Service manual

SiBE07-724_B
28 Function and Control
Part 4
Function and Control
1. Main Functions......................................................................................29
1.1 Temperature Control ..............................................................................29
1.2 Frequency Principle................................................................................29
1.3 Fan Speed Control for Indoor Units........................................................31
1.4 Program Dry Operation ..........................................................................32
1.5 Automatic Operation...............................................................................33
1.6 Thermostat Control.................................................................................34
1.7 NIGHT SET Mode ..................................................................................35
1.8 HOME LEAVE Operation .......................................................................36
1.9 Inverter POWERFUL Operation .............................................................37
1.10 Other Functions......................................................................................38
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.....................................................45
3.5 Input Current Control..............................................................................46
3.6 Freeze-up Protection Control .................................................................47
3.7 Heating Peak-cut Control .......................................................................47
3.8 Outdoor Fan Control...............................................................................48
3.9 Liquid Compression Protection Function................................................48
3.10 Defrost Control .......................................................................................49
3.11 Electronic Expansion Valve Control .......................................................50
3.12 Malfunctions ...........................................................................................53
3.13 Standby Electricity Saving......................................................................54