Part 4 Function And Control - Daikin B-Series Service Manual

Si04-306E
1. Main Functions......................................................................................44
2. Function of Main Structural Parts..........................................................58
3. Control Specification .............................................................................60
Function and Control
Function and Control
1.1 Frequency Principle................................................................................44
1.2 Power-Airflow Dual Flaps, Wide Angle Louvers and Auto-Swing ..........46
1.3 Fan Speed Control for Indoor Units........................................................47
1.4 Programme Dry Function .......................................................................48
1.5 Automatic Operation...............................................................................49
1.6 Thermostat Control.................................................................................50
1.7 Night Set Mode.......................................................................................51
1.8 INTELLIGENT EYE ................................................................................52
1.9 HOME LEAVE Operation .......................................................................54
1.10 Inverter POWERFUL Operation .............................................................55
1.11 Other Functions......................................................................................56
2.1 Function of Thermistor ...........................................................................58
3.1 Mode Hierarchy ......................................................................................60
3.2 Frequency Control..................................................................................61
3.3 Controls at Mode Changing / Start-up....................................................63
3.4 Discharge Pipe Temperature Control.....................................................64
3.5 Input Current Control..............................................................................64
3.6 Freeze-up Protection Control .................................................................65
3.7 Heating Peak-cut Control .......................................................................65
3.8 Fan Control.............................................................................................66
3.9 Liquid Compression Protection Function 2.............................................66
3.10 Low Hz High Pressure Limit ...................................................................67
3.11 Defrost Control .......................................................................................67
3.12 Electronic Expansion Valve Control .......................................................68
3.13 Malfunctions ...........................................................................................71
3.14 Forced Operation Mode .........................................................................73
3.15 Additional Function.................................................................................73
3.16 Facility Setting Switch (cooling at low outdoor temperature)..................74
Part 4
43