Air conditioning systems and methods with cooling capacity modulation via fixed pump operation and variable condenser fan operation

A cooling system comprising:

• a first pump module configured to control a first pump to pump a first cooling fluid through a first cooling circuit;
• a first condenser fan module configured to control a first condenser fan to transfer air across a first condenser of the first cooling circuit;
• and
• at least one control module configured to, while operating in a pumped refrigerant economizer mode or a mixed mode, determine a requested call for cooling percentage,
• wherein
• the first pump module is configured to activate the first pump if the requested call for cooling percentage is greater than or equal to a first call for cooling percentage, and
• the first condenser fan module is configured to (i) if the requested call for cooling percentage is greater than or equal to the first call for cooling percentage, at least one of activate the first condenser fan or operate the first condenser fan at least at a first minimum speed, and (ii) based on the requested call for cooling percentage, adjust a speed of the first condenser fan between the first minimum speed and a first maximum permitted speed to provide the requested call for cooling percentage.