Daikin RXQ12AHR, Service Manual

Page: 3 / 321

SiAF341904E
Table of Contents ii
Part 4 Functions and Control ....................................................... 78
1. Operation Flowchart..............................................................................79
2. Stop Control ..........................................................................................80
2.1 Abnormal Shutdown ...............................................................................80
2.2 Slave Unit Stops during Master Unit Operation......................................80
3. Standby Control ....................................................................................81
3.1 Restart Standby......................................................................................81
4. Startup Control ......................................................................................82
4.1 Cooling Startup Control ..........................................................................82
5. Normal Operation..................................................................................83
5.1 List of Functions in Normal Operation ....................................................83
5.2 Compressor Control ...............................................................................83
5.3 Compressor Capacity Control ................................................................84
5.4 Operating Priority and Rotation of Compressors....................................85
5.5 Compressor Step Control.......................................................................86
5.6 Step Control of Outdoor Fans ................................................................86
6. Protection Control .................................................................................87
6.1 High Pressure Protection Control...........................................................87
6.2 Low Pressure Protection Control............................................................87
6.3 Discharge Pipe Protection Control .........................................................88
6.4 Compressor Body Protection Control.....................................................88
6.5 Inverter Protection Control .....................................................................89
7. Special Control......................................................................................90
7.1 Outdoor Unit Rotation.............................................................................90
7.2 Oil Return Operation ..............................................................................91
7.3 Inverter Pre-Heat Operation ...................................................................92
8. Outline of Control (Indoor Unit) .............................................................93
8.1 Set Temperature and Control Target Temperature................................93
8.2 Thermostat Control.................................................................................93
8.3 Automatic Airflow Rate Control ..............................................................95
8.4 Airflow Direction Control.........................................................................96
8.5 Auto Draft Reducing Control (FXFSQ only) ...........................................97
8.6 Eco Full Automatic Control (FXFSQ only)..............................................97
8.7 Drain Pump Control................................................................................98
8.8 Freeze-Up Prevention Control..............................................................100
8.9 Dew Condensation Prevention Control ................................................101
8.10 Electronic Expansion Valve Control .....................................................102
8.11 Circulation Airflow (FXFSQ only)..........................................................103
Part 5 Field Settings and Test Operation .................................. 105
1. Field Settings for Indoor Unit...............................................................106
1.1 Field Settings from Remote Controller .................................................106
1.2 List of Field Settings for Indoor Unit .....................................................111
1.3 Applicable Range of Field Settings ......................................................113
1.4 Details of Field Settings for Indoor Unit................................................114
1.5 Operation Control Mode .......................................................................126
2. Field Settings for Outdoor Unit............................................................128
2.1 Function Setting ...................................................................................128
2.2 Settings by DIP Switches .....................................................................129
2.3 Settings by BS Buttons.........................................................................132