Arrived to home and customer said no cool air being produced, checked filter which was new and made sure nothing cutting power to unit, turned AC system on heard fan running outside but not compressor, pressures were equalized, system was installed this year by homeowner, tried putting a hard start kit on system and compressor would still not come on, tested compressor and found compressor had seized, customer has a warranty where he bought unit from and will get parts. System not operational.