No cool main unit. Evaluated system and found compressor run capacitor to be bad. Replaced capacitor under 10yr part warranty. Washed condenser coil, contactor points are good. Checked operation, all amps and pressures are good. Required subcooling is 9 degrees +/- 3 degrees, actual subcooling was 7.9 degrees, superheat was 11.7 degrees. System is operating normally.