Daikin FLKS25BAVMB Service Manual page 4

Part 5 Remote Controller ............................................................ 55
1. Remote Controller .................................................................................56
Part 6 Service Diagnosis............................................................. 58
1. General Problem Symptoms and Check Items .....................................59
2. Troubleshooting with LED .....................................................................60
3. Service Diagnosis .................................................................................61
4. Troubleshooting ....................................................................................64
5. Check ..................................................................................................102
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3.10 Defrost Control .......................................................................................50
3.11 Electronic Expansion Valve Control .......................................................51
3.12 Malfunctions ...........................................................................................54
2.1 Indoor Unit..............................................................................................60
2.2 Outdoor Unit ...........................................................................................60
4.1 Error Codes and Descriptions ................................................................64
4.2 Indoor Unit PCB Abnormality .................................................................65
4.3 Freeze-up Protection Control / Heating Peak-cut Control ......................66
4.4 Fan Motor (AC Motor) or Related Abnormality.......................................67
4.5 Thermistor or Related Abnormality (Indoor Unit)....................................69
4.6 Refrigerant Shortage ..............................................................................70
4.7 Low-voltage Detection or Over-voltage Detection..................................72
4.8 Signal Transmission Error (Between Indoor Unit and Outdoor Unit)......74
4.9 Unspecified Voltage (Between Indoor Unit and Outdoor Unit) ...............76
4.10 Outdoor Unit PCB Abnormality...............................................................77
4.11 OL Activation (Compressor Overload) ...................................................79
4.12 Compressor Lock ...................................................................................81
4.13 DC Fan Lock ..........................................................................................82
4.14 Input Overcurrent Detection ...................................................................83
4.15 Four Way Valve Abnormality..................................................................84
4.16 Discharge Pipe Temperature Control.....................................................86
4.17 High Pressure Control in Cooling ...........................................................87
4.18 Compressor System Sensor Abnormality ..............................................88
4.19 Position Sensor Abnormality ..................................................................89
4.20 DC Voltage / Current Sensor Abnormality..............................................91
4.21 Thermistor or Related Abnormality (Outdoor Unit).................................92
4.22 Electrical Box Temperature Rise............................................................94
4.23 Radiation Fin Temperature Rise ............................................................97
4.24 Output Overcurrent Detection ..............................................................100
5.1 Thermistor Resistance Check ..............................................................102
5.2 Hall IC Check .......................................................................................103
5.3 Power Supply Waveforms Check.........................................................103
5.4 Electronic Expansion Valve Check.......................................................104
5.5 Four Way Valve Performance Check ...................................................105
5.6 Inverter Unit Refrigerant System Check...............................................105
5.7 Inverter Analyzer Check .......................................................................106
5.8 Rotation Pulse Check on the Outdoor Unit PCB ..................................108
5.9 Installation Condition Check.................................................................109
5.10 Discharge Pressure Check...................................................................109
5.11 Outdoor Fan System Check .................................................................110
SiBE05-722EE
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