SiBE041029ECFunction and Control 18Part 4Function and Control1. Main Functions......................................................................................191.1 Temperature Control ..............................................................................191.2 Frequency Principle................................................................................191.3 Airflow Direction Control.........................................................................211.4 Fan Speed Control for Indoor Unit .........................................................221.5 Program Dry Operation ..........................................................................231.6 Automatic Operation...............................................................................241.7 Thermostat Control.................................................................................251.8 NIGHT SET Mode ..................................................................................261.9 HOME LEAVE Operation .......................................................................261.10 INTELLIGENT EYE Operation ...............................................................281.11 Inverter POWERFUL Operation .............................................................291.12 Clock Setting ..........................................................................................291.13 Other Functions......................................................................................302. Function of Thermistor ..........................................................................313. Control Specification .............................................................................323.1 Mode Hierarchy ......................................................................................323.2 Frequency Control..................................................................................333.3 Controls at Mode Changing / Start-up....................................................353.4 Discharge Pipe Temperature Control.....................................................373.5 Input Current Control..............................................................................383.6 Freeze-up Protection Control .................................................................393.7 Heating Peak-cut Control .......................................................................393.8 Outdoor Fan Control...............................................................................403.9 Liquid Compression Protection Function................................................403.10 Defrost Control .......................................................................................413.11 Electronic Expansion Valve Control .......................................................423.12 Malfunctions ...........................................................................................45