Function And Control - Daikin FTXN09KEVJU Service Manual

1. Main Functions..........................................................................................21
2. Function of Thermistor ..............................................................................32
3. Control Specification .................................................................................33
20

Function and Control

1.1 Temperature Control .................................................................................. 21
1.2 Frequency Principle.................................................................................... 21
1.3 Airflow Direction Control............................................................................. 23
1.4 Fan Speed Control for Indoor Unit ............................................................. 24
1.5 Program Dry Operation .............................................................................. 25
1.6 Automatic Operation................................................................................... 26
1.7 Thermostat Control..................................................................................... 27
1.8 NIGHT SET Mode ...................................................................................... 28
1.9 ECONO Operation ..................................................................................... 29
1.10 Inverter POWERFUL Operation ................................................................. 30
1.11 Other Functions.......................................................................................... 31
3.1 Mode Hierarchy .......................................................................................... 33
3.2 Frequency Control...................................................................................... 34
3.3 Controls at Mode Changing / Start-up........................................................ 36
3.4 Discharge Pipe Temperature Control......................................................... 39
3.5 Input Current Control.................................................................................. 40
3.6 Freeze-up Protection Control ..................................................................... 41
3.7 Heating Peak-cut Control ........................................................................... 41
3.8 Outdoor Fan Control................................................................................... 42
3.9 Liquid Compression Protection Function.................................................... 42
3.10 Defrost Control ........................................................................................... 43
3.11 Electronic Expansion Valve Control ........................................................... 45
3.12 Malfunctions ............................................................................................... 48
SiUS041111
Part 4
Function and Control