Daikin Super Multi Plus D-Series Service Manual
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Daikin Super Multi Plus D-Series Service Manual

Daikin Super Multi Plus D-Series Service Manual

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Table of Contents

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SiEBE18-526
Service
Manual
D-Series
[Applied Models]
Super Multi Plus: Heat Pump

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Summary of Contents for Daikin Super Multi Plus D-Series

  • Page 1 SiEBE18-526 Service Manual D-Series [Applied Models] Super Multi Plus: Heat Pump...
  • Page 2 SiEBE18-526 SUPER MULTI PLUS D-Series Heat Pump Indoor Unit FTXS20D(2)VMW(L)(9) FDXS25CVMB FLXS25BVMB FFQ25B7V1B FTXS20DA(3)VMW(L)(7) FDXS25CAVMB FLXS25BAVMB FFQ35B7V1B FTXS25D(2)VMW(L)(9) FDXS35CVMB FLXS35BVMB FFQ50B7V1B FTXS25DA(3)VMW(L)(7) FDXS35CAVMB FLXS35BAVMB FFQ60B7V1B FTXS35D(2)VMW(L)(9) CDXS50CVMB FLXS50BVMB FHQ35BUV1B9 FTXS35DA(3)VMW(L)(7) CDXS60CVMB FLXS50BAVMB FHQ50BUV1B9 CTXS50D(2)VMW(L) FLXS60BVMB FHQ60BUV1B9 FTXS20CVMB(9) FLXS60BAVMB FTXS20CAVMB FVXS25BVMB FTXS25CVMB(9)(8) FVXS25BAVMB FTXS25CAVMB...

  • Page 3: Table Of Contents

    SiEBE18-526 1. Introduction ................... vii 1.1 Safety Cautions ..................vii Part 1 List of Functions ..............1 1. List of Functions ..................2 Part 2 Specifications ..............7 1. Specifications ..................8 1.1 Outdoor Units ...................8 1.2 BP Unit .....................9 1.3 Indoor Units ....................10 Part 3 Printed Circuit Board Connector Wiring Diagram ...
  • Page 4 SiEBE18-526 3.4 Pump-down Residual Operation ............65 3.5 Restart Standby..................65 3.6 Stopping Operation ................66 3.7 Pressure Equalization Prior to Startup ...........66 4. Protection Control .................67 4.1 High Pressure Protection Control............67 4.2 Low Pressure Protection Control............69 4.3 Discharge Pipe Protection Control ............70 4.4 Inverter Protection Control ..............71 4.5 Freeze-up Protection Control ..............72 4.6 Dew Condensation Prevention Control ..........73...
  • Page 5 SiEBE18-526 4.7 Maintenance Mode Setting..............137 5. Test Operation and Field Setting for RA Indoor Unit......138 5.1 Test Operation from the Remote Controller .........138 5.2 Jumper Settings ...................139 Part 7 System Configuration............. 141 1. System Configuration................142 1.1 Operation Instructions ................142 2. Instruction....................143 2.1 RMXS Series..................143 2.2 Wall Mounted, Duct, Floor/Ceiling, Floor Standing Type .....144 2.3 Ceiling Mounted Cassette Type ............216...
  • Page 6 SiEBE18-526 5.15 Check ....................285 6. Troubleshooting for BP Unit ..............287 6.1 Malfunction of Electronic Expansion Valve ..........287 6.2 Faulty BP Unit PCB ................288 6.3 Faulty BP Liquid or Gas Pipe Thermistor ..........289 6.4 Transmission Error between Indoor Unit and BP Unit......290 6.5 Transmission Error between Outdoor Unit and BP Unit.......292 6.6 Check ....................293 7.
  • Page 7 SiEBE18-526 2.2 Removal of Solenoid Valve Coil ............356 Part 10 Appendix................. 359 1. Piping Diagrams..................360 1.1 Outdoor Units ..................360 1.2 BP Units ....................361 1.3 Indoor Units ..................362 2. Wiring Diagrams..................367 2.1 Outdoor Units ..................367 2.2 BP Units ....................368 2.3 Indoor Units ..................369 Table of Contents...

  • Page 8: Introduction

    SiEBE18-526 Introduction 1. Introduction Safety Cautions Cautions and Be sure to read the following safety cautions before conducting repair work. Warnings The caution items are classified into “ Warning” and “ Caution”. The “ Warning” items are especially important since they can lead to death or serious injury if they are not followed closely.
  • Page 9 Introduction SiEBE18-526 Caution Do not repair the electrical components with wet hands. Working on the equipment with wet hands can cause an electrical shock. Do not clean the air conditioner by splashing water. Washing the unit with water can cause an electrical shock. Be sure to provide the grounding when repairing the equipment in a humid or wet place, to avoid electrical shocks.
  • Page 10 SiEBE18-526 Introduction Warning Be sure to use an exclusive power circuit for the equipment, and follow the technical standards related to the electrical equipment, the internal wiring regulations and the instruction manual for installation when conducting electrical work. Insufficient power circuit capacity and improper electrical work can cause an electrical shock or fire.
  • Page 11 Introduction SiEBE18-526 Warning Do not use a joined power cable or extension cable, or share the same power outlet with other electrical appliances, since it can cause an electrical shock, excessive heat generation or fire. Caution Check to see if the parts and wires are mounted and connected properly, and if the connections at the soldered or crimped terminals are secure.

  • Page 12: Part 1 List Of Functions

    SiEBE18-526 Part 1 List of Functions 1. List of Functions ..................2 List of Functions...

  • Page 13: List Of Functions

    List of Functions SiEBE18-526 1. List of Functions Category Functions Category Functions Basic Function Health & Clean Air Purifying Filter with Bacteriostatic & Inverter (with Inverter Power Control) — Virustatic Functions –5 Operation Limit for Cooling (°CDB) Photocatalytic Deodorizing Filter —...
  • Page 14 SiEBE18-526 List of Functions Category Functions Category Functions Inverter (with Inverter Power Control) Air Purifying Filter with Bacteriostatic, — — — Virustatic Functions Operation Limit for Cooling (°CDB) — — — Basic Operation Limit for Heating (°CWB) — — — Photocatalytic Deodorizing Filter —...
  • Page 15 List of Functions SiEBE18-526 Category Functions Category Functions Basic Health & Air Purifying Filter with Bacteriostatic & Inverter (with Inverter Power Control) — — — Function Clean Virustatic Functions Operation Limit for Cooling (°CDB) — — — Photocatalytic Deodorizing Filter —...
  • Page 16 SiEBE18-526 List of Functions Category Functions Category Functions Basic Function Health & Clean Air Purifying Filter with Bacteriostatic & Inverter (with Inverter Power Control) Virustatic Functions Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter Air Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
  • Page 17 List of Functions SiEBE18-526 Category Functions Category Functions Basic Health & Air Purifying Filter with Bacteriostatic & Inverter (with Inverter Power Control) — — Function Clean Virustatic Functions Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — — Air Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...

  • Page 18: Part 2 Specifications

    SiEBE18-526 Part 2 Specifications 1. Specifications ..................8 1.1 Outdoor Units ...................8 1.2 BP Unit .....................9 1.3 Indoor Units ....................10 Specifications...

  • Page 19: Specifications

    Specifications SiEBE18-526 1. Specifications Outdoor Units 50Hz 230V Model RMXS112D7V3B RMXS140D7V3B RMXS160D7V3B Cooling Capacity 11.2 (9,630) 14.0 (12,040) 15.5 (13,330) (kcal/h) Heating Capacity 12.5 (10,750) 16.0 (13,760) 17.5 (15,050) (kcal/h) Total Indoor Unit Capacity 5.5~14.5 7.0~18.2 8.0~20.8 Power Consumption — Running Current —...

  • Page 20: Bp Unit

    SiEBE18-526 Specifications BP Unit 50Hz 230V Model BPMKS967A2B, BPMKS967B2B BPMKS967A3B, BPMKS967B3B Connectable Indoor Units 1~2 Units 1~3 Units Casing Color Paintingless Power Consumption Running Current 0.05 0.05 Refrigerant Type R410A Dimension (H×W×D) 180×294(650)*×350 Package Dimension (H×W×D) 257×738×427 Machine Weight Gross Weight Number of Wiring Connections 4 for Interunit Wiring Main : φ9.5×1/ Branch : φ6.4×2...

  • Page 21: Indoor Units

    Specifications SiEBE18-526 Indoor Units Wall Mounted Type 50Hz 230V FTXS20D(2)VMW(9), FTXS20DA(3)VMW(7) FTXS20D(2)VML, FTXS20DA(3)VML Model Cooling Heating Cooling Heating Rated Capacity 2.0kW Class 2.0kW Class Front Panel Color White Silver Line 8.7 (307) 9.4 (332) 8.7 (307) 9.4 (332) 6.7 (237) 7.6 (268) 6.7 (237) 7.6 (268)
  • Page 22 SiEBE18-526 Specifications 50Hz 230V FTXS35D(2)VMW(9), FTXS35DA(3)VMW(7) FTXS35D(2)VML, FTXS35DA(3)VML Model Cooling Heating Cooling Heating Rated Capacity 3.5kW Class 3.5kW Class Front Panel Color White Silver Line 8.9 (314) 9.7 (342) 8.9 (314) 9.7 (342) 6.9 (244) 7.9 (279) 6.9 (244) 7.9 (279) m³/min Air Flow Rates (cfm)
  • Page 23 Specifications SiEBE18-526 50Hz 230V FTXS20CVMB(9), FTXS20CAVMB FTXS25CVMB(9)(8), FTXS25CAVMB Model Cooling Heating Cooling Heating Rated Capacity 2.5kW Class 2.5kW Class Front Panel Color White White 7.7 (272) 7.8 (275) 7.7 (272) 7.8 (275) 5.9 (208) 6.5 (230) 5.9 (208) 6.5 (230) m³/min Air Flow Rates (cfm)
  • Page 24 SiEBE18-526 Specifications 50Hz 230V FTXS60BVMB FTXS71BVMB Model Cooling Heating Cooling Heating Rated Capacity 6.0kW Class 7.1kW Class Front Panel Color White White 16.2 (572) 17.4 (614) 16.7 (590) 18.5 (653) 13.6 (480) 15.1 (533) 14.2 (501) 15.1 (533) m³/min Air Flow Rates (cfm) 11.4 (402) 12.7 (448)
  • Page 25 Specifications SiEBE18-526 Duct Connected Type 50Hz 230V FDXS25CVMB, FDXS25CAVMB FDXS35CVMB, FDXS35CAVMB Model Cooling Heating Cooling Heating Rated Capacity 2.5kW Class 3.5kW Class — — Front Panel Color 9.5 (335) 9.5 (335) 10.0 (353) 10.0 (353) 8.8 (311) 8.8 (311) 9.3 (328) 9.3 (328) m³/min Air Flow Rates...
  • Page 26 SiEBE18-526 Specifications Floor / Ceiling Suspended Dual Type 50Hz 230V FLXS25BVMB, FLXS25BAVMB FLXS35BVMB, FLXS35BAVMB Model Cooling Heating Cooling Heating Rated Capacity 2.5kW Class 3.5kW Class Front Panel Color Almond White Almond White 7.6 (268) 9.2 (325) 8.6 (304) 9.8 (346) 6.8 (240) 8.3 (293) 7.6 (268)
  • Page 27 Specifications SiEBE18-526 Floor Standing Type 50Hz 230V FVXS25BVMB, FVXS25BAVMB FVXS35BVMB, FVXS35BAVMB Model Cooling Heating Cooling Heating Rated Capacity 2.5kW Class 3.5kW Class Front Panel Color Almond White Almond White 8.1 (286) 9.2 (325) 8.3 (293) 9.2 (325) 6.2 (219) 7.0 (247) 6.3 (222) 7.1 (251) m³/min...

  • Page 28: Ceiling Mounted Cassette Type

    SiEBE18-526 Specifications Ceiling Mounted Cassette Type 50Hz 230V FFQ25B7V1B FFQ35B7V1B Model Cooling Heating Cooling Heating Rated Capacity 2.5kW Class 3.5kW Class Color White White Decoration Panel Dimensions (H×W×D) 55×700×700 55×700×700 9.0 (318) 9.0 (318) 10.0 (353) 10.0 (353) — — —...
  • Page 29 Specifications SiEBE18-526 Ceiling-suspended Type 50Hz 230V FHQ35BUV1B9 FHQ50BUV1B9 FHQ60BUV1B9 Model Cooling Heating Cooling Heating Cooling Heating Rated Capacity 3.5kW Class 5.0kW Class 6.0kW Class Color White White White Decoration Panel Dimensions (H×W×D) — — — 13.0 (458) 13.0 (458) 13.0 (458) 13.0 (458) 17.0 (600) 16.0 (565)

  • Page 30: Part 3 Printed Circuit Board Connector Wiring Diagram

    SiEBE18-526 Part 3 Printed Circuit Board Connector Wiring Diagram 1. Printed Circuit Board Connector Wiring Diagram........20 1.1 Outdoor Unit RMXS 112/140/160 D7V3B ..........20 1.2 Branch Provider Unit BPMKS967A2B, B2B, A3B, B3B ......24 1.3 Wall Mounted Type 20/25/35/50 Class - D Series .........25 1.4 Wall Mounted Type 20/25/35 Class - C Series ........27 1.5 Wall Mounted Type 50/60/71 Class - B Series........29 1.6 Duct Connected Type................31...

  • Page 31: Printed Circuit Board Connector Wiring Diagram

    Printed Circuit Board Connector Wiring Diagram SiEBE18-526 1. Printed Circuit Board Connector Wiring Diagram Outdoor Unit RMXS 112/140/160 D7V3B 1.1.1 Control PCB (A1P) Connectors 1) X1A Connector to Filter PCB (A3P) 2) X2A Connector for SVP (Hot Gas Bypass Valve) 3) X3A Connector for SVG (Receiver Gas Discharging Valve) 4) X5A...
  • Page 32 SiEBE18-526 Printed Circuit Board Connector Wiring Diagram PCB Detail X34A X37A X44A X45A X46A X25A X28A X26A to H7P to BS5 2P119093P Printed Circuit Board Connector Wiring Diagram and Name...
  • Page 33 Printed Circuit Board Connector Wiring Diagram SiEBE18-526 1.1.2 Inverter PCB (A2P) Connectors 1) X60A Connector for High Pressure Switch 2) X205A Connector for Control PCB (A1P) 3) X206A Connector for Fan Motor (Upper Side) 4) X207A Connector for Fan Motor (Lower Side) 5) LC, NC Terminal for Filter PCB (A3P) PCB Detail...
  • Page 34 SiEBE18-526 Printed Circuit Board Connector Wiring Diagram 1.1.3 Filter PCB (A3P) Connectors 1) X1A Connector for Control PCB (A1P) 2) LA, NA Terminal for X1M (Power Supply Terminal Strip) 3) LB, NB Terminal for Inverter PCB (A2P) Note: Other Designation 1) F1U Fuse (250V 6.3A) 2) GND...

  • Page 35: Branch Provider Unit Bpmks967A2B, B2B, A3B, B3B

    Printed Circuit Board Connector Wiring Diagram SiEBE18-526 Branch Provider Unit BPMKS967A2B, B2B, A3B, B3B Connectors 1) X20A Connector for Bypass Electronic Expansion Valve 2) X21A to X23A Connector for Electronic Expansion Valve to Room A, B and C 3) X90A Connector for Thermistors Note: Other Designations...

  • Page 36: Wall Mounted Type 20/25/35/50 Class - D Series

    SiEBE18-526 Printed Circuit Board Connector Wiring Diagram Wall Mounted Type 20/25/35/50 Class - D Series Connectors PCB(1) (Control PCB) 1) S1 Connector for DC fan motor 2) S6 Connector for swing motor (horizontal blades) 3) S21 Connector for centralized control (HA) 4) S26 Connector for display PCB 5) S28...
  • Page 37 Printed Circuit Board Connector Wiring Diagram SiEBE18-526 PCB Detail PCB(1): Control PCB LED A (R4288) PCB(2): Signal Receiver PCB PCB(3): Display PCB LED1 LED2 LED3 RTH1 (R4289) (R4290) PCB(4): INTELLIGENT EYE sensor PCB (R4291) Printed Circuit Board Connector Wiring Diagram and Name...

  • Page 38: Wall Mounted Type 20/25/35 Class - C Series

    SiEBE18-526 Printed Circuit Board Connector Wiring Diagram Wall Mounted Type 20/25/35 Class - C Series Connectors PCB(1) (Control PCB) 1) S1 Connector for fan motor 2) S6 Connector for swing motor (Horizontal Flap) 3) S7 Connector for AC fan motor 4) S21 Connector for centralized control to 5 rooms 5) S26...
  • Page 39 Printed Circuit Board Connector Wiring Diagram SiEBE18-526 PCB Detail PCB(1): Control PCB PCB(2): Signal Receiver PCB PCB(3): INTELLIGENT EYE Sensor PCB PCB (1) Control LED1 LED2 PCB (2) Signal reciever Pb Free LED3 RTH1 5V Check Pb Free 12V Check PCB (3) INTELLIGENT EYE sensor...

