What is the function of the fan relay in a Thermo King unit?

The fan relay in a Thermo King unit plays a crucial role in managing the operation of the condenser fan. Its primary function is to control when the condenser fan is activated and deactivated based on the cooling needs of the system. By doing so, it helps to ensure that the condenser operates efficiently, removing heat from the refrigerant and maintaining the desired temperature within the unit. This regulation is essential for optimal performance of the refrigeration system, as an appropriately functioning condenser fan maximizes heat exchange and enhances cooling efficiency.