Daikin VRV Aurora RXLQ-TATJU Series Service Manual page 91

SiUS341802EC
1. Operation Flowchart..................................................................................86
2. Stop Control ..............................................................................................87
3. Standby Control ........................................................................................ 88
4. Startup Control .......................................................................................... 89
5. Basic Control.............................................................................................91
6. Protection Control .....................................................................................98
7. Special Control........................................................................................104
8. Other Control...........................................................................................108
9. Outline of Control (Indoor Unit) ...............................................................109
Part 4 Functions and Control
Functions and Control
2.1 Stop due to Error ........................................................................................ 87
2.2 When System is in Stop Control................................................................. 87
2.3 Slave Unit Stops during Master Unit Control.............................................. 87
3.1 Restart Standby.......................................................................................... 88
3.2 Crankcase Heater Control.......................................................................... 88
4.1 Startup Control in Cooling .......................................................................... 89
4.2 Startup Control in Heating .......................................................................... 90
5.1 Normal Control ........................................................................................... 91
5.2 Compressor PI Control............................................................................... 92
5.3 Operating Priority and Rotation of Compressors........................................ 93
5.4 Compressor Step Control........................................................................... 94
5.5 Electronic Expansion Valve PI Control....................................................... 96
5.6 Step Control of Outdoor Fans .................................................................... 97
6.1 High Pressure Protection Control............................................................... 98
6.2 Low Pressure Protection Control.............................................................. 100
6.3 Discharge Pipe Protection Control ........................................................... 101
6.4 Compressor Body Protection Control....................................................... 102
6.5 Inverter Protection Control ....................................................................... 102
7.1 Pump Down Residual Operation .............................................................. 104
7.2 Oil Return Operation ................................................................................ 105
7.3 Defrost Operation ..................................................................................... 106
7.4 Outdoor Unit Rotation............................................................................... 107
8.1 Backup Operation..................................................................................... 108
8.2 Demand Operation ................................................................................... 108
8.3 Heating Operation Prohibition .................................................................. 108
9.1 Operation Flowchart ................................................................................. 109
9.2 Set Temperature and Control Target Temperature.................................. 113
9.3 Remote Controller Thermistor .................................................................. 115
9.4 Thermostat Control................................................................................... 117
Part 4
84