Daikin VRV - WII, Service Manual

Page: 3 / 312

SiUS30-604
ii Table of Contents
Part 4 Function............................................................................... 53
1. Function General.......................................................................................55
1.1 Symbol ....................................................................................................... 55
1.2 Operation Mode.......................................................................................... 56
1.3 Normal Operation ....................................................................................... 57
1.4 BS unit & Indoor unit operation mode detail............................................... 58
2. Stop...........................................................................................................59
2.1 Stopping Operation .................................................................................... 59
3. Standby .....................................................................................................61
3.1 Restart Standby.......................................................................................... 61
3.2 Crankcase Heater Control.......................................................................... 61
4. Startup Control ..........................................................................................62
4.1 Cooling Start-up Control............................................................................. 62
4.2 Heating Start-up Control............................................................................. 63
4.3 Pressure Equalizing Control....................................................................... 64
5. Normal Control ..........................................................................................65
5.1 Compressor Control ................................................................................... 65
5.2 Electronic Expansion Valve Control ........................................................... 67
5.3 Heat Exchange Mode in Heating Operation or
Simultaneous Cooling / Heating Operation ................................................ 68
6. Protection Control .....................................................................................70
6.1 High Pressure Protection Control............................................................... 70
6.2 Low Pressure Protection Control................................................................ 71
6.3 Discharge Pipe Protection Control ............................................................. 73
6.4 Inverter Protection Control ......................................................................... 74
6.5 Cooling Fan Control ................................................................................... 75
7. Special Operation......................................................................................76
7.1 Oil Return Operation .................................................................................. 76
7.2 Oil Return Operation of Water Heat Exchanger ......................................... 78
7.3 Pump-down Residual Operation Control.................................................... 79
7.4 Refrigerant Drift Prevention........................................................................ 81
8. Other Control.............................................................................................82
8.1 Outside Unit Rotation ................................................................................. 82
9. Outline of Control (Indoor Unit) .................................................................83
9.1 Drain Pump Control.................................................................................... 83
9.2 Louver Control for Preventing Ceiling Dirt.................................................. 85
9.3 Thermostat Sensor in Remote Controller................................................... 86
9.4 Thermostat Control While in Normal Operation ......................................... 88
9.5 Thermostat Control in Dry Operation ......................................................... 88
9.6 Electronic expansion Valve Control............................................................ 89
9.7 Hot Start Control (In Heating Operation Only)............................................ 89
9.8 Heater Control ............................................................................................ 90
9.9 List of Swing Flap Operations .................................................................... 91
9.10 Freeze Prevention ...................................................................................... 92