Daikin FTKM-U Series Service Manual page 3

SiMX042215E
Part 5 Remote Controller ............................................................. 46
1. Applicable Remote Controller ...............................................................47
2. ARC484B41 ..........................................................................................48
Part 6 Service Diagnosis .............................................................. 49
1. General Problem Symptoms and Check Items .....................................51
2. Troubleshooting with LED .....................................................................52
3. Service Diagnosis .................................................................................53
4. Troubleshooting ....................................................................................56
5. Check ....................................................................................................90
Table of Contents
3.9 Electronic Expansion Valve Control .......................................................42
3.10 Malfunctions ...........................................................................................45
2.1 Indoor Unit..............................................................................................52
2.2 Outdoor Unit ...........................................................................................52
3.1 Method 1 ................................................................................................53
3.2 Method 2 ................................................................................................54
4.1 Error Codes and Description ..................................................................56
4.2 Indoor Unit PCB Abnormality .................................................................57
4.3 Freeze-up Protection Control .................................................................58
4.4 Indoor Fan Motor (DC Motor) or Related Abnormality ...........................59
4.5 Thermistor or Related Abnormality (Indoor Unit)....................................61
4.6 Refrigerant Shortage ..............................................................................62
4.7 Low-voltage Detection or Over-voltage Detection..................................64
4.8 Signal Transmission Error (Between Indoor Unit and Outdoor Unit)......66
4.9 Unspecified Voltage (Between Indoor Unit and Outdoor Unit) ...............68
4.10 Outdoor Unit PCB Abnormality...............................................................69
4.11 OL Activation (Compressor Overload) ...................................................70
4.12 Compressor Lock ...................................................................................72
4.13 DC Fan Lock ..........................................................................................73
4.14 Input Overcurrent Detection ...................................................................74
4.15 Discharge Pipe Temperature Control.....................................................75
4.16 High Pressure Control in Cooling ...........................................................77
4.17 System Shutdown due to Temperature Abnormality in Compressor .....79
4.18 Compressor System Sensor Abnormality ..............................................80
4.19 Position Sensor Abnormality ..................................................................81
4.20 DC Voltage/Current Sensor Abnormality................................................83
4.21 Thermistor or Related Abnormality (Outdoor Unit).................................84
4.22 Electrical Box Temperature Rise............................................................85
4.23 Radiation Fin Temperature Rise ............................................................86
4.24 Output Overcurrent Detection ................................................................87
4.25 Error Codes None ..................................................................................89
5.1 Thermistor Resistance Check ................................................................90
5.2 Indoor Fan Motor Connector Check .......................................................91
5.3 Power Supply Waveform Check.............................................................92
5.4 Electronic Expansion Valve Check.........................................................92
5.5 Inverter Unit Refrigerant System Check.................................................93
5.6 Inverter Analyzer Check .........................................................................93
5.7 Outdoor Fan Motor Check......................................................................95
5.8 Installation Condition Check...................................................................96
ii