Daikin FTKD50BVM, Service Manual

Page: 3 / 210

Si04-306
ii Table of Contents
1. Introduction .............................................................................................v
1.1 Safety Cautions ........................................................................................v
Part 1 List of Functions ................................................................ 1
1. List of Functions ......................................................................................2
1.1 R410A Series ...........................................................................................2
1.2 R22 Series................................................................................................5
Part 2 Specifications .................................................................... 9
1. Specifications ........................................................................................10
1.1 Cooling Only - R410A Series .................................................................10
1.2 Cooling Only - R22 Series......................................................................13
1.3 Heat Pump - R410A Series ....................................................................17
1.4 Heat Pump - R22 Series ........................................................................22
Part 3 Printed Circuit Board
Connector Wiring Diagram ............................................... 27
1. Printed Circuit Board Connector Wiring Diagram..................................28
1.1 Indoor Unit..............................................................................................28
1.2 Outdoor Unit ...........................................................................................30
Part 4 Function and Control........................................................33
1. Main Functions......................................................................................34
1.1 Frequency Principle................................................................................34
1.2 Power-Airflow Dual Flaps, Wide Angle Louvers and Auto-Swing ..........36
1.3 Fan Speed Control for Indoor Units........................................................37
1.4 Programme Dry Function .......................................................................38
1.5 Automatic Operation...............................................................................39
1.6 Night Set Mode.......................................................................................40
1.7 Intelligent Eye.........................................................................................41
1.8 Home Leave Operation ..........................................................................43
1.9 Inverter Powerful Operation ...................................................................44
1.10 Other Functions......................................................................................45
2. Function of Main Structural Parts..........................................................46
2.1 Function of Thermistor ...........................................................................46
3. Control Specification .............................................................................48
3.1 Mode Hierarchy ......................................................................................48
3.2 Frequency Control..................................................................................49
3.3 Controls at Mode Changing / Start-up....................................................51
3.4 Discharge Pipe Temperature Control.....................................................52
3.5 Input Current Control..............................................................................52
3.6 Freeze-up Protection Control .................................................................53
3.7 Heating Peak-cut Control .......................................................................53
3.8 Fan Control.............................................................................................54
3.9 Moisture Protection Function 2...............................................................54
3.10 Low Hz High Pressure Limit ...................................................................55
3.11 Defrost Control .......................................................................................55
3.12 Electronic Expansion Valve Control .......................................................56