  • Page 40: Wall Mounted Type 50/60/71 Class - B Series

    SiEBE18-526 Printed Circuit Board Connector Wiring Diagram Wall Mounted Type 50/60/71 Class - B Series Connectors PCB(1) (Control PCB) 1) S1 Connector for DC fan motor 2) S6 Connector for swing motor (horizontal blades) 3) S8 Connector for swing motor (vertical blades) 4) S21 Connector for centralized control (HA) 5) S26...
  • Page 41 Printed Circuit Board Connector Wiring Diagram SiEBE18-526 PCB Detail PCB(1): Control PCB (indoor unit) LED A (R2860) PCB(2): Signal Receiver PCB PCB(3): Buzzer PCB (R2861) RTH1 (R2862) PCB(4): Display PCB PCB(5): Intelligent Eye sensor PCB LED1 LED2 LED3 (R2863) (R2864) Printed Circuit Board Connector Wiring Diagram and Name...

  • Page 42: Duct Connected Type

    SiEBE18-526 Printed Circuit Board Connector Wiring Diagram Duct Connected Type Connectors PCB(1) (Control PCB) 1) S1 Connector for AC fan motor 2) S7 Connector for AC fan motor 3) S21 Connector for centralized control to 5 rooms 4) S26 Connector for display PCB 5) S32 Connector for heat exchanger thermistor PCB(2) (Display PCB)

  • Page 43: Floor / Ceiling Suspended Dual Type

    Printed Circuit Board Connector Wiring Diagram SiEBE18-526 Floor / Ceiling Suspended Dual Type Connectors PCB(1) (Control PCB) 1) S6 Connector for swing motor (horizontal swing) 2) S7 Connector for AC fan motor 3) S21 Connector for centralized control 4) S24 Connector for display PCB 5) S26 Connector for signal receiver PCB...
  • Page 44 SiEBE18-526 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB (1): Control PCB Fb Free LED A 12V Check 5V Check 2P084352E PCB Detail PCB (2): Power Supply PCB Pb Free 2P084361E Printed Circuit Board Connector Wiring Diagram and Name...
  • Page 45 Printed Circuit Board Connector Wiring Diagram SiEBE18-526 PCB (3): Display PCB Pb Free LED2 LED1 LED3 2P084377C PCB (4): Signal Receiver PCB Pb Free 2P084377C Printed Circuit Board Connector Wiring Diagram and Name...

  • Page 46: Floor Standing Type

    SiEBE18-526 Printed Circuit Board Connector Wiring Diagram Floor Standing Type Connectors PCB(1) (Power Supply PCB) 1) S8, S202, Connector for control PCB S204 PCB(2) (Control PCB) 1) S6 Connector for swing motor and lower air outlet motor 2) S21 Connector for centralized control 3) S23 Connector for display PCB 4) S31, S32...
  • Page 47 Printed Circuit Board Connector Wiring Diagram SiEBE18-526 PCB Detail PCB (1): Power Supply PCB PCB1 S202 S204 2P044051F Printed Circuit Board Connector Wiring Diagram and Name...
  • Page 48 SiEBE18-526 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB (2): Control PCB PCB (3): Display PCB PCB (4): Signal Receiver PCB Pb Free S301 S302 Pb Free PCB 3 LED 14 PCB 4 PCB 2 S201 LED 12 Pb Free LED 11 LED A S203...

  • Page 49: Ceiling Mounted Cassette 600×600 Type

    Printed Circuit Board Connector Wiring Diagram SiEBE18-526 Ceiling Mounted Cassette 600×600 Type Connectors 1) X5A Connector for Terminal Strip (for Wired Remote Controller) 2) X15A Connector for Float Switch 3) X17A Connector for Heat Exchanger Thermistor (2) 4) X18A Connector for Heat Exchanger Thermistor (1) 5) X19A Connector for Room Temperature Thermistor 6) X20A...
  • Page 50 SiEBE18-526 Printed Circuit Board Connector Wiring Diagram PCB Detail X20A X25A X27A X33A X18A Capacity setting adaptor X19A X61A X36A X60A X40A (Service monitor LED) X24A X17A X35A X15A 2P095006T Printed Circuit Board Connector Wiring Diagram and Name...

  • Page 51: Ceiling Suspended Type

    Printed Circuit Board Connector Wiring Diagram SiEBE18-526 1.10 Ceiling Suspended Type Connectors 1) X5A Connector for Terminal Strip (for Wired Remote Controller) 2) X14A Connector for Limit Switch (for Swing Flap) 3) X15A Connector for Drain Pump (Optional Accessory) 4) X17A Connector for Heat Exchanger Thermistor (2) 5) X18A Connector for Heat Exchanger Thermistor (1)
  • Page 52 SiEBE18-526 Printed Circuit Board Connector Wiring Diagram PCB Detail Capacity setting adaptor X19A X18A X40A X15A X14A X17A X61A X35A X60A X33A (Service monitor LED) X24A X26A X29A X27A X20A X25A 2P095007U Printed Circuit Board Connector Wiring Diagram and Name...
  • Page 53 Printed Circuit Board Connector Wiring Diagram SiEBE18-526 Printed Circuit Board Connector Wiring Diagram and Name...

  • Page 54: Part 4 Refrigerant Circuit

    SiEBE18-526 Part 4 Refrigerant Circuit 1. Refrigerant Circuit .................44 1.1 RMXS 112/140/160 D7V3B..............44 1.2 BPMKS 967 A2B, B2B, A3B, B3B............46 2. Functional Parts Layout ................47 2.1 RMXS 112/140/160 D7V3B..............47 3. Refrigerant Flow for Each Operation Mode...........48 3.1 Cooling Operation ..................48 3.2 Heating Operation ..................49 3.3 Cooling Oil Return Operation ..............50 3.4 Heating Oil Return Operation &...

  • Page 55: Refrigerant Circuit

    Refrigerant Circuit SiEBE18-526 1. Refrigerant Circuit RMXS 112/140/160 D7V3B No. in refrigerant Symbol Name Major Function system diagram Inverter compressor is operated on frequencies between 52 Hz and 190 Hz by using Inverter compressor (INV) the inverter. 25 steps Since the system is of air heat exchanging type, the fan is operated at 8-step rotation Inverter fan speed by using the inverter.
  • Page 56 SiEBE18-526 Refrigerant Circuit Refrigerant Circuit Diagram (Q0371) Refrigerant Circuit...

  • Page 57: Bpmks 967 A2B, B2B, A3B, B3B

    Refrigerant Circuit SiEBE18-526 BPMKS 967 A2B, B2B, A3B, B3B No. in refrigerant Symbol Name Major Function system diagram Electronic expansion valve Among EVA, EVB and EVC, the electronic expansion valve of operating room is called (for operating room) EVU. Electronic expansion valve Among EVA, EVB and EVC, the electronic expansion valve of stopping room is called (for stopping room) EVT.

  • Page 58: Functional Parts Layout

    SiEBE18-526 Functional Parts Layout 2. Functional Parts Layout RMXS 112/140/160 D7V3B Birds-eye view Solenoid valve (Connector color : PINK) S1NPH High pressure sensor S1NPH (Connector color : RED) High pressure sensor lead wire (Connector color : RED) (Low voltage) Four way valve coil S1NPL Low pressure sensor Y1E Electronic expansion valve...

  • Page 59: Refrigerant Flow For Each Operation Mode

    Refrigerant Flow for Each Operation Mode SiEBE18-526 3. Refrigerant Flow for Each Operation Mode Cooling Operation Refrigerant Circuit...

  • Page 60: Heating Operation

    SiEBE18-526 Refrigerant Flow for Each Operation Mode Heating Operation Refrigerant Circuit...

  • Page 61: Cooling Oil Return Operation

    Refrigerant Flow for Each Operation Mode SiEBE18-526 Cooling Oil Return Operation Refrigerant Circuit...

  • Page 62: Heating Oil Return Operation & Defrost Operation

    SiEBE18-526 Refrigerant Flow for Each Operation Mode Heating Oil Return Operation & Defrost Operation Refrigerant Circuit...
  • Page 63 Refrigerant Flow for Each Operation Mode SiEBE18-526 Refrigerant Circuit...

  • Page 64: Part 5 Function

    SiEBE18-526 Part 5 Function 1. Operation Mode ..................54 2. Basic Control..................55 2.1 Normal Operation ...................55 2.2 Compressor PI Control................56 2.3 Electronic Expansion Valve PI Control...........59 2.4 Cooling Operation Fan Control...............60 3. Special Control..................61 3.1 Startup Control ..................61 3.2 Oil Return Operation ................62 3.3 Defrosting Operation ................64 3.4 Pump-down Residual Operation ............65 3.5 Restart Standby..................65...

  • Page 65: Operation Mode

    Operation Mode SiEBE18-526 1. Operation Mode Operation in stop mode Indoor unit stop or Indoor unit thermostat ON thermostat OFF Malfunction/Standby Restart standby Pressure (Compressor stop) equalization prior to startup Malfunction/ Standby Indoor unit stop or thermostat OFF Startup control •...

  • Page 66: Basic Control

    SiEBE18-526 Basic Control 2. Basic Control Normal Operation Cooling Operation Actuator Operation Remarks Used for high pressure protection control, low pressure protection control, discharge pipe temperature protection control, compressor Compressor Compressor PI control operating frequency upper limit control with inverter protection control, dew prevention control, and freeze-up protection control.

  • Page 67: Compressor Pi Control

    Basic Control SiEBE18-526 Compressor PI Control Compressor PI Control Carries out the compressor capacity PI control to maintain Te at constant during cooling operation and Tc at constant during heating operation to ensure stable unit performance. [Cooling operation] Controls compressor capacity to adjust Te to Te : Low pressure equivalent saturation achieve target value (TeS).
  • Page 68 SiEBE18-526 Basic Control ∆D Control Receiving the capacity request signal from the indoor unit, the outdoor unit corrects its target pressure for capacity control. Controls ∆D signal from indoor unit as follows. UP control : When the UP command come from more than one indoor unit among thermostat-ON indoor units.
  • Page 69 Basic Control SiEBE18-526 Heating Operation TcS = TcS initial value + KTc2 KTc2 : Correction value by ∆D signal in heating. KTc2 = 0 (without correction) During compressor frequency PI Not during compressor frequency PI control (KTc2 = 0) control ∆...

  • Page 70: Electronic Expansion Valve Pi Control

    SiEBE18-526 Basic Control Electronic Expansion Valve PI Control Main Electronic Expansion Valve EV1 Control Carries out the electronic expansion valve (Y1E) PI control to maintain the evaporator outlet superheated degree (SH) at constant during heating operation to make maximum use of the outdoor unit heat exchanger (evaporator).

  • Page 71: Cooling Operation Fan Control

    Basic Control SiEBE18-526 Cooling Operation Fan Control In cooling operation with low outdoor air temperature, this control is used to provide the adequate amount of circulation air with liquid pressure secured by high pressure control using outdoor unit fan. Outline In cooling operation fan control, outdoor unit fans are controlled by PI control to come the cooling Tc to 34°C.

  • Page 72: Special Control

    SiEBE18-526 Special Control 3. Special Control Startup Control On activation, following control is performed to lighten load of the compressor by back liquid and the like. Also, the position of the four way valve is defined. 3.1.1 Startup Control in Cooling Operation Actuator Operation Remarks...

  • Page 73: Oil Return Operation

    Special Control SiEBE18-526 Oil Return Operation Oil flown from the compressor to the side of system is collected by oil-returning operation, in case of that oil in the compressor runs down. 3.2.1 Oil Return Operation in Cooling Operation [Conditions to start] The cooling oil-returning operation is started referring following conditions.
  • Page 74 SiEBE18-526 Special Control 3.2.2 Oil Return Operation in Heating Operation [Conditions to start] The heating oil-returning operation is started referring following conditions. Integrated amount of displaced oil Timer (After the power is turned on, integrated operating-time is 2 hours and subsequently every 8 hours.) In addition, integrated amount of displaced oil is derived from Tc, Te, and the compressor load.

  • Page 75: Defrosting Operation

    Special Control SiEBE18-526 Defrosting Operation The defrost operation is performed to solve frost on the outdoor unit heat exchanger when heating, and the heating capacity is recovered. [Conditions to start] The defrost operation is started referring following conditions. Outdoor heat exchanger heat transfer co-efficiency Temperature of heat-exchange (Tb) Low pressure equivalent saturation temperature (Te) Timer (2 hours at the minimum)

  • Page 76: Pump-Down Residual Operation

    SiEBE18-526 Special Control Pump-down Residual Operation When activating compressor, if the liquid refrigerant remains in the heat-exchanger, the liquid enters into the compressor and dilutes oil therein resulting in decrease of lubricity. Therefore, the pump-down residual operation is performed to collect the refrigerant in the heat- exchanger when the compressor is down.

  • Page 77: Stopping Operation

    Special Control SiEBE18-526 Stopping Operation 3.6.1 When System is in Stop Mode Actuator Operation Compressor Outdoor unit fan Four way valve Keep former condition. Main electronic expansion valve (EV1) 0 pls Subcooling electronic expansion valve (EV2) 0 pls Hot gas bypass valve (SVP) Receiver gas discharging valve (SVG) Ending conditions Indoor unit thermostat is turned ON.

  • Page 78: Protection Control

    SiEBE18-526 Protection Control 4. Protection Control High Pressure Protection Control This high pressure protection control is used to prevent the activation of protection devices due to abnormal increase of high pressure and to protect compressors against the transient increase of high pressure. In cooling operation Pc >...
  • Page 79 Protection Control SiEBE18-526 In heating operation High pressure not limited • INV upper limit frequency & • Pc≤2.95MPa • During heating normal operation • During oil return operation • Not during oil return operation • After oil return operation • Not after oil return operation &...

  • Page 80: Low Pressure Protection Control

    SiEBE18-526 Protection Control Low Pressure Protection Control This low pressure protection control is used to protect compressors against the transient decrease of low pressure. In cooling operation Low pressure not limited Pe: LP pressure sensor detection value < > 0.25MPa 0.4MPa Low pressure SVP=OFF...

  • Page 81: Discharge Pipe Protection Control

    Protection Control SiEBE18-526 Discharge Pipe Protection Control This discharge pipe protection control is used to protect the compressor internal temperature against a malfunction or transient increase of discharge pipe temperature. INV compressor HTdi: Value of INV compressor discharge pipe temperature (Tdi) compensated with outdoor air temperature Value of compressor port temperature calculated by Tc and Te, and suction...

  • Page 82: Inverter Protection Control

    SiEBE18-526 Protection Control Inverter Protection Control Inverter current protection control and inverter fin temperature control are performed to prevent tripping due to a malfunction, or transient inverter overcurrent, and fin temperature increase. Inverter overcurrent protection control Not limited • Inverter current≤23.8A &...

  • Page 83: Freeze-Up Protection Control

    Protection Control SiEBE18-526 Freeze-up Protection Control Outline According to the freeze prevention status sent from the BP unit. The compressor output frequency is regulated to decrease the compressor capacity in order to prevent the indoor heat exchanger from freezing. Detail Zones are produced based on the freeze prevention status signal sent from the BP unit (Indoor unit), and the freeze prevention control prevents freezing of the indoor unit.

  • Page 84: Dew Condensation Prevention Control

    SiEBE18-526 Protection Control Dew Condensation Prevention Control Outline According to the dew condensation prevention status sent from the BP unit. The compressor output frequency is regulated to decrease the compressor capacity in order to prevent the indoor unit from dew condensation. Detail Zones are produced based on the dew condensation prevention status signal sent from the BP unit (Indoor unit), and the dew condensation prevention control prevents dew condensation of...

  • Page 85: Other Control

    Other Control SiEBE18-526 5. Other Control Demand Operation In order to save the power consumption, the capacity of outdoor unit is saved with control forcibly by using “Demand 1 Setting” or “Demand 2 Setting”. To operate the unit with this mode, additional setting of “Continuous Demand Setting” or external input by external control adaptor is required.

  • Page 86: Bp Unit Control

    SiEBE18-526 BP Unit Control 6. BP Unit Control BP Unit Command Conversion 1. ∆D (room temperature − temperature setting) signals from BP units are converted to capacity up / down signal. ∆D signals from BP units are used as the capacity up / down signal in frequency commands (excludes when Powerful function is in operation).

  • Page 87: Bp Unit Electronic Expansion Valve Control

    BP Unit Control SiEBE18-526 BP Unit Electronic Expansion Valve Control Purpose of the This function provides instructions regarding the absolute flow rate, relative flow rate and fully closing from the outdoor unit to the BP unit in order to ensure outdoor unit compressor safety Function and optimum refrigerating cycle of the system.
  • Page 88 SiEBE18-526 BP Unit Control 6.2.3 Full Closing of Electronic Expansion Valves Purpose of the The electronic expansion valves are initialized when the power is turned on. Function Details The following processes are conducted. 1. Conducts P1 pulses close when power is turned on, and sets current opening to 0 pulse (fully closing process).

  • Page 89: Sh Control In Cooling Operation

    BP Unit Control SiEBE18-526 SH Control in Cooling Operation Purpose of the This function ensures appropriate refrigerant distribution when many room units are operating in the cooling mode. Function Outline The heat exchanger temperatures and gas pipe temperatures of operating room units are detected by the gas pipe thermistors, and the electronic expansion valves' flow rates are corrected so as to adjust the difference between heat exchanger temperature and gas pipe temperature of each room unit (hereafter referred to as SH) close to the target values.

  • Page 90: Sc Control In Heating Operation

    SiEBE18-526 BP Unit Control Note: 1. In Sky Air models, the indoor units are equipped with distribution capillary tubes ; therefore, the heat exchangers may superheat even when the condition is met. 2. In Sky Air models, the heat exchanger intermediate position is provided on the liquid connection pipe side;...

