hey buddy it might be underfilled don't run it too long when you jump the relay you are jumping all the security mesures, leaving your compressor runing with no refrigeran an no oil. Get it to a real shop. A good tech will be able to figure it out.
Recharging the system was the first thing done. I'm thinking it's either the relay or the pressure switch. I'm going to pick up a manual and read up on it.