SiBE04-809Function and Control 13Part 4Function and Control1. Main Functions......................................................................................141.1 Frequency Principle................................................................................141.2 Power-Airflow Flap, Wide-Angle Louvres and Auto-Swing ....................161.3 Operation Starting Control......................................................................171.4 Fan Speed Control for Indoor Units........................................................181.5 Programme Dry Function .......................................................................191.6 Automatic Operation...............................................................................201.7 Thermostat Control.................................................................................211.8 NIGHT SET Mode ..................................................................................221.9 INTELLIGENT EYE ................................................................................231.10 Inverter POWERFUL Operation .............................................................241.11 Other Functions......................................................................................252. Function of Thermistor ..........................................................................272.1 Heat Pump Model...................................................................................273. Control Specification .............................................................................283.1 Mode Hierarchy ......................................................................................283.2 Frequency Control..................................................................................293.3 Controls at Mode Changing / Start-up....................................................313.4 Discharge Pipe Temperature Control.....................................................343.5 Input Current Control..............................................................................353.6 Freeze-up Protection Control .................................................................363.7 Heating Peak-cut Control .......................................................................373.8 Fan Control.............................................................................................383.9 Liquid Compression Protection Function 2.............................................383.10 Defrost Control .......................................................................................383.11 Electronic Expansion Valve Control .......................................................403.12 Malfunctions ...........................................................................................433.13 Forced Operation Mode .........................................................................443.14 Additional Function.................................................................................44