  • Page 91: Indoor Unit (Ra Models)

    Indoor Unit (RA Models) SiEBE18-526 7. Indoor Unit (RA Models) Power-Airflow Dual Flaps, Wide Angle Louvers and Auto-Swing Power-airflow The large flaps send a large volume of air downwards to the floor. The flap provides an optimum Dual Flaps control area in cooling, heating and dry mode. Heating Mode During heating mode, the large flap enables direct warm air straight downwards.

  • Page 92: Fan Speed Control For Indoor Units

    SiEBE18-526 Indoor Unit (RA Models) Fan Speed Control for Indoor Units Control Mode The airflow rate can be automatically controlled depending on the difference between the set temperature and the room temperature. This is done through phase control and Hall IC control. For more information about Hall IC, refer to the troubleshooting for fan motor on page 260.

  • Page 93: Programme Dry Function

    Indoor Unit (RA Models) SiEBE18-526 Programme Dry Function Programme dry function removes humidity while preventing the room temperature from lowering. Since the microcomputer controls both the temperature and air flow volume, the temperature adjustment and fan adjustment buttons are inoperable in this mode. In Case of The microcomputer automatically sets the temperature and fan settings.

  • Page 94: Automatic Operation

    SiEBE18-526 Indoor Unit (RA Models) Automatic Operation Automatic Cooling / Heating Function (Heat Pump Only) When the AUTO mode is selected with the remote controller, the microcomputer automatically determines the operation mode from cooling and heating according to the room temperature and setting temperature at the time of the operation startup, and automatically operates in that mode.

  • Page 95: Thermostat Control

    Indoor Unit (RA Models) SiEBE18-526 Thermostat Control Thermostat control is based on the difference between the room temperature and the setpoint. Thermostat OFF Condition The temperature difference is in the zone A. Thermostat ON Condition The temperature difference is above the zone C after being in the zone A. The system resumes from defrost control in any zones except A.

  • Page 96: Night Set Mode

    SiEBE18-526 Indoor Unit (RA Models) Night Set Mode When the OFF timer is set, the Night Set circuit automatically activates. The Night Set circuit maintains the airflow setting made by users. The Night Set The Night Set circuit continues heating or cooling the room at the set temperature for the first Circuit one hour, then automatically raises the temperature setting slightly in the case of cooling, or lowers it slightly in the case of heating, for economical operations.

  • Page 97: Econo Mode

    Indoor Unit (RA Models) SiEBE18-526 ECONO Mode Outline FTXS20-35D, CTXS50D The "ECONO mode" reduces the maximum operating current and power consumption by approx. 30% during start up etc.. This mode is particularly convenient for energy-saving-oriented users. It is also a major bonus for those whose breaker capacities do not allow the use of multiple electrical devices and air conditioners.

  • Page 98: Intelligent Eye

    SiEBE18-526 Indoor Unit (RA Models) INTELLIGENT EYE This is the function that detects existence of humans in the room by a human motion sensor (INTELLIGENT EYE) and reduces the capacity when there is no human in the room in order to save electricity.
  • Page 99 Indoor Unit (RA Models) SiEBE18-526 Since the set temperature is shifted by 2°C higher for 40 minutes, compressor speed becomes low and can realize energy saving operation. But as thermostat is prone to be off by the fact that the set temperature has been shifted, the thermostat-off action is prohibited in 40 minutes so as to prevent this phenomena.

  • Page 100: Home Leave Operation

    SiEBE18-526 Indoor Unit (RA Models) HOME LEAVE Operation Outline In order to respond to the customer's need for immediate heating and cooling of the room after returning home or for house care, a measure to switch the temperature and air volume from that for normal time over to outing time by one touch is provided.

  • Page 101: Inverter Powerful Operation

    Indoor Unit (RA Models) SiEBE18-526 7.10 Inverter POWERFUL Operation Outline In order to exploit the cooling and heating capacity to full extent, operate the air conditioner by increasing the indoor fan rotating speed and the compressor frequency. Details of the When POWERFUL button is pushed in each operation mode, the fan speed / setting Control temperature will be converted to the following states in a period of twenty minutes.

  • Page 102: Other Functions

    SiEBE18-526 Indoor Unit (RA Models) 7.11 Other Functions 7.11.1 Hot Start Function Heat Pump Only In order to prevent the cold air blast that normally comes when heating is started, the temperature of the heat exchanger of the indoor unit is detected, and either the air flow is stopped or is made very weak thereby carrying out comfortable heating of the room.
  • Page 103 Indoor Unit (RA Models) SiEBE18-526 7.11.7 Air Purifying Filter with Photocatalytic Deodorizing Function This filter incorporates the benefits the Air Purifying Filter and Photocatalytic Deodorizing Filter in a single unit. Combining the two filters in this way increases the active surface area of the new filter.

  • Page 104: Indoor Unit (Skyair Models)

    SiEBE18-526 Indoor Unit (SkyAir Models) 8. Indoor Unit (SkyAir Models) Function Outline FFQ-B, FHQ-B (Input) (Output) Indoor Unit Thermostat Control Two thermostats used, suction Suction Sensor(R1T) and remote control. Fan Motor Monitoring Function Drain Pump Heat Exchanger Sensor Cool/Heat Automatic Optional for FHQ (R2T) Function...

  • Page 105: Electric Function Parts

    Indoor Unit (SkyAir Models) SiEBE18-526 Electric Function Parts FFQ – BV1B Capacity Remarks Wired remote controller BRC1C517 Optional (BRC1C61 for Australia) Accessory Wireless remote Heat pump BRC7E(A)530W Optional controller Accessory Cooling only BRC7E(A)531W Electronic control unit [2P095006-2] EC0280 Fan motor [3P104408-1] 4P 55W Fan motor capacitor 4.0MF 440VAC...

  • Page 106: Function Details

    SiEBE18-526 Indoor Unit (SkyAir Models) Function Details Thermostat Control 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 Initial setting Set temperature -2.5 -2 +2.5 Cooling thermostat ON Cooling thermostat OFF Heating thermostat OFF Heating...
  • Page 107 Indoor Unit (SkyAir Models) SiEBE18-526 Condensation Avoidance Continuous 30 minutes operation of cooling One hour drying Control (FHQ Only) After continuous 30 minutes of operation with downward The unit operation can be reset with changing operation horizontal blade position, change the blade position to mode into "heating"...
  • Page 108 SiEBE18-526 Indoor Unit (SkyAir Models) 1-2 Operations when an occurrence of water level abnormality 1-2-a) Behavior between occurrence and recovery of water level abnormality After compressor stops due to water level abnormality, drain pump is operated intermittently, i.e. 5 min ON, 5 sec OFF and 5 min ON.
  • Page 109 Indoor Unit (SkyAir Models) SiEBE18-526 2. Heating 2-1 Basic operation In heating operation of the unit equipped with a humidifier, when "Interlocking of drain pump / humidifier" (15(25)-3) is set to "yes" (02), the drain pump operates 20-min OFF and 3-min ON repeatedly during compressor is in operation.
  • Page 110 SiEBE18-526 Indoor Unit (SkyAir Models) 2-2-a)-2 When a water level abnormality occurs during drain pump OFF The abnormality is determined when 80 seconds elapse from compressor stop. Other than above, behavior is same as 2-2-a). Occurrence of drain water level abnormality Intermittent operation (*1) 5min 5min...
  • Page 111 Indoor Unit (SkyAir Models) SiEBE18-526 Using Conditions (Applicable models: FHQ & FFQ only) Remote controller thermostat is equipped only in wired remote controller. for Remote Even when “ use remote controller thermostat ” is selected in service mode, the remote Controller controller thermostat may not be used.
  • Page 112 SiEBE18-526 Indoor Unit (SkyAir Models) Program Dry The points of thermostat ON or OFF are determined according to the suction air temperature at the startup of unit operation. Operation The set temperature and flow rate are not displayed on remote controller. Function Operation startup Thermostat...
  • Page 113 Indoor Unit (SkyAir Models) SiEBE18-526 Fan and Flap Operations Flap Remote Controller FHQ & FFQ Indication Heating Hot Start from Defrost In Swing Horizontal Swing Operation Operation In Airflow Horizontal Set Position Direction Setting Defrost In Swing Horizontal Swing Operation In Airflow Horizontal Set Position...
  • Page 114 SiEBE18-526 Indoor Unit (SkyAir Models) Mode Conflict [Overview] While the indoor unit for another room and the outdoor unit are operating, when the indoor unit for the own room is activated, the operation mode which can be selected in the own room has some restrictions as mentioned below.
  • Page 115 Indoor Unit (SkyAir Models) SiEBE18-526 Non-operating [Overview] After operating an indoor unit for the own room in the cooling mode or dry mode, stop the unit Room Dew using the remote controller. Under the condition, when an unit for another room is started Prevention Fan operation in the heating mode, the fan in the own room may rotate in the LL mode even though Control...

  • Page 116: Part 6 Test Operation

    SiEBE18-526 Part 6 Test Operation 1. Test Operation ..................106 1.1 Procedure and Outline .................106 2. Outdoor Unit PCB Layout..............111 3. Field Setting ..................112 3.1 Field Setting from Outdoor Unit............112 3.2 Detail of Setting Mode ................118 4. Field Setting for SkyAir Indoor Unit .............128 4.1 Explanation...................128 4.2 Field Setting ..................129 4.3 Initial Setting Contents .................130...

  • Page 117: Test Operation

    Test Operation SiEBE18-526 1. Test Operation Procedure and Outline Follow the following procedure to conduct the initial test operation after installation. 1.1.1 Check work prior to turn power supply on Is the power supply single-phase 220-230V / 50Hz? Check the below items. Have you finished a ductwork to drain? 2Power wiring Have you detach transport fitting?
  • Page 118 SiEBE18-526 Test Operation 1.1.3 Judging and reprogramming in case of redundant BP addresses The BP unit of this system is provided with specific addresses in its production stage. These addresses are used to conduct various controls. If by any chance (on 3 out of 260000 units) these addresses are redundant, the system may get in trouble.
  • Page 119 Test Operation SiEBE18-526 Example of DIP switch (DS2) settings on the BP unit's PCB DS2-1 DS2-2 DS2-3 DS2-4 BP unit 1 BP unit 2 BP unit 3 DS1~4 : Factory setting is OFF. The BP unit 1 through 3 show the first through third unit, respectively. The order of these units is flexible.

  • Page 120: Check Operation

    SiEBE18-526 Test Operation 1.1.7 Check Operation * During check operation, mount front panel to avoid the misjudging. * Check operation is mandatory for normal unit operation. (When the check operation is not executed, alarm code "U3" will be displayed.) Press and hold the TEST ⎧...
  • Page 121 Test Operation SiEBE18-526 1.1.8 Confirmation on Normal Operation • Conduct normal unit operation after the check operation has been completed. (When outdoor air temperature is 30°CDB or higher, the unit can not be operated with heating mode. See the installation manual attached.) •...

  • Page 122: Outdoor Unit Pcb Layout

    SiEBE18-526 Outdoor Unit PCB Layout 2. Outdoor Unit PCB Layout Outdoor Unit PCB (2) Set mode display (LED) (3) Mode setting switch H1P H2P H3P H4P H5P H6P H7P BS4 BS5 MODE RETURN TEST RESET (1) Microcomputer normal monitor 1 2 3 4 1 2 3 4 (4)Local setting switch Connection terminal for transmission use...

  • Page 123: Field Setting

    Field Setting SiEBE18-526 3. Field Setting Field Setting from Outdoor Unit 3.1.1 Setting by dip switches The following field settings are made by dip switches on PC board. Dipswitch Setting item Description Setting Cool / Heat Used to set cool / heat change over setting by DS1-1 change over remote controller equipped with outdoor unit.
  • Page 124 SiEBE18-526 Field Setting Setting by pushbutton switches The following settings are made by pushbutton switches on PC board. LED indication (Factory setting) MODE RETURN TEST RESET (V2760) There are the following three setting modes. Setting mode 1 (H1P off) Initial status (when normal) : Also indicates during “abnormal”. Setting mode 2 (H1P on) Used to modify the operating status and to set program addresses, etc.
  • Page 125 Field Setting SiEBE18-526 a. “Setting mode 1” “Normally, “Setting mode 1” is set. In case of other status, push MODE button (BS1) one time and set to “Setting mode 1”. Display for malfunction/preparing/test-run LED display example ∗ The current state is displayed. Setting (displaying) item Normal Malfunction...
  • Page 126 SiEBE18-526 Field Setting b. “Setting mode 2” Setting item Description Indoor unit forced Allows forced operation of indoor unit fan while unit is fan H stopped. (H tap) Push and hold the MODE button (BS1) for 5 seconds and set to Indoor unit forced Allows forced operation of indoor unit.
  • Page 127 Field Setting SiEBE18-526 Setting item display C/H selection Setting condition display MODE TEST Demand Setting item noise Master Slave ∗ Factory set 8777778 ∗ Normal operation Indoor forced fan H Indoor forced fan H 8777787 8777778 ∗ Normal operation Indoor forced operation Indoor forced operation 8777787...
  • Page 128 SiEBE18-526 Field Setting c. Monitor mode LED display Setting item Data display To enter the monitor mode, push the 9 7 7 7 7 7 7 Various settings See below MODE button (BS1) when in “Setting 9 7 7 7 8 7 8 Number of connected indoor units Lower 6 digits mode 1”.

  • Page 129: Detail Of Setting Mode

    Field Setting SiEBE18-526 Detail of Setting Mode 3.2.1 Cool / Heat Mode Switching There are the following 2 cool/heat switching modes. Set cool/heat separately for each outdoor unit system by indoor unit remote controller. Set cool/heat separately for each outdoor unit system by cool/heat switching remote controller.
  • Page 130 SiEBE18-526 Field Setting Set Cool / Heat Separately for Each Outdoor Unit System by Cool/Heat Switching Remote Controller Set outdoor unit PC board DS1-1 to “outdoor” (factory set). Set cool/heat switching to “individual” for “Setting mode 1” (factory set). TEST C/H SELECT MODE L.N.O.P.
  • Page 131 Field Setting SiEBE18-526 3.2.2 Setting of Low Noise Operation and Demand Operation Setting of Low Noise Operation By connecting the external contact input to the low noise input of the outdoor unit external control adaptor (optional), you can lower operating noise by 2-3 dB. A.
  • Page 132 SiEBE18-526 Field Setting Image of operation in the case of A If capacity precedence is set in Operation sound “Capacity precedence setting”, the fan speed will be increased according to the load of air conditioning when load is heavier. Rated operation sound Operation sound during low Low noise mode instructing...
  • Page 133 Field Setting SiEBE18-526 Setting of Demand Operation By connecting the external contact input to the demand input of the outdoor unit external control adaptor (optional), the power consumption of unit operation can be saved suppressing the compressor operating condition. A. When the demand operation is carried out by external instructions (with the use of the outdoor unit external control adaptor).

  • Page 134: Image Of Operation In The Case Of A And B

    SiEBE18-526 Field Setting Image of operation in the case of A Power consumption The power Rated power consumption consumption during the demand level 1 80 % of rated power consumption Demand level 1 instructing Demand level 2 instructing Demand level 3 instructing instructing can be 70 % of rated power consumption 60 % of rated power consumption...
  • Page 135 Field Setting SiEBE18-526 Detailed Setting Procedure of Low Noise Operation and Demand Control 1. Setting mode 1 (H1P off) In setting mode 2, push the BS1 (MODE button) one time. → Setting mode 2 is entered and H1P lights. During the setting mode 1 is displayed, “In low noise operation” and “In demand control” are displayed.
  • Page 136 SiEBE18-526 Field Setting Settin Setting Setting No. indication Setting No. indication Setting Setting contents indication (Initial setting) g No. contents contents H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P Night quiet mode (Factory...
  • Page 137 Field Setting SiEBE18-526 3.2.3 Setting of Refrigerant Recovery Mode When carrying out the refrigerant collection on site, fully open the respective expansion valve of BP and outdoor unit. Both the outdoor unit and the indoor unit are forbidden to operation. Operation In setting mode 2 with units in stop mode, set “B Refrigerant Recovery / Vacuuming mode”...
  • Page 138 SiEBE18-526 Field Setting 3.2.5 Check Operation To prevent any trouble in the period of installation at site, the system is provided with a test operation mode enabling check for incorrect wiring, stop valve left in closed, and judgment of piping length. CHECK OPERATION FUNCTION LED display (H1P~H7P) ( BLINKING...

  • Page 139: Field Setting For Skyair Indoor Unit

    Field Setting for SkyAir Indoor Unit SiEBE18-526 4. Field Setting for SkyAir Indoor Unit Explanation Field set is carried out from the remote controller. At time of installation, or after maintenance inspection/repair, carry out field set according to the explanation below. Incorrect settings will cause a malfunction to occur.

  • Page 140: Field Setting

    SiEBE18-526 Field Setting for SkyAir Indoor Unit Field Setting 4.2.1 Wired Remote Controller Note: (Field setting must be made from the remote controller in accordance with the installation conditions.) Setting can be made by changing the “Mode number”, “FIRST CODE NO.”, and “SECOND CODE NO.”.

  • Page 141: Initial Setting Contents

    Field Setting for SkyAir Indoor Unit SiEBE18-526 4.2.2 Wireless Remote Controller Note: If optional accessories are mounted on the indoor unit, the indoor unit setting may have to be changed. Refer to the instruction manual (optional hand book) for each optional accessory. Procedure 1.

  • Page 142: Local Setting Mode Number

    SiEBE18-526 Field Setting for SkyAir Indoor Unit Local Setting Mode Number Example To set the filter sign time to “filter contamination - heavy” for all units in a group: Set mode No. to “10,” setting switch No. to “0,” and setting position No. to “02.” Table (FHQ &...

