Main Functions SiUS04-924_A
Function and Control 15
Frequency Limits The following functions regulate the minimum and maximum frequency:
Forced Cooling
Operation
Refer to page 183 for detail.
1.3 Airflow Direction Control
Power-Airflow
Dual Louvers
The large louvers send a large volume of air downward to the floor and provide an optimum control
in cooling, dry, and heating mode.
Cooling / Dry Mode
During cooling or dry mode, the louvers retract into the indoor unit, allowing cool air to be blown
across the whole room.
Heating Mode
During heating mode, the large louvers direct airflow downward to spread the warm air to the entire
room.
Wide-Angle Fins The fins, made of elastic synthetic resin, provide a wide range of airflow that guarantees a
comfortable air distribution.
Auto-Swing The following table explains the auto swing process for cooling, dry, heating, and fan:
Frequency Functions
Low Four-way valve operation compensation. Refer to page 31.
High Compressor protection function. Refer to page 31.
Discharge pipe temperature control. Refer to page 32.
Input current control. Refer to page 33.
Freeze-up protection control. Refer to page 34.
Heating peak-cut control. Refer to page 34.
Defrost control. Refer to page 36.
Louvers (horizontal blades) with Vertical Swing (up and down) Fins (vertical blades)
with Horizontal Swing
(right and left)
Cooling / Dry Heating Fan
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