Daikin Super Multi Plus E-Series FTXG25EV1BW Service Manual
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Daikin Super Multi Plus E-Series FTXG25EV1BW Service Manual

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Table of Contents

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Service
Manual
SiBE18-821_C
E-Series
[Applied Models]
● Super Multi Plus : Heat Pump

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Summary of Contents for Daikin Super Multi Plus E-Series FTXG25EV1BW

  • Page 1 SiBE18-821_C Service Manual E-Series [Applied Models] ● Super Multi Plus : Heat Pump...
  • Page 2 SiBE18-821_C SUPER MULTI PLUS E-Series Heat Pump Outdoor Unit RMXS112E8V1B RMXS140E8V1B RMXS160E8V1B BP Unit BPMKS967B2B BPMKS967B3B Indoor Unit FTXG25EV1BW(S) FTXS60FV1B FVXS25FV1B FFQ25B8V1B FTXG35EV1BW(S) FTXS71FV1B FVXS35FV1B FFQ35B8V1B CTXG50EV1BW(S) FTXS60GV1B FVXS50FV1B FFQ50B8V1B FTXG25JV1BW(S) FTXS71GV1B FLXS25BAVMB FFQ60B8V1B FTXG35JV1BW(S) FLXS35BAVMB FCQ35C7VEB CTXG50JV1BW(S) FLXS50BAVMB FCQ50C7VEB FTXS20G2V1B FLXS60BAVMB FCQ60C7VEB...

  • Page 3: Table Of Contents

    SiBE18-821_C 1. Introduction ................... vii 1.1 Safety Cautions ..................vii 1.2 Used Icons ....................xi Part 1 List of Functions ..............1 1. Functions....................2 Part 2 Specifications ..............10 1. Specifications ..................11 1.1 Outdoor Unit ...................11 1.2 BP Unit ....................12 1.3 Indoor Unit....................13 Part 3 Printed Circuit Board Connector Wiring Diagram ...
  • Page 4 SiBE18-821_C 2.4 Cooling Operation Fan Control...............81 3. Special Control..................82 3.1 Startup Control ..................82 3.2 Oil Return Operation ................83 3.3 Defrosting Operation ................85 3.4 Pump-down Residual Operation ............86 3.5 Restart Standby..................87 3.6 Stopping Operation ................87 4. Protection Control .................88 4.1 High Pressure Protection Control............88 4.2 Low Pressure Protection Control............89 4.3 Discharge Pipe Temperature Protection Control........90 4.4 Inverter Protection Control ..............91...
  • Page 5 SiBE18-821_C 1.5 RA Indoor Unit - F(C)TXG, FTXS, FVXS, FLXS, FDXS Series....132 1.6 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series......134 2. Field Settings ..................136 2.1 Outdoor Unit ..................136 2.2 RA Indoor Unit - F(C)TXG, FTXS, FVXS, FLXS, FDXS Series....154 2.3 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series......158 Part 7 Operation Manual ............
  • Page 6 SiBE18-821_C 6. Troubleshooting for BP Unit ..............376 6.1 Electronic Expansion Valve Abnormality..........376 6.2 BP Unit PCB Abnormality..............377 6.3 BP Liquid or Gas Pipe Thermistor Abnormality........378 6.4 Transmission Error between Indoor Unit and BP Unit......379 6.5 Transmission Error between Outdoor Unit and BP Unit.......381 6.6 Check for BP Unit.................382 7.
  • Page 7 SiBE18-821_C Part 9 Removal Procedure ............432 1. Outdoor Unit..................433 1.1 Removal of Outer Panels ..............433 1.2 Removal of PCBs / Electrical Components ..........436 1.3 Removal of Outdoor Fans / Fan Motors ..........443 1.4 Removal of Thermistors ...............445 1.5 Removal of Electronic Expansion Valves / Peripheral Equipments ..446 1.6 Removal of Four Way Valve..............450 1.7 Removal of Compressor...............451 2.

  • Page 8: Introduction

    Introduction SiBE18-821_C 1. Introduction Safety Cautions Cautions and Be sure to read the following safety cautions before conducting repair work. The caution items are classified into “ Warning” and “ Caution”. The “ Warning” Warnings items are especially important since they can lead to death or serious injury if they are not followed closely.
  • Page 9 SiBE18-821_C Introduction Warning Be sure to wear a safety helmet, gloves, and a safety belt when working at a high place (more than 2 m). Insufficient safety measures may cause a fall accident. In case of R-410A refrigerant models, be sure to use pipes, flare nuts and tools for the exclusive use of the R-410A refrigerant.
  • Page 10 Introduction SiBE18-821_C 1.1.2 Cautions Regarding Safety of Users Warning Be sure to use parts listed in the service parts list of the applicable model and appropriate tools to conduct repair work. Never attempt to modify the equipment. The use of inappropriate parts or tools may cause an electrical shock, excessive heat generation or fire.
  • Page 11 SiBE18-821_C Introduction Warning Check to make sure that the power cable plug is not dirty or loose, then insert the plug into a power outlet securely. If the plug has dust or loose connection, it may cause an electrical shock or fire. Be sure to install the product correctly by using the provided standard For unitary type installation frame.

  • Page 12: Used Icons

    Introduction SiBE18-821_C Caution Be sure to measure the insulation resistance after the repair, and make sure that the resistance is 1 MΩ or higher. Faulty insulation may cause an electrical shock. Be sure to check the drainage of the indoor unit after the repair. Faulty drainage may cause the water to enter the room and wet the furniture and floor.

  • Page 13: Part 1 List Of Functions

    SiBE18-821_C Part 1 List of Functions 1. Functions....................2 List of Functions...

  • Page 14: Functions

    Functions SiBE18-821_C 1. Functions Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air-Purifying Filter — Function Clean – Operation Limit for Cooling (°CDB) Photocatalytic Deodorizing Filter — Air-Purifying Filter with Photocatalytic – Operation Limit for Heating (°CWB) —...
  • Page 15 SiBE18-821_C Functions Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air-Purifying Filter — — Function Clean Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — — Air-Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
  • Page 16 Functions SiBE18-821_C Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air-Purifying Filter — — Function Clean Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — — Air-Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
  • Page 17 SiBE18-821_C Functions Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air-Purifying Filter — — Function Clean Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — — Air-Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
  • Page 18 Functions SiBE18-821_C Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air-Purifying Filter — — Function Clean Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — — Air-Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
  • Page 19 SiBE18-821_C Functions Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air-Purifying Filter — Function Clean Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — Air-Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) — —...
  • Page 20 Functions SiBE18-821_C Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air-Purifying Filter — — Function Clean Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — — Air-Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
  • Page 21 SiBE18-821_C Functions Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air-Purifying Filter — — Function Clean Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — — Air-Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...

  • Page 22: Part 2 Specifications

    SiBE18-821_C Part 2 Specifications 1. Specifications ..................11 1.1 Outdoor Unit ...................11 1.2 BP Unit ....................12 1.3 Indoor Unit....................13 Specifications...

  • Page 23: Part 2 Specifications

    3.22 Max. Total Indoor Unit Capacity Index 162.5 Min. Total Indoor Unit Capacity Index 62.5 Power Consumption — Running Current — Casing Color Daikin White Type Hermetically Sealed Scroll Type Compressor Model JT100G-VDL Motor Output Model DAPHNE FVC68D Refrigerant Charge...

  • Page 24: Bp Unit

    Specifications SiBE18-821_C BP Unit 50 Hz, 230 V Model BPMKS967B2B BPMKS967B3B Connectable Indoor Units 1 ~ 2 Units 1 ~ 3 Units Casing Color Paintingless Power Consumption Running Current 0.05 0.05 Refrigerant Type R-410A Dimension (H × W × D) 180 ×...

  • Page 25: Indoor Unit

    SiBE18-821_C Specifications Indoor Unit Wall Mounted Type 50 Hz, 220 - 230 - 240 V FTXG25EV1BW FTXG25EV1BS Model Cooling Heating Cooling Heating Rated Capacity 2.5 kW Class 2.5 kW Class Front Panel Color Mat Crystal White Mat Crystal Silver 7.7 (271) 9.0 (317) 7.7 (271) 9.0 (317)
  • Page 26 Specifications SiBE18-821_C 50 Hz, 220 - 230 - 240 V CTXG50EV1BW CTXG50EV1BS Model Cooling Heating Cooling Heating Rated Capacity 5.0 kW Class 5.0 kW Class Front Panel Color Mat Crystal White Mat Crystal Silver 11.3 (398) 12.6 (444) 11.3 (398) 12.6 (444) 9.1 (320) 10.6 (373)
  • Page 27 SiBE18-821_C Specifications 50 Hz, 220 - 230 - 240 V FTXG35JV1BW FTXG35JV1BS Model Cooling Heating Cooling Heating Rated Capacity 3.5 kW Class 3.5 kW Class Front Panel Color White Silver 10.1 (357) 10.8 (381) 10.1 (357) 10.8 (381) 7.3 (258) 8.6 (304) 7.3 (258) 8.6 (304)
  • Page 28 Specifications SiBE18-821_C 50 Hz, 220 - 230 - 240 V FTXS20G2V1B FTXS25G2V1B Model Cooling Heating Cooling Heating Rated Capacity 2.0 kW Class 2.5 kW Class Front Panel Color White White 9.4 (332) 9.9 (350) 9.1 (321) 9.8 (346) 7.4 (262) 8.2 (290) 7.1 (252) 7.9 (280)
  • Page 29 SiBE18-821_C Specifications 50 Hz, 220 - 230 - 240 V FTXS50G2V1B Model Cooling Heating Rated Capacity 5.0 kW Class Front Panel Color White 10.2 (360) 11.0 (388) 8.6 (305) 9.3 (330) m³/min Airflow Rates (cfm) 7.0 (246) 7.6 (267) 6.0 (212) 6.7 (236) Type Cross Flow Fan...
  • Page 30 Specifications SiBE18-821_C 50 Hz, 220 - 230 - 240 V FTXS60GV1B FTXS71GV1B Model Cooling Heating Cooling Heating Rated Capacity 6.0 kW Class 7.1 kW Class Front Panel Color White White 16.0 (565) 17.2 (607) 17.2 (607) 19.5 (689) 13.5 (477) 14.9 (526) 14.5 (512) 16.7 (590)
  • Page 31 SiBE18-821_C Specifications 50 Hz, 220 - 230 - 240 V Floor Standing Type FVXS25FV1B FVXS35FV1B Model Cooling Heating Cooling Heating Rated Capacity 2.5 kW Class 3.5 kW Class Front Panel Color White White 8.2 (290) 8.8 (311) 8.5 (300) 9.4 (332) 6.5 (229) 6.9 (244) 6.7 (237)
  • Page 32 Specifications SiBE18-821_C Floor / Ceiling Suspended Dual Type 50 Hz, 220 - 230 - 240 V FLXS25BAVMB FLXS35BAVMB Model Cooling Heating Cooling Heating Rated Capacity 2.5 kW Class 3.5 kW Class Front Panel Color Almond White Almond White 7.6 (268) 9.2 (325) 8.6 (304) 9.8 (346)

  • Page 33: Duct Connected Type

    SiBE18-821_C Specifications Duct Connected Type 50 Hz, 230 V FDXS25EAVMB FDXS35EAVMB Model Cooling Heating Cooling Heating Rated Capacity 2.5 kW Class 3.5 kW Class — — Front Panel Color 8.7 (307) 8.7 (307) 8.7 (307) 8.7 (307) 8.0 (282) 8.0 (282) 8.0 (282) 8.0 (282) m³/min...

