Single Split Wall Mounted H-Series – Service Manual

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

Indoor Units:
FTXS09HVJU ; FTXS12HVJU ; FTXS15HVJU ; FTXS18HVJU ; FTXS24HVJU
Outdoor Units:
RXS09DAVJU ; RXS12DAVJU ; RXS15DVJU ; RXS18DVJU ; RXS24DVJU ; RX09FAVJU ; RX12FAVJU ; RX15FVJU ; RX18FVJU ; RX24FVJU
 

CONTENTS:

  • Safety Considerations … vi
  • List of Functions … page 1

  • 1. Functions … page 2
  • Specifications … page 4

  • 1. Specifications … page 5
  • 1.1 SEER 16 Models … page 5
  • 1.2 SEER 13 Models … page 8
  • Printed Circuit Board
    Connector Wiring Diagram … page 11

  • 1. Printed Circuit Board Connector
    Wiring Diagram … page 12
  • 1.1 FTXS09/12HVJU … page 12
  • 1.2 FTXS15/18/24HVJU … page 14
  • 1.3 RXS09/12DAVJU, RX09/12FAVJU … page 16
  • 1.4 RXS15/18/24DVJU, RX15/18/24FVJU … page 18
  • Function and Control … page 21

  • 1. Main Functions … page 23
  • 1.1 Frequency Principle … page 23
  • 1.2 Power-Airflow Dual Louvers,
    Wide-Angle Fins and Auto-Swing … page 24
  • 1.3 Fan Speed Control for Indoor Units … page 25
  • 1.4 Program Dry Function … page 26
  • 1.5 Automatic Operation … page 27
  • 1.6 Thermostat Control … page 28
  • 1.7 NIGHT SET Mode … page 29
  • 1.8 INTELLIGENT EYE … page 30
  • 1.9 HOME LEAVE Operation … page 31
  • 1.10 Inverter POWERFUL Operation … page 32
  • 1.11 Other Functions … page 33
  • 2. Function of Thermistor … page 35
  • 3. Control Specification (09/12 Class) … page 36
  • 3.1 Mode Hierarchy … page 36
  • 3.2 Frequency Control … page 36
  • 3.3 Controls at Mode Changing / Start-up … page 38
  • 3.4 Discharge Pipe Temperature Control … page 40
  • 3.5 Input Current Control … page 40
  • 3.6 Freeze-up Protection Control … page 41
  • 3.7 Heating Peak-cut Control … page 42
  • 3.8 Fan Control … page 42
  • 3.9 Liquid Compression
    Protection Function 2 … page 42
  • 3.10 Defrost Control … page 43
  • 3.11 Electronic Expansion Valve Control … page 44
  • 3.12 Malfunctions … page 47
  • 3.13 Forced Operation Mode … page 48
  • 3.14 Additional Functions … page 48
  • 4. Control Specification (15/18/24 Class) … page 49
  • 4.1 Mode Hierarchy … page 49
  • 4.2 Frequency Control … page 50
  • 4.3 Controls at Mode Changing / Start-up … page 52
  • 4.4 Discharge Pipe Temperature Control … page 53
  • 4.5 Input Current Control … page 53
  • 4.6 Freeze-up Protection Control … page 54
  • 4.7 Heating Peak-cut Control … page 54
  • 4.8 Fan Control … page 55
  • 4.9 Liquid Compression Protection Function 2 … page 55
  • 4.10 Low Hz High Pressure Limit … page 55
  • 4.11 Defrost Control … page 56
  • 4.12 Electronic Expansion Valve Control … page 57
  • 4.13 Malfunctions … page 59
  • 4.14 Forced Operation Mode … page 61
  • 4.15 Additional Functions … page 61
  • Operation Manual … page 62

