Daikin SiBE041010

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SiBE041010

i Table of Contents

Inverter Pair

Wall Mounted Type

J-Series

zHeat Pump

Indoor Units

FTX20JV1B ATX20JV1B

FTX25JV1B ATX25JV1B

FTX35JV1B ATX35JV1B

Outdoor Units

RX20JV1B ARX20JV1B

RX25JV1B ARX25JV1B

RX35JV1B ARX35JV1B

Main Page

Table of Contents3
Part 1 List of Functions3
Introduction6
- Safety Cautions6
- Used Icons10
Part 1 List of Functions11
Functions12
Part 2 Specifications13
Specifications14
Part 3 Printed Circuit Board Connector Wiring Diagram18
Printed Circuit Board Connector Wiring Diagram19
- Indoor Unit19
- Outdoor Unit21
Part 4 Function and Control23
Main Functions24
- Frequency Principle24
- Airflow Direction Control26
- Fan Speed Control for Indoor Units27
- Program Dry Operation28
- Automatic Operation29
- Thermostat Control30
- NIGHT SET Mode31
- ECONO Operation32
- Inverter POWERFUL Operation33
- Other Functions34
Function of Thermistor35
Control Specification36
- Mode Hierarchy36
- Frequency Control37
- Controls at Mode Changing / Start-Up39
- Discharge Pipe Temperature Control40
- Compressor Protection Function40
- Input Current Control41
- Freeze-Up Protection Control42
- Heating Peak-Cut Control42
- Outdoor Fan Control43
- Liquid Compression Protection Function43
- Defrost Control44
- Electronic Expansion Valve Control45
- Malfunctions48
- Forced Operation Mode49
Part 5 Operation Manual50
System Configuration51
Operation Manual52
- Remote Controller52
- AUTO · DRY · COOL · HEAT · FAN Operation53
- To Change the Airflow Rate Setting54
- Adjusting the Airflow Direction55
- POWERFUL Operation57
- ECONO Operation58
- TIMER Operation59
  - To Use on Timer Operation60
  - To Combine on Timer and off Timer60
Part 6 Service Diagnosis61
Caution for Diagnosis62
- Troubleshooting with LED62
Problem Symptoms and Measures63
Service Check Function64
Troubleshooting67
- Error Codes and Description67
- Indoor Unit PCB Abnormality68
- Freeze-Up Protection Control or Heating Peak-Cut Control69
- Fan Motor (DC Motor) or Related Abnormality71
- Thermistor or Related Abnormality (Indoor Unit)73
- Signal Transmission Error (between Indoor and Outdoor Unit)74
- Unspecified Voltage (between Indoor and Outdoor Unit)75
- Outdoor Unit PCB Abnormality76
- OL Activation (Compressor Overload)77
- Compressor Lock78
- DC Fan Lock79
- Input Overcurrent Detection80
- Four Way Valve Abnormality81
- Discharge Pipe Temperature Control83
- High Pressure Control in Cooling84
- Compressor System Sensor Abnormality85
- Position Sensor Abnormality86
- DC Voltage / Current Sensor Abnormality88
- Thermistor or Related Abnormality (Outdoor Unit)89
- Electrical Box Temperature Rise91
- Radiation Fin Temperature Rise93
- Output Overcurrent Detection95
- Refrigerant Shortage97
- Low-Voltage Detection or Over-Voltage Detection99
Check100
- How to Check100
Part 7 Removal Procedure110
Indoor Unit111
- Removal of Air Filter111
- Removal of Horizontal Blades / Fan Guard113
- Removal of Front Panel115
- Removal of Front Grille116
- Removal of Electrical Box / Vertical Blades118
- Removal of PCB / Swing Motor121
- Removal of Indoor Heat Exchanger125
- Removal of Fan Rotor128
- Exchange of Drain Hose131
Outdoor Unit132
- Removal of Panels132
- Removal of Outdoor Fan / Fan Motor134
- Removal of Electrical Box / Control PCB135
- Removal of Sound Blanket142
- Removal of Four Way Valve144
- Removal of Compressor147
Part 8 Others148
Others149
- Trial Operation149
- Field Settings150
  - When 2 Units Are Installed in 1 Room150
  - Jumper Settings150
- Application of Silicon Grease to a Power Transistor and a Diode Bridge151
Part 9 Appendix152
Piping Diagrams153
- Indoor Unit153
- Outdoor Unit154
Wiring Diagrams155
- Indoor Unit155
- Outdoor Unit155

Daikin SiBE041010 - Page 2

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