  • Page 34: Ceiling Mounted Cassette Type

    Specifications SiBE18-821_C Ceiling Mounted Cassette Type 50 Hz, 230 V FFQ25B8V1B FFQ35B8V1B Model Cooling Heating Cooling Heating Rated Capacity 2.5 kW Class 3.5 kW Class Color White White Decoration Panel Dimensions (H × W × D) 55 × 700 × 700 55 ×...
  • Page 35 SiBE18-821_C Specifications 50 Hz, 220 - 230 - 240 V / 60 Hz, 220 V FCQ35C7VEB FCQ50C7VEB Model Cooling Heating Cooling Heating Rated Capacity 3.5 kW Class 5.0 kW Class Color Pure White Pure White Decoration Panel Dimensions (H × W × D) 50 ×...
  • Page 36 Specifications SiBE18-821_C Ceiling Mounted Built-in Type 50 Hz, 220 - 230 - 240 V / 50 Hz, 230 V 60 Hz, 220 V FDBQ25B8V1 FBQ35C7VEB Model Cooling Heating Cooling Heating Rated Capacity 2.5 kW Class 3.5 kW Class Color — White Decoration Panel...

  • Page 37: Ceiling Suspended Type

    SiBE18-821_C Specifications Ceiling Suspended Type 50 Hz, 220 - 230 - 240 V FHQ35BVV1B FHQ50BVV1B Model Cooling Heating Cooling Heating Rated Capacity 3.5 kW Class 5.0 kW Class Panel Color White White 13.0 (459) 13.0 (459) 13.0 (459) 13.0 (459) Airflow Rates m³/min 10.0 (353)

  • Page 38: Part 3 Printed Circuit Board Connector Wiring Diagram

    SiBE18-821_C Part 3 Printed Circuit Board Connector Wiring Diagram 1. Outdoor Unit ....................27 1.1 RMXS112/140/160E8V1B..............27 2. BP Unit ......................30 2.1 BPMKS967B2B/B3B ................30 3. Indoor Unit .......................31 3.1 Wall Mounted Type ................31 3.2 Floor Standing Type ................44 3.3 Floor / Ceiling Suspended Dual Type.............46 3.4 Duct Connected Type................48 3.5 Ceiling Mounted Cassette Type .............50 3.6 Ceiling Mounted Built-in Type ..............54...

  • Page 39: Outdoor Unit

    SiBE18-821_C Outdoor Unit 1. Outdoor Unit RMXS112/140/160E8V1B Connectors and [A1P]: Main PCB Other Parts 1) X5A Connector to service PCB (A2P) 2) X11A Connector for outdoor temperature thermistor 3) X12A Connector for thermistors (suction pipe 1, suction pipe 2, outdoor heat exchanger, discharge pipe) 4) X13A Connector for thermistors (subcooling outlet, liquid pipe 1, liquid pipe 2) 5) X17A...
  • Page 40 Outdoor Unit SiBE18-821_C PCB Detail [A1P]: Main PCB X106A X107A X111A X66A X37A X81A X22A X21A X13A X11A X12A X51A X18A X17A X32A X25A X26A X27A X28A 2P210295-1 Printed Circuit Board Connector Wiring Diagram...
  • Page 41 SiBE18-821_C Outdoor Unit [A2P]: Service PCB H1P H2PH3PH4P H5PH6PH7P X205A 2P210296-1 [A3P]: Noise Filter PCB 2P210297-1 [A4P]: Cool / Heat Selector PCB 2P174187-1 Printed Circuit Board Connector Wiring Diagram...

  • Page 42: Bp Unit

    BP Unit SiBE18-821_C 2. BP Unit BPMKS967B2B/B3B Connectors and 1) X20A Connector for bypass electronic expansion valve Other Parts 2) X21A - X23A Connector for electronic expansion valve for room A, B, C 3) X90A Connector for thermistors 4) F2U Fuse (3.15 A / 250 V) 5) X3M Terminal for inter connecting wire to room A...

  • Page 43: Indoor Unit

    SiBE18-821_C Indoor Unit 3. Indoor Unit Wall Mounted Type 3.1.1 FTXG25/35EV1BW(S), CTXG50EV1BW(S) Connectors and PCB (1): Control PCB Other Parts 1) S1 Connector for fan motor 2) S21 Connector for centralized control (HA) 3) S32 Indoor heat exchanger thermistor 4) S36 Connector for INTELLIGENT EYE sensor PCB 5) S41 Connector for swing motors...
  • Page 44 Indoor Unit SiBE18-821_C PCB Detail PCB (1): Control PCB JB JA JC LED A 2P165085-1 PCB (2): Signal Receiver PCB RTH1 LED4 LED2 LED3 2P165085-1 PCB (3): INTELLIGENT EYE Sensor PCB 3P043610-2 Printed Circuit Board Connector Wiring Diagram...
  • Page 45 SiBE18-821_C Indoor Unit 3.1.2 FTXG25/35JV1BW(S), CTXG50JV1BW(S) Connectors and [A1P]: Control PCB Other Parts 1) S21 Connector for centralized control (HA) 2) S25 Connector for INTELLIGENT EYE sensor PCB 3) S32 Indoor heat exchanger thermistor 4) S41 Connector for swing motors 5) S42 Connector for reduction motor (front panel mechanism) and limit switch 6) S46...
  • Page 46 Indoor Unit SiBE18-821_C PCB Detail [A1P]: Control PCB JB JC LED A S200 2P254830-1 Printed Circuit Board Connector Wiring Diagram...
  • Page 47 SiBE18-821_C Indoor Unit [A2P]: Signal Receiver / Display PCB 3P254832-1 [A3P]: INTELLIGENT EYE Sensor PCB 3P255914-1 Printed Circuit Board Connector Wiring Diagram...
  • Page 48 Indoor Unit SiBE18-821_C 3.1.3 FTXS20/25/35/42/50G2V1B Connectors and PCB (1): Control PCB Other Parts 1) S1 Connector for DC fan motor 2) S21 Connector for centralized control (HA) 3) S25 Connector for INTELLIGENT EYE sensor PCB 4) S32 Indoor heat exchanger thermistor 5) S41 Connector for swing motors 6) S46...
  • Page 49 SiBE18-821_C Indoor Unit PCB Detail PCB (1): Control PCB LED A 2P206687-1 Printed Circuit Board Connector Wiring Diagram...
  • Page 50 Indoor Unit SiBE18-821_C PCB (2): Signal Receiver PCB 3P210728-1 PCB (3): Display PCB RTH1 LED3 LED2 LED1 3P210728-1 PCB (4): INTELLIGENT EYE Sensor PCB 3EB86013-1 Printed Circuit Board Connector Wiring Diagram...
  • Page 51 SiBE18-821_C Indoor Unit 3.1.4 FTXS60/71FV1B Connectors and PCB (1): Control PCB Other Parts 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 Connector for buzzer PCB 6) S28...
  • Page 52 Indoor Unit SiBE18-821_C PCB Detail PCB (1): Control PCB LED A 2P099167-1 PCB (2): Signal Receiver PCB PCB (3): Buzzer PCB 2P099167-1 RTH1 2P099167-1 PCB (4): Display PCB PCB (5): INTELLIGENT EYE Sensor PCB LED1 LED2 LED3 2P099167-1 3P099913-1 Printed Circuit Board Connector Wiring Diagram...
  • Page 53 SiBE18-821_C Indoor Unit 3.1.5 FTXS60/71GV1B Connectors and PCB (1): Control PCB Other Parts 1) S1 Connector for DC fan motor 2) S21 Connector for centralized control (HA) 3) S25 Connector for INTELLIGENT EYE sensor PCB 4) S32 Connector for indoor heat exchanger thermistor 5) S41 Connector for swing motors 6) S46...
  • Page 54 Indoor Unit SiBE18-821_C PCB Detail PCB (1): Control PCB (3.15A) LED A 2P227881-2 Printed Circuit Board Connector Wiring Diagram...
  • Page 55 SiBE18-821_C Indoor Unit PCB (2): Signal Receiver PCB 3P247309-1 PCB (3): Display PCB LED1 LED2 LED3 RTH1 3P247309-1 PCB (4): INTELLIGENT EYE Sensor PCB 3P227885-1 Printed Circuit Board Connector Wiring Diagram...

  • Page 56: Floor Standing Type

    Indoor Unit SiBE18-821_C Floor Standing Type 3.2.1 FVXS25/35/50FV1B PCB (1): Sensor PCB Connectors and Other Parts 1) S49 Connector for control PCB 2) RTH2 (R1T) Room temperature thermistor PCB (2): Control PCB 1) S1 Connector for fan motor 2) S21 Connector for centralized control (HA) 3) S26 Connector for service PCB...
  • Page 57 SiBE18-821_C Indoor Unit PCB Detail PCB (1): Sensor PCB RTH2 3P191450-1 PCB (2): Control PCB LED A S21 S41 2P191446-1 PCB (3): Service PCB PCB (4): Display PCB LED1 LED2 3P191447-1 SW2-4 3P191448-1 ★ LED3 does not function. Printed Circuit Board Connector Wiring Diagram...

