SiUS04-702
Main Functions
Function and Control
19
1. Main Functions
Note:
See the list of functions for the functions applicable to different models.
1.1
Frequency Principle
Main Control
Parameters
The compressor is frequency-controlled during normal operation. The target frequency is set by the
following 2 parameters coming from the operating indoor unit:
The load condition of the operating indoor unit
The difference between the room temperature and the set temperature
Additional
Control
Parameters
The target frequency is adapted by additional parameters in the following cases:
Frequency restrictions
Initial settings
Forced cooling operation
Inverter Principle
To regulate the capacity, a frequency control is needed. The inverter makes it possible to vary the
rotation speed of the compressor. The following table explains the conversion principle:
Drawing of
Inverter
The following drawing shows a schematic view of the inverter principle:
Phase
Description
1
The supplied AC power source is converted into the DC power source for the present.
2
The DC power source is reconverted into the three phase AC power source with variable
frequency.
When the frequency increases, the rotation speed of the compressor increases resulting
in an increased refrigerant circulation. This leads to a higher amount of the heat
exchange per unit.
When the frequency decreases, the rotation speed of the compressor decreases
resulting in a decreased refrigerant circulation. This leads to a lower amount of the heat
exchange per unit.
50 Hz
60 Hz
Refrigerant circulation rate (high)
Amount of heat
exchanged air (large)
Amount of heat
exchanged air (small)
AC
po
w
er
freq=
constant
DC
po
w
er
Amount of heat
exchanged air (large)
Amount of heat
exchanged air (small)
high f
low f
freq=variable
capacity=
variable
Refrigerant circulation rate (low)
high speed
low speed
(R2812)
Summary of Contents for FTXS09DVJU
Page 1: ...SiUS04 702 Applied Models z Inverter Pair Heat Pump Inverter Pair Wall Mounted Type D Series...
Page 12: ...SiUS04 702 List of Functions 1 Part 1 List of Functions 1 List of Functions 2...
Page 14: ...SiUS04 702 Specifications 3 Part 2 Specifications 1 Specifications 4...
Page 76: ...SiUS04 702 Instruction Operation Manual 65 2 2 FTXS09 12DVJU 2 2 1 Names of Parts...
Page 77: ...Instruction SiUS04 702 66 Operation Manual...
Page 78: ...SiUS04 702 Instruction Operation Manual 67...
Page 79: ...Instruction SiUS04 702 68 Operation Manual 2 2 2 Preparation before Operation...
Page 80: ...SiUS04 702 Instruction Operation Manual 69...
Page 81: ...Instruction SiUS04 702 70 Operation Manual...
Page 82: ...SiUS04 702 Instruction Operation Manual 71 2 2 3 AUTO DRY COOL HEAT FAN Operation...
Page 83: ...Instruction SiUS04 702 72 Operation Manual...
Page 84: ...SiUS04 702 Instruction Operation Manual 73 2 2 4 Adjusting the Airflow Direction...
Page 85: ...Instruction SiUS04 702 74 Operation Manual...
Page 86: ...SiUS04 702 Instruction Operation Manual 75 2 2 5 POWERFUL Operation...
Page 87: ...Instruction SiUS04 702 76 Operation Manual 2 2 6 OUTDOOR UNIT QUIET Operation...
Page 88: ...SiUS04 702 Instruction Operation Manual 77 2 2 7 HOME LEAVE Operation...
Page 89: ...Instruction SiUS04 702 78 Operation Manual...
Page 90: ...SiUS04 702 Instruction Operation Manual 79 2 2 8 INTELLIGENT EYE Operation...
Page 91: ...Instruction SiUS04 702 80 Operation Manual...
Page 92: ...SiUS04 702 Instruction Operation Manual 81 2 2 9 TIMER Operation...
Page 93: ...Instruction SiUS04 702 82 Operation Manual...
Page 94: ...SiUS04 702 Instruction Operation Manual 83 2 2 10 Care and Cleaning...
Page 95: ...Instruction SiUS04 702 84 Operation Manual...
Page 96: ...SiUS04 702 Instruction Operation Manual 85...
Page 97: ...Instruction SiUS04 702 86 Operation Manual...
Page 98: ...SiUS04 702 Instruction Operation Manual 87...
Page 99: ...Instruction SiUS04 702 88 Operation Manual...
Page 100: ...SiUS04 702 Instruction Operation Manual 89 3P141693 1K...
Page 101: ...Instruction SiUS04 702 90 Operation Manual 2 3 FTXS15 18 24DVJU 2 3 1 Names of Parts...
Page 102: ...SiUS04 702 Instruction Operation Manual 91...
Page 103: ...Instruction SiUS04 702 92 Operation Manual...
Page 104: ...SiUS04 702 Instruction Operation Manual 93 2 3 2 Preparation before Operation...
Page 105: ...Instruction SiUS04 702 94 Operation Manual...
Page 106: ...SiUS04 702 Instruction Operation Manual 95...
Page 107: ...Instruction SiUS04 702 96 Operation Manual 2 3 3 AUTO DRY COOL HEAT FAN Operation...
Page 108: ...SiUS04 702 Instruction Operation Manual 97...
Page 109: ...Instruction SiUS04 702 98 Operation Manual 2 3 4 Adjusting the Airflow Direction...
Page 110: ...SiUS04 702 Instruction Operation Manual 99...
Page 111: ...Instruction SiUS04 702 100 Operation Manual 2 3 5 POWERFUL Operation...
Page 112: ...SiUS04 702 Instruction Operation Manual 101 2 3 6 OUTDOOR UNIT QUIET Operation...
Page 113: ...Instruction SiUS04 702 102 Operation Manual 2 3 7 HOME LEAVE Operation...
Page 114: ...SiUS04 702 Instruction Operation Manual 103...
Page 115: ...Instruction SiUS04 702 104 Operation Manual 2 3 8 INTELLIGENT EYE Operation...
Page 116: ...SiUS04 702 Instruction Operation Manual 105...
Page 117: ...Instruction SiUS04 702 106 Operation Manual 2 3 9 TIMER Operation...
Page 118: ...SiUS04 702 Instruction Operation Manual 107...
Page 119: ...Instruction SiUS04 702 108 Operation Manual 2 3 10 Care and Cleaning...
Page 120: ...SiUS04 702 Instruction Operation Manual 109...
Page 121: ...Instruction SiUS04 702 110 Operation Manual...
Page 122: ...SiUS04 702 Instruction Operation Manual 111 2 3 11 Troubleshooting...
Page 123: ...Instruction SiUS04 702 112 Operation Manual...
Page 124: ...SiUS04 702 Instruction Operation Manual 113...
Page 125: ...Instruction SiUS04 702 114 Operation Manual 3P141693 2K...
Page 191: ...Check SiUS04 702 180 Service Diagnosis...
Page 293: ...Others SiUS04 702 282 Others...
Page 305: ...SiUS04 702 vi Index...