Sequential hot gas reheat system in an air conditioning unit

An air-conditioning unit comprising a compression refrigeration circuit defined by a compressor, a condenser, an expansion valve, and an evaporator that are arranged in a closed loop, the air conditioning unit further comprising:

• a sequential hot gas reheat system configured to regulate a moisture content in conditioned air, the sequential hot gas reheat system comprising:
• a reheat coil that is disposed adjacent to the evaporator and comprising an inlet and an outlet, the inlet being fluidly-coupled to a three-way control valve via a reheat input line and the outlet being fluidly-coupled to a discharge line via a reheat exit line,
• wherein the discharge line fluidly couples the three-way control valve to the condenser, and wherein another discharge line fluidly couples the three-way valve to the compressor;
• a bypass line that fluidly couples the outlet of the reheat coil to an input end of the expansion valve;
• a bypass control valve that is disposed in the bypass line;
• a reheat control valve that is disposed in the reheat exit line;
• an ambient temperature sensor that is configured to measure an ambient temperature;
• and
• a controller that is communicatively coupled to the bypass control valve, the reheat control valve, and the ambient temperature sensor to selectively control a flow of refrigerant through the bypass line such that the refrigerant exiting the reheat coil bypasses the condenser to the expansion valve when the ambient temperature is greater than or equal to a cut-off temperature that is indicative of a high ambient temperature condition.