Part 4 Function - Daikin VRV II REYQ8MY1B Service Manual

Si39-306
1. Operation Mode ....................................................................................58
2. Basic Control.........................................................................................59
3. Special Control......................................................................................69
4. Protection Control .................................................................................80
5. Other Control.........................................................................................85
6. Outline of Control (Indoor Unit) .............................................................89
Function
2.1 Normal Operation ...................................................................................59
2.2 Compressor PI Control...........................................................................60
2.3 Electronic Expansion Valve PI Control...................................................66
2.4 Cooling Operation Fan Control...............................................................67
2.5 Heat Exchange Mode in Heating Operation or Simultaneous
Cooling / Heating Operation ...................................................................68
3.1 Startup Control .......................................................................................69
3.2 Oil Return Operation ..............................................................................71
3.3 Defrosting Operation ..............................................................................73
3.4 Pressure Equalizing Control...................................................................74
3.5 Pump-down Residual Operation ............................................................75
3.6 Restart Standby......................................................................................76
3.7 Stopping Operation ................................................................................77
3.8 Pressure Equalization Prior to Startup ...................................................79
4.1 High Pressure Protection Control...........................................................80
4.2 Low Pressure Protection Control............................................................81
4.3 Discharge Pipe Protection Control .........................................................82
4.4 Inverter Protection Control .....................................................................83
4.5 STD Compressor Overload Protection...................................................84
5.1 Outdoor Unit Rotation.............................................................................85
5.2 Emergency Operation ............................................................................86
5.3 Demand Operation .................................................................................88
5.4 Heating Operation Prohibition ................................................................88
6.1 Drain Pump Control................................................................................89
6.2 Louver Control for Preventing Ceiling Dirt..............................................91
6.3 Thermostat Sensor in Remote Controller...............................................92
6.4 Freeze Prevention ..................................................................................94
Part 4 Part 4 Part 4 Part 4
Function Function Function Function
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