Single Split Wall Mounted and Concealed Duct D-Series Heat Pump – Service Manual

This Service Manual is for Inverter Pair Wall Mounted Type D-Series Heat Pump

Indoor Units
FTXS09DVJU ; FTXS12DVJU ; FTXS15DVJU ; FTXS18DVJU ; FTXS24DVJU ; FDXS09DVJU ; FDXS12DVJU
Outdoor Units
RXS09DVJU ; RXS12DVJU ; RXS15DVJU ; RXS18DVJU ; RXS24DVJU
 

CONTENTS:

  • 1. Introduction … vi
  • 1.1 Safety Cautions … vi
  • Part 1 List of Functions … page 1

  • 1. List of Functions … page 2
  • Part 2 Specifications … page 5

  • 1. Specifications … page 6
  • Part 3 Printed Circuit Board Connector
    Wiring Diagram … page 11

  • 1. Printed Circuit Board
    Connector Wiring Diagram … page 12
  • 1.1 FTXS09/12DVJU … page 12
  • 1.2 FTXS15/18/24DVJU … page 14
  • 1.3 FDXS09/12DVJU … page 16
  • 1.4 RXS09/12DVJU … page 18
  • 1.5 RXS15/18/24DVJU … page 20
  • Part 4 Function and Control … page 23

  • 1. Main Functions … page 25
  • 1.1 Frequency Principle … page 25
  • 1.2 Power-Airflow Dual Flaps,
    Wide-Angle Louvres and Auto-Swing
    (Only forthe Single Split Duct-Free
    System) … page 27
  • 1.3 Fan Speed Control for
    Indoor Units … page 28
  • 1.4 Program Dry Function … page 29
  • 1.5 Automatic Operation … page 30
  • 1.6 Thermostat Control … page 31
  • 1.7 NIGHT SET Mode … page 32
  • 1.8 INTELLIGENT EYE … page 33
  • 1.9 HOME LEAVE Operation … page 35
  • 1.10 Inverter Powerful
    Operation … page 36
  • 1.11 Other Functions … page 37
  • 2. Function of Thermistor … page 39
  • 2.1 Heat Pump Model …page 39
  • 3. Control Specification
    (09/12 Class) … page 40
  • 3.1 Mode Hierarchy … page 40
  • 3.2 Frequency Control … page 41
  • 3.3 Controls at Mode Changing /
    Start-up … page 43
  • 3.4 Discharge Pipe Control … page 44
  • 3.5 Input Current Control … page 45
  • 3.6 Freeze-up Protection
    Control … page 45
  • 3.7 Heating Peak-cut Control … page 46
  • 3.8 Fan Control … page 46
  • 3.9 Liquid Compression
    Protection Function 2 … page 46
  • 3.10 Defrost Control … page 47
  • 3.11 Electronic Expansion
    Valve Control …page 48
  • 3.12 Malfunctions … page 51
  • 3.13 Forced Operation Mode … page 52
  • 3.14 Additional Function … page 52
  • 4. Control Specification
    (15/18/24 Class) … page 53
  • 4.1 Mode Hierarchy … page 53
  • 4.2 Frequency Control … page 54
  • 4.3 Controls at Mode
    Changing / Start-up … page 56
  • 4.4 Discharge Pipe
    Temperature Control … page 57
  • 4.5 Input Current Control … page 58
  • 4.6 Freeze-up Protection C
    ontrol … page 59
  • 4.7 Heating Peak-cut Control … page 59
  • 4.8 Fan Control …page 60
  • 4.9 Liquid Compression
    Protection Function 2 … page 60
  • 4.10 Low Hz High Pressure
    Limit … page 61
  • 4.11 Defrost Control …page 61
  • 4.12 Electronic Expansion
    Valve Control … page 62
  • 4.13 Malfunctions … page 65
  • 4.14 Forced Operation
    Mode … page 66
  • 4.15 Additional Function … page 66
  • Part 5 System Configuration … page 67

  • 1. System Configuration … page 68
  • 2. Instruction … page 69
  • 2.1 Safety Precautions … page 69
  • 2.2 The Single Split Duct-Free
    System FTXS09/12DVJU … page 71
  • 2.3 The Single Split Duct-Free
    System FTXS15/18/24DVJU … page 96
  • 2.4 The Slim Duct Built-in
    System FDXS09/12DVJU … page 121
  • Part 6 Service Diagnosis … page 141

