Service manual

SiBE061121_A
Function and Control 17
Part 4
Function and Control
1. Main Functions......................................................................................18
1.1 Temperature Control ..............................................................................18
1.2 Frequency Principle................................................................................18
1.3 Airflow Direction Control.........................................................................20
1.4 Fan Speed Control for Indoor Unit .........................................................21
1.5 RADIANT Operation...............................................................................22
1.6 Program Dry Operation ..........................................................................24
1.7 Automatic Operation...............................................................................25
1.8 Thermostat Control.................................................................................26
1.9 NIGHT SET Mode ..................................................................................27
1.10 ECONO Operation .................................................................................28
1.11 Inverter POWERFUL Operation .............................................................29
1.12 Clock Setting ..........................................................................................30
1.13 WEEKLY TIMER Operation ...................................................................31
1.14 Other Functions......................................................................................37
2. Function of Thermistor ..........................................................................39
3. Control Specification .............................................................................40
3.1 Mode Hierarchy ......................................................................................40
3.2 Frequency Control..................................................................................41
3.3 Controls at Mode Changing / Start-up....................................................43
3.4 Discharge Pipe Temperature Control.....................................................44
3.5 Input Current Control..............................................................................45
3.6 Freeze-up Protection Control .................................................................46
3.7 Heating Peak-cut Control .......................................................................46
3.8 Outdoor Fan Control...............................................................................47
3.9 Liquid Compression Protection Function................................................47
3.10 Defrost Control .......................................................................................48
3.11 Outdoor Electronic Expansion Valve Control .........................................49
3.12 Malfunctions ...........................................................................................52