SiBE18-821_C
324 Troubleshooting
7.9 Outdoor Temperature Thermistor (R1T) Abnormality ..........................394
7.10 Discharge Pipe Thermistor (R2T) Abnormality.....................................395
7.11 Suction Pipe Thermistor (R3T, R5T) Abnormality ................................396
7.12 Outdoor Heat Exchanger Thermistor (R4T) Abnormality .....................397
7.13 Outdoor Liquid Pipe Thermistor (R7T) Abnormality .............................398
7.14 Subcooling Heat Exchanger Gas Pipe Thermistor (R6T)
Abnormality ...........................................................................................399
7.15 High Pressure Sensor Abnormality ......................................................400
7.16 Low Pressure Sensor Abnormality .......................................................401
7.17 Outdoor Unit PCB Abnormality.............................................................402
7.18 Radiation Fin Temperature Rise ..........................................................403
7.19 Inverter Compressor Abnormality.........................................................404
7.20 Inverter Current Abnormality ................................................................405
7.21 Compressor Start-up Error ...................................................................406
7.22 High Voltage of Capacitor in Main Inverter Circuit ...............................407
7.23 Radiation Fin Thermistor Abnormality ..................................................408
7.24 Low Pressure Drop due to Refrigerant Shortage or Electronic
Expansion Valve Abnormality...............................................................409
7.25 Power Supply Insufficient or Instantaneous Failure .............................411
7.26 Check Operation is not Conducted ......................................................412
7.27 Transmission Error between Remote Controller and Indoor Unit.........413
7.28 Transmission Error between Main and Sub Remote Controllers .........414
7.29 Transmission Error Between Indoor Unit and Outdoor Unit in the
Same System .......................................................................................415
7.30 Excessive Number of Indoor Units .......................................................417
7.31 Address Duplication of Central Remote Controller...............................418
7.32 Transmission Error between Centralized Remote Controller and
Indoor Unit............................................................................................419
7.33 System is not Set yet............................................................................421
7.34 System Abnormality, Refrigerant System Address Undefined .............422
7.35 Check for Outdoor Unit.........................................................................423
8. Thermistor Resistance / Temperature Characteristics........................427
9. Pressure Sensor .................................................................................429
10.Method of Replacing Inverter’s Power Transistors Modules...............430
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