SiUS04-924
ii Table of Contents
Part 4
Function and Control...........................................................11
1. Main Functions..........................................................................................12
1.1 Frequency Principle.................................................................................... 12
1.2 Airflow Direction Control............................................................................. 14
1.3 Fan Speed Control for Indoor Units............................................................ 15
1.4 Program Dry Function ................................................................................ 16
1.5 Automatic Operation................................................................................... 17
1.6 Thermostat Control..................................................................................... 18
1.7 NIGHT SET Mode ...................................................................................... 19
1.8 ECONO Mode ............................................................................................ 20
1.9 INTELLIGENT EYE.................................................................................... 21
1.10 Inverter POWERFUL Operation................................................................. 23
1.11 Other Functions.......................................................................................... 24
2. Function of Thermistor ..............................................................................26
3. Control Specification .................................................................................27
3.1 Mode Hierarchy.......................................................................................... 27
3.2 Frequency Control...................................................................................... 28
3.3 Controls at Mode Changing / Start-up........................................................ 30
3.4 Discharge PipeTemperature Control.......................................................... 32
3.5 Input Current Control.................................................................................. 33
3.6 Freeze-up Protection Control ..................................................................... 34
3.7 Heating Peak-Cut Control .......................................................................... 34
3.8 Fan Control................................................................................................. 35
3.9 Liquid Compression Protection Function 2................................................. 35
3.10 Defrost Control ........................................................................................... 35
3.11 Electronic Expansion Valve Control ........................................................... 37
3.12 Malfunctions ............................................................................................... 40
3.13 Forced Operation Mode ............................................................................. 41
3.14 Additional Functions................................................................................... 41
3.15 Facility Setting Switch (cooling at low outdoor temperature)...................... 42
Part 5
Operation Manual................................................................44
1. System Configuration................................................................................45
2. Instruction..................................................................................................46
2.1 Remote Controller ...................................................................................... 46
2.2 AUTO · DRY · COOL · HEAT · FAN Operation.......................................... 48
2.3 Adjusting the Airflow Direction.................................................................... 50
2.4 COMFORT AIRFLOW Operation............................................................... 52
2.5 INTELLIGENT EYE Operation ................................................................... 53
2.6 POWERFUL Operation .............................................................................. 55
2.7 OUTDOOR UNIT QUIET Operation........................................................... 56
2.8 ECONO Operation ..................................................................................... 57
2.9 TIMER Operation ....................................................................................... 58
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