  • Page 143: Detailed Explanation Of Setting Modes

    Field Setting for SkyAir Indoor Unit SiEBE18-526 Detailed Explanation of Setting Modes 4.5.1 Air Flow Direction Setting (FFQ) Set the air flow direction of indoor units as given in the table below. (Set when optional air outlet blocking pad has been installed.) The second code No. is factory set to “01.” Setting Table Mode No.
  • Page 144 SiEBE18-526 Field Setting for SkyAir Indoor Unit 4.5.5 Fan Speed Changeover When Thermostat is OFF (FFQ & FHQ) By setting to “Set Fan Speed,” you can switch the fan speed to the set fan speed when the heating thermostat is OFF. ∗...
  • Page 145 Field Setting for SkyAir Indoor Unit SiEBE18-526 Address Setting <Setting from the remote controller> 1. Hold down the “ ” button and the “ ” button for at least 4 seconds, to get (It is Factory Set the FIELD SET MODE. (Indicated in the display area in the figure at below). to “1”) 2.
  • Page 146 SiEBE18-526 Field Setting for SkyAir Indoor Unit After Setting Stick the Unit No. label at decoration panel air discharge outlet as well as on the back of the wireless remote controller. Infrared remote control Unit No. label Decoration panel PRECAUTIONS Set the Unit No.

  • Page 147: Centralized Group No. Setting

    Field Setting for SkyAir Indoor Unit SiEBE18-526 Centralized Group No. Setting If carrying out centralized control with a central remote controller and unified ON/OFF controller, you have to set the group No. for each group by remote controller. To set the group No., first turn on the power supply of the central remote controller, unified ON/OFF controller and indoor unit.

  • Page 148: Maintenance Mode Setting

    SiEBE18-526 Field Setting for SkyAir Indoor Unit Maintenance Mode Setting Procedure 1. Enter the field set mode. Continue to push the inspection / test operation button for a minimum of 4 seconds. 2. Enter the maintenance mode. After having entered the field set mode, continue to push the inspection / test operation button for a minimum of 4 seconds.

  • Page 149: Test Operation And Field Setting For Ra Indoor Unit

    Test Operation and Field Setting for RA Indoor Unit SiEBE18-526 5. Test Operation and Field Setting for RA Indoor Unit Test Operation from the Remote Controller For Heat pump In cooling mode, select the lowest programmable temperature; in heating mode, select the highest programmable temperature.

  • Page 150: Jumper Settings

    SiEBE18-526 Test Operation and Field Setting for RA Indoor Unit Jumper Settings 5.2.1 When Two Units are Installed in One Room When two indoor units are installed in one room, the two wireless remote controllers can be set for different addresses. How to set the different addresses Control PCB of the indoor unit (1) Remove the electrical box.
  • Page 151 Test Operation and Field Setting for RA Indoor Unit SiEBE18-526 5.2.3 Adjusting the Angle of the Intelligent Eye Sensor FTXS20-35C Once installation of the indoor unit is complete, adjust the angle of the Intelligent eye sensor to ensure the detection area properly covers the room. (Adjustable angle : 15°...

  • Page 152: Part 7 System Configuration

    SiEBE18-526 Part 7 System Configuration 1. System Configuration................142 1.1 Operation Instructions ................142 2. Instruction....................143 2.1 RMXS Series..................143 2.2 Wall Mounted, Duct, Floor/Ceiling, Floor Standing Type .....144 2.3 Ceiling Mounted Cassette Type ............216 2.4 Ceiling Suspended Type ..............227 System Configuration...

  • Page 153: System Configuration

    System Configuration SiEBE18-526 1. System Configuration Operation Instructions After the installation and test operation of the room air conditioner have been completed, it should be operated and handled as described below. Every user would like to know the correct method of operation of the room air conditioner, to check if it is capable of cooling (or heating) well, and to know a clever method of using it.

  • Page 154: Instruction

    SiEBE18-526 Instruction 2. Instruction RMXS Series REGARDING USE Super Multi Plus System air conditioner POINTS THE CUSTOMER SHOULD BE AWARE OF COMFORT At startup • After the power is initially turned on, it will take approx. 10 minutes until startup. Usually the unit will start in 5 minutes.

  • Page 155: Wall Mounted, Duct, Floor/Ceiling, Floor Standing Type

    Instruction SiEBE18-526 Wall Mounted, Duct, Floor/Ceiling, Floor Standing Type 2.2.1 Manual Contents and Reference Page Wall Mounted Type Model Series FTXS20~35D FTXS20~35C FTXS50~71B CTXS50D Read before Operation Safety Precautions Names of Parts Preparation before Operation H Operation AUTO, DRY, COOL, HEAT, FAN Operation H Adjusting the Air Flow Direction POWERFUL Operation H...

  • Page 156: Safety Precautions

    • Do not attempt to repair, relocate, modify or reinstall the air conditioner by yourself. Incorrect work will cause electric shocks, fire etc. For repairs and reinstallation, consult your Daikin dealer for advice and information. • The refrigerant used in the air conditioner is safe. Although leaks should not occur, if for some reason any refrigerant happens to leak into the room, make sure it does not come in contact with any flame as of gas heaters, kerosene heaters or gas range.

  • Page 157: Installation Site

    Instruction SiEBE18-526 • Do not stand or sit on the outdoor unit. Do not place any object on the unit to avoid injury, do not remove the fan guard. • Do not place anything under the indoor or outdoor unit that must be kept away from moisture. In certain conditions, moisture in the air may condense and drip.
  • Page 158 SiEBE18-526 Instruction 2.2.3 Names of Parts FTXS20/25/35D, CTXS50D Names of parts Indoor Unit ON/OFF System Configuration...

  • Page 159: Outdoor Unit

    Instruction SiEBE18-526 Outdoor Unit Indoor Unit 1. Air filter 12. Indoor Unit ON/OFF switch: • Push this switch once to start operation. Push 2. Titanium Apatite Photocatalytic once again to stop it. Air-Purifying Filter: • The operation mode refers to the following •...

  • Page 160: Remote Control

    SiEBE18-526 Instruction Remote control ECONO ON/OFF TEMP POWERFUL MODE SWING SILENT COMFORT SENSOR CANCEL TIMER < > ARC433A50, 43 1. Signal transmitter: 8. SILENT button: OUTDOOR UNIT SILENT • It sends signals to the indoor unit. operation 2. Display: 9. FAN setting button: •...
  • Page 161 Instruction SiEBE18-526 FTXS20/25/35C Names of parts Indoor Unit System Configuration...

  • Page 162: Indoor Unit

    SiEBE18-526 Instruction Outdoor Unit Indoor Unit 1. Air filter 12. Indoor UnitON/OFF switch: • Push this switch once to start operation. 2. Air purifying filter with photocatalytic Push once again to stop it. deodorizing function: • The operation mode refers to the following •...
  • Page 163 Instruction SiEBE18-526 Remote Control HOME LEAVE ON/OFF TEMP POWERFUL MODE SWING SILENT SENSOR CANCEL TIMER < > ARC433A1, A2 1. Signal transmitter: (AUTO/DRY/COOL/HEAT/FAN) • It sends signals to the indoor unit. 8. SILENT button: for OUTDOOR UNIT 2. Display: SILENT operation •...
  • Page 164 SiEBE18-526 Instruction FTXS50/60/71B Names of parts Indoor Unit The illustration shows a 50-class unit Main unit control panel System Configuration...
  • Page 165 Instruction SiEBE18-526 Outdoor Unit Indoor Unit 14. Indoor Unit ON/OFF switch: 1. Air filter • Push this switch once to start operation. 2. Air purifying filter with photocatalytic Push once again to stop it. deodorizing function: • The operation mode refer to the following table. •...
  • Page 166 SiEBE18-526 Instruction Remote control HOME LEAVE ON/OFF TEMP POWERFUL MODE SILENT SENSOR SWING CANCEL TIMER < > ARC433A21, A22 1. Signal transmitter: 8. SILENT button: for OUTDOOR UNIT SILENT operation • It sends signals to the indoor unit. 9. FAN setting button: 2.
  • Page 167 Instruction SiEBE18-526 FDXS25/35C, CDXS50/60C Names of parts Indoor Unit System Configuration...
  • Page 168 SiEBE18-526 Instruction Outdoor Unit Indoor Unit 1. Air outlet 10. Indoor Unit ON/OFF switch • Push this switch once to start operation. 2. Air outlet grille (Field supply) Push once again to stop it. • Appearance of the Air outlet grille and Air inlet •...
  • Page 169 Instruction SiEBE18-526 Remote Control HOME LEAVE ON/OFF TEMP POWERFUL MODE SILENT CANCEL TIMER < > ARC433A7, A8 1. Signal transmitter: 7. MODE selector button: • It sends signals to the indoor unit. • It selects the operation mode. (AUTO/DRY/COOL/HEAT/FAN) 2. Display: 8.
  • Page 170 SiEBE18-526 Instruction FLXS25/35/50/60B Names of parts Indoor Unit The indoor unit can be installed either to the ceiling or to a wall. The descriptions contained in this manual show the case when installation is being carried out to the ceiling. (The methods of operation used are the same when installing to a wall.) Opening the front grille How to open the front grille...
  • Page 171 Instruction SiEBE18-526 Outdoor Unit Indoor Unit 13. Indoor unit ON/OFF switch 1. Louvres (vertical blades): • Push this switch once to start operation. The louvres are inside of the air outlet. Push once again to stop it. 2. Air outlet •...
  • Page 172 SiEBE18-526 Instruction Remote Control HOME LEAVE ON/OFF TEMP POWERFUL MODE SWING SILENT CANCEL TIMER < > ARC433A5, A6 1. Signal Transmitter: 7. MODE selector button: • It sends signals to the indoor unit. • It selects the operation mode. (AUTO/DRY/COOL/HEAT/FAN) 2.
  • Page 173 Instruction SiEBE18-526 FVXS25/35/50B Names of parts Indoor Unit O F F Opening the front grille How to open the grille Air outlet selection switch 12 13 • This setting blows air from upper outlet only. This setting automatically decides a blow •...
  • Page 174 SiEBE18-526 Instruction Outdoor Unit Indoor Unit • The operation mode refers to the following 1. Photocatalytic deodorizing filter and table. Air purifying filter: • These filters are attached to the inside of the air Temperature Air flow Mode filters. setting rate 2.
  • Page 175 Instruction SiEBE18-526 Remote Control HOME LEAVE ON/OFF TEMP POWERFUL MODE SWING SILENT CANCEL TIMER < > ARC433A5, A6 1. Signal Transmitter: • It selects the operation mode. (AUTO/DRY/COOL/HEAT/FAN) • It sends signals to the indoor unit. 8. SILENT button: for OUTDOOR UNIT 2.
  • Page 176 SiEBE18-526 Instruction 2.2.4 Preparation before Operation Preparation Before Operation To set the batteries Position + and – correctly! 1. Press with a finger and slide the front cover to take it off. 2. Set two dry batteries (AAA). 3. Set the front cover as before. ATTENTION About batteries •...
  • Page 177 Instruction SiEBE18-526 Preparation Before Operation To operate the remote control • To use the remote control, aim the transmitter at the indoor unit. If there is anything to block signals between the unit and the remote control, such as a curtain, the unit will not operate. •...
  • Page 178 SiEBE18-526 Instruction To set the clock 1. Press “CLOCK button”. is displayed. blinks. 2. Press “TIMER setting button” to set the clock to the present time. Holding down “ ” or “ ” button rapidly HOME LEAVE ON/OFF increases or decreases the time display. TEMP POWERFUL 3.
  • Page 179 Instruction SiEBE18-526 2.2.5 AUTO · DRY · COOL · HEAT · FAN Operation AUTO · DRY · COOL · HEAT · FAN Operation The air conditioner operates with the operation mode of your choice. From the next time on, the air conditioner will operate with the same operation mode.
  • Page 180 SiEBE18-526 Instruction To change the air flow rate setting 5. Press “FAN setting button”. AUTO or COOL or HEAT or FAN mode DRY mode Five levels of air flow rate setting from “ ” to “ ” plus “ ” “ ”...

  • Page 181: Adjusting The Air Flow Direction

    Instruction SiEBE18-526 2.2.6 Adjusting the Air Flow Direction FTXS20/25/35D, CTXS50D Adjusting the Air Flow Direction You can adjust the air flow direction to increase your comfort. To adjust the horizontal blades (flaps) 1. Press “SWING button”. • “ ” is displayed on the LCD and the flaps will begin to swing.
  • Page 182 SiEBE18-526 Instruction To start COMFORT AIRFLOW operation 3. Press “COMFORT AIRFLOW button”. The flap position will change, preventing air from blowing directly on the occupants of the room. • “ ” is displayed on the LCD. 〈COOL/DRY〉 The flap will go up. 〈HEAT〉...
  • Page 183 Instruction SiEBE18-526 FTXS20/25/35C Adjusting the Air Flow Direction You can adjust the air flow direction to increase your comfort. To adjust the horizontal blades (flaps) 1. Press “SWING button”. The display will light up and the flaps will begin to swing. HOME LEAVE ON/OFF 2.
  • Page 184 SiEBE18-526 Instruction To adjust the vertical blades (louvres) Hold the knob and move the louvres. (You will find a knob on the left-side and the right-side blades.) Notes on flaps and louvres angles • When “SWING button” is selected, the flaps In DRY mode or COOL mode swinging range depends on the operation mode.
  • Page 185 Instruction SiEBE18-526 FTXS50/60/71B Adjusting the Air Flow Direction You can adjust the air flow direction to increase your comfort. To adjust the horizontal blade (flap) 1. Press “SWING button ”. • “ ” is displayed on the LCD. HOME LEAVE 2.
  • Page 186 SiEBE18-526 Instruction To 3-D Airflow 1. 3. Press the “SWING button ” and the “SWING button ”: the “ ” and “ ” display will light up and the flap and louvers will move in turn. To cancel 3-D Airflow 2.
  • Page 187 Instruction SiEBE18-526 FLXS25/35/50/60B Adjusting the Air Flow Direction You can adjust the air flow direction to increase your comfort. To adjust the horizontal blade (flap) 1. Press “SWING button”. The display will light up and the flaps will begin to swing. HOME LEAVE ON/OFF 2.
  • Page 188 SiEBE18-526 Instruction To adjust the vertical blades (louvres) • When adjusting the louvre, use a robust and stable stool and watch your steps carefully. Hold the knob and move the louvres. (You will find a knob on the left side and the right side blades.) Notes on flap and louvres angles •...
  • Page 189 Instruction SiEBE18-526 FVXS25/35/50B Adjusting the Air Flow Direction You can adjust the air flow direction to increase your comfort. To adjust the horizontal blade (flap) 1. Press “SWING button”. The display will light up and the flaps will begin to swing. HOME LEAVE ON/OFF 2.
  • Page 190 SiEBE18-526 Instruction Air flow selection • Make air flow selection according to what suits you. When setting the air flow selection switch to • Air conditioner automatically decides the appropriate blowing pattern depending on the operating mode/situation. Operating mode Situation Blowing pattern •...

  • Page 191: Powerful Operation

    Instruction SiEBE18-526 2.2.7 POWERFUL Operation POWERFUL Operation POWERFUL operation quickly maximizes the cooling (heating) effect in any operation mode. You can get the maximum capacity . To start POWERFUL operation 1. Press “POWERFUL button”. • POWERFUL operation ends in 20 minutes. Then the system automatically operates again with the settings which were used HOME LEAVE...
  • Page 192 SiEBE18-526 Instruction 2.2.8 OUTDOOR UNIT SILENT Operation OUTDOOR UNIT SILENT Operation OUTDOOR UNIT SILENT operation lowers the noise level of the outdoor unit by changing the frequency and fan speed on the outdoor unit. This function is convenient during night. To start OUTDOOR UNIT SILENT operation 1.

  • Page 193: Econo Operation

    Instruction SiEBE18-526 2.2.9 ECONO Operation ECONO Operation ECONO operation is a function which enables efficient operation by lowering the maximum power consumption value. To start ECONO operation 1. Press “ECONO button”. • “ ” is displayed on the LCD. To cancel ECONO operation 2.
  • Page 194 SiEBE18-526 Instruction 2.2.10 HOME LEAVE Operation HOME LEAVE Operation HOME LEAVE operation is a function which allows you to record your preferred temperature and air flow rate settings. To start HOME LEAVE operation 1. Press “HOME LEAVE button” . • The HOME LEAVE lamp lights up. To cancel HOME LEAVE 1, 2 HOME LEAVE...
  • Page 195 Instruction SiEBE18-526 What’s the HOME LEAVE operation Is there a set temperature and air flow rate which is most comfortable, a set temperature and air flow rate which you use the most? HOME LEAVE operation is a function that allows you to record your favorite set temperature and air flow rate.

