Service manual

SiBE06-708_C
38 Function and Control
Part 4
Function and Control
1. Main Functions......................................................................................39
1.1 Temperature Control ..............................................................................39
1.2 Frequency Principle................................................................................39
1.3 Airflow Direction Control.........................................................................41
1.4 Fan Speed Control for Indoor Unit .........................................................43
1.5 Program Dry Operation ..........................................................................44
1.6 Automatic Operation...............................................................................45
1.7 Thermostat Control.................................................................................46
1.8 NIGHT SET Mode ..................................................................................47
1.9 ECONO Operation .................................................................................48
1.10 Inverter POWERFUL Operation .............................................................49
1.11 Clock Setting ..........................................................................................50
1.12 WEEKLY TIMER Operation ...................................................................51
1.13 Other Functions......................................................................................56
2. Function of Thermistor ..........................................................................57
3. Control Specification .............................................................................58
3.1 Mode Hierarchy ......................................................................................58
3.2 Frequency Control..................................................................................59
3.3 Controls at Mode Changing / Start-up....................................................61
3.4 Discharge Pipe Temperature Control.....................................................63
3.5 Input Current Control..............................................................................64
3.6 Freeze-up Protection Control .................................................................65
3.7 Heating Peak-cut Control .......................................................................65
3.8 Outdoor Fan Control...............................................................................66
3.9 Liquid Compression Protection Function................................................66
3.10 Defrost Control .......................................................................................67
3.11 Electronic Expansion Valve Control .......................................................68
3.12 Malfunctions ...........................................................................................71