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SiUS041111
20
Function and Control
Part 4
Function and Control
1. Main Functions..........................................................................................21
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
2. Function of Thermistor ..............................................................................32
3. Control Specification .................................................................................33
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