Single Split Wall Mounted 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
Outdoor Units
RX09FVJU ; RX12FVJU ; RX15FVJU ; RX18FVJU ; RX24FVJU
 

CONTENTS:

  • 1. Introduction … vi
  • 1.1 Safety Cautions … vi
  • 1.2 Used Icons … x
  • List of Functions … page 1

  • 1. List of Functions … page 2
  • Specifications … page 3

  • 1. Specifications … page 4
  • Printed Circuit Board Connector Wiring
    Diagram … page 7

  • 1. Printed Circuit Board Connector
    Wiring Diagram … page 8
  • 1.1 FTXS09/12DVJU … page 8
  • 1.2 FTXS15/18/24DVJU … page 10
  • 1.3 RX09/12FVJU … page 12
  • 1.4 RX15/18/24FVJU … page 14
  • Function and Control … page 17

  • 1. Main Functions … page 19
  • 1.1 Frequency Principle … page 19
  • 1.2 Power-Airflow Dual Flaps, Wide-Angle
    Louvres and Auto-Swing … page 21
  • 1.3 Fan Speed Control for Indoor Units … page 22
  • 1.4 Programme Dry Function … page 23
  • 1.5 Automatic Operation … page 24
  • 1.6 Thermostat Control … page 25
  • 1.8 INTELLIGENT EYE … page 27
  • 1.9 HOME LEAVE Operation … page 29
  • 1.10 Inverter POWERFUL Operation … page 30
  • 1.11 Other Functions … page 31
  • 2. Function of Thermistor … page 33
  • 2.1 Heat Pump Model … page 33
  • 3. Control Specification (09/12 Class) … page 34
  • 3.1 Mode Hierarchy … page 34
  • 3.2 Frequency Control … page 35
  • 3.3 Controls at Mode Changing / Start-up … page 37
  • 3.4 Discharge Pipe Temperature Control … page 38
  • 3.5 Input Current Control … page 39
  • 3.6 Freeze-up Protection Control … page 39
  • 3.7 Heating Peak-cut Control … page 40
  • 3.8 Fan Control … page 40
  • 3.9 Liquid Compression Protection
    Function 2 … page 40
  • 3.10 Defrost Control … page 41
  • 3.11 Electronic Expansion Valve Control … page 42
  • 3.12 Malfunctions … page 45
  • 3.13 Forced Operation Mode … page 46
  • 3.14 Additional Function … page 46
  • 4. Control Specification (15/18/24 Class) … page 47
  • 4.1 Mode Hierarchy … page 47
  • 4.2 Frequency Control … page 48
  • 4.3 Controls at Mode Changing / Start-up … page 50
  • 4.4 Discharge Pipe Temperature Control … page 51
  • 4.5 Input Current Control … page 52
  • 4.6 Freeze-up Protection Control … page 53
  • 4.7 Heating Peak-cut Control … page 53
  • 4.8 Fan Control … page 54
  • 4.9 Liquid Compression Protection
    Function 2 … page 54
  • 4.10 Low Hz High Pressure Limit … page 55
  • 4.11 Defrost Control … page 55
  • 4.12 Electronic Expansion Valve
    Control … page 56
  • 4.13 Malfunctions … page 59
  • 4.14 Forced Operation Mode … page 60
  • 4.15 Additional Function … page 60
  • Operation Manual … page 61

  • 1. System Configuration … page 62
  • 2. Instruction … page 63
  • 2.1 Safety Precautions … page 63
  • 2.2 FTXS09/12DVJU … page 65
  • 2.3 FTXS15/18/24DVJU … page 90
  • Service Diagnosis … page 115

