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SiUS041501E
iii
Table of Contents
3.10 Defrost Control ........................................................................................... 43
3.11 Electronic Expansion Valve Control ........................................................... 44
3.12 Malfunctions ............................................................................................... 47
Part 5 Remote Controller ............................................................... 48
1. Cooling Only..............................................................................................49
2. Heat Pump ................................................................................................51
Part 6 Service Diagnosis................................................................ 53
1. General Problem Symptoms and Check Items .........................................55
2. Troubleshooting with LED .........................................................................56
2.1
Indoor Unit.................................................................................................. 56
2.2
Outdoor Unit ............................................................................................... 56
3. Service Diagnosis .....................................................................................57
4. Troubleshooting ........................................................................................60
4.1
Error Codes and Description ...................................................................... 60
4.2
Indoor Unit PCB Abnormality ..................................................................... 61
4.3
Freeze-up Protection Control / Heating Peak-cut Control .......................... 62
4.4
Fan Motor (DC Motor) or Related Abnormality........................................... 63
4.5
Thermistor or Related Abnormality (Indoor Unit)........................................ 65
4.6
Low-voltage Detection or Over-voltage Detection...................................... 66
4.7
Signal Transmission Error (between Indoor Unit and Outdoor Unit) .......... 68
4.8
Unspecified Voltage (Between Indoor Unit and Outdoor Unit) ................... 70
4.9
Outdoor Unit PCB Abnormality................................................................... 71
4.10 OL Activation (Compressor Overload) ....................................................... 72
4.11 Compressor Lock ....................................................................................... 74
4.12 DC Fan Lock .............................................................................................. 75
4.13 Input Overcurrent Detection ....................................................................... 76
4.14 Four Way Valve Abnormality...................................................................... 77
4.15 Discharge Pipe Temperature Control......................................................... 79
4.16 High Pressure Control in Cooling ............................................................... 80
4.17 Compressor System Sensor Abnormality .................................................. 82
4.18 Position Sensor Abnormality ...................................................................... 83
4.19 Thermistor or Related Abnormality (Outdoor Unit)..................................... 85
4.20 Electrical Box Temperature Rise................................................................ 87
4.21 Radiation Fin Temperature Rise ................................................................ 88
4.22 Output Overcurrent Detection .................................................................... 89
5. Check ........................................................................................................91
5.1
Thermistor Resistance Check .................................................................... 91
5.2
Fan Motor Connector Output Check .......................................................... 92
5.3
Power Supply Waveforms Check............................................................... 93
5.4
Electronic Expansion Valve Check............................................................. 93
5.5
Four Way Valve Performance Check ......................................................... 94
5.6
Inverter Unit Refrigerant System Check..................................................... 94
5.7
Inverter Analyzer Check ............................................................................. 95
5.8
Rotation Pulse Check on the Outdoor Unit PCB ........................................ 97
Summary of Contents for FTKN09NMVJU
Page 12: ...SiUS041501E 1 List of Functions Part 1 List of Functions 1 Functions 2...
Page 59: ...SiUS041501E Remote Controller 48 Part 5 Remote Controller 1 Cooling Only 49 2 Heat Pump 51...
Page 65: ...SiUS041501E Service Diagnosis 54 5 13 Power Module Check 100...
Page 132: ...Revision History Month Year Version Revised contents 03 2015 SiUS041501E First edition...