Diagnostic completed. Roof mounted 4t packaged system reading 364psig standing pressure. System significantly overcharged or has been charged with incorrect refrigerant type. System needs full reclaim evacuation and recharge with spec refrigerant type and amount before further diagnostic can be completed. System dates 2007 and repairs will be a significant portion of replacement costs. Further attempts at system repair are not recommended. Estimate provided to property management for both system recharge and system replacement. Awaiting further communication.