Daikin REYQ96 - 3. Special Control

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