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SiUS091133
iv
Table of Contents
2. Problem Symptoms and Measures ...........................................................90
3. Service Check Function ............................................................................91
4. Troubleshooting ........................................................................................94
Indoor Unit PCB Abnormality ..................................................................... 95
Freeze-up Protection Control or Heating Peak-cut Control........................ 97
Fan Motor or Related Abnormality ............................................................. 99
Thermistor or Related Abnormality (Indoor Unit)...................................... 103
Low-voltage Detection or Over-voltage Detection.................................... 107
Signal Transmission Error (between Indoor Unit and Outdoor Unit) ........ 109
Signal Transmission Error on Outdoor Unit PCB
(24/30/36 Class Only)111
4.10 Unspecified Voltage (between Indoor Unit and Outdoor Unit) ................. 112
4.11 Outdoor Unit PCB Abnormality................................................................. 113
4.12 OL Activation (Compressor Overload) ..................................................... 115
4.13 Compressor Lock ..................................................................................... 116
4.14 DC Fan Lock ............................................................................................ 117
4.15 Input Overcurrent Detection ..................................................................... 118
4.16 Four-Way Valve Abnormality.................................................................... 119
4.17 Discharge Pipe Temperature Control....................................................... 121
4.18 High Pressure Control in Cooling ............................................................. 123
4.19 Compressor System Sensor Abnormality ................................................ 125
4.20 Position Sensor Abnormality .................................................................... 128
4.21 DC Voltage / Current Sensor Abnormality (09/12 Class Only)................. 131
4.22 CT or Related Abnormality (24/30/36 Class Only) ................................... 132
4.23 Thermistor or Related Abnormality (Outdoor Unit) ................................... 134
4.24 Electrical Box Temperature Rise.............................................................. 136
4.25 Radiation Fin Temperature Rise .............................................................. 138
4.26 Output Overcurrent Detection .................................................................. 140
Thermistor Resistance Check .................................................................. 142
Fan Motor Connector Output Check ........................................................ 143
Power Supply Waveforms Check............................................................. 144
Electronic Expansion Valve Check........................................................... 144
Four-Way Valve Performance Check ....................................................... 145
Inverter Units Refrigerant System Check ................................................. 145
Rotation Pulse Check on the Outdoor Unit PCB ...................................... 148
5.10 Installation Condition Check..................................................................... 149
5.11 Discharge Pressure Check....................................................................... 150
5.12 Outdoor Fan System Check ..................................................................... 150
5.13 Main Circuit Short Check.......................................................................... 151
5.14 Capacitor Voltage Check.......................................................................... 152
5.15 Power Module Check ............................................................................... 153
Содержание FTXS30LVJU
Страница 8: ...SiUS091133 Table of Contents vii...
Страница 11: ...SiUS091133 1 List of Functions Part 1 List of Functions 1 Functions 2 1 1 FTXS Series 2 1 2 FDXS Series 4...
Страница 15: ...SiUS091133 5 Specifications Part 2 Specifications 1 Specifications 6 1 1 FTXS Series 6 1 2 FDXS Series 11...
Страница 164: ...SiUS091133 Check Service Diagnosis 154 15 18 class 24 30 36 class Power module R16697 R16073 Power module...
Страница 259: ...Indoor Unit FTXS30 36LVJU SiUS091133 249 Removal Procedure 6 Disconnect the connector Step Procedure Points R9558...
Страница 413: ...Wiring Diagrams SiUS091133 403 Appendix...