  • Page 196: Intelligent Eye Operation

    SiEBE18-526 Instruction 2.2.11 INTELLIGENT EYE Operation FTXS20/25/35D, CTXS50D INTELLIGENT EYE Operation “INTELLIGENT EYE” is the infrared sensor which detects the human movement. ■ To start INTELLIGENT EYE operation 1. Press “SENSOR button”. • “ ” is displayed on the LCD. ■...
  • Page 197 Instruction SiEBE18-526 INTELLIGENT EYE Operation “INTELLIGENT EYE” is useful for Energy Saving Energy saving operation • Change the temperature –2°C in heating / +2°C in cooling / +2°C in dry mode from set temperature. • Decrease the air flow rate slightly in fan operation. (In FAN mode only) Notes on “INTELLIGENT EYE”...
  • Page 198 SiEBE18-526 Instruction FTXS20/25/35C INTELLIGENT EYE Operation “INTELLIGENT EYE” is the infrared sensor which detects the human movement. To start INTELLIGENT EYE operation 1. Press “SENSOR button”. To cancel the INTELLIGENT EYE HOME LEAVE ON/OFF operation TEMP POWERFUL 2. Press “SENSOR button” again. [EX.] MODE SWING...
  • Page 199 Instruction SiEBE18-526 To adjust the angle of the INTELLIGENT EYE sensor • You can adjust the angle of the INTELLIGENT EYE sensor to increase the detection area. (Adjustable angle: 15° to right and left of centre) INTELLIGENT EYE 15˚ 15˚ sensor •...
  • Page 200 SiEBE18-526 Instruction FTXS50/60/71B INTELLIGENT EYE Operation “INTELLIGENT EYE” is the infrared sensor which detects the human movement. To start INTELLIGENT EYE operation 1. Press “SENSOR button”. To cancel the HOME LEAVE INTELLIGENT EYE ON/OFF TEMP POWERFUL operation 2. Press “SENSOR button” again. MODE [EX.] SILENT...
  • Page 201 Instruction SiEBE18-526 “INTELLIGENT EYE” is useful for Energy Saving Energy saving operation • Change the temperature –2°C in heating / +2°C in cooling / +1°C in dry mode from set temperature. • Decrease the air flow rate slightly in fan operation. (In FAN mode only) Notes on “INTELLIGENT EYE”...

  • Page 202: Timer Operation

    SiEBE18-526 Instruction 2.2.12 TIMER Operation TIMER Operation Timer functions are useful for automatically switching the air conditioner on or off at night or in the morning. You can also use OFF TIMER and ON TIMER in combination. To use OFF TIMER opera- tion •...
  • Page 203 Instruction SiEBE18-526 To use ON TIMER operation • Check that the clock is correct. If not, set the clock to the present time (page 9.). 1. Press “ON TIMER button”. is displayed. blinks. 2. Press “TIMER Setting button” until the time setting reaches HOME LEAVE ON/OFF the point you like.

  • Page 204: Note For Multi System

    SiEBE18-526 Instruction 2.2.13 Note for Multi System Note for Multi System < < What is a “Multi System”? > > This system has one outdoor unit connected to multiple indoor units. Functions depend on the model. room Outdoor unit Selecting the Operation Mode room Living 1.

  • Page 205: Care And Cleaning

    Instruction SiEBE18-526 2.2.14 Care and Cleaning FTXS20/25/35D, CTXS50D Care and Cleaning Before cleaning, be sure to stop the operation and CAUTION turn the breaker OFF. Units Indoor unit, Outdoor unit and Remote control 1. Wipe them with dry soft cloth. Front panel 1.

  • Page 206: Air Filter

    SiEBE18-526 Instruction Filters 1. Open the front panel. 2. Pull out the air filters. • Push a little upwards the tab at the center of each air filter, then pull it down. 3. Take off the Titanium Apatite Photocatalytic Air-Purifying Filter. •...
  • Page 207 Instruction SiEBE18-526 NOTE • Operation with dirty filters: (1) cannot deodorize the air. (2) cannot clean the air. (3) results in poor heating or cooling. (4) may cause odour. • To order Titanium Apatite Photocatalytic Air-Purifying Filter contact to the service shop there you bought the air conditioner.
  • Page 208 SiEBE18-526 Instruction FTXS20/25/35C Care and Cleaning Before cleaning, be sure to stop the operation and CAUTION turn the breaker OFF. Units Indoor unit, Outdoor unit and Remote control 1. Wipe them with dry soft cloth. Front grille 1. Open the front grille. •...
  • Page 209 Instruction SiEBE18-526 Filters 1. Open the front grille. 2. Pull out the air filters. • Push a little upwards the tab at the center of each air filter, then pull it down. 3. Take off the air purifying filter with Air purifying filter photocatalytic deodorizing function.
  • Page 210 SiEBE18-526 Instruction Check Check that the base, stand and other fittings of the outdoor unit are not decayed or corroded. Check that nothing blocks the air inlets and the outlets of the indoor unit and the outdoor unit. Check that the drain comes smoothly out of the drain hose during COOL or DRY operation. •...
  • Page 211 Instruction SiEBE18-526 FTXS50/60/71B Care and Cleaning CAUTION Before cleaning, be sure to stop the operation and turn the breaker OFF. Units Indoor unit, Outdoor unit and Remote control 1. Wipe them with dry soft cloth. Front grille 1. Open the front grille. •...
  • Page 212 SiEBE18-526 Instruction Filters 1. Open the front grille. 2. Pull out the air filters. • Push a little upwards the tab at the center of each air filter, then pull it down. 3. Take off the air tabs (3 tabs at top) purifying filter with photocatalytic deodorizing function.
  • Page 213 Instruction SiEBE18-526 Check Check that the base, stand and other fittings of the outdoor unit are not decayed or corroded. Check that nothing blocks the air inlets and the outlets of the indoor unit and the outdoor unit. Check that the drain comes smoothly out of the drain hose during COOL or DRY operation. •...

  • Page 214: Cleaning The Air Filter

    SiEBE18-526 Instruction FDXS25/35C, CDXS50/60C Care and Cleaning • Only a qualified service person is allowed to CAUTION perform maintenance. • Before cleaning, be sure to stop the operation and turn the breaker OFF. Cleaning the air filter. 1. Removing the air filter. •...
  • Page 215 • Clean the drain pan periodically, or drain piping may be clogged with dust and may result in water leakage. Ask your DAIKIN dealer to clean them. • Prepare a cover locally to prevent any dust in the air around the indoor unit from getting in the drain pan, if there is a great deal of dust present.
  • Page 216 SiEBE18-526 Instruction FLXS25/35/50/60B Care and Cleaning Before cleaning, be sure to stop the operation and CAUTION turn the breaker OFF. Units Indoor unit, Outdoor unit and Remote control 1. Wipe them with dry soft cloth. Front grille 1. Open the front grille. •...
  • Page 217 Instruction SiEBE18-526 Filters 1. Open the front grille. 2. Pull out the air filters. • Push upwards the tab at the center of each air filter, then pull it down. 3. Take off the air purifying filter, photocatalytic deodorizing filter. •...
  • Page 218 SiEBE18-526 Instruction Check Check that the base, stand and other fittings of the outdoor unit are not decayed or corroded. Check that nothing blocks the air inlets and the outlets of the indoor unit and the outdoor unit. Check that the drain comes smoothly out of the drain hose during COOL or DRY operation. If no drain water is seen, water may be leaking from the indoor unit.
  • Page 219 Instruction SiEBE18-526 FVXS25/35/50B Care and Cleaning Before cleaning, be sure to stop the operation and CAUTION turn the breaker OFF. Units Indoor unit, Outdoor unit and Remote control 1. Wipe them with dry soft cloth. Front grille 1. Open the front grille. •...
  • Page 220 SiEBE18-526 Instruction Filters 1. Open the frontgrille. 2. Remove the air filter. • Press the claws on the right and left of the air filter down slightly, then pull upward. 3. Take off the air purifying filter, Photocatalytic deodorizing filter. •...
  • Page 221 Instruction SiEBE18-526 Check Check that the base, stand and other fittings of the outdoor unit are not decayed or corroded. Check that nothing blocks the air inlets and the outlets of the indoor unit and the outdoor unit. Check that the drain comes smoothly out of the drain hose during COOL or DRY operation. If no drain water is seen, water may be leaking from the indoor unit.

  • Page 222: Trouble Shooting

    SiEBE18-526 Instruction 2.2.15 Troubleshooting Trouble Shooting These cases are not troubles. The following cases are not air conditioner troubles but have some reasons. You may just continue using it. Case Explanation Operation does not start soon. • This is to protect the air conditioner. You should wait for about 3 minutes.
  • Page 223 Instruction SiEBE18-526 Check again. Please check again before calling a repair person. Case Check The air conditioner does not • Hasn’t a breaker turned OFF or a fuse blown? operate. • Isn’t it a power failure? (OPERATION lamp is off) •...

  • Page 224: Disposal Requirements

    SiEBE18-526 Instruction Call the service shop immediately. WARNING When an abnormality (such as a burning smell) occurs, stop operation and turn the breaker OFF. Continued operation in an abnormal condition may result in troubles, electric shocks or fire. Consult the service shop where you bought the air conditioner. Do not attempt to repair or modify the air conditioner by yourself.
  • Page 225 Instruction SiEBE18-526 Fault diagnosis FAULT DIAGNOSIS BY REMOTE CONTROL In the ARC433A series, the temperature display sections on the main unit indicate corresponding codes. 1. When the TIMER CANCEL button is held down for 5 seconds, a “ ” indication flashes on the temperature display section.
  • Page 226 SiEBE18-526 Instruction LED ON OUTDOOR UNIT PCB 3MXS, 3MKS, 4MXS, 4MKS series GREEN MICROCOMPUTER MALFUNCTION NORMAL DETECTION LED-A LED1 LED2 LED3 LED4 DIAGNOSIS NORMAL CHECK INDOOR UNIT HIGH PRESSURE PROTECTOR WORKED OR FREEZE-UP IN OPERATING UNIT OR STAND-BY UNIT ∗ OVERLOAD RELAY WORKED OR HIGH DISCHARGE PIPE TEMPERATURE FAULTY COMPRESSOR START INPUT OVERCURRENT...

  • Page 227: Ceiling Mounted Cassette Type

    Instruction SiEBE18-526 Ceiling Mounted Cassette Type TEST AVAILABLE TEST System Configuration...
  • Page 228 (In case of group control system, one group of indoor units) The unit is individually operated. Outdoor unit NOTE • Contact your Daikin dealer in case of changing Unit with Unit with the combination or setting of group control and remote remote two remote controllers control system.

  • Page 229: Safety Considerations

    Instruction SiEBE18-526 the level of limiting concentration, an oxygen 2. SAFETY CONSIDERATIONS deficiency accident may happen. For installation of separately sold component We recommend that you read this instruction parts, ask a specialist. manual carefully before use to gain full advantage Be sure to use the separately sold component parts of the function of the air conditioner, and to avoid designated by our company.

  • Page 230: Operation Range

    SiEBE18-526 Instruction DB: Dry bulb temperature (°C) Do not expose animals and plants directly to WB: Wet bulb temperature (°C) the wind from the air conditioner. The setting temperature range of the remote control Adverse influence to animals and plants may °...

  • Page 231: Operation Procedure

    • Operating procedure varies with heat pump type DISPLAY “ ” (AIR FLOW FLAP) and cooling only type. Contact your Daikin dealer Refer to “AIR FLOW DIRECTION ADJUST”. to confirm your system type. • To protect the unit, turn on the main power switch 6 hours before operation.
  • Page 232 • The heating capacity of the air conditioner declines • The movable limit of the flap is changeable. as the outside air temperature falls.In such a case, Contact your Daikin dealer for details. use the air conditioner in combi-nation with other heating systems.

  • Page 233: Optimum Operation

    Instruction SiEBE18-526 Press the AIR FLOW DIRECTION ADJUST button to select the air direction as following. PROGRAMMING TIME The AIR FLOW FLAP display swings as shown left and the Press the PROGRAMMING TIME button and air flow direction continuously set the time for stopping or starting the varies.
  • Page 234 SiEBE18-526 Instruction • Do not place other heaters directly below the Fig. 1 indoor unit. They may deform due to the heat. • Never place objects near the air inlet and the air outlet of the unit. It may cause deterioration in the effect or stop in the operation.
  • Page 235 Instruction SiEBE18-526 5. Shut the suction grille. Directly apply the type of detergent used for Refer to item No.1. cleaning ventilation fans or ovens, wait 10 minutes, and then rinse with water. 6. After turning on the power, press FILTER 5.
  • Page 236 It is necessary to clean operates in a mode different to what is the inside of the indoor unit. Ask your Daikin shown on the remote control display. dealer for details on cleaning the unit. This When using a unit in a multi system, the operation requires a qualified service person.
  • Page 237 3. The system operates but it does not suffi- take the measures shown below and contact ciently cool or heat. your Daikin dealer. • If the air inlet or outlet of the indoor or the outdoor The system must be repaired by a qualified service unit is blocked with obstacles.

  • Page 238: Ceiling Suspended Type

    SiEBE18-526 Instruction Ceiling Suspended Type 5 12 TEST AVAILABLE TEST System Configuration...
  • Page 239 Instruction SiEBE18-526 • The precautions described below are WARN- Ask your dealer to move and reinstall the air ING and CAUTION. These are very important conditioner. precautions concerning safety. Be sure to Incomplete installation may result in a failure, a observe all of them without fail.
  • Page 240 SiEBE18-526 Instruction Be sure the air conditioner is electrically grounded. HEATING Do not connect the grounding conductor to a gas pipe, INDOOR OUTDOOR water pipe, lightning arrester, and the grounding OUTDOOR UNIT TEMPERATURE TEMPERATURE conductor for a telephone. – 9 to 21 Imperfect grounding work may result in an electric shock.
  • Page 241 Instruction SiEBE18-526 • Make sure that a separate power supply DISPLAY “ ” “ ” “ ” “ ” “ ” circuit is provided for this air conditioner (OPERATION MODE) and that all electrical work is carried out by This display shows the current OPERATION qualified personnel according to local laws MODE.
  • Page 242 Refer to figure 1 on page [1] DEFROST OPERATION, the system returns to • Operating procedure varies with heat pump type HEATING OPERATION. and cooling only type. Contact your Daikin dealer Regarding outside air temperature and to confirm your system type. heating capacity •...
  • Page 243 Your hand may get caught if you attempt to make adjustments while the unit is swinging. B. Left and right direction A. UP AND DOWN DIRECTION • The movable limit of the flap is changeable. Contact your Daikin dealer for details. System Configuration...
  • Page 244 SiEBE18-526 Instruction • Press the TIMER ON/OFF BUTTON once again PROGRAM TIMER OPERATION to cancel programming. The display vanishes. Operate in the following order. • The timer is operated in the following two ways. • Programming the stop time ( ..
  • Page 245 Instruction SiEBE18-526 HOW TO CLEAN THE AIR FILTER 8. MAINTENANCE Clean the air filter when the display shows “ ” (FOR SERVICE PERSONNEL) (TIME TO CLEAN AIR FILTER). It will display that it will operate for a set amount of ONLY A QUALIFIED SERVICE PERSON IS time.
  • Page 246 SiEBE18-526 Instruction HOW TO CLEAN AIR OUTLET AND OUT- Turn on the main power supply switch SIDE PANELS • The display on the remote control will be shown when the power is turned on. • Clean with soft cloth. • To protect the unit, turn on the main power switch •...
  • Page 247 It is necessary to clean This is because operating mode is controlled by a the inside of the indoor unit. Ask your Daikin micro computer, as shown below, depending on dealer for details on cleaning the unit. This the operating mode of the other connected indoor operation requires a qualified service person.
  • Page 248 • If the heat source of the room is excessive INSPECTION No. in which a (when cooling). display malfunction occurs. Cooling effect decreases if heat gain of the room is too large. MALFUNCTION CODE Measure: Notify your Daikin dealer and inform him/her of the display. 3PN05140-1T System Configuration...
  • Page 249 Instruction SiEBE18-526 System Configuration...

  • Page 250: Part 8 Troubleshooting

    SiEBE18-526 Part 8 Troubleshooting 1. Caution for Diagnosis................241 1.1 Troubleshooting with the Operation Lamp (RA Indoor Unit) ....241 1.2 Troubleshooting with the LED on the SkyAir Indoor Unit .....242 1.3 Troubleshooting with the LED on the Outdoor Unit......243 1.4 Troubleshooting with the LED on the BP Unit ........244 2.
  • Page 251 SiEBE18-526 7.2 Actuation of High Pressure Switch ............295 7.3 Actuation of Low Pressure Switch............296 7.4 Compressor Motor Lock ...............297 7.5 Malfunction of Outdoor Unit Fan Motor ..........298 7.6 Malfunction of Moving Part of Electronic Expansion Valve ....299 7.7 Abnormal Discharge Pipe Temperature ..........300 7.8 Malfunction of Thermistor for Outdoor Air (R1T) ........301 7.9 Malfunction of Discharge Pipe Thermistor (R3T) .........302 7.10 Malfunction of Thermistor (R2T) for Suction Pipe ........303...

  • Page 252: Caution For Diagnosis

    SiEBE18-526 Caution for Diagnosis 1. Caution for Diagnosis Troubleshooting with the Operation Lamp (RA Indoor Unit) The operation lamp blinks when any of the following errors is detected. 1. When a protection device of the indoor or outdoor unit is activated or when the thermistor malfunctions, disabling equipment operation.

  • Page 253: Troubleshooting With The Led On The Skyair Indoor Unit

    Caution for Diagnosis SiEBE18-526 Caution: Operation stops suddenly. (Operation lamp blinks.) Cause of above trouble could be "Operation mode butting". Check followings; Are the operation modes all the same for indoor units connected to Multi system outdoor unit? If not set all indoor units to the same operation mode and confirm that the operation lamp is not blinking.

  • Page 254: Troubleshooting With The Led On The Outdoor Unit

    SiEBE18-526 Caution for Diagnosis Troubleshooting with the LED on the Outdoor Unit There are green and orange LEDs on the PCB. The blinking green LED indicates normal equipment condition, and the OFF condition of the orange LED indicates normal equipment condition.

