Daikin FLKS25BVMB - Part 3 Printed Circuit Board Connector Wiring Diagram; Part 4 Function and Control

SiBE05-513A
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
1.1 Cooling Only.............................................................................................6
1.2 Heat Pump ...............................................................................................8
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 Auto-Swing .............................................................................................20
1.3 Fan Speed Control for Indoor Units........................................................21
1.4 Programme Dry Function .......................................................................22
1.5 Automatic Operation...............................................................................23
1.6 Thermostat Control.................................................................................24
1.7 NIGHT SET Mode ..................................................................................25
1.8 HOME LEAVE Operation .......................................................................26
1.9 Inverter POWERFUL Operation .............................................................27
1.10 Other Functions......................................................................................28
2. Function of Thermistor ..........................................................................29
2.1 Heat Pump Model...................................................................................29
2.2 Cooling Only Model ................................................................................30
3. Control Specification .............................................................................31
3.1 Mode Hierarchy ......................................................................................31
3.2 Frequency Control..................................................................................32
3.3 Controls at Mode Changing / Start-up....................................................34
3.4 Discharge Pipe Control ..........................................................................35
3.5 Input Current Control..............................................................................36
3.6 Freeze-up Protection Control .................................................................37
3.7 Heating Peak-cut Control .......................................................................37
3.8 Fan Control.............................................................................................38
3.9 Liquid Compression Protection Function 2.............................................38
3.10 Defrost Control .......................................................................................39
3.11 Electronic Expansion Valve Control .......................................................40
3.12 Malfunctions ...........................................................................................43
3.13 Forced Operation Mode .........................................................................44
3.14 Additional Function.................................................................................44
3.15 Facility Setting Jumper (cooling at low outdoor temperature) ................45