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  • Check refrigerant level
  • Inspect condenser fan motor
  • Check contactor points
  • Clean/replace standard air filter
  • Check squirrel cage
  • Check thermostat for proper calibration
  • Check low voltage wiring
  • Check disconnect box
  • Check compressor
  • Tighten all electrical connections
  • Inspect condenser coil
  • Check evaporator fan motor
  • Check temperature drop at coil
  • Check fan relay
  • Inspect plenum
  • Check breakers