Daikin REYQ-TA Series, Service Manual

Page: 4 / 324

SiUS371614E
iii Table of Contents
2.2 Wireless Remote Controller ....................................................................... 47
3. MAIN/SUB Setting.....................................................................................48
3.1 BRC1E73 ................................................................................................... 48
3.2 Wireless Remote Controller ....................................................................... 49
4. Centralized Control Group No. Setting......................................................50
4.1 BRC1E73 ................................................................................................... 50
4.2 Wireless Remote Controller ....................................................................... 52
4.3 Group No. Setting Example........................................................................ 53
5. Service Mode ............................................................................................54
5.1 BRC1E73 ................................................................................................... 54
Part 4 Functions and Control......................................................... 56
1. Operation Flowchart (Outdoor Unit) ..........................................................58
2. Stop Control ..............................................................................................59
2.1 Stop due to Error ........................................................................................ 59
2.2 When System is in Stop Mode ................................................................... 59
2.3 Slave Unit Stops during Master Unit Operation.......................................... 59
3. Standby Control ........................................................................................60
3.1 Restart Standby.......................................................................................... 60
3.2 Crankcase Heater Control .......................................................................... 60
4. Startup Control ..........................................................................................61
4.1 Startup Control in Cooling .......................................................................... 61
4.2 Startup Control in Heating .......................................................................... 62
5. Basic Control.............................................................................................63
5.1 Normal Operation ....................................................................................... 63
5.2 Compressor PI Control............................................................................... 64
5.3 Operation Priority and Rotation of Compressors........................................ 64
5.4 Compressor Step Control........................................................................... 66
5.5 Electronic Expansion Valve PI Control....................................................... 69
5.6 Step Control of Outdoor Fans .................................................................... 70
5.7 Heat Exchanger Control ............................................................................. 72
6. Protection Control .....................................................................................73
6.1 High Pressure Protection Control ............................................................... 73
6.2 Low Pressure Protection Control................................................................ 75
6.3 Discharge Pipe Protection Control ............................................................. 76
6.4 Compressor Body Protection Control......................................................... 77
6.5 Inverter Protection Control ......................................................................... 78
7. Special Control..........................................................................................80
7.1 Pump Down Residual Operation ................................................................ 80
7.2 Oil Return Operation .................................................................................. 81
7.3 Defrost Operation ....................................................................................... 83
7.4 Cooling/Heating Mode Switching ............................................................... 84
8. Other Control.............................................................................................88
8.1 Backup Operation....................................................................................... 88
8.2 Demand Operation ..................................................................................... 88
8.3 Heating Operation Prohibition .................................................................... 88