SkyAir H-Series Heat Pump FTXS30HVJU – RXS30HVJU ; FTXS36HVJU – RXS36HVJU – Service Manual

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

Indoor Units: FTXS30HVJU ; FTXS36HVJU
Outdoor Units: RXS30HVJU ; RXS36HVJU
 

CONTENTS:

    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 6

  • 1.Printed Circuit Board Connector Wiring
    Diagram … page 7
  • 1.1 Indoor Unit … page 7
  • 1.2 Outdoor Unit … page 9
  • Function and Control … page 11

  • 1.Main Functions … page 12
  • 1.1 Frequency Principle … page 12
  • 1.2 Airflow Direction Control … page 14
  • 1.3 Fan Speed Control for Indoor
    Units … page 15
  • 1.4 Program Dry Function … page 16
  • 1.5 Automatic Operation … page 17
  • 1.6 Thermostat Control … page 18
  • 1.7 NIGHT SET Mode … page 19
  • 1.8 ECONO Mode … page 20
  • 1.9 INTELLIGENT EYE … page 21
  • 1.10 Inverter POWERFUL Operation … page 23
  • 1.11 Other Functions … page 24
  • 2.Function of Thermistor … page 26
  • 3.Control Specification … page 27
  • 3.1 Mode Hierarchy … page 27
  • 3.2 Frequency Control … page 28
  • 3.3 Controls at Mode Changing /
    Start-up … page 30
  • 3.4 Discharge PipeTemperature
    Control … page 32
  • 3.5 Input Current Control … page 33
  • 3.6 Freeze-up Protection Control … page 34
  • 3.7 Heating Peak-Cut Control … page 34
  • 3.8 Fan Control … page 35
  • 3.9 Liquid Compression
    Protection Function 2 … page 35
  • 3.10 Defrost Control … page 35
  • 3.11 Electronic Expansion
    Valve Control … page 37
  • 3.12 Malfunctions … page 40
  • 3.13 Forced Operation Mode … page 41
  • 3.14 Additional Functions … page 41
  • 3.15 Facility Setting Switch (cooling at low
    outdoor temperature) … page 42
  • Operation Manual … page 44

  • 1.System Configuration … page 45
  • 2.Instruction … page 46
  • 2.1 Remote Controller … page 46
  • 2.2 AUTO · DRY · COOL · HEAT ·
    FAN Operation … page 48
  • 2.3 Adjusting the Airflow
    Direction … page 50
  • 2.4 COMFORT AIRFLOW Operation … page 52
  • 2.5 INTELLIGENT EYE Operation … page 53
  • 2.6 POWERFUL Operation … page 55
  • 2.7 OUTDOOR UNIT QUIET
    Operation … page 56
  • 2.8 ECONO Operation … page 57
  • 2.9 TIMER Operation … page 58
  • 2.10 WEEKLY TIMER Operation … page 60
  • Service Diagnosis … page 66

  • 1.Caution for Diagnosis … page 67
  • 2.Problem Symptoms and Measures … page 68
  • 3.Service Check Function … page 69
  • 4.Troubleshooting … page 72
  • 4.1 Error Codes and Description … page 72
  • 4.2 Indoor Unit PCB Abnormality … page 73
  • 4.3 Freeze-up Protection Control or High
    Pressure Control … page 74
  • 4.4 Fan Motor (DC Motor) or
    Related Abnormality … page 76
  • 4.5 Thermistor or Related Abnormality
    (Indoor Unit) … page 78
  • 4.6 Signal Transmission Error (between
    Indoor and Outdoor Unit) … page 79
  • 4.7 Unspecified Voltage (between Indoor
    and Outdoor Units) … page 80
  • 4.8 Outdoor Unit PCB Abnormality … page 81
  • 4.9 OL Activation (Compressor
    Overload) … page 82
  • 4.10 Compressor Lock … page 83
  • 4.11 DC Fan Lock … page 84
  • 4.12 Input Overcurrent Detection … page 85
  • 4.13 Four-Way Valve Abnormality … page 86
  • 4.14 Discharge Pipe Temperature
    Control … page 88
  • 4.15 High Pressure Control in
    Cooling … page 89
  • 4.16 Compressor System Sensor
    Abnormality … page 90
  • 4.17 Position Sensor Abnormality … page 91
  • 4.18 CT or Related Abnormality … page 93
  • 4.19 Thermistor or Related
    Abnormality (Outdoor Unit) … page 95
  • 4.20 Electrical Box Temperature Rise … page 97
  • 4.21 Radiation Fin Temperature Rise … page 98
  • 4.22 Output Overcurrent Detection … page 100
  • 4.23 Insufficient Gas … page 102
  • 4.24 Low-voltage Detection or
    Over-voltage Detection … page 104
  • 4.25 Signal Transmission Error on Outdoor
    Unit PCB … page 105
  • 5. Check … page 106
  • 5.1 How to Check … page 106
  • Removal Procedure … page 113

  • 1.Indoor Unit … page 114
  • 1.1 Removal of Air Filter /
    Front Panel … page 114
  • 1.2 Removal of Front Grille … page 117
  • 1.3 Removal of Electrical Box … page 120
  • 1.4 Removal of PCB … page 127
  • 1.5 Removal of Horizontal Blades
    (Louvers)/Vertical blades(Fins)/Swing Motors … page 135
  • 1.6 Removal of Fan Motor … page 143
  • 1.7 Removal of Heat Exchanger … page 146
  • 1.8 Removal of Fan Rotor … page 150
  • 2. Outdoor Unit… page 152
  • 2.1 Removal of Outer Panels … page 153
  • 2.2 Removal of the Electrical Box … page 166
  • 2.3 Removal of PCB … page 170
  • 2.4 Removal of Fan Motor … page 173
  • 2.5 Removal of Coils / Thermistors … page 174
  • 2.6 Removal of Sound Blanket … page 177
  • 2.7 Removal of Compressor … page 180
  • Other Considerations … page 182

  • 1. Other Considerations … page 183
  • 1.1 Trial Operation from the
    Remote Controller … page 183
  • 1.2 Jumper Settings … page 184
  • 1.3 Application of Silicon Grease
    to athe PowerTransistor and a Diode Bridge … page 185
  • Appendix … page 187

  • 1.Piping Diagrams … page 188
  • 2. iring Diagrams … page 189
  • Index … page 190
    Drawings & Flow Charts … page 194