Daikin FTXS09DVJU - Page 4

SiUS04-702
Table of Contents iii
3.14 Additional Function.................................................................................... 46
4. Control Specification (15/18/24 Class).....................................................47
4.1 Mode Hierarchy......................................................................................... 47
4.2 Frequency Control..................................................................................... 48
4.3 Controls at Mode Changing / Start-up....................................................... 50
4.4 Discharge Pipe Temperature Control........................................................ 51
4.5 Input Current Control................................................................................. 52
4.6 Freeze-up Protection Control .................................................................... 53
4.7 Heating Peak-cut Control .......................................................................... 53
4.8 Fan Control................................................................................................ 54
4.9 Liquid Compression Protection Function 2................................................ 54
4.10 Low Hz High Pressure Limit...................................................................... 55
4.11 Defrost Control .......................................................................................... 55
4.12 Electronic Expansion Valve Control .......................................................... 56
4.13 Malfunctions .............................................................................................. 59
4.14 Forced Operation Mode ............................................................................ 60
4.15 Additional Function.................................................................................... 60
Part 5 Operation Manual ................................................................61
1. System Configuration...............................................................................62
2. Instruction.................................................................................................63
2.1 Safety Precautions .................................................................................... 63
2.2 FTXS09/12DVJU....................................................................................... 65
2.3 FTXS15/18/24DVJU.................................................................................. 90
Part 6 Service Diagnosis..............................................................115
1. Caution for Diagnosis.............................................................................116
2. Problem Symptoms and Measures........................................................118
3. Service Check Function .........................................................................119
4. Troubleshooting .....................................................................................122
4.1 Error Codes and Description................................................................... 122
4.2 Indoor Unit PCB Abnormality .................................................................. 123
4.3 Freeze-up Protection Control or High Pressure Control.......................... 124
4.4 Fan Motor or Related Abnormality .......................................................... 126
4.5 Thermistor or Related Abnormality (Indoor Unit)..................................... 129
4.6 Signal Transmission Error (between Indoor and Outdoor Unit) .............. 130
4.7 OL Activation (Compressor Overload) .................................................... 132
4.8 Compressor Lock .................................................................................... 133
4.9 DC Fan Lock ........................................................................................... 135
4.10 Input Over Current Detection .................................................................. 136
4.11 Four Way Valve Abnormality................................................................... 139
4.12 Discharge Pipe Temperature Control...................................................... 143
4.13 High Pressure Control in Cooling ............................................................ 145
4.14 Position Sensor Abnormality ................................................................... 149
4.15 DC Voltage / Current Sensor Abnormality............................................... 151
4.16 CT or Related Abnormality...................................................................... 152
4.17 Thermistor or Related Abnormality (Outdoor Unit).................................. 154