Received a call that the mini split system for the apartment was not operating, upon arrival I switched the unit on and confirm that both indoor units started up and the fans were blowing. Went outside to see if the condenser was operating, found that it started up but after a few seconds it shut down. I installed my pressure probes and found that the machine was basically out of refrigerant. I spoke with the homeowner and gave them an option on either recharging the system or performing a leak test, along with the neighbor, it was decided that the best action would be to add refrigerant and see if we could get the unit through the summer due to how badly rotted the indensor is due to the salt air.