  • Page 255: Troubleshooting With The Led On The Bp Unit

    Caution for Diagnosis SiEBE18-526 Troubleshooting with the LED on the BP Unit LEDA(H1P) LED1(H2P) LED2(H3P) LED3(H4P) LED4(H5P) (Q0395) Green Normally flashing LED-B (green) Normally off Intercommunication to Diagnosis outdoor unit: normal Normal Flash Abnormality Check inter-unit wiring Irrelevant Abnormality Check inter-unit wiring Green Microcomputer: Malfunction detection...

  • Page 256: Service Check Function

    SiEBE18-526 Service Check Function 2. Service Check Function RA Indoor Unit Wireless Remote Controller In the ARC433A series remote controller, the temperature display sections on the main unit indicate corresponding codes. Check Method 1 1. When the timer cancel button is held down for 5 seconds, a “00” indication flashes on the temperature display section.
  • Page 257 Service Check Function SiEBE18-526 Check Method 2 1. Enter the diagnosis mode. s ,TEMP t , MODE) simultaneously. Press the 3 buttons (TEMP (R4272) The digit of the number of tens blinks. HTry again from the start when the digit does not blink. (R4273) 2.
  • Page 258 SiEBE18-526 Service Check Function 5. Press the TEMP button. s or TEMP t and change the digit until you hear the sound of “beep”. Press TEMP (R4277) 6. Diagnose by the sound. H“ pi ” : The both numbers of tens and units do not accord with the error code. H“...

  • Page 259: Skyair Indoor Unit Inspection/Test Button

    Service Check Function SiEBE18-526 SkyAir Indoor Unit INSPECTION/TEST Button Explanation The following modes can be selected by using the [Inspection/Test Operation] button on the remote control. Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Depress Inspection/Test Operation button for more than 4 seconds.

  • Page 260: Skyair Indoor Unit Wired Remote Controller

    SiEBE18-526 Service Check Function SkyAir Indoor Unit Wired Remote Controller Explanation If operation stops due to malfunction, the remote controller’s operation LED blinks, and malfunction code is displayed. (Even if stop operation is carried out, malfunction contents are displayed when the inspection mode is entered.) The malfunction code enables you to tell what kind of malfunction caused operation to stop.

  • Page 261: Skyair Indoor Unit Wireless Remote Controller

    Service Check Function SiEBE18-526 SkyAir Indoor Unit Wireless Remote Controller If equipment stops due to a malfunction, the operation indicating LED on the light reception section flashes. The malfunction code can be determined by following the procedure described below. (The malfunction code is displayed when an operation error has occurred.
  • Page 262 SiEBE18-526 Service Check Function Normal status Enters inspection mode from normal status when the INSPECITON/TEST button is pressed. 1 Press INSPECTION/TEST button. If no button is pressed for 1 minute, equipment returns to normal status. Press MODE selector button When MODE selector button is pressed or no button is pressed for 1 minute,...

  • Page 263: Sky Air Indoor Unit Error Codes And Led Indication

    Service Check Function SiEBE18-526 Sky Air Indoor Unit Error Codes and LED Indication Symbols : Blinks : On : Off — : No connection with troubleshooting : High probability of malfunction : Possibility of malfunction : Low probability of malfunction —...

  • Page 264: Malfunction Code Indication By Outdoor Unit Pcb

    SiEBE18-526 Service Check Function Malfunction Code Indication by Outdoor Unit PCB <Monitor mode> Contents of malfunction Malfunction To enter the monitor mode, push the code MODE button (BS1) when in “Setting Abnormal discharge pressure HPS activated mode 1”. Abnormal suction pressure Abnormal Pe Compressor lock Detection of INV compressor lock...
  • Page 265 Service Check Function SiEBE18-526 Malfunction Confirmation of malfunction 1 Confirmation of malfunction 2 Confirmation of malfunction 3 code LED1 LED2 LED3 LED4 LED5 LED6 LED7 LED1 LED2 LED3 LED4 LED5 LED6 LED7 LED3 LED1 LED2 LED4 LED5 LED6 LED7 : ON : ON Malfunction code 1st Malfunction code 2nd...

  • Page 266: List Of Malfunction Code

    SiEBE18-526 List of Malfunction Code 3. List of Malfunction Code 9: Blink 8: ON 7: OFF Malfunction Malfunction contents Page Referred code RA Indoor SkyAir BP Unit Outdoor Unit Indoor Unit Unit Indoor Error of external protection device — — —...
  • Page 267 List of Malfunction Code SiEBE18-526 9: Blink 8: ON 7: OFF Malfunction Malfunction contents Page Referred code RA Indoor SkyAir BP Unit Outdoor Unit Indoor Unit Unit Outdoor Malfunction of inverter radiating fin temperature rise — — — Unit Inverter compressor motor grounding, short circuit —...

  • Page 268: Troubleshooting For Ra Indoor Unit

    SiEBE18-526 Troubleshooting for RA Indoor Unit 4. Troubleshooting for RA Indoor Unit Indoor Unit PCB Abnormality Remote Controller Display Method of Evaluation of zero-cross detection of power supply by indoor unit. Malfunction Detection Malfunction When there is no zero-cross detection in approximately 10 continuous seconds. Decision Conditions Supposed...

  • Page 269: Freeze-Up Protection Control Or High Pressure Control

    Troubleshooting for RA Indoor Unit SiEBE18-526 Freeze-up Protection Control or High Pressure Control Remote Controller Display Method of High pressure control (heat pump model only) Malfunction During heating operations, the temperature detected by the indoor heat exchanger thermistor is used for the high pressure control (stop, outdoor fan stop, etc.) Detection The freeze-up protection control (operation halt) is activated during cooling operation according to the temperature detected by the indoor unit heat exchanger thermistor.
  • Page 270 SiEBE18-526 Troubleshooting for RA Indoor Unit Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.06 Check the air passage. Refer to P.266 Is there any Provide sufficient air passage. short-circuit? Check the intake air filter.

  • Page 271: Fan Motor Or Related Abnormality

    Troubleshooting for RA Indoor Unit SiEBE18-526 Fan Motor or Related Abnormality 4.3.1 AC Motor (Wall 20~35 C series, Duct, Floor / Ceiling) Remote Controller Display Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine Malfunction abnormal fan motor operation.
  • Page 272 SiEBE18-526 Troubleshooting for RA Indoor Unit 4.3.2 DC Motor (Wall 20~35 D series and 50~71 class, Floor) Remote Controller Display Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine Malfunction abnormal fan motor operation. Detection Malfunction When the detected rotation speed is less than 50% of the H tap under maximum fan motor...
  • Page 273 Troubleshooting for RA Indoor Unit SiEBE18-526 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.01 Turn off power supply Refer to P.265 and rotate fan by hand. Check No.02 Does fan rotate Replace fan motor.

  • Page 274: Thermistor Or Related Abnormality (Indoor Unit)

    SiEBE18-526 Troubleshooting for RA Indoor Unit Thermistor or Related Abnormality (Indoor Unit) C4, C9 Remote Controller Display Method of The temperatures detected by the thermistors are used to determine thermistor errors. Malfunction Detection Malfunction When the thermistor input is more than 4.96 V or less than 0.04 V during compressor operation∗.

  • Page 275: Shutter Drive Motor / Shutter Limit Switch Abnormality

    Troubleshooting for RA Indoor Unit SiEBE18-526 Shutter Drive Motor / Shutter Limit Switch Abnormality Remote Controller Display Method of The shutter open / close performance is detected by the limit switch attached on its structure. In this way, the shutter drive motor and the shutter limit switch are checked for failure. Malfunction Detection Malfunction...

  • Page 276: Check

    SiEBE18-526 Troubleshooting for RA Indoor Unit Check 4.6.1 Fan Motor Connector Output Check Check No.01 1. Check connector connection. 2. Check motor power supply voltage output (pins 4-7 and 4-8). 3. Check motor control voltage (pins 4-3). 4. Check rotation command voltage output (pins 4-2). 5.

  • Page 277: Thermistor Resistance Check

    Troubleshooting for RA Indoor Unit SiEBE18-526 4.6.3 Thermistor Resistance Check Check No.06 Remove the connectors of the thermistors on the PCB, and measure the resistance of each thermistor using tester. The relationship between normal temperature and resistance is shown in the graph and the table below.

  • Page 278: Power Supply Waveforms Check

    SiEBE18-526 Troubleshooting for RA Indoor Unit 4.6.4 Power Supply Waveforms Check Check No.10 Measure the power supply waveform between pins 1 and 3 on the terminal board, and check the waveform disturbance. Check to see if the power supply waveform is a sine wave (Fig.1). Check to see if there is waveform disturbance near the zero cross (sections circled in Fig.2) [Fig.1] [Fig.2]...

  • Page 279: Troubleshooting For Skyair Indoor Unit

    Troubleshooting for SkyAir Indoor Unit SiEBE18-526 5. Troubleshooting for SkyAir Indoor Unit Indoor Unit PCB Abnormality Remote Controller Display Applicable FFQ-B & FHQ-BU Models Method of Check data from E²PROM. Malfunction Detection Malfunction When data could not be correctly received from the E²PROM Decision E²PROM : Type of nonvolatile memory.

  • Page 280: Malfunction Of Drain Water Level System (Float Type)

    SiEBE18-526 Troubleshooting for SkyAir Indoor Unit Malfunction of Drain Water Level System (Float Type) Remote Controller Display Applicable FFQ-B & FHQ-BU Models Method of By float switch OFF detection Malfunction Detection Malfunction When rise of water level is not a condition and the float switch goes OFF. Decision Conditions Supposed...
  • Page 281 Troubleshooting for SkyAir Indoor Unit SiEBE18-526 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. If “A3” is detected by a PC board which is not mounted with X15A, the PC board is defective.

  • Page 282: Malfunction Of Drain System

    SiEBE18-526 Troubleshooting for SkyAir Indoor Unit Malfunction of Drain System Remote Controller Display Applicable FHQ-BU Models Method of Water leakage is detected based on float switch ON/OFF operation while the compressor is in Malfunction non-operation. Detection Malfunction When the float switch changes from ON to OFF while the compressor is in non-operation. Decision Conditions Supposed...

  • Page 283: Indoor Unit Fan Motor Lock

    Troubleshooting for SkyAir Indoor Unit SiEBE18-526 Indoor Unit Fan Motor Lock Remote Controller Display Applicable FHQ-BU Models Method of Detection by failure of signal for detecting number of turns to come from the fan motor Malfunction Detection Malfunction When number of turns can’t be detected even when output voltage to the fan is maximum Decision Conditions Supposed...

  • Page 284: Malfunction Of Indoor Unit Fan Motor

    SiEBE18-526 Troubleshooting for SkyAir Indoor Unit Malfunction of Indoor Unit Fan Motor Remote Controller Display Applicable FFQ-B Models Method of Detection of abnormal fan speed by signal from the fan motor Malfunction Detection Malfunction When fan speed does not increase Decision Conditions Supposed...
  • Page 285 Troubleshooting for SkyAir Indoor Unit SiEBE18-526 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.01 Turn off the power supply. Refer to P.285 Is there any foreign matter Remove the foreign matter.

  • Page 286: Swing Flap Motor Malfunction / Lock

    SiEBE18-526 Troubleshooting for SkyAir Indoor Unit Swing Flap Motor Malfunction / Lock Remote Controller Display Applicable FHQ-BU Models Method of Utilizes ON/OFF of the limit switch when the motor turns. Malfunction Detection Malfunction When ON/OFF of the microswitch for positioning cannot be reversed even though the swing flap Decision motor is energized for a specified amount of time (about 30 seconds).
  • Page 287 Troubleshooting for SkyAir Indoor Unit SiEBE18-526 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. the connectors correctly connected Connect correctly. to X29A and X14A on the PC board? the limit switch's transfer Connect correctly.

  • Page 288: Malfunction Of Capacity Setting

    SiEBE18-526 Troubleshooting for SkyAir Indoor Unit Malfunction of Capacity Setting Remote Controller Display Applicable FFQ-B, FHQ-BU Models Method of Capacity is determined according to resistance of the capacity setting adaptor and the memory inside the IC memory on the indoor unit PCB, and whether the value is normal or abnormal is Malfunction determined.

  • Page 289: Malfunction Of Heat Exchanger Thermistor (R2T)

    Troubleshooting for SkyAir Indoor Unit SiEBE18-526 Malfunction of Heat Exchanger Thermistor (R2T) Remote Controller Display Applicable FFQ-B, FHQ-BU Models Method of Malfunction detection is carried out by temperature detected by heat exchanger sensor. Malfunction Detection Malfunction When the heat exchanger thermistor becomes disconnected or shorted while the unit is running. Decision Conditions Supposed...

  • Page 290: Malfunction Of Heat Exchanger Thermistor (R3T)

    SiEBE18-526 Troubleshooting for SkyAir Indoor Unit Malfunction of Heat Exchanger Thermistor (R3T) Remote Controller Display Applicable FFQ-B, FHQ-BU Models Method of Malfunction detection is carried out by temperature detected by heat exchanger sensor (R3T). Malfunction Detection Malfunction When the heat exchanger thermistor becomes disconnected or shorted while the unit is running. Decision Conditions Supposed...

  • Page 291: Malfunction Of Suction Air Thermistor

    Troubleshooting for SkyAir Indoor Unit SiEBE18-526 5.10 Malfunction of Suction Air Thermistor Remote Controller Display Applicable FFQ-B, FHQ-BU Models Method of Malfunction detection is carried out by temperature detected by suction air temperature sensor. Malfunction Detection Malfunction When the suction air temperature sensor’s thermistor becomes disconnected or shorted while Decision the unit is running.

  • Page 292: Malfunction Of Remote Controller Thermistor

    SiEBE18-526 Troubleshooting for SkyAir Indoor Unit 5.11 Malfunction of Remote Controller Thermistor Remote Controller Display Applicable FFQ-B, FHQ-BU Models Method of Even if remote controller thermistor is faulty, system is possible to operate by system thermistor. Malfunction detection is carried out by temperature detected by remote controller thermistor. Malfunction Detection Malfunction...

  • Page 293: Transmission Error (Between Indoor Unit And Remote Controller)

    Troubleshooting for SkyAir Indoor Unit SiEBE18-526 5.12 Transmission Error (between Indoor Unit and Remote Controller) Remote Controller Display Applicable FFQ-B, FHQ-BU Models Method of Microcomputer checks if transmission between indoor unit and remote controller is normal. Malfunction Detection Malfunction When transmission is not carried out normally for a certain amount of time Decision Conditions Supposed...

  • Page 294: Transmission Error (Between Main And Sub Remote Controller)

    SiEBE18-526 Troubleshooting for SkyAir Indoor Unit 5.13 Transmission Error (between Main and Sub Remote Controller) Remote Controller Display Applicable FFQ-B, FHQ-BU Models Method of In case of controlling with 2- remote controller, check the system using microcomputer if signal transmission between indoor unit and remote controller (main and sub) is normal. Malfunction Detection Malfunction...

  • Page 295: Malfunction Of Field Setting Switch

    Troubleshooting for SkyAir Indoor Unit SiEBE18-526 5.14 Malfunction of Field Setting Switch Remote Controller Display Applicable FFQ-B, FHQ-BU Models Method of Malfunction Detection Malfunction Incorrect field setting Decision Conditions Supposed Indoor-Outdoor (BP) transmission line Causes Faulty remote controller wiring Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 296: Check

    SiEBE18-526 Troubleshooting for SkyAir Indoor Unit 5.15 Check Check No. 01 Check for Fan Motor Connector (Power Supply Line) (1) Turn the power supply off. With the relay connector disconnected, measure the resistance between UVW phases of the connector (3 cores) at the motor side, then make sure that the resistance between each phase is balanced and not short-circuited.
  • Page 297 Troubleshooting for SkyAir Indoor Unit SiEBE18-526 Check No. 02 Check for Thermistors Disconnect the thermistor connector from PCB, then measure the resistance by using a tester. Unit : kΩ Thermistor temperature and resistance characteristics Temperature °C -6.0 90.8 88.0 -4.0 81.7 79.1 -2.0...

  • Page 298: Troubleshooting For Bp Unit

    SiEBE18-526 Troubleshooting for BP Unit 6. Troubleshooting for BP Unit Malfunction of Electronic Expansion Valve Remote Controller Display Method of Detection by checking continuity and lack of connector. Malfunction Detection Malfunction Malfunction is determined by no common voltage applied when turning the power supply on. Decision Conditions Supposed...

  • Page 299: Faulty Bp Unit Pcb

    Troubleshooting for BP Unit SiEBE18-526 Faulty BP Unit PCB Remote Controller Display Method of Check data from E²PROM Malfunction Detection Malfunction When data could not be correctly received from the E²PROM E²PROM : Type of nonvolatile memory. Maintains memory contents even when the power Decision supply is turned off.

  • Page 300: Faulty Bp Liquid Or Gas Pipe Thermistor

    SiEBE18-526 Troubleshooting for BP Unit Faulty BP Liquid or Gas Pipe Thermistor Remote Controller Display Method of Malfunction Detection Malfunction When the BP liquid or gas pipe temperature sensor became short-circuited or open. Decision Conditions Supposed Faulty BP liquid or gas pipe temperature sensor Causes Faulty connectors connection of BP liquid or gas pipe temperature sensor Troubleshooting...

