Upon my arrival I spoke with the tenants about their concerns with the system not cooling. Performing my diagnostics I found the voltage enhancement system has failed on the outdoor system and the condenser coil is dirty. I spoke with the home owner about my findings and went over repair options. They approved to have HN14A performed today. I installed a new voltage enhancement system, washed the condenser coil then ran a performance and safety testing on the system. I found everything to be operating within manufacture specifications at this time. The home owner does not wish to get maintenance due to the plan to sale the home in the near future.