  • Page 58: Floor / Ceiling Suspended Dual Type

    Indoor Unit SiBE18-821_C Floor / Ceiling Suspended Dual Type 3.3.1 FLXS25/35/50/60BAVMB Connectors and PCB (1): Control PCB Other Parts 1) S6 Connector for swing motor (horizontal swing) 2) S7 Connector for AC fan motor 3) S21 Connector for centralized control (HA) 4) S24 Connector for display PCB 5) S26...
  • Page 59 SiBE18-821_C Indoor Unit PCB Detail PCB (1): Control PCB LED A 2P084352-3 PCB (2): Power Supply PCB 2P084361-1 PCB (3): Display PCB PCB (4): Signal Receiver PCB LED3 LED2 LED1 EX511 REV 12 2P084377-5 PHOTO 2P084377- S31 (RTH) 2P084377-5 Printed Circuit Board Connector Wiring Diagram...

  • Page 60: Duct Connected Type

    Indoor Unit SiBE18-821_C Duct Connected Type 3.4.1 FDXS25/35EAVMB, FDXS50/60CVMB Connectors and PCB (1): Control PCB Other Parts 1) S1 Connector for AC fan motor 2) S7 Connector for AC fan motor (Hall IC) 3) S21 Connector for centralized control (HA) 4) S26 Connector for display PCB 5) S32...
  • Page 61 SiBE18-821_C Indoor Unit PCB Detail PCB (1): Control PCB LED A 2P131149-1 PCB (2): Display PCB LED3 LED2 RTH1 LED1 2P084375-1 Printed Circuit Board Connector Wiring Diagram...

  • Page 62: Ceiling Mounted Cassette Type

    Indoor Unit SiBE18-821_C Ceiling Mounted Cassette Type 3.5.1 FFQ25/35/50/60B8V1B Connectors and [A1P]: Control PCB Other Parts 1) X5A Connector for terminal board (for wired remote controller) 2) X10A, X11A Connector for transformer 3) X15A Connector for float switch 4) X17A, X18A Connector for indoor heat exchanger thermistor 5) X19A Connector for room temperature thermistor...
  • Page 63 SiBE18-821_C Indoor Unit PCB Detail [A1P]: Control PCB X20A X25A X27A X11A X10A X33A X18A X19A X61A X60A X36A X40A X17A X15A 2P095006-8 X24A X35A Printed Circuit Board Connector Wiring Diagram...
  • Page 64 Indoor Unit SiBE18-821_C 3.5.2 FCQ35/50/60C7VEB Connectors and [A1P]: Control PCB Other Parts 1) X15A Connector for float switch 2) X16A Connector for sensor PCB 3) X17A, X18A Connector for indoor heat exchanger thermistor 4) X20A Connector for fan motor 5) X24A Connector for signal receiver PCB (when the wireless remote controller is used) 6) X25A...
  • Page 65 SiBE18-821_C Indoor Unit PCB Detail [A1P]: Control PCB X36A X16A X18A X15A X30A X24A X20A X27A X25A 2P233635-7 [A2P]: Sensor PCB 4P159171-1 Printed Circuit Board Connector Wiring Diagram...

  • Page 66: Ceiling Mounted Built-In Type

    Indoor Unit SiBE18-821_C Ceiling Mounted Built-in Type 3.6.1 FDBQ25B8V1 Connectors and [A1P]: Control PCB Other Parts 1) X5A Connector for terminal board (for wired remote controller) 2) X10A, X11A Connector for transformer 3) X15A Connector for float switch 4) X17A Connector for indoor heat exchanger thermistor 5) X18A Connector for liquid pipe thermistor...
  • Page 67 SiBE18-821_C Indoor Unit PCB Detail [A1P]: Control PCB X21A X27A X25A X40A X11A X10A X35A X33A X60A X61A 2P095008-8 X15A X18A X19A X17A Printed Circuit Board Connector Wiring Diagram...
  • Page 68 Indoor Unit SiBE18-821_C 3.6.2 FBQ35/50/60C7VEB Connectors and [A1P]: Control PCB Other Parts 1) X15A Connector for float switch 2) X16A Connector for room temperature thermistor 3) X17A Connector for gas pipe thermistor 4) X18A Connector for liquid pipe thermistor 5) X25A Connector for drain pump motor 6) X27A Connector for terminal board (for inter-unit wiring)
  • Page 69 SiBE18-821_C Indoor Unit PCB Detail [A1P]: Control PCB X17A X18A X15A X30A X16A X70A X85A X33A X35A X27A X28A X25A 2P202878-3 Printed Circuit Board Connector Wiring Diagram...
  • Page 70 Indoor Unit SiBE18-821_C [A2P]: Fan PCB (for FBQ35/50C7VEB) X10A 2P207230-1 [A2P]: Fan PCB (for FBQ60C7VEB) X10A X3A HAP 2P210642-2 Printed Circuit Board Connector Wiring Diagram...

  • Page 71: Ceiling Suspended Type

    SiBE18-821_C Indoor Unit Ceiling Suspended Type 3.7.1 FHQ35/50/60BVV1B Connectors and [A1P]: Control PCB Other Parts 1) X5A Connector for terminal board (for wired remote controller) 2) X10A, X11A Connector for transformer 3) X14A Connector for limit switch (for swing flap) 4) X15A Connector for float switch (option) 5) X17A, X18A...
  • Page 72 Indoor Unit SiBE18-821_C PCB Detail [A1P]: Control PCB X19A X18A X40A X15A X17A X14A X61A X35A X60A X33A X10A X24A X11A X26A X27A X25A X29A X20A 2P095007-7 Printed Circuit Board Connector Wiring Diagram...

  • Page 73: Remote Controller

    SiBE18-821_C Remote Controller 4. Remote Controller Wired Remote Controller 4.1.1 BRC1D528 Connectors and 1) P1, P2 Terminal for indoor unit Other Parts 2) R1T Room temperature thermistor 3) SS1 MAIN / SUB setting switch ∗ Refer to page 162 for detail. PCB Detail 2P113638-2 Printed Circuit Board Connector Wiring Diagram...
  • Page 74 Remote Controller SiBE18-821_C 4.1.2 BRC1E51A7 Connectors and 1) P1, P2 Terminal for indoor unit Other Parts 2) R1T Room temperature thermistor PCB Detail 2P243326-1 Printed Circuit Board Connector Wiring Diagram...

  • Page 75: Wireless Remote Controller

    SiBE18-821_C Remote Controller Wireless Remote Controller 4.2.1 BRC7E530W, BRC7F532F, BRC7EA63W Connectors and [A3P]: Signal Receiver PCB Other Parts 1) X1A Connector for display PCB 2) X2A Connector for control PCB 3) SS1 MAIN / SUB setting switch 4) SS2 Address setting switch ∗...
  • Page 76 Remote Controller SiBE18-821_C PCB Detail [A3P]: Signal Receiver PCB 3P156326-2 [A4P]: Display PCB (BRC7E530W) LED4 LED3 LED2 LED1 3P086209-1 ★ LED5 and LED6 do not function. [A4P]: Display PCB (BRC7F532F) LED4 LED3 LED2 LED1 3P174795-1 ★ LED5 and LED6 do not function. [A4P]: Display PCB (BRC7EA63W) LED1 LED2...

  • Page 77: Part 4 Refrigerant Circuit

    SiBE18-821_C Part 4 Refrigerant Circuit 1. Refrigerant Circuit .................66 1.1 Outdoor Unit ...................66 1.2 BP Unit ....................68 2. Functional Parts Layout ................69 2.1 Outdoor Unit ...................69 3. Refrigerant Flow for Each Operation Mode...........71 3.1 Cooling Operation ..................71 3.2 Heating Operation ..................72 3.3 Cooling Oil Return Operation ..............73 3.4 Heating Oil Return Operation &...

  • Page 78: Refrigerant Circuit

    Refrigerant Circuit SiBE18-821_C 1. Refrigerant Circuit Outdoor Unit No. in Symbol Name Major Function diagram The compressor is operated on frequencies between 36 Hz and 195 Hz by using Compressor motor inverter. 31 steps Since the system is of air heat exchanging type, the fan is operated at 8-step rotation Fan motor speed by using the inverter.
  • Page 79 SiBE18-821_C Refrigerant Circuit C : 3D052712 Refrigerant Circuit...

  • Page 80: Bp Unit

    Refrigerant Circuit SiBE18-821_C BP Unit No. in Symbol Name Major Function 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 non-operating room) EVT.

  • Page 81: Functional Parts Layout

    SiBE18-821_C Functional Parts Layout 2. Functional Parts Layout Outdoor Unit Front View Y2S: Solenoid valve (Connector: black) L1R: Reactor lead wire (High voltage) Y2S: Solenoid valve lead wire (Connector: black) (High voltage) S1NPH: High pressure sensor (Connector: red) Y1S: Four way valve lead wire Y1S: Four way valve (Connector: blue) (Connector: blue)
  • Page 82 Functional Parts Layout SiBE18-821_C Back View R6T : Thermistor (subcooling heat exchanger gas pipe) (Marking : white) R3T : Thermistor (suction pipe 1) (Marking : red) R5T : Thermistor (suction pipe 2) (Marking : green) R1T : Thermistor (outdoor temperature) (Marking : yellow) R8T : Thermistor (liquid pipe 2) (Connector : white)

  • Page 83: Refrigerant Flow For Each Operation Mode

    SiBE18-821_C Refrigerant Flow for Each Operation Mode 3. Refrigerant Flow for Each Operation Mode Cooling Operation Refrigerant Circuit...

  • Page 84: Heating Operation

    Refrigerant Flow for Each Operation Mode SiBE18-821_C Heating Operation Refrigerant Circuit...

  • Page 85: Cooling Oil Return Operation

    SiBE18-821_C Refrigerant Flow for Each Operation Mode Cooling Oil Return Operation Refrigerant Circuit...

  • Page 86: Heating Oil Return Operation & Defrost Operation

    Refrigerant Flow for Each Operation Mode SiBE18-821_C Heating Oil Return Operation & Defrost Operation Refrigerant Circuit...

  • Page 87: Part 5 Function

    SiBE18-821_C Part 5 Function 1. Operation Mode ..................77 2. Basic Control..................78 2.1 Normal Operation ...................78 2.2 Compressor PI Control................79 2.3 Electronic Expansion Valve PI Control...........80 2.4 Cooling Operation Fan Control...............81 3. Special Control..................82 3.1 Startup Control ..................82 3.2 Oil Return Operation ................83 3.3 Defrosting Operation ................85 3.4 Pump-down Residual Operation ............86 3.5 Restart Standby..................87...
  • Page 88 SiBE18-821_C 8. Indoor Unit Control (SA Models) ............119 8.1 Drain Pump Control................119 8.2 Thermostat Sensor in Remote Controller..........121 8.3 Freeze Prevention Control ..............123 8.4 Hot Start Control (In Heating Operation Only)........124 Function...

