In air conditioning units, the "Dry Mode" (sometimes labeled as "Dehumidify" or "Dry") is designed primarily to remove excess humidity from the air without significant cooling. In this mode, the AC operates at a lower fan speed, and the cooling compressor may either cycle on and off or not operate at all. The goal is to extract moisture from the air and make the indoor environment more comfortable by reducing the stickiness caused by high humidity.
The reason you can't set a specific temperature in Dry Mode is that the unit is not focused on cooling the air to a particular temperature. Instead, it operates based on the ambient humidity level and works to reach a comfortable humidity level rather than a specific temperature setting.
In cooling mode, the AC unit works to lower the temperature by cooling the air and maintaining it at the desired setpoint temperature. The temperature setting is crucial in cooling mode as it controls the compressor's operation and the fan speed to achieve the target temperature.
In contrast, Dry Mode's priority is humidity control, and the AC unit modulates its operation to remove moisture from the air. If you find the air too cold during Dry Mode, you can manually adjust the fan speed or switch to a higher temperature setting in cooling mode to achieve a balance between dehumidification and cooling. However, keep in mind that Dry Mode's main purpose is not to provide precise temperature control but to improve comfort by reducing humidity levels.