  • 1. System Configuration … page 63
  • 2. FTXS09/12HVJU … page 64
  • 3. FTXS15/18/24HVJU … page 77
  • Service Diagnosis … page 91
  • 1. Caution for Diagnosis … page 92
  • 2. Problem Symptoms and Measures … page 94
  • 3. Service Check Function … page 95
  • 4. Troubleshooting … page 98
  • 4.1 Error Codes and Description … page 98
  • 4.2 Indoor Unit PCB Abnormality … page 99
  • 4.3 Freeze-up Protection Control or
    High Pressure Control … page 100
  • 4.4 Fan Motor or Related Abnormality … page 102
  • 4.5 Thermistor or Related Abnormality
    (Indoor Unit) … page 105
  • 4.6 Signal Transmission Error (between Indoor
    and Outdoor Unit) … page 106
  • 4.7 OL Activation (Compressor Overload) … page 108
  • 4.8 Compressor Lock … page 109
  • 4.9 DC Fan Lock … page 111
  • 4.10 Input Overcurrent Detection … page 112
  • 4.11 Four-Way Valve Abnormality … page 115
  • 4.12 Discharge Pipe Temperature Control … page 119
  • 4.13 High Pressure Control in Cooling … page 121
  • 4.14 Position Sensor Abnormality … page 123
  • 4.15 DC Voltage / Current Sensor
    Abnormality … page 125
  • 4.16 CT or Related Abnormality … page 126
  • 4.17 Thermistor or Related Abnormality
    (Outdoor Unit) … page 128
  • 4.18 Electrical Box Temperature Rise … page 130
  • 4.19 Radiation Fin Temperature Rise … page 132
  • 4.20 Output Overcurrent Detection … page 134
  • 4.21 Refrigerant Shortage … page 138
  • 4.22 Over-voltage Detection … page 142
  • 4.23 Low-voltage Detection … page 143
  • 5. Check … page 144
  • 5.1 How to Check … page 144
  • Removal Procedure … page 153

  • 1. FTXS09/12HVJU … page 154
  • 1.1 Removal of Air Filter … page 154
  • 1.2 Removal of Front Grille … page 157
  • 1.3 Removal of Horizontal Blades (Louvers)
    and Vertical Blades (Fins) … page 160
  • 1.4 Removal of Electrical Box,
    PCB and Swing Motor … page 162
  • 1.5 Removal of Heat Exchanger … page 168
  • 1.6 Install of Drain Plug … page 171
  • 1.7 Removal of Fan Rotor and Fan Motor … page 173
  • 2. FTXS15/18/24HVJU … page 177
  • 2.1 Removal of the Air Filter /
    Front Panel … page 177
  • 2.2 Removal of Front Grille … page 181
  • 2.3 Removal of Horizontal Blades (Louvers) /
    Vertical Blades (Fins) … page 184
  • 2.4 Removal of Electrical Box /
    PCB / Swing Motor … page 187
  • 2.5 Removal of Heat Exchanger … page 195
  • 2.6 Removal of Fan Rotor / Fan Motor … page 198
  • 3. RXS09/12DAVJU, RX09/12FAVJU … page 201
  • 3.1 Removal of Panels and Fan Motor … page 201
  • 3.2 Removal of Electrical Box … page 210
  • 3.3 Removal of Reactor and
    Partition Plate … page 214
  • 3.4 Removal of Sound Blanket … page 216
  • 3.5 Removal of Four-Way Valve … page 218
  • 3.6 Removal of Compressor … page 221
  • 3.7 Removal of PCB … page 223
  • 4. RXS15/18/24DVJU, RX15/18/24FVJU … page 226
  • 4.1 Removal of Panels and Plates … page 226
  • 4.2 Removal of Fan Motor / Outdoor Fan … page 231
  • 4.3 Removal of PCB / Electrical Box … page 235
  • 4.4 Removal of the Reactor … page 244
  • 4.5 Removal of Sound Blanket … page 246
  • 4.6 Removal of Four-Way Valve … page 249
  • 4.7 Removal of Electronic Expansion Valve … page 250
  • 4.8 Removal of Compressor … page 251
  • Other Considerations … page 253

  • 1. Other Considerations … page 254
  • 1.1 Trial Operation … page 254
  • 1.2 Jumper Settings … page 255
  • 1.3 Application of Silicon Grease to Power
    Transistor and Diode Bridge … page 256
  • Appendix … page 257

  • 1. Piping Diagrams … page 258
  • 1.1 Indoor Units … page 258
  • 1.2 Outdoor Units … page 259
  • 2. Wiring Diagrams … page 261
  • 2.1 Indoor Units … page 261
  • 2.2 Outdoor Units … page 262