  • 1. Caution for Diagnosis … page 142
  • 2. Problem Symptoms and Measures … page 144
  • 3. Service Check Function … page 145
  • 4. Troubleshooting … page 148
  • 4.1 Error Codes and Description … page 148
  • 4.2 Indoor Unit PCB Abnormality … page 149
  • 4.3 Freeze-up Protection Control
    or High Pressure Control … page 150
  • 4.4 Fan Motor or Related
    Abnormality … page 152
  • 4.5 Thermistor or Related
    Abnormality (Indoor Unit) … page 155
  • 4.6 Signal Transmission
    Error(between Indoor and Outdoor Unit) … page 156
  • 4.7 OL Activation (Compressor
    Overload) … page 157
  • 4.8 Compressor Lock … page 158
  • 4.9 DC Fan Lock … page 160
  • 4.10 Input Over Current
    Detection … page 161
  • 4.11 Four Way Valve Abnormality … page 164
  • 4.12 Discharge Pipe Temperature
    Control … page 168
  • 4.13 High Pressure Control in
    Cooling … page 170
  • 4.14 Position Sensor
    Abnormality … page 174
  • 4.15 DC Voltage / Current
    Sensor Abnormality … page 176
  • 4.16 CT or Related
    Abnormality … page 177
  • 4.17 Thermistor or Related
    Abnormality (Outdoor Unit) … page 179
  • 4.18 Electrical Box
    Temperature Rise … page 181
  • 4.19 Radiation Fin Temperature
    Rise … page 183
  • 4.20 Output Over Current
    Detection … page 185
  • 4.21 Insufficient Gas … page 189
  • 4.22 Over-voltage Detection … page 193
  • 4.23 Low-voltage Detection … page 194
  • 5. Check … page 195
  • 5.1 How to Check … page 195
  • Part 7 Removal Procedure … page 205

  • 1. FTXS09/12DVJU … page 206
  • 1.1 Removal of Air Filter … page 206
  • 1.2 Removal of Front Grille … page 209
  • 1.3 Removal of Horizontal Blade
    and Vertical Blade … page 212
  • 1.4 Removal of Electrical Box,
    PCB and Swing Motor …page 214
  • 1.5 Removal of Heat Exchanger … page 220
  • 1.6 Install of Drain Plug … page 223
  • 1.7 Removal of Fan Rotor
    and Fan Motor … page 225
  • 2. FTXS15/18/24DVJU … page 229
  • 2.1 Removal of the Air Filter /
    Front Panel … page 229
  • 2.2 Removal of the Front Grille … page 233
  • 2.3 Removal of the Horizontal
    Blades / Vertical Blades … page 236
  • 2.4 Removal of the Electrical
    Box / PCB / Swing Motor … page 239
  • 2.5 Removal of the Heat
    Exchanger … page 247
  • 2.6 Removal of the Fan Rotor /
    Fan Motor … page 250
  • 3. RXS09/12DVJU … page 253
  • 3.1 Removal of Panels and
    Fan Motor … page 253
  • 3.2 Removal of Electrical Box … page 261
  • 3.3 Removal of Reactor and
    Partition Plate … page 263
  • 3.4 Removal of Sound Blanket … page 265
  • 3.5 Removal of Four Way
    Valve … page 268
  • 3.6 Removal of Compressor … page 270
  • 3.7 Removal of PCB … page 273
  • 4. RXS15/18/24DVJU … page 276
  • 4.1 Removal of the Panels
    and Plates … page 276
  • 4.2 Removal of the Fan Motor /
    Propeller Fan … page 281
  • 4.3 Removal of the PCB /
    Electrical Box … page 285
  • 4.4 Removal of the Reactor … page 294
  • 4.5 Removal of the Sound
    Blanket … page 296
  • 4.6 Removal of the Four
    Way Valve … page 299
  • 4.7 Removal of the Electronic
    Expansion Valve … page 300
  • 4.8 Removal of the Compressor … page 301
  • Part 8 Others … page 303

  • 1. Others … page 304
  • 1.1 Test Run from the
    Remote Controller … page 304
  • 1.2 Jumper Settings … page 305
  • Part 9 Appendix … page 3077

  • 1. Piping Diagrams … page 308
  • 1.1 Indoor Units … page 308
  • 1.2 Outdoor Units … page 309
  • 2. Wiring Diagrams … page 311
  • 2.1 Indoor Units … page 311
  • 2.2 Outdoor Units … page 313
  • Index… i
  • Drawings & Flow Charts … v