  • Page 89: Operation Mode

    SiBE18-821_C Operation Mode 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 90: Basic Control

    Basic Control SiBE18-821_C 2. Basic Control Normal Operation [Cooling Operation] Actuator Operation Remarks Used for high pressure protection control, low pressure protection control, discharge pipe Compressor Compressor PI control temperature protection control, and compressor operating frequency upper limit control with inverter protection control.

  • Page 91: Compressor Pi Control

    SiBE18-821_C Basic Control Compressor PI Control The PI control of compressor capacity is carried out 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 temperature achieve target value (TeS).

  • Page 92: Electronic Expansion Valve Pi Control

    Basic Control SiBE18-821_C Electronic Expansion Valve PI Control Main Electronic Expansion Valve The PI control of electronic expansion valve (Y1E) is carried out 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 93: Cooling Operation Fan Control

    SiBE18-821_C Basic Control Cooling Operation Fan Control In cooling operation with low outdoor temperature, this control is used to provide the adequate amount of circulating air with liquid pressure secured by high pressure control using outdoor fan. Furthermore, when outdoor temperature ≥ 20°C, the compressor runs in Step 7 or higher. When outdoor temperature ≥...

  • Page 94: Special Control

    Special Control SiBE18-821_C 3. Special Control Startup Control This control is used to equalize the pressure in the front and back of the compressor prior to the startup of the compressor, thus reducing startup loads. Furthermore, the inverter is turned ON to charge the capacitor.

  • Page 95: Oil Return Operation

    SiBE18-821_C Special Control Oil Return Operation In order to prevent the compressor from running out of oil, the oil return operation is conducted to recover oil flown out from the compressor to the system side. 3.2.1 Oil Return Operation in Cooling Operation [Conditions to start] Referring to the set conditions for the following items, start the oil return operation in cooling.
  • Page 96 Special Control SiBE18-821_C 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 97: Defrosting Operation

    SiBE18-821_C Special Control Defrosting Operation The defrosting operation is performed to solve frost on the outdoor unit heat exchanger when heating, and the heating capacity is recovered. [Conditions to start] The defrosting operation is started referring following conditions. Outdoor heat exchanger heat transfer co-efficiency Outdoor heat exchanger temperature (Tb) Timer (2 hours at the minimum) In addition, outdoor heat-exchange co-efficiency is derived from Tc, Te, and the compressor...

  • Page 98: Pump-Down Residual Operation

    Special Control SiBE18-821_C 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 99: Restart Standby

    SiBE18-821_C Special Control Restart Standby Restart is prohibited to prevent frequent power-on/off and to equalize pressure in the refrigerant system. Actuator Operation Remarks  Compressor Ta > 30°C: STEP 4  Outdoor fan Ta ≤ 30°C: OFF  Four way valve (Y1S) Former condition remains.

  • Page 100: Protection Control

    Protection Control SiBE18-821_C 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 101: Low Pressure Protection Control

    SiBE18-821_C 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: Low pressure sensor detection value < 0.25 MPa >...

  • Page 102: Discharge Pipe Temperature Protection Control

    Protection Control SiBE18-821_C Discharge Pipe Temperature Protection Control This discharge pipe temperature protection control is used to protect the compressor internal temperature against a malfunction or transient increase of discharge pipe temperature. [Compressor] Discharge pipe temperature HTdi : Value of discharge pipe temperature (Tdi) protection control not limited compensated with outdoor temperature Tp :...

  • Page 103: Inverter Protection Control

    SiBE18-821_C Protection Control Inverter Protection Control Inverter over 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 ≤ 23.8 A &...

  • Page 104: Freeze-Up Protection Control

    Protection Control SiBE18-821_C 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 divided 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 105: Dew Condensation Prevention Control

    SiBE18-821_C 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 divided 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 106: Other Control

    Other Control SiBE18-821_C 5. Other Control Demand Control In order to save the power consumption, the capacity of outdoor unit is saved with control forcibly by using “Demand 1 Setting”. To operate the unit with this mode, additional setting of “Continuous Demand Setting”. [Demand 1 setting] Setting Standard for upper limit of power consumption...

  • Page 107: Bp Unit Control

    SiBE18-821_C 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 during POWERFUL operation).

  • Page 108: Bp Unit Electronic Expansion Valve Control

    BP Unit Control SiBE18-821_C BP Unit Electronic Expansion Valve Control Purpose 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 and optimum refrigerating cycle of the system.
  • Page 109 SiBE18-821_C BP Unit Control 6.2.3 Full Closing of Electronic Expansion Valves Purpose The electronic expansion valves are initialized when the power is turned on. Detail 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 110: Sh Control In Cooling Operation

    BP Unit Control SiBE18-821_C SH Control in Cooling Operation Purpose This function ensures appropriate refrigerant distribution when many room units are operating in the cooling mode. Detail 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 111: Sc Control In Heating Operation

    SiBE18-821_C BP Unit Control Note: 1. In SkyAir models, the indoor units are equipped with distribution capillary tubes; therefore, the heat exchangers may superheat even when the condition is met. 2. In SkyAir models, the heat exchanger intermediate position is provided on the liquid connection pipe side;...

  • Page 112: Indoor Unit Control (Ra Models)

    Indoor Unit Control (RA Models) SiBE18-821_C 7. Indoor Unit Control (RA Models) Temperature Control Definitions of The definitions of temperatures are classified as following. Temperatures Room temperature: temperature of lower part of the room Set temperature: temperature set by remote controller Room thermistor temperature: temperature detected by room temperature thermistor Target temperature: temperature determined by microcomputer Target temperature...

  • Page 113: Operation Starting Control

    SiBE18-821_C Indoor Unit Control (RA Models) Operation Starting Control Wall Mounted Type E-Series, J-Series The system carries out the following control at the beginning to conduct every functional parts properly. 1. Opening the front panel fully 2. Output of the ∆ D signal after the front panel starts moving 3.

  • Page 114: Airflow Direction Control

    Indoor Unit Control (RA Models) SiBE18-821_C Airflow Direction Control Power-Airflow The large flaps send a large volume of air downwards to the floor. The flap provides an optimum control in cooling, dry, and heating mode. Dual Flaps Cooling / Dry Mode During cooling or dry mode, the flap retracts into the indoor unit.
  • Page 115 SiBE18-821_C Indoor Unit Control (RA Models) Floor / Ceiling Suspended Dual Type Vertical Swing (up and down) Cooling / Dry / Fan Heating Ceiling (R2964) (R2963) Floor (R2966) (R2967) 3-D Airflow Wall Mounted Type E-Series, G-Series, F-Series Alternative repetition of vertical and horizontal swing motions enables uniform air-conditioning of the entire room.

  • Page 116: Fan Speed Control For Indoor Units

    Indoor Unit Control (RA Models) SiBE18-821_C Fan Speed Control for Indoor Units Outline Phase control and fan speed control contains 9 steps: LLL, LL, SL, L, ML, M, MH, H, and HH. The airflow rate can be automatically controlled depending on the difference between the room thermistor temperature and the target temperature.

  • Page 117: Program Dry Operation

    SiBE18-821_C Indoor Unit Control (RA Models) COMFORT Wall Mounted Type E-Series, J-Series, G-Series The fan speed is controlled automatically within the following steps. AIRFLOW Cooling: L tap – MH tap (same as AUTOMATIC) Operation Heating: ML tap – M tap ~ MH tap (depending on the model) The latest command has the priority between POWERFUL and COMFORT AIRFLOW.

  • Page 118: Automatic Operation

    Indoor Unit Control (RA Models) SiBE18-821_C Automatic Operation Outline Automatic Cooling / Heating Function When the AUTO mode is selected with the remote controller, the microcomputer automatically determines the operation mode as cooling or heating according to the room temperature and the set temperature at start-up, and automatically operates in that mode.

  • Page 119: Thermostat Control

    SiBE18-821_C Indoor Unit Control (RA Models) Thermostat Control Thermostat control is based on the difference between the room thermistor temperature and the target temperature. Thermostat OFF Condition The temperature difference is in the zone A. Thermostat ON Condition The temperature difference returns to the zone C after being in the zone A. The system resumes from defrost control in any zones except A.
  • Page 120 Indoor Unit Control (RA Models) SiBE18-821_C <Heating> Wall Mounted Type J-Series, G-Series 60/71 Class Room thermistor temperature – target temperature 2.0˚C 1.5˚C 0.5˚C (R11894) Wall Mounted Type E-Series, G-Series 20-50 Class, F-Series, Floor Standing Type Room thermistor temperature – target temperature 1.5˚C 1.0˚C 0˚C...

  • Page 121: Night Set Mode

    SiBE18-821_C Indoor Unit Control (RA Models) NIGHT SET Mode Outline When the OFF timer is set, the NIGHT SET Mode is automatically activated. The NIGHT SET Mode keeps the airflow rate setting. Detail The NIGHT SET Mode continues operation at the target temperature for the first one hour, then automatically raises the target temperature slightly in the case of cooling, or lowers it slightly in the case of heating.

  • Page 122: Econo Operation

    Indoor Unit Control (RA Models) SiBE18-821_C ECONO Operation The "ECONO operation" reduces the maximum operating current and power consumption during start-up etc.. This operation 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 123: Home Leave Operation

    SiBE18-821_C Indoor Unit Control (RA Models) 7.10 HOME LEAVE Operation Outline HOME LEAVE operation is a function that allows you to record your favorite set temperature and airflow rate. You can start your favorite operation mode simply by pressing the [HOME LEAVE] button on the remote controller.

