Daikin CTX Series Service Manual page 4

DAMA-SM-21-003
Part 4 Remote Controller ............................................................. 47
1. Applicable Remote Controller ...............................................................48
2. BRC52B63/64 .......................................................................................49
Part 5 Service Diagnosis .............................................................. 50
1. General Problem Symptoms and Check Items .....................................51
2. Troubleshooting with LED .....................................................................52
3. Error Diagnosis .....................................................................................53
4. Troubleshooting ....................................................................................54
5. Actuator Check......................................................................................85
Table of Contents
2.1 Indoor Unit..............................................................................................52
2.2 Outdoor Unit ...........................................................................................52
3.1 To enter error diagnosis .........................................................................53
4.1 Error Codes and Description ..................................................................54
4.2 Indoor Unit PCB Abnormality .................................................................56
4.3 Freeze-up Protection Control .................................................................57
4.4 Indoor Fan Motor (DC Motor) or Related Abnormality ...........................58
4.5 Thermistor or Related Abnormality (Indoor Unit)....................................59
4.6 Thermistor or Related Abnormality (Indoor Unit)....................................60
4.7 Low-voltage Detection or Over-voltage Detection..................................61
4.8 Signal Transmission Error (Between Indoor Unit and Outdoor Unit)......62
4.9 Installation error......................................................................................64
4.10 Outdoor Unit PCB Abnormality...............................................................65
4.11 OL Activation (Compressor Overload) ...................................................66
4.12 Compressor Lock ...................................................................................68
4.13 DC Fan Lock ..........................................................................................69
4.14 Input Overcurrent Detection ...................................................................70
4.15 Discharge Pipe Temperature Control.....................................................71
4.16 High Pressure Control in Cooling ...........................................................72
4.17 Compressor System Sensor Abnormality ..............................................74
4.18 Position Sensor Abnormality ..................................................................75
4.19 Thermistor or Related Abnormality (Outdoor Unit).................................76
4.20 Electrical Box Temperature Rise............................................................78
4.21 Radiation Fin Temperature Rise ............................................................79
4.22 Output Overcurrent Detection ................................................................80
4.23 Four Way Valve Abnormality..................................................................82
5.1 Thermistor Resistance Check ................................................................85
5.2 Power Supply Waveform Check.............................................................86
5.3 Electronic Expansion Valve Check.........................................................86
5.4 Four Way Valve Performance Check .....................................................87
5.5 Inverter Unit Refrigerant System Check.................................................88
5.6 Rotation Pulse Check on the Outdoor Unit PCB ....................................88
5.7 Installation Condition Check...................................................................89
5.8 Discharge Pressure Check.....................................................................89
5.9 Outdoor Fan System Check ...................................................................90
5.10 Main Circuit Short Check........................................................................90
5.11 Power Module Check .............................................................................91
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