Service manual

SiBE05-722_C
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 .................................................................... 6
1. Specifications ..........................................................................................7
1.1 Cooling Only.............................................................................................7
1.2 Heat Pump .............................................................................................10
Part 3 Printed Circuit Board Connector Wiring Diagram ........... 15
1. Indoor Unit.............................................................................................16
2. Outdoor Unit..........................................................................................18
2.1 RK(X)S25/35E2V1B ...............................................................................18
2.2 RK(X)S25/35G2V1B...............................................................................20
2.3 RK(X)S25/35G2V1B9, RXS25/35J2V1B, RXS25K3V1B,
RXS35K2V1B.........................................................................................22
Part 4 Function and Control........................................................ 24
1. Main Functions......................................................................................25
1.1 Temperature Control ..............................................................................25
1.2 Frequency Principle................................................................................25
1.3 Airflow Direction Control.........................................................................27
1.4 Fan Speed Control for Indoor Unit .........................................................27
1.5 Program Dry Operation ..........................................................................28
1.6 Automatic Operation...............................................................................29
1.7 Thermostat Control.................................................................................30
1.8 NIGHT SET Mode ..................................................................................31
1.9 HOME LEAVE Operation .......................................................................32
1.10 Inverter POWERFUL Operation .............................................................33
1.11 Clock Setting ..........................................................................................34
1.12 Other Functions......................................................................................35
2. Function of Thermistor ..........................................................................36
3. Control Specification .............................................................................37
3.1 Mode Hierarchy ......................................................................................37
3.2 Frequency Control..................................................................................38
3.3 Controls at Mode Changing / Start-up....................................................40
3.4 Discharge Pipe Temperature Control.....................................................42
3.5 Input Current Control..............................................................................43
3.6 Freeze-up Protection Control .................................................................44
3.7 Heating Peak-cut Control .......................................................................44
3.8 Outdoor Fan Control...............................................................................45
3.9 Liquid Compression Protection Function................................................45
3.10 Defrost Control .......................................................................................46
3.11 Electronic Expansion Valve Control .......................................................47