Daikin FTX50GV1B Service Manual page 4

Part 5 Remote Controller ............................................................ 44
1. Remote Controller .................................................................................45
Part 6 Service Diagnosis............................................................. 47
1. Troubleshooting with LED .....................................................................49
2. Problem Symptoms and Measures .......................................................50
3. Service Check Function ........................................................................51
4. Troubleshooting ....................................................................................54
5. Check ....................................................................................................93
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1.1 Indoor Unit..............................................................................................49
1.2 Outdoor Unit ...........................................................................................49
4.1 Error Codes and Description ..................................................................54
4.2 Indoor Unit PCB Abnormality .................................................................55
4.3 Freeze-up Protection Control / Heating Peak-cut Control ......................56
4.4 Fan Motor (DC Motor) or Related Abnormality.......................................57
4.5 Thermistor or Related Abnormality (Indoor Unit)....................................59
4.6 Refrigerant Shortage ..............................................................................60
4.7 Low-voltage Detection or Over-voltage Detection..................................62
4.8 Signal Transmission Error (Between Indoor Unit and Outdoor Unit)......64
4.9 Signal Transmission Error on Outdoor Unit PCB
(RX50/60G2V1B, 71 Class Only) ...........................................................66
4.10 Unspecified Voltage (Between Indoor Unit and Outdoor Unit) ...............67
4.11 Outdoor Unit PCB Abnormality...............................................................68
4.12 OL Activation (Compressor Overload) ...................................................70
4.13 Compressor Lock ...................................................................................72
4.14 DC Fan Lock ..........................................................................................73
4.15 Input Overcurrent Detection ...................................................................74
4.16 Four Way Valve Abnormality..................................................................75
4.17 Discharge Pipe Temperature Control.....................................................77
4.18 High Pressure Control in Cooling ...........................................................78
4.19 Compressor System Sensor Abnormality ..............................................79
4.20 Position Sensor Abnormality ..................................................................81
4.21 CT or Related Abnormality (RX50/60G2V1B, 71 Class Only)................84
4.22 Thermistor or Related Abnormality (Outdoor Unit).................................86
4.23 Electrical Box Temperature Rise............................................................88
4.24 Radiation Fin Temperature Rise ............................................................89
4.25 Output Overcurrent Detection ................................................................91
5.1 Thermistor Resistance Check ................................................................93
5.2 Fan Motor Connector Output Check ......................................................94
5.3 Power Supply Waveforms Check...........................................................94
5.4 Electronic Expansion Valve Check.........................................................94
5.5 Four Way Valve Performance Check .....................................................95
5.6 Inverter Unit Refrigerant System Check.................................................95
5.7 Inverter Analyzer Check .........................................................................96
5.8 Rotation Pulse Check on the Outdoor Unit PCB ....................................97
5.9 Installation Condition Check...................................................................98
5.10 Discharge Pressure Check.....................................................................98
5.11 Outdoor Fan System Check ...................................................................99
5.12 Main Circuit Short Check........................................................................99
5.13 Capacitor Voltage Check......................................................................100
SiBE041029EB
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