  • Page 301: Transmission Error Between Indoor Unit And Bp Unit

    Troubleshooting for BP Unit SiEBE18-526 Transmission Error between Indoor Unit and BP Unit Outdoor Unit Indication Method of The data received from the BP unit in indoor unit-BP unit signal transmission is checked Malfunction whether it is normal. Detection Malfunction When the data sent from the BP unit cannot be received normally, or when the content of the data is abnormal.
  • Page 302 SiEBE18-526 Troubleshooting for BP Unit Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.14 Push and hold the RESET button on the outdoor unit PCB for 5 seconds Refer to P.293 Does the malfunction Normal...

  • Page 303: Transmission Error Between Outdoor Unit And Bp Unit

    Troubleshooting for BP Unit SiEBE18-526 Transmission Error between Outdoor Unit and BP Unit Outdoor Unit Indication Method of Transmission error is detected when the outdoor unit could not received the data from BP unit Malfunction correctly. Detection Malfunction When the data from BP unit could not be correctly received continuously for 10 minutes Decision Conditions Supposed...

  • Page 304: Check

    SiEBE18-526 Troubleshooting for BP Unit Check 6.6.1 Power Supply Waveforms Check Check No.14 Measure the power supply waveform between pins 1 and 3 on the terminal board, and check the waveform disturbance. Check to see if the power supply waveform is a sine wave (Fig.1). Check to see if there is waveform disturbance near the zero cross (sections circled in Fig.2) [Fig.1] [Fig.2]...

  • Page 305: Troubleshooting For Outdoor Unit

    Troubleshooting for Outdoor Unit SiEBE18-526 7. Troubleshooting for Outdoor Unit Faulty Outdoor Unit PCB Remote Controller Display Applicable AII outdoor unit models Models Method of Check data from E²PROM Malfunction Detection Malfunction When data could not be correctly received from the E²PROM Decision E²PROM : Type of nonvolatile memory.

  • Page 306: Actuation Of High Pressure Switch

    SiEBE18-526 Troubleshooting for Outdoor Unit Actuation of High Pressure Switch Remote Controller Display Applicable AII outdoor unit models Models Method of Abnormality is detected when the contact of the high pressure protection switch opens. Malfunction Detection Malfunction Error is generated when the HPS activation count reaches the number specific to the operation Decision mode.

  • Page 307: Actuation Of Low Pressure Switch

    Troubleshooting for Outdoor Unit SiEBE18-526 Actuation of Low Pressure Switch Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction Detection Malfunction Error is generated when the low pressure is dropped under specific pressure. Decision Conditions Supposed Abnormal drop of low pressure Defect of low pressure sensor Causes Defect of outdoor unit PCB...

  • Page 308: Compressor Motor Lock

    SiEBE18-526 Troubleshooting for Outdoor Unit Compressor Motor Lock Remote Controller Display Applicable AII outdoor unit models Models Method of Inverter PC board takes the position signal from UVWN line connected between the inverter and compressor, and detects the position signal pattern. Malfunction Detection Malfunction...

  • Page 309: Malfunction Of Outdoor Unit Fan Motor

    Troubleshooting for Outdoor Unit SiEBE18-526 Malfunction of Outdoor Unit Fan Motor Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction of fan motor system is detected according to the fan speed detected by Hall IC when the fan motor runs. Malfunction Detection Malfunction...

  • Page 310: Malfunction Of Moving Part Of Electronic Expansion Valve

    SiEBE18-526 Troubleshooting for Outdoor Unit Malfunction of Moving Part of Electronic Expansion Valve Remote Controller Display Applicable AII outdoor unit models Models Method of Check disconnection of connector Check continuity of expansion valve coil Malfunction Detection Malfunction Error is generated under no common power supply when the power is on. Decision Conditions Supposed...

  • Page 311: Abnormal Discharge Pipe Temperature

    Troubleshooting for Outdoor Unit SiEBE18-526 Abnormal Discharge Pipe Temperature Remote Controller Display Applicable AII outdoor unit models Models Method of Abnormality is detected according to the temperature detected by the discharge pipe temperature sensor. Malfunction Detection Malfunction When the discharge pipe temperature rises to an abnormally high level Decision When the discharge pipe temperature rises suddenly Conditions...

  • Page 312: Malfunction Of Thermistor For Outdoor Air (R1T)

    SiEBE18-526 Troubleshooting for Outdoor Unit Malfunction of Thermistor for Outdoor Air (R1T) Remote Controller Display Applicable AII outdoor unit models Models Method of The abnormal detection is based on current detected by current sensor. Malfunction Detection Malfunction When the outdoor air temperature sensor has short circuit or open circuit. Decision Conditions Supposed...

  • Page 313: Malfunction Of Discharge Pipe Thermistor (R3T)

    Troubleshooting for Outdoor Unit SiEBE18-526 Malfunction of Discharge Pipe Thermistor (R3T) Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected from the temperature detected by discharge pipe temperature thermistor. Malfunction Detection Malfunction When a short circuit or an open circuit in the discharge pipe temperature thermistor is detected. Decision Conditions Supposed...

  • Page 314: Malfunction Of Thermistor (R2T) For Suction Pipe

    SiEBE18-526 Troubleshooting for Outdoor Unit 7.10 Malfunction of Thermistor (R2T) for Suction Pipe Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected from the temperature detected by the suction pipe temperature thermistor. Malfunction Detection Malfunction When a short circuit or an open circuit in the suction pipe temperature thermistor is detected.

  • Page 315: Malfunction Of Thermistor (R4T) For Outdoor Unit Heat Exchanger

    Troubleshooting for Outdoor Unit SiEBE18-526 7.11 Malfunction of Thermistor (R4T) for Outdoor Unit Heat Exchanger Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected from the temperature detected by the heat exchanger thermistor. Malfunction Detection Malfunction When a short circuit or an open circuit in the heat exchange thermistor is detected.

  • Page 316: Malfunction Of Receiver Gas Pipe Thermistor (R5T)

    SiEBE18-526 Troubleshooting for Outdoor Unit 7.12 Malfunction of Receiver Gas Pipe Thermistor (R5T) Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected according to the temperature detected by receiver gas pipe thermistor (= Subcooling heat exchanger gas pipe thermistor). Malfunction Detection Malfunction...

  • Page 317: Outdoor Unit: Malfunction Of High Pressure Sensor

    Troubleshooting for Outdoor Unit SiEBE18-526 7.13 Outdoor Unit: Malfunction of High Pressure Sensor Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected from the pressure detected by the high pressure sensor. Malfunction Detection Malfunction When the high pressure sensor is short circuit or open circuit. Decision Conditions Supposed...

  • Page 318: Malfunction Of Low Pressure Sensor

    SiEBE18-526 Troubleshooting for Outdoor Unit 7.14 Malfunction of Low Pressure Sensor Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected from pressure detected by low pressure sensor. Malfunction Detection Malfunction When the low pressure sensor is short circuit or open circuit. Decision Conditions Supposed...

  • Page 319: Malfunction Of Inverter Radiating Fin Temperature Rise

    Troubleshooting for Outdoor Unit SiEBE18-526 7.15 Malfunction of Inverter Radiating Fin Temperature Rise Remote Controller Display Applicable AII outdoor unit models Models Method of Fin temperature is detected by the thermistor of the radiation fin. Malfunction Detection Malfunction When the temperature of the inverter radiation fin increases above 99°C. Decision Conditions Supposed...

  • Page 320: Inverter Compressor Abnormal

    SiEBE18-526 Troubleshooting for Outdoor Unit 7.16 Inverter Compressor Abnormal Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected from current flowing in the power transistor. Malfunction Detection Malfunction When an excessive current flows in the power transistor. Decision (Instantaneous overcurrent also causes activation.) Conditions...

  • Page 321: Inverter Current Abnormal

    Troubleshooting for Outdoor Unit SiEBE18-526 7.17 Inverter Current Abnormal Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected by current flowing in the power transistor. Malfunction Detection Malfunction When overload in the compressor is detected. Decision Conditions Supposed...

  • Page 322: Inverter Start Up Error

    SiEBE18-526 Troubleshooting for Outdoor Unit 7.18 Inverter Start up Error Remote Controller Display Applicable AII outdoor unit models Models Method of Malfunction is detected from current flowing in the power transistor. Malfunction Detection Malfunction When overload in the compressor is detected during startup Decision Conditions Supposed...

  • Page 323: Malfunction Of Transmission Between Inverter And Control Pcb

    Troubleshooting for Outdoor Unit SiEBE18-526 7.19 Malfunction of Transmission between Inverter and Control PCB Remote Controller Display Applicable AII outdoor unit models Models Method of Check the communication state between inverter PCB and control PCB by micro-computer. Malfunction Detection Malfunction When the correct communication is not conducted in certain period.
  • Page 324 SiEBE18-526 Troubleshooting for Outdoor Unit Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Are the connectors between the main PC board (A1P) and Connect transmission wiring and inverter PCB turn on again.

  • Page 325: Malfunction Of Inverter Radiating Fin Temperature Rise Sensor

    Troubleshooting for Outdoor Unit SiEBE18-526 7.20 Malfunction of Inverter Radiating Fin Temperature Rise Sensor Remote Controller Display Applicable AII outdoor unit models Models Method of Resistance of radiation fin thermistor is detected when the compressor is not operating. Malfunction Detection Malfunction When the resistance value of thermistor becomes a value equivalent to open or short circuited Decision...

  • Page 326: Faulty Combination Of Inverter And Fan Driver

    SiEBE18-526 Troubleshooting for Outdoor Unit 7.21 Faulty Combination of Inverter and Fan Driver Remote Controller Display Applicable AII outdoor unit models Models Method of Check the communication state between inverter PCB and control PCB by micro-computer. Malfunction Detection Malfunction When the communication data about inverter PCB type is incorrect. Decision Conditions Supposed...

  • Page 327: Low Pressure Drop Due To Refrigerant Shortage Or Electronic Expansion Valve Failure

    Troubleshooting for Outdoor Unit SiEBE18-526 7.22 Low Pressure Drop Due to Refrigerant Shortage or Electronic Expansion Valve Failure Remote Controller Display Applicable AII outdoor unit models Models Method of Short of gas malfunction is detected by discharge pipe temperature thermistor. Malfunction Detection Malfunction...

  • Page 328: Power Supply Insufficient Or Instantaneous Failure

    SiEBE18-526 Troubleshooting for Outdoor Unit 7.23 Power Supply Insufficient or Instantaneous Failure Remote Controller Display Applicable AII outdoor unit models Models Method of Detection of voltage of main circuit capacitor built in the inverter and power supply voltage. Malfunction Detection Malfunction Decision Conditions...
  • Page 329 Troubleshooting for Outdoor Unit SiEBE18-526 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. connection wire connected Repair wiring. between the connector X205A and X25A? Turn on again. Does the voltage between terminals P Replace the inverter PCB.

  • Page 330: Check Operation Not Executed

    SiEBE18-526 Troubleshooting for Outdoor Unit 7.24 Check Operation not Executed Remote Controller Display Applicable AII outdoor unit models Models Method of Check operation is executed or not Malfunction Detection Malfunction Malfunction is decided when the unit starts operation without check operation. Decision Conditions Supposed...

  • Page 331: Malfunction In Other Indoor Unit Or Other Bp Unit

    Troubleshooting for Outdoor Unit SiEBE18-526 7.25 Malfunction in other Indoor Unit or other BP Unit Remote Controller Display Applicable AII indoor unit models Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Malfunction of electronic expansion valve in other BP unit Defect of PCB of other indoor unit or other BP unit Causes Troubleshooting...

  • Page 332: Mismatching Of Indoor Unit, Bp Unit And Outdoor Unit

    SiEBE18-526 Troubleshooting for Outdoor Unit 7.26 Mismatching of Indoor Unit, BP Unit and Outdoor Unit Remote Controller Display Applicable AII indoor unit models Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Defect of outdoor unit PCB (A1P) Mismatching of the refrigerant type of indoor and outdoor unit. Causes Setting of outdoor PCB was not conducted after replacing to spare parts PCB.

  • Page 333: Refrigerant System Not Set, Incompatible Wiring/Piping

    Troubleshooting for Outdoor Unit SiEBE18-526 7.27 Refrigerant System not Set, Incompatible Wiring/Piping Remote Controller Display Applicable AII BP unit models Models AII outdoor unit models Method of Malfunction Detection Malfunction Decision Conditions Supposed Failure to execute wiring check operation Defect of BP unit PCB Causes Failure to open the stop valve Troubleshooting...

  • Page 334: Malfunction Of System, Refrigerant System Address Undefined

    SiEBE18-526 Troubleshooting for Outdoor Unit 7.28 Malfunction of System, Refrigerant System Address Undefined Remote Controller Display Applicable AII indoor unit models Models All BP unit models AII outdoor unit models Method of Malfunction Detection Malfunction Decision Conditions Supposed Defect of indoor unit PCB Defect of BP unit PCB Causes Defect of outdoor unit PCB (A1P)

  • Page 335: Check

    Check SiEBE18-526 8. Check Check No. 08 Check on connector of fan motor (Power supply cable) (1) Turn off the power supply. Measure the resistance between phases of U,V,W at the motor side connectors (three-core wire) to check that the values are balanced and there is no short circuit, while connector or relay connector is disconnected.
  • Page 336 SiEBE18-526 Check Check No. 11 Check for Fan Speed Pulse Input on Outdoor Unit PC Board (1) Disconnect the connector X206A with the power supply OFF and Operation OFF. (2) Is the voltage between pins 4 and 3 of X206A about 15 VDC after turning the power supply (3) Is the voltage between pins 4 and 1 of X206A about 5 VDC? (4) Connect the connector X206A with the power supply OFF and Operation OFF.

  • Page 337: Thermistor Resistance / Temperature Characteristics

    Thermistor Resistance / Temperature Characteristics SiEBE18-526 9. Thermistor Resistance / Temperature Characteristics Indoor unit For air suction For liquid pipe For gas pipe Outdoor unit For outdoor air For coil For suction pipe For Receiver gas pipe (kΩ) T°C T°C 197.81 192.08 16.10...
  • Page 338 SiEBE18-526 Thermistor Resistance / Temperature Characteristics Outdoor Unit Thermistors for Discharge Pipe (R3T) (kΩ)) T°C T°C T°C 640.44 624.65 72.32 70.96 13.35 13.15 609.31 594.43 69.64 68.34 12.95 12.76 579.96 565.78 67.06 65.82 12.57 12.38 552.00 538.63 64.60 63.41 12.20 12.01 525.63 512.97...

  • Page 339: Pressure Sensor

    Pressure Sensor SiEBE18-526 10.Pressure Sensor = 1.38V-0.69 : Detected Pressure [High Side] MPa = 0.57V-0.28 : Detected Pressure [Low Side] MPa : High pressure (MPa) : Output Voltage [High Side] V Detected Pressure : Low pressure (MPa) : Output Voltage [Low Side] V V : Voltage (V) (kg/cm³) 51.0...

  • Page 340: Part 9 Removal Procedure

    SiEBE18-526 Part 9 Removal Procedure 1. Outdoor Unit..................330 1.1 Removal of Outer Panels ..............330 1.2 Removal of PCB...................337 1.3 Removal of Solenoid Valve, Four Way Valve and Motorized Valve..348 1.4 Removal of Thermistor Assembly ............349 1.5 Removal of Fan Motor................350 2.

  • Page 341: Outdoor Unit

    Outdoor Unit SiEBE18-526 1. Outdoor Unit Removal of Outer Panels Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Appearance. Top panel Front panel Pipe outlet port (Q0446) Rear protective net Outdoor air...
  • Page 342 SiEBE18-526 Outdoor Unit Step Procedure Points 2. Removing the rear protective net Hooks Undo the three top Bend the rear protective net hooks first. slightly for easy removal. (Q0448) Next, undo the four right-side hooks. (See the figure at bottom.) (Q0449) Remove the rear protective net.
  • Page 343 Outdoor Unit SiEBE18-526 Step Procedure Points 3. Removing the top panel Remove the eight screws. (Q0451) Lift and remove the top panel. (Q0452) Removal Procedure...
  • Page 344 SiEBE18-526 Outdoor Unit Step Procedure Points 4. Removing the front panel Remove the screw. Pull the front panel toward yourself. Screw (Q0453) There are six hooks on the front panel. Slide the front panel downward to remove it. (Q0454) Removal Procedure...
  • Page 345 Outdoor Unit SiEBE18-526 Step Procedure Points 5. Removing the pipe cover Remove the screw. Pull the pipe cover toward yourself. Screw (Q0455) There are three hooks on the pipe cover. Slide the pipe cover upward to remove it. (Q0456) Removal Procedure...
  • Page 346 SiEBE18-526 Outdoor Unit Step Procedure Points 6. Right side panel Remove the six screws off the panel's front. Screws (Q0457) Remove the three screws off the panel's back and the two screws off the panel's side. Screws Screws (Q0458) Remove the right side panel.
  • Page 347 Outdoor Unit SiEBE18-526 Step Procedure Points 7. Removing the outdoor air thermistor Disconnect the outdoor air thermistor holder. Unhook the holder from inside of the right side panel for easy removal. (Q0461) The figure shows the state after disconnection. Outdoor air thermistor holder (Q0460) Removal Procedure...

