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SiUS39-602
Function
37
Part 4
Function
1. Function General ..................................................................................38
1.1 Symbol ................................................................................................... 38
1.2 Operation Mode ..................................................................................... 39
2. Basic Control.........................................................................................40
2.1 Normal Operation................................................................................... 40
2.2 Compressor PI Control .......................................................................... 41
2.3 Electronic Expansion Valve PI Control .................................................. 45
2.4 Cooling Operation Fan Control .............................................................. 46
2.5 Heat Exchange Mode in Heating Operation or Simultaneous
Cooling / Heating Operation................................................................... 47
3. Special Control......................................................................................48
3.1 Startup Control ....................................................................................... 48
3.2 Oil Return Operation .............................................................................. 50
3.3 Defrosting Operation .............................................................................. 52
3.4 Pressure Equalizing Control .................................................................. 53
3.5 Pump-down Residual Operation ............................................................ 54
3.6 Restart Standby ..................................................................................... 56
3.7 Stopping Operation ................................................................................ 57
4. Protection Control .................................................................................59
4.1 High Pressure Protection Control .......................................................... 59
4.2 Low Pressure Protection Control ........................................................... 60
4.3 Discharge Pipe Protection Control ......................................................... 61
4.4 Inverter Protection Control ..................................................................... 62
4.5 STD Compressor Overload Protection .................................................. 63
5. Other Control ........................................................................................64
5.1 Outdoor Unit Rotation ............................................................................ 64
5.2 Emergency Operation ............................................................................ 65
5.3 Demand Operation................................................................................. 67
5.4 Heating Operation Prohibition ................................................................ 67
6. Outline of Control (Indoor Unit) .............................................................68
6.1 Drain Pump Control ............................................................................... 68
6.2 Thermostat Sensor in Remote Controller .............................................. 70
6.3 Freeze Prevention.................................................................................. 72
Summary of Contents for REYQ72
Page 35: ...Specifications SiUS39 602 24 Specifications...
Page 121: ...Field Setting SiUS39 602 110 Test Operation...
Page 129: ...Troubleshooting by Remote Controller SiUS39 602 118 Troubleshooting...
Page 225: ...Troubleshooting OP Unified ON OFF Controller SiUS39 602 214 Troubleshooting...
Page 232: ...SiUS39 602 Piping Diagrams Appendix 221 1 3 BS Unit BSVQ36MVJU BSVQ60MVJU 4D045338...
Page 235: ...Wiring Diagrams for Reference SiUS39 602 224 Appendix REYQ144 168 192MTJU C 3D050354A...
Page 240: ...SiUS39 602 Wiring Diagrams for Reference Appendix 229 2 4 BS Unit BSVQ36M 60MVJU 3D045069A...
Page 249: ...Example of Connection R 410A Type SiUS39 602 238 Appendix...
Page 255: ...Method of Replacing The Inverter s Power Transistors and Diode Modules SiUS39 602 244 Appendix...
Page 265: ...Precautions for New Refrigerant R 410A SiUS39 602 254 Precautions for New Refrigerant R 410A...
Page 269: ...SiUS39 602 iv Index...