  • Page 124: 2-Area Intelligent Eye Operation

    Indoor Unit Control (RA Models) SiBE18-821_C 7.11 2-Area INTELLIGENT EYE Operation Outline Wall Mounted Type G-Series 20-50 Class The following functions can be performed by a motion sensor (INTELLIGENT EYE). 1. Reduction of the capacity when there is nobody in the room in order to save electricity (energy saving operation) 2.
  • Page 125 SiBE18-821_C Indoor Unit Control (RA Models) 2. Motions (for example: in cooling) within 20 minutes 20 min. 20 min. Human detection signal RESET. (From area A or B) Target temperature INTELLIGENT EYE lamp Remote controller INTELLIGENT EYE button Operation Set speed Set speed Fan speed ( 1) (R12183)

  • Page 126: Intelligent Eye Operation

    Indoor Unit Control (RA Models) SiBE18-821_C 7.12 INTELLIGENT EYE Operation Outline Wall Mounted Type E-Series, J-Series, F-Series, G-Series 60/71 Class 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 nobody in the room in order to save electricity.

  • Page 127: Inverter Powerful Operation

    SiBE18-821_C Indoor Unit Control (RA Models) 7.13 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. Detail When POWERFUL button is pressed, the fan speed and target temperature are converted to the following states for 20 minutes.
  • Page 128 Indoor Unit Control (RA Models) SiBE18-821_C Brightness The brightness of the multi-colored indicator lamp can be adjusted L (low), H (high), or OFF. Setting 1. Press the center of the Temp button and the Mode button at the same time. (R11669) “...

  • Page 129: Other Functions

    SiBE18-821_C Indoor Unit Control (RA Models) 7.14 Other Functions 7.14.1 Hot-Start Function In order to prevent the cold air blast that normally comes when heating operation is started, the temperature of the indoor heat exchanger is detected, and either the airflow is stopped or is made very weak thereby carrying out comfortable heating of the room.

  • Page 130: Weekly Timer Operation

    Indoor Unit Control (RA Models) SiBE18-821_C 7.14.7 Auto-restart Function Even if a power failure (including one for just a moment) occurs during the operation, the operation restarts automatically when the power is restored in the same condition as before the power failure.

  • Page 131: Indoor Unit Control (Sa Models)

    SiBE18-821_C Indoor Unit Control (SA Models) 8. Indoor Unit Control (SA Models) Drain Pump Control 8.1.1 When the Float Switch is Tripped While the Cooling Thermostat is The remote controller displays "A3" and the indoor unit stops. Thermostat (running) Float switch Drain pump 5 min.
  • Page 132 Indoor Unit Control (SA Models) SiBE18-821_C 8.1.3 When the Float Switch is Tripped During Heating Operation: The remote controller displays "A3" and the indoor unit stops. Thermostat (running) Humidifier Reset Float switch Drain pump 5 sec. 5 min. 5 min. (R12935) During heating operation, if the float switch is not reset even after the 5 minutes operation, 5 seconds stop, 5 minutes operation cycle ends, operation continues until the switch is...

  • Page 133: Thermostat Sensor In Remote Controller

    SiBE18-821_C Indoor Unit Control (SA Models) Thermostat Sensor in Remote Controller Temperature is controlled by both the thermostat sensor in remote controller and air suction thermostat in the indoor unit. (This is however limited to when the field setting for the thermostat sensor in remote controller is set to “Use.”) Cooling If there is a significant difference in the set temperature and the suction temperature, fine...
  • Page 134 Indoor Unit Control (SA Models) SiBE18-821_C Heating When heating, the hot air rises to the top of the room, resulting in the temperature being lower near the floor where the occupants are. When controlling by body thermostat sensor only, the indoor unit may therefore be turned off by the thermostat before the lower part of the room reaches the set temperature.

  • Page 135: Freeze Prevention Control

    SiBE18-821_C Indoor Unit Control (SA Models) Freeze Prevention Control When the temperature detected by liquid pipe thermistor (R2T) of the indoor heat exchanger drops too low, the unit enters freeze prevention control in accordance with the following conditions, and is also set in accordance with the conditions given below. Conditions for starting: Temperature is –1°C or less for total of 40 min., or temperature is –5°C or less for total of 10 min.

  • Page 136: Hot Start Control (In Heating Operation Only)

    Indoor Unit Control (SA Models) SiBE18-821_C Hot Start Control (In Heating Operation Only) Outline At startup with thermostat ON or after the completion of defrosting in heating operation, the indoor unit fan is controlled to prevent cold air from blasting out and ensure startup capacity. Detail Defrost ending or oil return ending Hot start ending conditions...

  • Page 137: Part 6 Test Operation And Field Settings

    SiBE18-821_C Part 6 Test Operation and Field Settings 1. Test Operation ..................126 1.1 Procedure and Outline .................126 1.2 Operation when Power is Turned On ...........128 1.3 Outdoor Unit PCB Layout..............129 1.4 BP Unit ....................130 1.5 RA Indoor Unit - F(C)TXG, FTXS, FVXS, FLXS, FDXS Series....132 1.6 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series......134 2.

  • Page 138: Test Operation

    Test Operation SiBE18-821_C 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 230 V / 50 Hz? Check the below items.

  • Page 139: Check Operation

    SiBE18-821_C Test Operation 1.1.3 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 " is displayed.) Press and hold the TEST ...

  • Page 140: Operation When Power Is Turned On

    Test Operation SiBE18-821_C 1.1.4 Confirmation on Normal Operation • Conduct normal unit operation after the check operation has been completed. (When outdoor air temperature is 24°CDB or higher, the unit can not be operated with heating mode. See the installation manual attached.) •...

  • Page 141: Outdoor Unit Pcb Layout

    SiBE18-821_C Test Operation Outdoor Unit PCB Layout (The LED indicator status shown at left : Turn off : Turn on : Flicker LED indicator status indicates the status at factory set.) Reactor Curing range Cover this range with an insulating sheet. Control box Changeover between cooling Test...

  • Page 142: Bp Unit

    Test Operation SiBE18-821_C BP Unit 1.4.1 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 143 SiBE18-821_C Test Operation 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 BP units is flexible.

  • Page 144: Ra Indoor Unit - F(C)Txg, Ftxs, Fvxs, Flxs, Fdxs Series

    Test Operation SiBE18-821_C RA Indoor Unit - F(C)TXG, FTXS, FVXS, FLXS, FDXS Series Outline 1. Measure the supply voltage and make sure that it falls in the specified range. 2. Trial operation should be carried out in either cooling or heating mode. 3.
  • Page 145 SiBE18-821_C Test Operation ARC452 Series (1) Press the ON/OFF button to turn on the system. (2) Press the both of TEMP buttons and the MODE button at the same time. (3) Press the MODE button twice. (“ T ” appears on the display to indicate that trial operation is selected.) (4) Press the MODE button and select operation mode.

  • Page 146: Sa Indoor Unit - Ffq, Fcq, Fdbq, Fbq, Fhq Series

    Test Operation SiBE18-821_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series 1.6.1 Check points To carry out test operation, check the followings: Check that the temperature setting of the remote controller is at the lowest level in cooling mode.
  • Page 147 SiBE18-821_C Test Operation BRC1E51A7 Step Action Remote controller Before test operation Turn on the power supply more than 6 hours before test operation. Open the gas stop valve. Open the liquid stop valve. How to activate test operation Press and hold the [Cancel] button ( for 4 seconds to enter the Field setting menu.

  • Page 148: Field Settings

    Field Settings SiBE18-821_C 2. Field Settings Outdoor Unit 2.1.1 Setting by Dip Switches The following field settings are made by dip switches on PCB. Dipswitch Setting item Description Setting Cool / Heat Used to set cool / heat change over setting by remote DS1-1 change over controller equipped with outdoor unit.
  • Page 149 SiBE18-821_C Field Settings Caution DIP switch setting after changing main PCB (A1P) to spare part PCB When you change the main PCB (A1P) to spare part PCB, please carry out the following setting. Please Attach the Capacity Setting Adaptor corresponding to Capacity Class (ex. 112, 140, 160) in connector X51A. (See Below) Capacity Setting Adaptor Note...
  • Page 150 Field Settings SiBE18-821_C Setting by push button switches The following settings are made by push button switches on PCB. LED indication (Factory setting) MODE RETURN TEST RESET (R12946) There are the following 3 setting modes. (1) Setting mode 1 (H1P off) Initial status (when normal) : Also indicates during “abnormal”.
  • Page 151 SiBE18-821_C Field Settings a. “Setting mode 1” This mode is used to set and check the following items. 1. Set items ············ In order to make COOL/HEAT selection in a batch of outdoor unit group, change the setting. • COOL/HEAT selection (IND) ·····················Used to select COOL or HEAT by individual outdoor unit (factory setting).
  • Page 152 Field Settings SiBE18-821_C b. “Setting mode 2” Setting item Description Cool/heat unified Sets address for cool/heat unified operation. Push and hold the MODE (BS1) address button for 5 seconds and set to Low noise/demand Address for low noise/demand operation “Setting mode 2”. address Used to conduct test operation without making changes Test operation...
  • Page 153 SiBE18-821_C Field Settings Setting item display C/H selection Setting condition display MODE TEST Demand Setting item noise Master Slave ∗ Factory setting k h h h h h h ∗ Address k h h h h h k Binary number Cool / heat unified address (6 digits)
  • Page 154 Field Settings SiBE18-821_C Setting item display C/H selection Setting condition display MODE TEST Demand Setting item noise Master Slave ∗ Factory setting k h h h h h k Level 1 (outdoor fan with 6 step or lower) k h h h h k h ∗ Setting of external Level 2 (outdoor fan with 5 step or lower) low noise setting...
  • Page 155 SiBE18-821_C Field Settings c. Monitor mode LED display Setting item Data display l h h h h h h To enter the monitor mode, push the Various setting See below MODE (BS1) button when in l h h h h h k Cool / heat unified address “Setting mode 1”.
  • Page 156 Field Settings SiBE18-821_C Push the BS2 (SET button) and match with the LEDs No. 1 - 15, push the BS3 (RETURN button), and confirm the data for each setting. ★ Data such as addresses and number of units is expressed as binary numbers; the two ways of expressing are as follows: The No.
  • Page 157 SiBE18-821_C Field Settings 2.1.2 Cool / Heat Mode Switching There are the following 4 cool/heat switching modes. (1) Set cool/heat separately for each outdoor unit system by indoor unit remote controller. (2) Set cool/heat separately for each outdoor unit system by cool/heat switching remote controller.
  • Page 158 Field Settings SiBE18-821_C (2) Set Cool / Heat Separately for Each Outdoor Unit System by Cool/Heat Switching Remote Controller It does not matter whether or not there is outdoor - outdoor unit wiring. Set outdoor unit PCB DS1-1 to OUT (factory setting). Set cool/heat switching to IND (individual) for “Setting mode 1”...
  • Page 159 SiBE18-821_C Field Settings 2.1.3 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. When the low noise operation is carried out automatically at night (The external control adaptor for outdoor unit is not required) 1.
  • Page 160 Field Settings SiBE18-821_C 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. Set item Condition Content Demand...
  • Page 161 SiBE18-821_C Field Settings Detailed Setting Procedure of Low Noise Operation and Demand Control 1. Setting mode 1 (H1P off) (1) In setting mode 2, push the BS1 (MODE button) one time. → Setting mode 1 is entered and H1P off. During the setting mode 1 is displayed, “In low noise operation”...
  • Page 162 Field Settings SiBE18-821_C : ON : OFF : Blink Setting Setting Setting No. indication Setting No. indication Setting Setting contents indication (Initial setting) contents contents H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P External low noise (Factory...
  • Page 163 SiBE18-821_C Field Settings 2.1.4 Setting of Refrigerant Additional Charging Operation * When the outdoor unit is stopped and the entire quantity of refrigerant cannot be charged from the stop valve on the liquid side, make sure to charge the remaining quantity of refrigerant using this procedure.
  • Page 164 Field Settings SiBE18-821_C 2.1.5 Setting of Refrigerant Recovery Mode When carrying out the refrigerant collection on site, fully open the respective expansion valve of indoor and outdoor units All indoor and outdoor unit’s operation are prohibited. [Operation procedure] (1) In “setting mode 2” with units in stop mode, set the item No.21 (refrigerant recovery / vacuuming mode) to ON.
  • Page 165 SiBE18-821_C Field Settings 2.1.6 Setting of Vacuuming Mode In order to perform vacuuming operation at site, fully open the expansion valves of indoor and outdoor units and turn on some solenoid valves. [Operating procedure] (1) In “setting mode 2” with units in stop mode, set the item No.21 (refrigerant recovery / vacuuming mode) to ON.

