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If the compressor is running and drawing about 25% of its full load amp rating, the system either has a refrigerant leak and is way low on refrigerant (90% chance if that is the case). ... or the rotor in the compressor has broken (thats about a 2% chance)... the other 7% chance is that the compressor is not actually running..(use a clamp around type amp meter to verify that).
We can begin there, tell me what you can discover...there is no time limit on this question.