When it feels warm while the outdoor condenser fan is turning. It means that the condenser is receiving a signal (please make sure that
the rest of the air conditioners are turned off). It could be that the compressor is turning but had run out of gas (gas leak) or the compressor is not turning at all.
Can you hear the sound of the compressor?
Yes ( you have a system leak, low gas level)
No (either you can’t hear it or else the starter is faulty or the compressor is faulty)