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SiBE05-722ED

Table of Contents

1. Safety Cautions.......................................................................................v

1.1

Warnings and Cautions Regarding Safety of Workers.............................v

1.2

Warnings and Cautions Regarding Safety of Users............................... vii

2. Used Icons ..............................................................................................x

Part 1 List of Functions ................................................................ 1

1. Functions.................................................................................................2

Part 2 Specifications .................................................................... 7

1. Specifications ..........................................................................................8

1.1

Cooling Only.............................................................................................8

1.2

Heat Pump .............................................................................................11

Part 3 Printed Circuit Board Connector Wiring Diagram ...........17

1. Indoor Unit.............................................................................................18
2. Outdoor Unit..........................................................................................20

2.1

RK(X)S25/35E2V1B ...............................................................................20

2.2

RK(X)S25/35G2V1B...............................................................................22

2.3

RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25K3V1B,
RXS35K2V1B, RXS35L2V1B.................................................................24

Part 4 Function and Control........................................................26

1. Main Functions......................................................................................27

1.1

Temperature Control ..............................................................................27

1.2

Frequency Principle................................................................................27

1.3

Airflow Direction Control.........................................................................29

1.4

Fan Speed Control for Indoor Unit .........................................................29

1.5

Program Dry Operation ..........................................................................30

1.6

Automatic Operation...............................................................................31

1.7

Thermostat Control.................................................................................32

1.8

NIGHT SET Mode ..................................................................................33

1.9

HOME LEAVE Operation .......................................................................34

1.10 Inverter POWERFUL Operation .............................................................35
1.11 Clock Setting ..........................................................................................36
1.12 Other Functions......................................................................................37

2. Function of Thermistor ..........................................................................38
3. Control Specification .............................................................................39

3.1

Mode Hierarchy ......................................................................................39

3.2

Frequency Control..................................................................................40

3.3

Controls at Mode Changing / Start-up....................................................42

3.4

Discharge Pipe Temperature Control.....................................................44

3.5

Input Current Control..............................................................................45

3.6

Freeze-up Protection Control .................................................................46