Daikin REYQ-TA Series, Service Manual

Page: 7 / 324

SiUS371614E
Table of Contents vi
3.48 Power Supply Voltage Imbalance ............................................................ 242
3.49 Reactor Temperature Abnormality ........................................................... 244
3.50 Inverter Radiation Fin Temperature Abnormality ..................................... 245
3.51 Field Setting after Replacing Outdoor Unit Main PCB Abnormality or
Combination of PCB Abnormality ............................................................. 246
3.52 Refrigerant Shortage ................................................................................ 247
3.53 Reverse Phase, Open Phase................................................................... 248
3.54 Power Supply Insufficient or Instantaneous Abnormality ......................... 249
3.55 Check Operation not Executed ................................................................ 251
3.56 Transmission Error between Indoor Units and Outdoor Units .................. 252
3.57 Transmission Error between Remote Controller and Indoor Unit............. 255
3.58 Transmission Error between Outdoor Units ............................................. 256
3.59 Transmission Error between Main and Sub Remote Controllers ............. 262
3.60 Transmission Error between Indoor Unit and
Outdoor Unit in the Same System............................................................ 263
3.61 Improper Combination of Indoor Unit and Outdoor Unit,
Indoor Unit and Remote Controller........................................................... 264
3.62 Incorrect Electric Heater Capacity Setting................................................ 268
3.63 Address Duplication of Centralized Controller.......................................... 269
3.64 Transmission Error between Centralized Controller and Indoor Unit ....... 270
3.65 System not Set yet ................................................................................... 272
3.66 System Abnormality, Refrigerant System Address Undefined ................. 273
4. Check ...................................................................................................... 275
4.1 High Pressure Check ............................................................................... 275
4.2 Low Pressure Check ................................................................................ 276
4.3 Superheat Operation Check ..................................................................... 277
4.4 Power Transistor Check ........................................................................... 278
4.5 Refrigerant Overcharge Check................................................................. 279
4.6 Refrigerant Shortage Check ..................................................................... 280
4.7 Vacuuming and Dehydration Procedure .................................................. 281
4.8 Thermistor Check ..................................................................................... 282
4.9 Pressure Sensor Check ........................................................................... 285
4.10 Broken Wire Check of the Relay Wires .................................................... 286
4.11 Fan Motor Connector Check (Power Supply Cable) ................................ 287
4.12 Fan Motor Connector Check (Signal Cable) ............................................ 287
4.13 Electronic Expansion Valve Coil Check ................................................... 288
Part 7 Appendix............................................................................ 289
1. Wiring Diagrams......................................................................................290
1.1 Outdoor Unit ............................................................................................. 290
1.2 Indoor Unit ................................................................................................ 296
1.3 Air Treatment Equipment ......................................................................... 303
1.4 Branch Selector Unit ................................................................................ 306