  • Page 166: Ra Indoor Unit - F(C)Txg, Ftxs, Fvxs, Flxs, Fdxs Series

    Field Settings SiBE18-821_C RA Indoor Unit - F(C)TXG, FTXS, FVXS, FLXS, FDXS Series 2.2.1 Model Type Setting <ARC452A1, A3> This remote controller is common to the heat pump model and cooling only model. Use the DIP switch on the remote controller to set the heat pump model or cooling only model. Make the setting as shown in the illustration.
  • Page 167 SiBE18-821_C Field Settings G-Series, 20-50 Class F-Series ADDRESS ADDRESS (R2872) EXIST ADDRESS EXIST (R12216) G-Series, 60/71 Class (R11735) < Floor Standing Type> 1) Remove the front grille. 2) Lift the sensor PCB fixing plate and remove the front shield plate. 3) Disconnect the connectors [S1] [S41] [S42].
  • Page 168 Field Settings SiBE18-821_C < Floor / Ceiling Suspended Dual Type > Cut the jumper JA on PCB. ADDRESS JA EXIST (R11732) < Duct Connected Type > Cut the jumper JA on PCB. ADDRESS : JA EXIST ADDRESS (R10276) Wireless Remote (1) Remove the cover and take it off.

  • Page 169: Jumper And Switch Settings

    SiBE18-821_C Field Settings 2.2.3 Jumper and Switch Settings Jumper Function When connected When cut (on indoor unit PCB) (factory set) Fan speed setting Fan speed setting; Fan speed setting; “0” (The fan when compressor Remote controller stops.) stops for thermostat setting OFF.

  • Page 170: Sa Indoor Unit - Ffq, Fcq, Fdbq, Fbq, Fhq Series

    Field Settings SiBE18-821_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series 2.3.1 How to Change the Field Settings Outline If optional accessories are mounted on the indoor unit, the indoor unit setting may have to be changed. Refer to the instruction manual for each optional accessory. Wired remote BRC1D528 controller...
  • Page 171 SiBE18-821_C Field Settings BRC1E51A7 Field setting list Unit No Mode Return Setting (R12878) a Unit No. b First code No. c Second code No. d Mode Step Action Remote controller Press and hold the [Cancel] button ( for 4 seconds to enter the Field setting menu.
  • Page 172 Field Settings SiBE18-821_C Wireless remote BRC7E530W, BRC7F532F, BRC7EA63W controller UP button Mode No. Field setting mode DOWN button RESERVE button First code No. MODE button Second code No. [Inspection / Test] button (R11737) To set the field settings, you have to change: Mode No.
  • Page 173 SiBE18-821_C Field Settings 2.3.2 Overview of the Field Settings First Second Code No. Mode Code Description of setting Ultra Approx. Approx. longlife 10,000 5,000 filter hrs. hrs. Filter cleaning — — sign interval Approx. Approx. Longlife 2,500 1,250 filter hrs. hrs.
  • Page 174 Field Settings SiBE18-821_C 2.3.3 MAIN / SUB Setting when Using 2 Wired Remote Controllers Outline The MAIN / SUB setting is necessary when 1 indoor unit is controlled by 2 remote controllers. When you use 2 remote controllers (control panel and separate remote controller), set one to MAIN and the other to SUB.
  • Page 175 SiBE18-821_C Field Settings 2.3.4 Address and MAIN / SUB Setting for Wireless Remote Controller Outline If several wireless remote controller units are used together in the same room (including the case where both group control and individual remote controller control are used together), be sure to set the addresses for the receiver and wireless remote controller.
  • Page 176 Field Settings SiBE18-821_C Wireless Remote 1. Hold down the “ ” button and the “ ” button at the same time for at least TEST 4 seconds to enter the field setting mode. (“SETTING” is indicated on the display). Controller 2.
  • Page 177 SiBE18-821_C Field Settings After Setting Stick the unit No. label at the decoration panel air discharge outlet as well as on the back of the wireless remote controller. Wireless remote controller Unit No. label Decoration panel (R12961) Note: Set the unit No. of the receiver and the wireless remote controller to be the same. If the settings differ, the signal from the remote controller cannot be received.

  • Page 178: Part 7 Operation Manual

    SiBE18-821_C Part 7 Operation Manual 1. System Configuration................167 2. Outdoor Unit..................168 2.1 RMXS Series..................168 3. RA Indoor Unit..................169 3.1 FTXG-J, CTXG-J Series - ARC466A1 ..........169 3.2 FTXS-G, FVXS Series - ARC452A1, A3 ..........192 3.3 FTXG-E, CTXG-E, FTXS-F, FLXS, FDXS Series - ARC433B41, B67, B69, B70 ..............227 4.

  • Page 179: System Configuration

    SiBE18-821_C System Configuration 1. System Configuration 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 180: Outdoor Unit

    Outdoor Unit SiBE18-821_C 2. Outdoor Unit 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 •...

  • Page 181: Ra Indoor Unit

    SiBE18-821_C RA Indoor Unit 3. RA Indoor Unit FTXG-J, CTXG-J Series - ARC466A1 3.1.1 Name of Parts Name of Parts Indoor Unit INTELLIGENT EYE Air inlet sensor Appearance of the indoor unit may differ. It detects the movements of people and automatically switches between normal operation and energy saving operation.
  • Page 182 RA Indoor Unit SiBE18-821_C Open the front panel Panel support plate Air filter Titanium apatite photocatalytic air-purifying filter Outdoor Unit • Appearance of the outdoor unit may differ from some models. Air inlet Outdoor temperature (back and sensor (back) side) Drain hose Earth terminal •...

  • Page 183: Signal Transmitter

    SiBE18-821_C RA Indoor Unit Name of Parts Remote Controller Signal transmitter Receiver 50cm or more Display (LCD) • It displays the current settings. • To use the remote controller, aim the (In this illustration, each section is transmitter at the indoor unit. If there shown with its displays on for the is anything to block signals between purpose of explanation.)

  • Page 184: Mode Selector Button

    RA Indoor Unit SiBE18-821_C Open the front cover MODE selector button It selects the operation mode. (AUTO/DRY/COOL/HEAT/ FAN) Page 11 ECONO button ECONO operation. Page 20 SWING button Adjusting the airflow direction. Page 13 QUIET button OUTDOOR UNIT QUIET operation. Page 19 INTELLIGENT EYE button...

  • Page 185: Fan Operation

    SiBE18-821_C RA Indoor Unit 3.1.2 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. To start operation Press and select a operation mode.

  • Page 186: Operating Conditions

    RA Indoor Unit SiBE18-821_C To change the temperature setting Press • The displayed items on the LCD will change whenever either one of the buttons is pressed. COOL operation HEAT operation AUTO operation DRY or FAN operation 18-32˚C 10-30˚C 18-30˚C The temperature setting is Press to raise the temperature and press...

  • Page 187: Adjusting The Airflow Direction And Rate

    SiBE18-821_C RA Indoor Unit 3.1.3 Adjusting the Airflow Direction and Rate Adjusting the Airflow Direction and Rate You can adjust the airflow direction to increase your comfort. To start auto swing Upper and lower airflow direction Press • “ ” is displayed on the LCD. •...
  • Page 188 RA Indoor Unit SiBE18-821_C To adjust the airflow rate setting Press Each pressing of advances the airflow rate setting in sequence. Auto Indoor unit quiet Middle low High Middle high Middle When the airflow is set to , indoor unit quiet operation will start and the noise from the unit will become quieter.

  • Page 189: Comfort Airflow Operation

    SiBE18-821_C RA Indoor Unit 3.1.4 COMFORT AIRFLOW Operation COMFORT AIRFLOW Operation The flow of air will be in the upward direction while in COOL operation and in the downward direction while in HEAT operation, which will provide a comfortable wind that will not come in direct contact with people. To start COMFORT AIRFLOW operation Press •...
  • Page 190 RA Indoor Unit SiBE18-821_C 3.1.5 INTELLIGENT EYE Operation INTELLIGENT EYE Operation “INTELLIGENT EYE” is the infrared sensor which detects the human movement. If nobody in the room for more than 20 minutes, the operation automatically changes to energy saving operation. To start INTELLIGENT EYE operation Press •...
  • Page 191 SiBE18-821_C RA Indoor Unit INTELLIGENT EYE Operation [Example] When somebody in the room When nobody in the room Somebody back in the room Normal operation 20 minutes after, start Back to normal operation. energy saving operation. • The air conditioner is in normal •...

