SiENBE05-722_A
Table of Contents ii
1. Introduction .............................................................................................v
1.1 Safety Cautions ........................................................................................v
1.2 Used Icons .............................................................................................. ix
Part 1 List of Functions ................................................................ 1
1. Functions.................................................................................................2
Part 2 Specifications .................................................................... 5
1. Specifications ..........................................................................................6
1.1 Cooling Only.............................................................................................6
1.2 Heat Pump ...............................................................................................9
Part 3 Printed Circuit Board Connector Wiring Diagram ........... 12
1. Printed Circuit Board Connector Wiring Diagram..................................13
1.1 Indoor Unit..............................................................................................13
1.2 Outdoor Unit ...........................................................................................15
Part 4 Function and Control........................................................ 21
1. Main Functions......................................................................................22
1.1 Temperature Control ..............................................................................22
1.2 Frequency Principle................................................................................22
1.3 Airflow Direction Control.........................................................................24
1.4 Fan Speed Control for Indoor Units........................................................25
1.5 Program Dry Operation ..........................................................................26
1.6 Automatic Operation...............................................................................27
1.7 Thermostat Control.................................................................................28
1.8 NIGHT SET Mode ..................................................................................29
1.9 HOME LEAVE Operation .......................................................................30
1.10 Inverter POWERFUL Operation.............................................................31
1.11 Other Functions......................................................................................32
2. Function of Thermistor ..........................................................................33
3. Control Specification .............................................................................34
3.1 Mode Hierarchy ......................................................................................34
3.2 Frequency Control..................................................................................35
3.3 Controls at Mode Changing / Start-up....................................................37
3.4 Discharge Pipe Temperature Control.....................................................39
3.5 Input Current Control..............................................................................40
3.6 Freeze-up Protection Control .................................................................41
3.7 Heating Peak-cut Control .......................................................................41
3.8 Outdoor Fan Control...............................................................................42
3.9 Liquid Compression Protection Function................................................42
3.10 Defrost Control .......................................................................................43
3.11 Electronic Expansion Valve Control .......................................................44
3.12 Malfunctions ...........................................................................................47
3.13 Forced Operation Mode .........................................................................48
3.14 Standby Electricity Saving......................................................................48
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