Service manual

SiEBE12-625
Function and Control 55
Part 4
Function and Control
1. Main Functions......................................................................................56
1.1 Frequency Principle................................................................................56
1.2 Power-Airflow Dual Flaps, Wide Angle Louvers and Auto-Swing ..........58
1.3 Operation Starting Control......................................................................60
1.4 Fan Speed Control for Indoor Units........................................................61
1.5 Programme Dry Function .......................................................................62
1.6 Automatic Operation...............................................................................63
1.7 Thermostat Control.................................................................................64
1.8 Night Set Mode.......................................................................................65
1.9 ECONO Mode ........................................................................................66
1.10 INTELLIGENT EYE (Wall Mounted Type only)......................................67
1.11 HOME LEAVE Operation .......................................................................69
1.12 Inverter POWERFUL Operation.............................................................70
1.13 Other Functions......................................................................................71
2. Function of Main Structural Parts..........................................................73
2.1 Main Structural Parts..............................................................................73
2.2 Function of Thermistor ...........................................................................74
3. Control Specification .............................................................................78
3.1 Mode Hierarchy......................................................................................78
3.2 Frequency Control..................................................................................79
3.3 Controls at Mode Changing / Start-up....................................................81
3.4 Discharge Pipe Control ..........................................................................82
3.5 Input Current Control..............................................................................82
3.6 Freeze-up Protection Control .................................................................83
3.7 Heating Peak-cut Control .......................................................................83
3.8 Fan Control.............................................................................................84
3.9 Liquid Compression Protection Function 2.............................................84
3.10 Defrost Control .......................................................................................85
3.11 Low Hz High Pressure Limit...................................................................86
3.12 Electronic Expansion Valve Control .......................................................86
3.13 Malfunctions ...........................................................................................90
3.14 Forced Operation Mode .........................................................................91
3.15 Wiring-Error Check.................................................................................92
3.16 Additional Function.................................................................................94