  • Page 192: Powerful Operation

    RA Indoor Unit SiBE18-821_C 3.1.6 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 Press during operation. • POWERFUL operation ends in 20 minutes. Then the system automatically operates again with the previous settings which were used before POWERFUL operation.

  • Page 193: Outdoor Unit Quiet Operation

    SiBE18-821_C RA Indoor Unit 3.1.7 OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET 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 the night. To start OUTDOOR UNIT QUIET operation Press is displayed on the LCD.
  • Page 194 RA Indoor Unit SiBE18-821_C 3.1.8 ECONO Operation ECONO Operation ECONO operation is a function which enables efficient operation by limiting the maximum power consumption value. This function is useful for cases in which attention should be paid to ensure a circuit breaker will not trip when the product runs alongside other appliances.

  • Page 195: Off Timer Operation

    SiBE18-821_C RA Indoor Unit 3.1.9 OFF TIMER Operation OFF 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.

  • Page 196: On Timer Operation

    RA Indoor Unit SiBE18-821_C 3.1.10 ON TIMER Operation ON TIMER Operation To use ON TIMER operation • Check that the clock is correct. If not, set the clock to the present time. Press • “ ” is displayed on the LCD. •...
  • Page 197 SiBE18-821_C RA Indoor Unit 3.1.11 WEEKLY TIMER Operation WEEKLY TIMER Operation Up to 4 timer settings can be saved for each day of the week. It is convenient if the WEEKLY TIMER is set according to the family’s life style. Using in these cases of WEEKLY TIMER Example: The same timer settings are made for the week from Monday through Friday while different timer settings are made for the weekend.
  • Page 198 RA Indoor Unit SiBE18-821_C To use WEEKLY TIMER operation Setting mode • Make sure the day of the week and time are set. If not, set the day of the week and time. Program 1 Program 2 Program 3 Program 4 [Monday] 25˚C 27˚C...
  • Page 199 SiBE18-821_C RA Indoor Unit WEEKLY TIMER Operation Press to select the desired time. • The time can be set between 0:00 and 23:50 in 10 minute intervals. • To return to the ON/OFF TIMER mode setting, press • Go to step when setting the OFF TIMER.
  • Page 200 RA Indoor Unit SiBE18-821_C Copy mode • A reservation made once can be copied to another day of the week. The whole reservation of the selected day of the week will be copied. Program 1 Program 2 Program 3 Program 4 [Monday] 25˚C 27˚C...
  • Page 201 SiBE18-821_C RA Indoor Unit WEEKLY TIMER Operation Confirming a reservation • The reservation can be confirmed. Setting Displays Normal Confirmation Press • The day of the week and the reservation number of the current day will be displayed. Press to select the day of the week and the reservation number to be confirmed.
  • Page 202 RA Indoor Unit SiBE18-821_C To delete reservations The individual reservation Press The day of the week and the reservation number will be displayed. Press to select the day of the week and the reservation number to be deleted. Press blink. Press and select “...

  • Page 203: Note For Multi System

    SiBE18-821_C RA Indoor Unit 3.1.12 Note for Multi System Note for Multi System Multi system has one outdoor unit connected to multiple indoor units. Selecting the operation mode When more than one indoor unit is operating, priority is given to A room B room the first unit that was turned on.

  • Page 204: Ftxs-G, Fvxs Series - Arc452A1, A3

    RA Indoor Unit SiBE18-821_C FTXS-G, FVXS Series - ARC452A1, A3 3.2.1 Manual Contents and Reference Page Wall Mounted Type Floor Standing Type Model Series FTXS20-50G2V1B FTXS60/71GV1B FVXS25-50FV1B Read Before Operation Names of Parts Operation AUTO · DRY · COOL · HEAT · FAN Operation ★...
  • Page 205 SiBE18-821_C RA Indoor Unit 3.2.2 Names of Parts FTXS20/25/35/42/50G2V1B Names of parts Indoor Unit Operation Manual...
  • Page 206 RA Indoor Unit SiBE18-821_C Indoor Unit 12. Indoor Unit ON/OFF switch 1. Air filter • Push this switch once to start operation. 2. Titanium Apatite Photocatalytic Air- Push once again to stop it. Purifying Filter: • The operation mode refers to the following •...
  • Page 207 SiBE18-821_C RA Indoor Unit Remote Controller <Open the front cover> <ARC452A3> 11. SWING button: 1. Signal transmitter: • Vertical blades (louvers) • It sends signals to the indoor unit. 2. Display: 12. COMFORT/SENSOR button: • COMFORT AIRFLOW and INTELLIGENT • It displays the current settings. (In this illustration, each section is shown EYE operation with its displays ON for the purpose of...

  • Page 208: Names Of Parts

    RA Indoor Unit SiBE18-821_C FTXS60/71GV1B Names of Parts Indoor Unit Operation Manual...
  • Page 209 SiBE18-821_C RA Indoor Unit Indoor Unit 1. Air filter 13. Indoor Unit ON/OFF switch • Push this switch once to start operation. 2. Titanium Apatite Photocatalytic Air- Push once again to stop it. Purifying Filter: • The operation mode refers to the following •...

  • Page 210: Names Of Parts

    RA Indoor Unit SiBE18-821_C Names of Parts Remote Controller <Open the front cover> <ARC452A3> 10. SWING button: 1. Signal transmitter: • It sends signals to the indoor unit. • Flaps (horizontal blades) 2. Display (LCD): 11. SWING button: • Louvers (vertical blades) •...

  • Page 211: Opening The Front Panel

    SiBE18-821_C RA Indoor Unit FVXS25/35/50FV1B Names of parts Indoor Unit Opening the Front Panel Air outlet selection switch • This setting blows air from upper outlet only. This setting automatically decides a blow • pattern depending on mode and conditions. •...
  • Page 212 RA Indoor Unit SiBE18-821_C Indoor Unit 1. Titanium Apatite Photocatalytic Air- • The operation mode refers to the following table. Purifying Filter: Temperature Airflow • These filters are attached to the inside Model Mode setting rate of the air filters. COOLING 2.
  • Page 213 SiBE18-821_C RA Indoor Unit Remote Controller <Open the lid> <ARC452A1> 1. Signal transmitter: 9. ECONO button: • It sends signals to the indoor unit. ECONO operation 10. SWING button: 2. Display: • Adjusting the Airflow Direction • It displays the current settings. 11.
  • Page 214 RA Indoor Unit SiBE18-821_C 3.2.3 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 215: To Change The Airflow Rate Setting

    SiBE18-821_C RA Indoor Unit To change the airflow rate setting 5. Press “FAN setting button”. DRY mode AUTO or COOL or HEAT or FAN mode Five levels of airflow rate setting from “ ” to “ ” plus “ ” “ ”...

  • Page 216: Adjusting The Airflow Direction

    RA Indoor Unit SiBE18-821_C 3.2.4 Adjusting the Airflow Direction FTXS20/25/35/42/50G2V1B Adjusting the Airflow Direction You can adjust the airflow 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 217 SiBE18-821_C RA Indoor Unit To start 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 218 RA Indoor Unit SiBE18-821_C FTXS60/71GV1B Adjusting the Airflow Direction You can adjust the airflow direction to increase your comfort. To start auto swing Upper and lower airflow direction Press • “ ” is displayed on the LCD. • The flaps (horizontal blades) will begin to swing. Right and left airflow direction Press •...
  • Page 219 SiBE18-821_C RA Indoor Unit To set the flaps or louvers at desired position • This function is effective while flaps or louvers are in auto swing mode. Press when the flaps or louvers have reached the desired position. • In the 3-D airflow, the flaps and louvers move in turn. •...
  • Page 220 RA Indoor Unit SiBE18-821_C FVXS25/35/50FV1B Adjusting the Airflow Direction You can adjust the airflow direction to increase your comfort. To adjust the horizontal blade (flap) Press “SWING button ”. • “ ” is displayed on the LCD and the flaps will begin to swing. When the flap has reached the desired position, press “SWING button...
  • Page 221 SiBE18-821_C RA Indoor Unit aAirflow Airflow selection • Make airflow selection according to what suits you. When setting the airflow selection switch to • Air conditioner automatically decides the appropriate blowing pattern depending on the operating mode/situation. Operating mode Situation Blowing pattern •...

  • Page 222: Comfort Airflow And Intelligent Eye Operation

    RA Indoor Unit SiBE18-821_C 3.2.5 COMFORT AIRFLOW and INTELLIGENT EYE Operation FTXS20/25/35/42/50G2V1B COMFORT AIRFLOW and INTELLIGENT EYE Operation The INTELLIGENT EYE incorporates infrared sensors to detect the presence of people in the conditioned room. When these sensors detect people, the louvers will adjust the airflow direction to an area where people are not present.
  • Page 223 SiBE18-821_C RA Indoor Unit Notes on “COMFORT AIRFLOW Operation” • The flap position will change, preventing air from blowing directly on the occupants of the room. • POWERFUL operation and COMFORT AIRFLOW operation cannot be used at the same time. •...
  • Page 224 RA Indoor Unit SiBE18-821_C COMFORT AIRFLOW and INTELLIGENT EYE Operation Notes on “INTELLIGENT EYE Operation” • While the air conditioner is in INTELLIGENT EYE operation, the louvers will adjust the airflow direction if there are people in the sensing areas of the INTELLIGENT EYE so that the leftward or rightward airflow will not be directed to the people.
  • Page 225 SiBE18-821_C RA Indoor Unit FTXS60/71GV1B COMFORT AIRFLOW and INTELLIGENT EYE Operation COMFORT AIRFLOW operation The flow of air will be in the upward direction while in COOL operation and in the downward direction while in HEAT operation, which will provide a comfortable wind that will not come in direct contact with people.
  • Page 226 RA Indoor Unit SiBE18-821_C To start operation Press and select the desired mode. • Each time the is pressed a different setting option is displayed on the LCD. • By selecting “ ” from the following icons, the air conditioner will be in COMFORT AIRFLOW operation combined with INTELLIGENT EYE operation.
  • Page 227 SiBE18-821_C RA Indoor Unit COMFORT AIRFLOW and INTELLIGENT EYE Operation NOTE Notes on COMFORT AIRFLOW operation • The flap position will change, preventing air from blowing directly on the occupants of the room. • POWERFUL operation and COMFORT AIRFLOW operation cannot be used at the same time.
  • Page 228 RA Indoor Unit SiBE18-821_C 3.2.6 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.
  • Page 229 SiBE18-821_C RA Indoor Unit 3.2.7 OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET 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 QUIET operation 1.
  • Page 230 RA Indoor Unit SiBE18-821_C 3.2.8 ECONO Operation ECONO Operation ECONO operation is a function which enables efficient operation by limiting the maximum power consumption value. This function is useful for cases in which attention should be paid to ensure a circuit breaker will not trip when the product runs alongside other appliances.

