SiE39-404
Function 73
Part 4
Function
1. Function general ...................................................................................74
1.1 Symbol ...................................................................................................74
1.2 Operation Mode......................................................................................75
2. Basic Control.........................................................................................76
2.1 Normal Operation...................................................................................76
2.2 Compressor PI Control...........................................................................77
2.3 Electronic Expansion Valve PI Control...................................................83
2.4 Cooling Operation Fan Control...............................................................84
3. Special Control......................................................................................85
3.1 Startup Control .......................................................................................85
3.2 Oil Return Operation ..............................................................................86
3.3 Defrosting Operation ..............................................................................88
3.4 Pump-down Residual Operation ............................................................89
3.5 Restart Standby......................................................................................90
3.6 Stopping Operation ................................................................................91
3.7 Pressure Equalization prior to Startup....................................................93
4. Protection Control .................................................................................94
4.1 High Pressure Protection Control...........................................................94
4.2 Low Pressure Protection Control............................................................95
4.3 Discharge Pipe Protection Control .........................................................96
4.4 Inverter Protection Control .....................................................................97
4.5 STD Compressor Overload Protection...................................................98
5. Other Control.........................................................................................99
5.1 Outdoor Unit Rotation.............................................................................99
5.2 Emergency Operation ..........................................................................100
5.3 Demand Operation...............................................................................102
5.4 Heating operation prohibition ...............................................................102
6. Outline of Control (Indoor Unit) ...........................................................103
6.1 Drain Pump Control..............................................................................103
6.2 Louver Control for Preventing Ceiling Dirt............................................105
6.3 Thermostat Sensor in Remote Controller.............................................106
6.4 Freeze Prevention................................................................................108
6.5 Control of outdoor air Processing unit
(Unique Control for Outdoor Air Treatment).........................................109
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