Patent ID: 8037700

Claim:
An air conditioning system comprising: a first temperature sensor, wherein said first temperature sensor measures a temperature of ambient air outside said air conditioning system; and a controller, wherein said first temperature sensor is in electrical communication with said controller, wherein an algorithm resident on said controller controls said controller to enter a low ambient cooling mode when said temperature of ambient air is less than a first temperature; a compressor; a condenser coil; wherein said condenser coil is in fluid communication with said compressor; a condenser fan, wherein said condenser fan blows air over said condenser coil; a second temperature sensor, wherein said second temperature sensor is in electric communication with said controller, and measures a temperature of said condenser coil, wherein when said controller is in said low ambient cooling mode, said algorithm controls said controller so that: said outdoor fan is on if said compressor is on, when said temperature of ambient air is greater than a third temperature and less than said first temperature; said compressor and said condenser fan are on for a first amount of time when said temperature of ambient air is less than said third temperature; said condenser fan is turned off after said first amount of time elapses, if said temperature of said condenser coil is less than a sum of said temperature of ambient air and a first offset value, or if said condenser fan has been on for more than a second amount of time; said condenser fan is turned back on, if said condenser coil temperature is greater than the sum of said ambient air temperature and a second offset value, or if said condenser temperature is greater than a fourth temperature, or if said condenser fan has been off for more than said second amount of time.