Daikin D-Series - Part 4 Refrigerant Circuit; 1. Refrigerant Circuit; 1.1 Outdoor Units; 3. Refrigerant Flow for Each Operation Mode

Si18-525B
iv Table of Contents
3. Special Control....................................................................................114
3.1 Startup Control .....................................................................................114
3.2 Oil Return Operation ............................................................................115
3.3 Defrosting Operation ............................................................................117
3.4 Pump-down Residual Operation ..........................................................118
3.5 Restart Standby....................................................................................118
3.6 Stopping Operation ..............................................................................119
3.7 Pressure Equalization Prior to Startup .................................................119
4. Protection Control ...............................................................................120
4.1 High Pressure Protection Control.........................................................120
4.2 Low Pressure Protection Control..........................................................122
4.3 Discharge Pipe Protection Control .......................................................123
4.4 Inverter Protection Control ...................................................................124
4.5 Freeze-up Protection Control ...............................................................125
4.6 Dew Condensation Prevention Control ................................................126
5. Other Control.......................................................................................127
5.1 Demand Operation...............................................................................127
5.2 Heating Operation Prohibition ..............................................................127
6. BP Unit Control ...................................................................................128
6.1 BP Unit Command Conversion ............................................................128
6.2 BP Unit Electronic Expansion Valve Control........................................129
6.3 SH Control in Cooling Operation..........................................................131
6.4 SC Control in Heating Operation..........................................................132
6.5 Heat Exchanger Isothermal Control in Heating Operation ...................132
7. Indoor Unit (RA Models)......................................................................133
7.1 Power-Airflow Dual Flaps, Wide Angle Louvers and Auto-Swing ........133
7.2 Fan Speed Control for Indoor Units......................................................134
7.3 Programme Dry Function .....................................................................135
7.4 Automatic Operation.............................................................................136
7.5 Thermostat Control...............................................................................137
7.6 Night Set Mode.....................................................................................138
7.7 ECONO Mode ......................................................................................139
7.8 MOLD PROOF Operation ....................................................................139
7.9 INTELLIGENT EYE..............................................................................140
7.10 HOME LEAVE Operation .....................................................................142
7.11 Inverter POWERFUL Operation...........................................................143
7.12 Other Functions....................................................................................144
8. Indoor Unit (SkyAir Models) ................................................................146
8.1 Function Outline ...................................................................................146
8.2 Electric Function Parts .........................................................................147
8.3 Function Details....................................................................................148
Part 6 Test Operation ............................................................... 159
1. Test Operation ....................................................................................160
1.1 Procedure and Outline .........................................................................160
2. Outdoor Unit PCB Layout....................................................................165
3. Field Setting ........................................................................................166
3.1 Field Setting from Outdoor Unit............................................................166
3.2 Detail of Setting Mode..........................................................................172