  • Page 348: Removal Of Pcb

    SiEBE18-526 Outdoor Unit Removal of PCB Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Removing the control Detach the two top locking guard spacers. Remove the drip proof Locking guard spacers.
  • Page 349 Outdoor Unit SiEBE18-526 Step Procedure Points Disconnect the X2A Solenoid valve (Hot gas) connectors one by one. X3A Solenoid valve (Receiver gas purge) X25A X34A X37A X44A X45A X5A Solenoid valve (4 way valve) X46A X6A Crankcase heater X22A Transformer X28A X23A Transformer X25A Connector for [X250A]...
  • Page 350 SiEBE18-526 Outdoor Unit Step Procedure Points Open the mounting plate's right side toward yourself. Remove the two TYRAP fixtures from behind the mounting plate. TYRAP fixtures (Q0468) Disconnect the Ground, Power terminals NA Ground connectors from the (white) / LA (red) / X1A (black) power filter PCB and The TYRAP fixture is to be kept cut off the TYRAP...
  • Page 351 Outdoor Unit SiEBE18-526 Step Procedure Points 3. Removing the power filter Cut off the two top TYRAP fixtures and TYRAP fixtures remove the drip proof cover. Power filter PCB Drip proof cover (Q0472) Cut off with nippers. The TYRAP fixture is to be kept in stock.
  • Page 352 SiEBE18-526 Outdoor Unit Step Procedure Points Release the compressor lead out of the groove. (Q0474) Remove the two Cut off with nippers. TYRAP fixtures. (Q0475) Removal Procedure...
  • Page 353 Outdoor Unit SiEBE18-526 Step Procedure Points Remove the screws of the reactor leads. Screws (Q0476) Remove the screw. Screw (Q0477) The power filter PCB is provided with two hooks. Slide the PCB to the right to unhook it. <Rear view> Hooks (Q0478) Removal Procedure...
  • Page 354 SiEBE18-526 Outdoor Unit Step Procedure Points 4. Removing the electrical assembly Remove the TYRAP Cut off with nippers. fixture. The TYRAP fixture is to be kept in stock. (Q0479) Lift the electrical assembly to unhook it. Hooks Electrical assembly Partition plate Hook holes (Q0480) Removal Procedure...
  • Page 355 Outdoor Unit SiEBE18-526 Step Procedure Points (Q0481) Disconnect the fan pcs.: Red and white motor relay connector. (Q0482) Removal Procedure...
  • Page 356 SiEBE18-526 Outdoor Unit Step Procedure Points Disconnect the HPS HPS connector: Red connector and the Electrical box connector: White electrical box connector from each other. Remove the TYRAP Cut off with nippers. fixture and unbind the The TYRAP fixture is to be kept leads.
  • Page 357 Outdoor Unit SiEBE18-526 Step Procedure Points Disconnect the fan Connector X206A: Red motor electrical box Connector X207A: White relay connector. (Q0486) 5. Removing the inverter Separate the power There are two hooks. Slide the filter PCB mounting plate to unhook it. Hooks plate from the electrical assembly.
  • Page 358 SiEBE18-526 Outdoor Unit Step Procedure Points Remove the screw and detach the inverter PCB. (Q0489) There are two hooks at the far side (condenser side). When reassembling, catch these hooks first. Hooks (Q0490) Removal Procedure...

  • Page 359: Removal Of Solenoid Valve, Four Way Valve And Motorized Valve

    Outdoor Unit SiEBE18-526 Removal of Solenoid Valve, Four Way Valve and Motorized Valve Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points Step 1. Removing the solenoid valve coil, motorized valve coil and four way valve coil Remove the solenoid...

  • Page 360: Removal Of Thermistor Assembly

    SiEBE18-526 Outdoor Unit Removal of Thermistor Assembly Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Removing the thermistors Remove the under cool thermistor. Remove the suction pipe thermistor.

  • Page 361: Removal Of Fan Motor

    Outdoor Unit SiEBE18-526 Removal of Fan Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Removing the front cover Remove the seven screws. (Q0495) Slide up the front cover to unhook and detach it.
  • Page 362 SiEBE18-526 Outdoor Unit Step Procedure Points 2. Removing the propeller Remove the nut and detach the propeller fan. (Q0497) Disconnect the fan motor lead's relay connector. Relay connector (Q0498) Removal Procedure...
  • Page 363 Outdoor Unit SiEBE18-526 Step Procedure Points Open the fan motor When reassembling, make sure lead fixture. the lead wires are fastened by the fixtures. (Q0499) Remove the four Remove the two bottom screws screws and take out the first. If the top two screws are fan motor.

  • Page 364: Bp Unit

    SiEBE18-526 BP Unit 2. BP Unit Removal of PCB Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Removing the PCB. Remove the four screws from the electrical box cover.
  • Page 365 BP Unit SiEBE18-526 Step Procedure Points Disconnect the solenoid valve connector and the thermistor connector. (Q0504) Remove the screw off the wire harness band. (Q0505) Remove the screw off the grounding lug. (Q0506) Removal Procedure...
  • Page 366 SiEBE18-526 BP Unit Step Procedure Points Disconnect the Faston terminal of the grounding cable. (Q0507) Remove the two screws and take out the PCB. (Q0508) Removal Procedure...

  • Page 367: Removal Of Solenoid Valve Coil

    BP Unit SiEBE18-526 Removal of Solenoid Valve Coil Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Removing the PCB. Preparations Take the steps for removing the Remove the legged PCB.
  • Page 368 SiEBE18-526 BP Unit Step Procedure Points Remove the sealing The sealing compound (1) is a Sealing compound (1) compound (1) of the servicing part. pipe insulation sleeves. (Q0512) (Q0513) Remove the putty. (Q0514) Cut off the TYRAP The TYRAP fixture is to be kept in TYRAP fixture stock.
  • Page 369 BP Unit SiEBE18-526 Step Procedure Points The TYRAP fixture is to be kept in stock. TYRAP fixtures (Q0516) Removal Procedure...

  • Page 370: Part 10 Appendix

    SiEBE18-526 Part 10 Appendix 1. Piping Diagrams..................360 1.1 Outdoor Units ..................360 1.2 BP Units ....................361 1.3 Indoor Units ..................362 2. Wiring Diagrams..................367 2.1 Outdoor Units ..................367 2.2 BP Units ....................368 2.3 Indoor Units ..................369 Appendix...

  • Page 371: Piping Diagrams

    Piping Diagrams SiEBE18-526 1. Piping Diagrams Outdoor Units RMXS112/140/160D7V3B Four way valve Service port High pressure Pressure sensor Heat exchanger regulating valve Filter Filter High pressure switch Capillary Solenoid tube valve Compressor Low pressure sensor Check Check valve valve Filter Filter Electronic expansion valve...

  • Page 372: Bp Units

    SiEBE18-526 Piping Diagrams BP Units BPMKS967A2B, BPMKS967B2B INDOOR UNIT GAS SIDE ROOM A REFRIGERANT FLOW THERMISTOR ( DGA ) ( 15.9CuT ) HEATING COOLING GAS SIDE ROOM B THERMISTOR ( DGB ) ( 15.9CuT ) ELECTRONIC EXPANSION VALVE ( BYPASS ) ELECTRONIC INDOOR UNIT FILTER...

  • Page 373: Indoor Units

    Piping Diagrams SiEBE18-526 Indoor Units 1.3.1 Wall Mounted Type FTXS20/25/35D(2)VMW(L)(9) CTXS50D(2)VMW(L) FTXS20/25/35DA(3)VMW(L)(7) INDOOR UNIT INDOOR UNIT MAFFLER ASSY MAFFLER ASSY HEAT EXCHANGER HEAT EXCHANGER 7.0CuT 7.0CuT 6.4CuT 6.4CuT THERMISTOR THERMISTOR 6.4CuT 6.4CuT ON HEAT EXCH. ON HEAT EXCH. 6.4CuT 6.4CuT CROSS FLOW FAN CROSS FLOW FAN FIELD PIPING...
  • Page 374 SiEBE18-526 Piping Diagrams FTXS71BVMB INDOOR UNIT ( 7.9CuT ) HEAT EXCHANGER THERMISTOR ON HEAT EXCH. CROSS FLOW FAN FIELD PIPING ( 6.4CuT ) FAN MOTOR FIELD PIPING ( 15.9CuT ) ( 12.7CuT ) REFRIGERANT FLOW COOLING HEATING 4D040082H 1.3.2 Duct Connected Type FDXS25/35CVMB, FDXS25/35CAVMB, CDXS50/60CVMB INDOOR UNIT ( 6.4CuT )
  • Page 375 Piping Diagrams SiEBE18-526 1.3.3 Floor / Ceiling Suspended Dual Type FLXS25/35BVMB, FLXS25/35BAVMB FLXS50/60BVMB, FLXS50/60BAVMB INDOOR UNIT INDOOR UNIT ( 9.5CuT ) ( 6.4CuT ) HEAT EXCHANGER HEAT EXCHANGER THERMISTOR THERMISTOR ON HEAT FIELD PIPING ON HEAT FIELD PIPING EXCH. ( 6.4CuT ) EXCH.
  • Page 376 SiEBE18-526 Piping Diagrams 1.3.4 Floor Standing Type FVXS25/35BVMB, FVXS25/35BAVMB INDOOR UNIT HEAT EXCHANGER THERMISTOR CROSS FLOW FAN FAN MOTOR ON HEAT EXCH. 7.0CuT 7.0CuT CROSS FLOW FAN FAN MOTOR FIELD PIPING ( 6.4CuT ) SINGLE UNION JOINT 9.5CuT FIELD PIPING ( 9.5CuT ) SINGLE UNION JOINT REFRIGERANT FLOW...
  • Page 377 Piping Diagrams SiEBE18-526 1.3.5 Ceiling Mounted Cassette Type FFQ25/35/50/60B7V1B Indoor heat exchanger MODEL FFQ25 · 35B7V1B FFQ50 · 60B7V1B 12.7 Field piping φ C1220T-O Outdoor unit Field piping φ C1220T-O Indoor unit C : 4D039335 1.3.6 Ceiling Suspended Type FHQ35/50/60BUV1B9 Indoor heat exchanger Field piping φ...

  • Page 378: Wiring Diagrams

    SiEBE18-526 Wiring Diagrams 2. Wiring Diagrams Outdoor Units RMXS112/140/160D7V3B POWER SUPPLY 230V~50Hz GRN / YLW X22A X23A X24A t° NOTE : 4 X44A t° S1NPL X45A S1NPH E1HC X46A X26A t° t° t° t° P < X60A S1PH X34A X37A X28A C/H SELECTOR TO BP UNIT...

  • Page 379: Bp Units

    Wiring Diagrams SiEBE18-526 BP Units BPMKS967A2B, BPMKS967B2B ( DLA ) ( DGA ) ( DLB ) ( DGB ) t° t° t° t° FIELD WIRING X22A ROOM B ( BLU ) X21A LEDA ROOM A INDOOR ( RED ) LED1 ROOM A LED2 TRANSMISSION...

  • Page 380: Indoor Units

    SiEBE18-526 Wiring Diagrams Indoor Units 2.3.1 Wall Mounted Type FTXS20/25/35D(2)VMW(L)(9), FTXS20/25/35DA(3)VMW(L)(7), CTXS50D(2)VMW(L) FIELD WIRING. PCB1 PCB3 LED1 RECTIFIER 3.15A LED2 OUTDOOR CAUTION LED3 TRANSMISSION NOTE THAT OPERATION WILL CIRCUIT RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS TURNED OFF AND THEN BACK ON AGAIN.
  • Page 381 Wiring Diagrams SiEBE18-526 FTXS50BVMB FIELD WIRING. PCB3 PCB1 RECTIFIER 3.15A OUTDOOR t° CAUTION TRANSMISSION NOTE THAT OPERATION WILL CIRCUIT RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS PCB4 TURNED OFF AND THEN BACK ON AGAIN. LED1 LED2 LED3 : FRAME GROUND : FUSE H1~H3 : HARNESS...
  • Page 382 SiEBE18-526 Wiring Diagrams 2.3.2 Duct Connected Type FDXS25/35CVMB, FDXS25/35CAVMB, CDXS50/60CVMB PCB1 PCB2 V1TR 3.15A outdoor FIELD WIRING. TERMINAL FOR CAUTION CENTRALIZED CONTROL TRANSMISSION NOTE THAT OPERATION WILL CIRCUIT RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS TURNED OFF AND THEN BACK SIGNAL ON AGAIN.
  • Page 383 Wiring Diagrams SiEBE18-526 2.3.4 Floor Standing Type FVXS25/35/50BVMB, FVXS25/35/50BAVMB 3.15A PCB3 → S2W ( 4 ) outdoor / YLW TRANSMISSION PCB2 FIELD WIRING. INFRARED CIRCUIT REMOTE PCB1 CONTROL PCB4 : PROTECTIVE EARTH : FUSE S201 S202 H1P , H2P , H3P : PILOT LAMP : LIMIT SWITCH SIGNAL M1F , M2F...
  • Page 384 SiEBE18-526 Wiring Diagrams 2.3.5 Ceiling Mounted Cassette Type FFQ25/35/50/60B7V1B : CONNECTER DISCRIMINATION COLOUR FOR COMPONENTS. : CONNECTER COLOUR FOR COMPONENTS. : CONNECTER COLOUR FOR PRINTED CIRCUIT BOARD. t° IN CASE OF SIMULTANEOUS t° t° OPERATION SYSTEM INDOOR UNIT INDOOR UNIT ( MASTER ) ( SLAVE ) NOTE : 5...
  • Page 385 Wiring Diagrams SiEBE18-526 2.3.6 Ceiling Suspended Type FHQ35/50/60BUV1B9 : CONNECTER DISCRIMINATION COLOUR FOR COMPONENTS. : CONNECTER COLOUR FOR COMPONENTS. IN CASE OF SIMULTANEOUS t° : CONNECTER COLOUR FOR PRINTED CIRCUIT BOARD. OPERATION SYSTEM t° t° INDOOR UNIT INDOOR UNIT TO OUTDOOR X19A X18A X17A...
  • Page 386 SiEBE18-526 Index check on connector of fan motor (power supply cable) ........324 A1 ..............257, 268 check operation ........... 109, 127 A3 .................269 check operation not executed ......319 A5 .................258 CJ ................ 281 A6 ..........260, 261, 272, 273 compressor motor lock ........297 A7 .................275 compressor PI control ...........
  • Page 387 SiEBE18-526 E7 ..............298 FU ................. 35 E9 ..............299 FU1 ..........25, 27, 29, 31, 32 F3 ..............300 function outline ............93 H9 ..............301 functional parts layout ........... 47 J0 ..............289 functions ..............2 J3 ..............302 fuse ..........25, 27, 29, 31, 35 J5 ..............303 J6 ..............304 J9 ..............305...
  • Page 388 SiEBE18-526 malfunction of receiver gas pipe thermistor (R5T) ........... 305 L1 ................24 malfunction of remote controller thermistor ..281 L2 ................24 malfunction of suction air thermistor ....280 L4 .................308 malfunction of system, L5 .................309 refrigerant system address undefined ..323 L8 .................310 malfunction of thermistor (R2T) L9 .................311...
  • Page 389 SiEBE18-526 display PCB ......26, 30, 31, 34, 37 solenoid valve ............. 348 INTELLIGENT EYE sensor PCB ..26, 28, 30 solenoid valve coil ..........356 power supply PCB ........33, 36 specifications ............8 signal receiver PCB ....26, 28, 30, 34, 37 startup control ............
  • Page 390 SiEBE18-526 wide-angle louvers ..........80 wireless address switch (SS2) ......133 wiring diagrams ............367 X14A ..............40 X15A ..............38, 40 X17A ..............38, 40 X18A ..............38, 40 X19A ..............38, 40 X1A ..............20, 23 X1M ................20 X205A ..............22 X206A ..............22 X207A ..............22 X20A ............24, 38, 40 X21A ..............24 X23A ..............24 X24A ..............38, 40...
  • Page 391 SiEBE18-526 Drawings & Flow Charts freeze-up protection control or high pressure control ........258 abnormal discharge pipe temperature ....300 full closing of motorized valves ......77 actuation of high pressure switch ......295 function outline ............93 actuation of low pressure switch ......296 functional parts layout ...........
  • Page 392 SiEBE18-526 malfunction of moving part of electronic expansion power supply waveforms check ....267 valve ..............299 pressure sensor ..........328 malfunction of outdoor unit fan motor ....298 program dry operation function ......101 malfunction of receiver gas pipe programme dry function ........82 thermistor (R5T) ..........305 malfunction of remote controller thermistor ..281 malfunction of suction air thermistor ....280...
  • Page 393 SiEBE18-526 wiring diagrams BPMKS967A2B ..........368 BPMKS967A3B ..........368 BPMKS967B2B ..........368 BPMKS967B3B ..........368 CDXS50/60CVMB .........371 CTXS50D(2)VMW(L) ........369 FDXS25/35CAVMB ........371 FDXS25/35CVMB ..........371 FFQ25/35/50/60B7V1B .........373 FHQ35/50/60BUV1B9 ........374 FLXS25/35/50/60BAVMB ......371 FLXS25/35/50/60BVMB ........371 FTXS20/25/35CAVMB ........369 FTXS20/25/35CVMB(9)(8) ......369 FTXS20/25/35D(2)VMW(L)(9) .......369 FTXS20/25/35DA(3)VMW(L)(7) ....369 FTXS50BVMB ..........370 FTXS60/71BVMB ..........370 FVXS25/35/50BAVMB ........372 FVXS25/35/50BVMB ........372 RMXS112/140/160D7V3B ......367 viii...
  • Page 394 "The present publication is drawn up by way of Daikin Europe N.V. is approved by LRQA for its Quality Daikin units comply with the European regulations that information only and does not constitute an offer Management System in accordance with the ISO9001 guarantee the safety of the product.
  • Page 395 2 / 5 Connect BP unit DS1-3 BP Unit Not connect BP unit DS1-4 Not Used Do not change the factory setting...

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