  • 1. Caution for Diagnosis … page 116
  • 2. Problem Symptoms and Measures … page 118
  • 3. Service Check Function … page 119
  • 4. Troubleshooting … page 122
  • 4.1 Error Codes and Description … page 122
  • 4.2 Indoor Unit PCB Abnormality … page 123
  • 4.3 Freeze-up Protection Control or High
    Pressure Control … page 124
  • 4.4 Fan Motor or Related Abnormality … page 126
  • 4.5 Thermistor or Related Abnormality
    (Indoor Unit) … page 129
  • 4.6 Signal Transmission Error (between
    Indoor and Outdoor Unit) … page 130
  • 4.7 OL Activation (Compressor Overload) … page 132
  • 4.8 Compressor Lock … page 133
  • 4.9 DC Fan Lock … page 135
  • 4.10 Input Over Current Detection … page 136
  • 4.11 Four Way Valve Abnormality … page 139
  • 4.12 Discharge Pipe Temperature Control … page 143
  • 4.13 High Pressure Control in Cooling … page 145
  • 4.14 Position Sensor Abnormality … page 149
  • 4.15 DC Voltage / Current Sensor
    Abnormality … page 151
  • 4.16 CT or Related Abnormality … page 152
  • 4.17 Thermistor or Related Abnormality
    (Outdoor Unit) … page 154
  • 4.18 Electrical Box Temperature Rise … page 156
  • 4.19 Radiation Fin Temperature Rise … page 158
  • 4.20 Output Over Current Detection … page 160
  • 4.21 Insufficient Gas … page 164
  • 4.22 Over-voltage Detection … page 168
  • 4.23 Low-voltage Detection … page 169
  • 5. Check … page 170
  • 5.1 How to Check … page 170
  • Removal Procedure … page 181

  • 1. FTXS09/12DVJU … page 182
  • 1.1 Removal of Air Filter … page 182
  • 1.2 Removal of Front Grille … page 185
  • 1.3 Removal of Horizontal Blade and
    Vertical Blade … page 188
  • 1.4 Removal of Electrical Box, PCB
    and Swing Motor … page 190
  • 1.5 Removal of Heat Exchanger … page 196
  • 1.6 Install of Drain Plug … page 199
  • 1.7 Removal of Fan Rotor and
    Fan Motor … page 201
  • 2. FTXS15/18/24DVJU … page 205
  • 2.1 Removal of the Air Filter /
    Front Panel … page 205
  • 2.2 Removal of the Front Grille … page 209
  • 2.3 Removal of the Horizontal Blades /
    Vertical Blades … page 212
  • 2.4 Removal of the Electrical Box / PCB /
    Swing Motor … page 215
  • 2.5 Removal of the Heat Exchanger … page 223
  • 2.6 Removal of the Fan Rotor / Fan Motor … page 226
  • 3. RX09/12FVJU … page 229
  • 3.1 Removal of Panels and Fan Motor … page 229
  • 3.2 Removal of Electrical Box … page 237
  • 3.3 Removal of Reactor and
    Partition Plate … page 239
  • 3.4 Removal of Sound Blanket … page 241
  • 3.5 Removal of Four Way Valve … page 244
  • 3.6 Removal of Compressor … page 246
  • 3.7 Removal of PCB … page 249
  • 4. RX15/18/24FVJU … page 252
  • 4.1 Removal of the Panels and Plates … page 252
  • 4.2 Removal of the Fan Motor /
    Propeller Fan … page 257
  • 4.3 Removal of the PCB /
    Electrical Box … page 261
  • 4.4 Removal of the Reactor … page 270
  • 4.5 Removal of the Sound
    Blanket … page 272
  • 4.6 Removal of the Four Way Valve … page 275
  • 4.7 Removal of the Electronic
    Expansion Valve … page 276
  • 4.8 Removal of the Compressor … page 277
  • Others … page 279

  • 1. Others … page 280
  • 1.1 Test Run from the Remote Controller … page 280
  • 1.2 Jumper Settings … page 281
  • Appendix … page 283

  • 1. Piping Diagrams … page 284
  • 1.1 Indoor Units … page 284
  • 1.2 Outdoor Units … page 285
  • 2. Wiring Diagrams … page 287
  • 2.1 Indoor Units … page 287
  • 2.2 Outdoor Units … page 288
  • Index … i
  • Drawings & Flow Charts … vii