System not working upon arrival. Unit making buzzing noise. Motor booster had failed. Upon furthur inspection, found dead rodent in ac that had chewed on the wire harness for low voltage circuit. Also found electrical disconnect ground wire almost broke in half. Also no fuses in disconnect, there was copper pipes instead. Overall a lot of mechanical issues on ac and also unaware if there is any refrigeration issues with it sense it won’t run. Replacement is the best route. Install scheduled for tomorrow morning.