SiBE18-821_C
iii Table of Contents
2.4 Cooling Operation Fan Control...............................................................81
3. Special Control......................................................................................82
3.1 Startup Control .......................................................................................82
3.2 Oil Return Operation ..............................................................................83
3.3 Defrosting Operation ..............................................................................85
3.4 Pump-down Residual Operation ............................................................86
3.5 Restart Standby......................................................................................87
3.6 Stopping Operation ................................................................................87
4. Protection Control .................................................................................88
4.1 High Pressure Protection Control...........................................................88
4.2 Low Pressure Protection Control............................................................89
4.3 Discharge Pipe Temperature Protection Control....................................90
4.4 Inverter Protection Control .....................................................................91
4.5 Freeze-up Protection Control .................................................................92
4.6 Dew Condensation Prevention Control ..................................................93
5. Other Control.........................................................................................94
5.1 Demand Control .....................................................................................94
5.2 Heating Operation Prohibition Control....................................................94
6. BP Unit Control .....................................................................................95
6.1 BP Unit Command Conversion ..............................................................95
6.2 BP Unit Electronic Expansion Valve Control ..........................................96
6.3 SH Control in Cooling Operation ............................................................98
6.4 SC Control in Heating Operation............................................................99
6.5 Heat Exchanger Isothermal Control in Heating Operation .....................99
7. Indoor Unit Control (RA Models) .........................................................100
7.1 Temperature Control ............................................................................100
7.2 Operation Starting Control....................................................................101
7.3 Airflow Direction Control.......................................................................102
7.4 Fan Speed Control for Indoor Units......................................................104
7.5 Program Dry Operation ........................................................................105
7.6 Automatic Operation.............................................................................106
7.7 Thermostat Control...............................................................................107
7.8 NIGHT SET Mode ................................................................................109
7.9 ECONO Operation ...............................................................................110
7.10 HOME LEAVE Operation .....................................................................111
7.11 2-Area INTELLIGENT EYE Operation .................................................112
7.12 INTELLIGENT EYE Operation .............................................................114
7.13 Inverter POWERFUL Operation ...........................................................115
7.14 Other Functions....................................................................................117
8. Indoor Unit Control (SA Models) .........................................................119
8.1 Drain Pump Control..............................................................................119
8.2 Thermostat Sensor in Remote Controller.............................................121
8.3 Freeze Prevention Control ...................................................................123
8.4 Hot Start Control (In Heating Operation Only)......................................124
Part 6 Test Operation and Field Settings................................. 125
1. Test Operation ....................................................................................126
1.1 Procedure and Outline .........................................................................126
1.2 Operation when Power is Turned On ...................................................128
1.3 Outdoor Unit PCB Layout.....................................................................129
1.4 BP Unit .................................................................................................130
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