Part 4 Function And Control - Daikin FTXM-K Series Service Manual

1. Main Functions......................................................................................16
2. Function of Thermistor ..........................................................................37
3. Control Specification .............................................................................38
15
Function and Control
1.1 Temperature Control ..............................................................................16
1.2 Frequency Principle................................................................................16
1.3 Airflow Direction Control.........................................................................18
1.4 Fan Speed Control for Indoor Unit .........................................................20
1.5 Program Dry Operation ..........................................................................21
1.6 Automatic Operation...............................................................................22
1.7 Thermostat Control.................................................................................23
1.8 NIGHT SET Mode ..................................................................................24
1.9 ECONO Operation .................................................................................24
1.10 INTELLIGENT EYE Operation (20/25 Class).........................................25
1.11 2-Area INTELLIGENT EYE Operation (35/42/50 Class) ........................26
1.12 Inverter POWERFUL Operation .............................................................28
1.13 Clock Setting ..........................................................................................29
1.14 WEEKLY TIMER Operation ...................................................................30
1.15 Other Functions......................................................................................36
3.1 Mode Hierarchy ......................................................................................38
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
3.12 Malfunctions ...........................................................................................50
SiBE041434E
Part 4
Function and Control