Daikin RWEYQ26PY1 [72/342] Function general 2

Si30-813

Function 61

Part 4

Function

1. Function General...................................................................................62

1.1 Symbol ...................................................................................................62

1.2 Operation Mode......................................................................................63

1.3 Normal Operation ...................................................................................64

2. Stop.......................................................................................................65

2.1 Stopping Operation ................................................................................65

3. Standby.................................................................................................68

3.1 Restart Standby......................................................................................68

3.2 Crankcase Heater Control......................................................................68

4. Startup Control ......................................................................................69

4.1 Cooling Start-up Control.........................................................................69

4.2 Heating Start-up Control.........................................................................70

5. Normal Control ......................................................................................71

5.1 Compressor Control ...............................................................................71

5.2 Electronic Expansion Valve Control .......................................................73

5.3 Heat Exchange Mode in Heating Operation or

Simultaneous Cooling / Heating Operation ............................................74

6. Protection Control .................................................................................76

6.1 High Pressure Protection Control...........................................................76

6.2 Low Pressure Protection Control............................................................77

6.3 Discharge Pipe Protection Control .........................................................79

6.4 Inverter Protection Control .....................................................................80

6.5 Cooling Fan Control ...............................................................................81

7. Special Operation..................................................................................82

7.1 Oil Return Operation ..............................................................................82

7.2 Oil Return Operation of Water Heat Exchanger .....................................84

7.3 Pump-down Residual Operation Control................................................85

7.4 Refrigerant Drift Prevention....................................................................87

8. Other Control.........................................................................................88

8.1 Outside Unit Rotation .............................................................................88

9. Outline of Control (Indoor Unit) .............................................................89

9.1 Drain Pump Control................................................................................89

9.2 Louver Control for Preventing Ceiling Dirt..............................................91

9.3 Thermostat Sensor in Remote Controller...............................................92

9.4 Thermostat Control While in Normal Operation .....................................94

9.5 Thermostat Control in Dry Operation .....................................................94

9.6 Electronic Expansion Valve Control .......................................................95

9.7 Hot Start Control (In Heating Operation Only)........................................95

9.8 Heater Control ........................................................................................96

9.9 List of Swing Flap Operations ................................................................97

9.10 Freeze Prevention ..................................................................................98