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4.
5.
Part 7 Appendix......................................................................... 315
1. Piping Diagrams..................................................................................316
2. Wiring Diagrams for Reference...........................................................324
3.
4.
iv
Inverter Radiating Fin Temperature Rise Sensor.................................272
or Faulty Combination of PC Board......................................................274
or Electronic Expansion Valve Failure..................................................275
3.41 "U1"
Reverse Phase, Open Phase.........................................................276
3.42 "U2" Outdoor Unit:
Instantaneous Failure...........................................................................277
3.44 "U4"
Malfunction of Transmission Between Indoor Units ......................281
3.45 "U5" Indoor Unit:
Remote Controller and Indoor Unit.......................................................283
3.46 "U7"
Between Outdoor Units ........................................................................284
3.47 "U8"
Indoor Unit: Malfunction of Transmission Between Main and
Sub Remote Controllers .......................................................................286
and Outdoor Units in the Same System ...............................................287
3.49 "UA"
Indoor Units and Remote Controller.....................................................288
Address Duplication of Centralized Controller ...............................290
3.51 "UE"
and Indoor Unit.....................................................................................291
System is not Set yet .....................................................................294
Troubleshooting (OP: Central Remote Controller) ..............................297
4.1 "M1"
PC Board Defect ............................................................................297
for Centralized Control .........................................................................298
for Centralized Control .........................................................................300
Address Duplication, Improper Setting ..........................................302
Troubleshooting (OP: Unified ON/OFF Controller) .............................305
5.1
Operation Lamp Blinks .........................................................................305
5.2
5.3
1.1 Outdoor Unit .........................................................................................316
1.2 Indoor Unit............................................................................................320
2.1 Outdoor Unit .........................................................................................324
2.2 Field Wiring ..........................................................................................329
2.3 Indoor Unit............................................................................................332
List of Electrical and Functional Parts .................................................348
3.1
Outdoor Unit .........................................................................................348
3.2 Indoor Side ...........................................................................................351
Option List ...........................................................................................357
4.1 Option List of Controllers......................................................................357
Low Pressure Drop Due to Refrigerant Shortage
Power Supply Insufficient or
Check Operation not Executed ...............................280
Malfunction of Transmission Between
Si34-601A
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Table of Contents
Troubleshooting
