What is a low ambient control option used for?
Low ambient control options are used when the condenser or outside portion of the unit will be exposed to cold outside air temperatures of 40°F or lower. For example, if the unit is located in a garage. The low ambient feature cycles the condenser fan on and off based on system pressures to maintain the right balance. The option also includes a compressor crankcase heater that keeps the oil within the system at elevated temperatures so it does not freeze.
