it anywhere. My guess is that the shop took it out so the fan wouldn't come on while they were working on it and then just forgot to put it back in at the end because they were in a hurry. They promised it to be ready at a certain time and then when I got there it still wasn't ready. I read somewhere that if the freon is too low that the compressor will not come on. Could the freon have all leaked out within hours and that be causing the compressor to not come on?