Daikin RXG25E2V1B [3/200] Part 3 printed circuit board

Si04-604

ii Table of Contents

1. Introduction .............................................................................................v

1.1 Safety Cautions ........................................................................................v

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

1. List of Functions ......................................................................................2

Part 2 Specifications .................................................................... 5

1. Specifications ..........................................................................................6

Part 3 Printed Circuit Board

Connector Wiring Diagram ............................................... 11

1. Printed Circuit Board Connector Wiring Diagram..................................12

1.1 Indoor Unit..............................................................................................12

1.2 Outdoor Unit ...........................................................................................14

Part 4 Function and Control....................................................... 17

1. Main Functions......................................................................................18

1.1 Frequency Principle................................................................................18

1.2 Power-Airflow Flap, Wide-Angle Louvres and Auto-Swing ....................20

1.3 Operation Starting Control......................................................................21

1.4 Fan Speed Control for Indoor Units........................................................22

1.5 Programme Dry Function .......................................................................23

1.6 Automatic Operation...............................................................................24

1.7 Thermostat Control.................................................................................25

1.8 NIGHT SET Mode ..................................................................................26

1.9 INTELLIGENT EYE ................................................................................27

1.10 Inverter POWERFUL Operation .............................................................28

1.11 Other Functions......................................................................................29

2. Function of Thermistor ..........................................................................30

2.1 Heat Pump Model...................................................................................30

3. Control Specification .............................................................................31

3.1 Mode Hierarchy ......................................................................................31

3.2 Frequency Control..................................................................................32

3.3 Controls at Mode Changing / Start-up....................................................33

3.4 Discharge Pipe Control ..........................................................................35

3.5 Input Current Control..............................................................................35

3.6 Freeze-up Protection Control .................................................................36

3.7 Heating Peak-cut Control .......................................................................36

3.8 Fan Control.............................................................................................37

3.9 Liquid Compression Protection Function 2.............................................37

3.10 Defrost Control .......................................................................................38

3.11 Electronic Expansion Valve Control .......................................................39

3.12 Malfunctions ...........................................................................................42

3.13 Forced Operation Mode .........................................................................43

3.14 Additional Function.................................................................................43