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SiEN18-622
vi
Table of Contents
5.10 Malfunction of Suction Air Thermistor ..................................................345
5.11 Malfunction of Remote Control Thermistor...........................................346
5.12 Transmission Error (between Indoor Unit and Remote Control) ..........347
5.13 Transmission Error (between Main and Sub Remote Control).............348
5.14 Malfunction of Field Setting Switch ......................................................349
5.15 Check ...................................................................................................350
6. Troubleshooting for BP Unit ................................................................352
6.1
Malfunction of Electronic Expansion Valve ..........................................352
6.2
Faulty BP Unit PCB ..............................................................................353
6.3
Faulty BP Liquid or Gas Pipe Thermistor .............................................354
6.4
Transmission Error between Indoor Unit and BP Unit..........................355
6.5
Transmission Error between Outdoor Unit and BP Unit.......................357
6.6
Check ...................................................................................................358
7. Troubleshooting for Outdoor Unit........................................................359
7.1
Faulty Outdoor Unit PCB......................................................................359
7.2
Actuation of High Pressure Switch .......................................................360
7.3
Actuation of Low Pressure Sensor .......................................................362
7.4
Compressor Motor Lock .......................................................................364
7.5
Malfunction of Outdoor Unit Fan Motor ................................................365
7.6
Malfunction of Moving Part of Electronic Expansion Valve
(Y1E, Y3E) ...........................................................................................366
7.7
Abnormal Discharge Pipe Temperature ...............................................368
7.8
Refrigerant Overcharged......................................................................369
7.9
Malfunction of Thermistor for Outdoor Air (R1T) ..................................370
7.10 Malfunction of Discharge Pipe Thermistor (R2T) .................................371
7.11 Malfunction of Thermistor (R3T, R5T) for
Suction Pipe1, 2 ...................................................................................372
7.12 Malfunction of Thermistor (R4T) for Outdoor Unit Heat Exchanger .....373
7.13 Malfunction of Thermistor (R7T) for Outdoor Unit Liquid Pipe .............374
7.14 Malfunction of Subcooling Heat Exchanger Thermistor (R6T) .............375
7.15 Malfunction of High Pressure Sensor...................................................376
7.16 Malfunction of Low Pressure Sensor....................................................377
7.17 Malfunction of PCB...............................................................................378
7.18 Malfunction of Inverter Radiating Fin Temperature Rise......................379
7.19 Inverter Compressor Abnormal ............................................................380
7.20 Inverter Current Abnormal....................................................................381
7.21 Inverter Start up Error...........................................................................382
7.22 Malfunction of Transmission between Inverter and Control PCB .........383
7.23 High Voltage of Capacitor in Main Inverter Circuit ...............................384
7.24 Malfunction of Inverter Radiating Fin Temperature Rise Sensor .........385
7.25 Faulty Combination of Inverter and Fan Driver ....................................386
7.26 Low Pressure Drop Due to Refrigerant Shortage or
Electronic Expansion Valve Failure......................................................387
7.27 Power Supply Insufficient or Instantaneous Failure .............................389
7.28 Check Operation not Executed ............................................................391
7.29 Malfunction of Transmission between Indoor Units and
Outdoor Units .......................................................................................392
7.30 Malfunction of Transmission between Remote Control and
Indoor Unit............................................................................................394
7.31 Malfunction of Transmission between Main and
Sub Remote Controls ...........................................................................395
Summary of Contents for FTKS50BVMB
Page 1: ...SiEN18 622 E Series Service Manual Applied Models zSuper Multi Plus Cooling Only Heat Pump ...
Page 105: ...Refrigerant Flow for Each Operation Mode SiEN18 622 92 Refrigerant Circuit ...
Page 157: ...Indoor Unit SkyAir Models SiEN18 622 144 Function ...
Page 312: ...SiEN18 622 Ceiling Mounted Cassette Type System Configuration 300 ...
Page 424: ...Method of Replacing The Inverter s Power Transistors Modules SiEN18 622 412 Troubleshooting ...
Page 446: ...Wiring Diagrams SiEN18 622 434 Appendix ...
Page 452: ...SiEN18 622 vi Index ...