SiBE041101
Table of Contents ii
1. Introduction ............................................................................................ vi
1.1 Safety Cautions ....................................................................................... vi
1.2 Used Icons ...............................................................................................x
Part 1 List of Functions ................................................................ 1
1. Functions.................................................................................................2
1.1 Cooling Only.............................................................................................2
1.2 Heat Pump ...............................................................................................3
Part 2 Specifications .................................................................... 4
1. Specifications ..........................................................................................5
1.1 Cooling Only.............................................................................................5
1.2 Heat Pump ...............................................................................................7
Part 3 Printed Circuit Board Connector Wiring Diagram ........... 10
1. Indoor Unit.............................................................................................11
2. Outdoor Unit..........................................................................................14
2.1 RK(X)S20/25/35J2V1B...........................................................................14
2.2 RK(X)S42J2V1B.....................................................................................16
2.3 RK(X)S50J2V1B.....................................................................................18
Part 4 Function and Control........................................................ 20
1. Main Functions......................................................................................21
1.1 Temperature Control ..............................................................................21
1.2 Frequency Principle................................................................................21
1.3 Airflow Direction Control.........................................................................23
1.4 Fan Speed Control for Indoor Units........................................................24
1.5 Program Dry Operation ..........................................................................25
1.6 Automatic Operation...............................................................................26
1.7 Thermostat Control.................................................................................27
1.8 NIGHT SET Mode ..................................................................................28
1.9 ECONO Operation .................................................................................29
1.10 2-Area INTELLIGENT EYE Operation ...................................................30
1.11 Inverter POWERFUL Operation .............................................................32
1.12 Other Functions......................................................................................33
2. Function of Thermistor ..........................................................................34
3. Control Specification .............................................................................35
3.1 Mode Hierarchy ......................................................................................35
3.2 Frequency Control..................................................................................36
3.3 Controls at Mode Changing / Start-up....................................................38
3.4 Discharge Pipe Temperature Control.....................................................40
3.5 Input Current Control..............................................................................41
3.6 Freeze-up Protection Control .................................................................42
3.7 Heating Peak-cut Control .......................................................................42
3.8 Outdoor Fan Control...............................................................................43
3.9 Liquid Compression Protection Function................................................43
3.10 Defrost Control .......................................................................................44
3.11 Electronic Expansion Valve Control .......................................................45
3.12 Malfunctions ...........................................................................................48
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