SiUS091601E
59
Service Diagnosis
Part 6
Service Diagnosis
1. General Problem Symptoms and Check Items .........................................61
2. Troubleshooting with LED .........................................................................62
2.1 Indoor Unit.................................................................................................. 62
2.2 Outdoor Unit ............................................................................................... 62
3. Service Diagnosis .....................................................................................63
3.1 ARC480 Series........................................................................................... 63
3.2 ARC466 Series........................................................................................... 66
4. Troubleshooting ........................................................................................69
4.1 Error Codes and Description ...................................................................... 69
4.2 Indoor Unit PCB Abnormality ..................................................................... 70
4.3 Freeze-up Protection Control / Heating Peak-cut Control .......................... 71
4.4 Fan Motor (DC Motor) or Related Abnormality........................................... 72
4.5 Thermistor or Related Abnormality (Indoor Unit)........................................ 75
4.6 Low-voltage Detection or Over-voltage Detection...................................... 76
4.7 Signal Transmission Error (Between Indoor Unit and Outdoor Unit).......... 78
4.8 Unspecified Voltage (Between Indoor Unit and Outdoor Unit) ................... 80
4.9 Outdoor Unit PCB Abnormality................................................................... 81
4.10 OL Activation (Compressor Overload) ....................................................... 82
4.11 Compressor Lock ....................................................................................... 84
4.12 DC Fan Lock .............................................................................................. 85
4.13 Input Overcurrent Detection ....................................................................... 86
4.14 Four Way Valve Abnormality...................................................................... 87
4.15 Discharge Pipe Temperature Control......................................................... 89
4.16 High Pressure Control in Cooling ............................................................... 90
4.17 Compressor System Sensor Abnormality .................................................. 92
4.18 Position Sensor Abnormality ...................................................................... 93
4.19 Thermistor or Related Abnormality (Outdoor Unit)..................................... 95
4.20 Electrical Box Temperature Rise................................................................ 97
4.21 Radiation Fin Temperature Rise ................................................................ 98
4.22 Output Overcurrent Detection .................................................................... 99
5. Check ...................................................................................................... 101
5.1 Thermistor Resistance Check .................................................................. 101
5.2 Indoor Fan Motor Connector Output Check ............................................. 102
5.3 Power Supply Waveforms Check ............................................................. 103
5.4 Electronic Expansion Valve Check........................................................... 103
5.5 Four Way Valve Performance Check ....................................................... 104
5.6 Inverter Unit Refrigerant System Check................................................... 104
5.7 Inverter Analyzer Check ........................................................................... 105
5.8 Rotation Pulse Check on the Outdoor Unit PCB ...................................... 107
5.9 Installation Condition Check..................................................................... 108
5.10 Discharge Pressure Check....................................................................... 108
Summary of Contents for FTX09NMVJU
Page 12: ...SiUS091601E 1 List of Functions Part 1 List of Functions 1 Functions 2...
Page 15: ...SiUS091601E Specifications 4 Part 2 Specifications 1 Specifications 5...
Page 65: ...SiUS091601E Remote Controller 54 Part 5 Remote Controller 1 FTX Series 55 2 FVXS Series 57...
Page 144: ...Revision History Month Year Version Revised contents 02 2016 SiUS091601E First edition...
