SiUS042113E
82
Part 6 Service Diagnosis
1. General Problem Symptoms and Check Items .........................................84
2. Troubleshooting with LED .........................................................................85
3.1 Method 1 .................................................................................................... 86
3.2 Method 2 .................................................................................................... 87
4.1 Error Codes and Description ...................................................................... 89
4.2 Indoor Unit PCB Abnormality ..................................................................... 90
4.3 Freeze-up Protection Control/Heating Peak-cut Control ............................ 91
4.4 Indoor Fan Motor (DC Motor) or Related Abnormality ............................... 93
4.5 Thermistor or Related Abnormality............................................................. 95
4.6 Humidity Sensor Abnormality ..................................................................... 96
4.7 Refrigerant Shortage .................................................................................. 97
4.8 Low-voltage Detection or Over-voltage Detection...................................... 99
4.9 Signal Transmission Error (Between Indoor Unit and Outdoor Unit)........ 101
4.10 Unspecified Voltage (Between Indoor Unit and Outdoor Unit) ................. 103
4.11 Outdoor Unit PCB Abnormality................................................................. 104
4.12 Actuation of High Pressure Switch ........................................................... 105
4.13 OL Activation (Compressor Overload) ..................................................... 106
4.14 Compressor Lock ..................................................................................... 109
4.15 DC Fan Lock ............................................................................................ 110
4.16 Input Overcurrent Detection ..................................................................... 111
4.17 Four Way Valve Abnormality.................................................................... 113
4.18 Discharge Pipe Temperature Control....................................................... 115
4.19 High Pressure Control in Cooling ............................................................. 117
4.20 System Shutdown due to Temperature Abnormality in Compressor ....... 119
4.21 Compressor System Sensor Abnormality ................................................ 120
4.22 Position Sensor Abnormality .................................................................... 121
4.23 DC Voltage/Current Sensor Abnormality.................................................. 124
4.24 Thermistor or Related Abnormality (Outdoor Unit)................................... 126
4.25 Electrical Box Temperature Rise.............................................................. 128
4.26 Radiation Fin Temperature Rise .............................................................. 129
4.27 Output Overcurrent Detection .................................................................. 131
5.1 Thermistor Resistance Check .................................................................. 134
5.2 Indoor Fan Motor Connector Check ......................................................... 135
5.3 Power Supply Waveform Check............................................................... 135
Part 6
Service Diagnosis
Summary of Contents for FTXM-V Series
Page 16: ...SiUS042113E 12 Part 2 Specifications 1 Specifications 13 Part 2 Specifications...
Page 96: ...Troubleshooting SiUS042113E 92 Part 6 Service Diagnosis Reference Check No 01 Refer to P 134...
Page 150: ...Check SiUS042113E 146 Part 6 Service Diagnosis 18 24 class R24539 DC DC W V U...
Page 166: ...Piping Diagrams SiUS042113E 162 Part 8 Appendix RXM24VVJU 3D132217...
Page 171: ...SiUS042113E Operation Limit Part 8 Appendix 167 3 Operation Limit RXM09 12 18 24VVJU 3D133582A...