Blowing air but not cold

Well lets start by saying that is possibly the "cause", and we certainly know the "effect", now for a solution. With any luck all you did when tipping it was cause a wire to come loose, or the relay/overload on the compressor is not making a good solid connection.

*FIRST; unplug the unit from the wall or shut off the breaker...best to unplug, then you're sure.

*before working on the compressor or sealed system you should verify through your owners manual you will not void any future warranty as some units have a 5yr. sealed system including compressor warranty and others have a 10yr. compressor part only warranty as well.

since the fan is working (you indicated it was in the post by saying it was "blowing air but not cold).

look in back of the unit, at the bottom sits the compressor. on the right side of the compressor may be a plastic cover, it's small and kinda square. This cover houses the start/overload device. if it's held in place by a metal clip, remove it (careful, they can and usually do have sharp edges). once the cover is removed, examine the connection to the compressor, is it loose ? if it IS. awesome. secure it in place and try starting the unit now. if it is NOT loose, take it off and shake it in your hand. does it rattle (like something inside is in a million fragments)? if it does, it's toast, you can find a replacement at an on-line parts depot or a local appliance parts supplier. you may opt for a "all in one" start pack. you should be able to score one (#RCO410) for around $15-$20us. make sure you get the right size. there are some good for residential compressors up to 1/8 hp and others for compressors up to 1/3. you don't want one too powerful or you'll damage the motor windings, but you need one powerful enough the start the compressor under a slight head pressure load.

if the unit has been "seemingly" running, as soon as you unplug it, reach to the back and put your hand on the compressor, careful it potentially could be very hot. that being said, if it is hot, you know the compressor has actually been run, hence "trying" to pump/cool. If that is the case, it is likely the worst case scenario. this would mean you've got oil in the system where you don't want it and the "cap" line is plugged. you can try leaving it unplugged and upright for a long period of time to see if the oil all runs back into the compressor, but likely it will need the system opened and pumped out, and that can be very costly and time consuming.

that should give you a bit of a reference of what may be happening. beyond that I'd seriously consider an expert tech.

good luck