Performed leak search and was unable to locate. Blockage in the TXV. System is putting itself in a vac when adding. Will order filter drier and txv. Check warranty. Thank you for always choosing Total Air! Model- RQPM-A043JK000A UA Serial- W261833210 Called out today to replace txv and filter drier. Recovered refrigerant, removed txv and filter drier. Sealed system and performed a pressure test. Recharged system and watched pressure for about 30 minutes, system is operating properly at this time. Clients are aware that it will drop at about a degree an hour.