  • Page 231: Timer Operation

    SiBE18-821_C RA Indoor Unit 3.2.9 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 operation •...
  • Page 232 RA Indoor Unit SiBE18-821_C To use ON TIMER operation • Check that the clock is correct. If not, set the clock to the present time. 1. Press “ON TIMER button”. is displayed. blinks. Press “SELECT button” until the time setting reaches the point you like.
  • Page 233 SiBE18-821_C RA Indoor Unit 3.2.10 WEEKLY TIMER Operation WEEKLY TIMER Operation Up to 4 timer settings can be saved for each day of the week. It is convenient if the WEEKLY TIMER is set according to the family’s life style. Using in these cases of WEEKLY TIMER An example of WEEKLY TIMER settings is shown below.
  • Page 234 RA Indoor Unit SiBE18-821_C To use WEEKLY TIMER operation Setting mode • Make sure the day of the week and time are set. If not, set the day of the week and time. Program 1 Program 2 Program 3 Program 4 [Monday] 25˚C 27˚C...
  • Page 235 SiBE18-821_C RA Indoor Unit WEEKLY TIMER Operation Press “SELECT button” to select the desired temperature. • The temperature can be set between 10˚C and 32˚C. • Cooling: The unit operates at 18˚C even if it is set at 10 to 17˚C. Heating: The unit operates at 30˚C even if it is set at 31 to 32˚C.
  • Page 236 RA Indoor Unit SiBE18-821_C Copy mode • A reservation made once can be copied another day of the week. The whole reservation of the selected day of the week will be copied. Program 1 Program 2 Program 3 Program 4 [Monday] 25˚C 27˚C...
  • Page 237 SiBE18-821_C RA Indoor Unit WEEKLY TIMER Operation Confirming a reservation • The reservation can be confirmed. Press “ button”. • The day of the week and the reservation number of the current day will be displayed. Press “SELECT button” to select the day of the week and the reservation number to be confirmed.
  • Page 238 RA Indoor Unit SiBE18-821_C 3.2.11 Note for Multi System Note for Multi System 〈〈 〉〉 What is a “Multi System”? This system has one outdoor unit connected to multiple indoor units. room room Outdoor unit room room Living Living Selecting the operation mode room room When more than one indoor unit is operating, priority...

  • Page 239: Ftxg-E, Ctxg-E, Ftxs-F, Flxs, Fdxs Series

    SiBE18-821_C RA Indoor Unit FTXG-E, CTXG-E, FTXS-F, FLXS, FDXS Series - ARC433B41, B67, B69, B70 3.3.1 Manual Contents and Reference Page Floor/Ceiling Wall Mounted Type Duct Connected Type Suspended Dual Type Model Series FTXG25/35EV1BW(S) FDXS25/35EAVMB FTXS60/71FV1B FLXS25-60BAVMB CTXG50EV1BW(S) FDXS50/60CVMB Read Before Operation Remote Controller Operation AUTO, DRY, COOL, HEAT, FAN...
  • Page 240 RA Indoor Unit SiBE18-821_C 3.3.2 Remote Controller FTXG25/35EV1BW(S), CTXG50EV1BW(S) Remote Controller < ARC433B41 > 1. Signal transmitter: 8. QUIET button: OUTDOOR UNIT QUIET operation • It sends signals to the indoor unit. 9. FAN setting button: 2. Display: • It selects the air flow rate setting. •...
  • Page 241 SiBE18-821_C RA Indoor Unit FTXS60/71FV1B Remote Controller < > ARC433B70, 71 1. Signal transmitter: 8. QUIET button: OUTDOOR UNIT QUIET • It sends signals to the indoor unit. operation 2. Display: 9. FAN setting button: • It displays the current settings. •...
  • Page 242 RA Indoor Unit SiBE18-821_C FLXS25/35/50/60BAVMB Remote Controller < ARC433B67, B68 > 1. Signal transmitter: 7. MODE selector button: • It sends signals to the indoor unit. • It selects the operation mode. 2. Display: (AUTO/DRY/COOL/HEAT/FAN) • It displays the current settings. 8.
  • Page 243 SiBE18-821_C RA Indoor Unit FDXS25/35EAVMB, FDXS50/60CVMB Remote Controller < ARC433B69, B76 > 1. Signal transmitter: 7. MODE selector button: • It sends signals to the indoor unit. • It selects the operation mode. 2. Display: (AUTO/DRY/COOL/HEAT/FAN) • It displays the current settings. 8.
  • Page 244 RA Indoor Unit SiBE18-821_C 3.3.3 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 245: To Change The Air Flow Rate Setting

    SiBE18-821_C RA Indoor Unit To change the air flow rate setting 5. Press “FAN setting button”. DRY mode AUTO or COOL or HEAT or FAN mode Five levels of air flow rate setting from “ ” to “ ” plus “ ”...

  • Page 246: Adjusting The Air Flow Direction

    RA Indoor Unit SiBE18-821_C 3.3.4 Adjusting the Airflow Direction FTXG25/35EV1BW(S), CTXG50EV1BW(S) 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 ”. • “ ”...
  • Page 247 SiBE18-821_C RA Indoor Unit To start COMFORT AIRFLOW operation 5. Press “COMFORT AIRFLOW button”. • The flap orientation 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 248 RA Indoor Unit SiBE18-821_C FTXS60/71FV1B Adjusting the Airflow 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 and the flaps will begin to swing.
  • Page 249 SiBE18-821_C RA Indoor Unit 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 250 RA Indoor Unit SiBE18-821_C FLXS25/35/50/60BAVMB Adjusting the Airflow 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 and the flaps will begin to swing.
  • Page 251 SiBE18-821_C RA Indoor Unit To adjust the vertical blades (louvers) • When adjusting the louver, use a robust and stable stool and watch your steps carefully. Hold the knob and move the louvers. (You will find a knob on the left side and the right side blades.) Notes on flap and louvers angles.
  • Page 252 RA Indoor Unit SiBE18-821_C 3.3.5 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 before POWERFUL operation.
  • Page 253 SiBE18-821_C RA Indoor Unit 3.3.6 OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET 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 QUIET operation 1.
  • Page 254 RA Indoor Unit SiBE18-821_C 3.3.7 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”. •...
  • Page 255 SiBE18-821_C RA Indoor Unit 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 256 RA Indoor Unit SiBE18-821_C 3.3.8 INTELLIGENT EYE Operation FTXG25/35EV1BW(S), CTXG50EV1BW(S) 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. To cancel the INTELLIGENT EYE operation...
  • Page 257 SiBE18-821_C RA Indoor Unit “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 258 RA Indoor Unit SiBE18-821_C FTXS60/71FV1B 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. To cancel the INTELLIGENT EYE operation 2.
  • Page 259 SiBE18-821_C RA Indoor Unit “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 260 RA Indoor Unit SiBE18-821_C 3.3.9 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 operation •...

  • Page 261: To Use On Timer Operation

    SiBE18-821_C RA Indoor Unit To use ON TIMER operation • Check that the clock is correct. If not, set the clock to the present time. 1. Press “ON TIMER button”. is displayed. blinks. Press “TIMER Setting button” until the time setting reaches the point you like.
  • Page 262 RA Indoor Unit SiBE18-821_C 3.3.10 Note for Multi System Note for Multi System 〈〈 〉〉 What is a “Multi System”? This system has one outdoor unit connected to multiple indoor units. room Outdoor unit Selecting the Operation Mode room Living When more than one indoor unit is operating, priority is room given to the first unit that was turned on.

  • Page 263: Sa Indoor Unit - Ffq, Fcq, Fdbq, Fbq, Fhq Series

    SiBE18-821_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series 4. SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series BRC1D528 23 7 Operation Manual...
  • Page 264 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE18-821_C Start Operation Manual...
  • Page 265 SiBE18-821_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series BRC1D528 Remote controller Operation manual 1. Features and functions THANK YOU FOR PURCHASING THIS The BRC1D528 is a state of the art remote controller CONTROLLER. READ MANUAL that offers full control over your installation. ATTENTIVELY BEFORE USING...
  • Page 266 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE18-821_C LEAVE HOME AIR CLEANING ICON T h e l e a v e h o m e f u n c t i o n p r e v e n t s t h e r o o m This icon indicates that the air cleaning unit (option) temperature from dropping when the occupants are is operational.
  • Page 267 SiBE18-821_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series MAXTEMPERATURE IMUM SET NOT AVAILABLE maximum temperature indicates is displayed whenever a non-installed option maximum set temperature when in limit operation. is addressed or a function is not available. MINIMUM SET TEMPERATURE FAN SPEED ICON The minimum set temperature indicates the minimum...
  • Page 268 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE18-821_C SCHEDULE TIMER BUTTON AIR FILTER CLEANING TIME ICON RESET BUTTON This button enables or disables the schedule timer. This button is used to reset the air filter cleaning time TIME ADJUST BUTTON icon.
  • Page 269 SiBE18-821_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series 4. Description of the operation modes Defrost (heat pump types only) In heating operation, freezing of the outdoor heat FAN ONLY OPERATION exchanger may occur. If so, the heating capacity of the system lowers and the system goes into defrost In this mode, air only circulates without heating or cooling.
  • Page 270 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE18-821_C Use the button to select the desired operation AUTOMATIC OPERATION mode. User adjustable parameters: • Setpoint temperature, use the & Fan only operation buttons, Dry operation • Fan speed, use the button, Automatic operation •...
  • Page 271 SiBE18-821_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series ADDITIONAL FEATURES OF THE CONTROLLER NOTE The schedule timer overrules the LEAVE HOME button, only use the button to enable or disable the schedule timer. The Press buttons schedule timer is enabled when the simultaneously to enable the LEAVE HOME function.
  • Page 272 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE18-821_C What can the schedule timer do? • switch off the installation (the schedule timer The concept of the schedule timer is simple, remains enabled and reactivates the straightforward though powerful. installation as programmed);...
  • Page 273 SiBE18-821_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series button is used to exit browsing at once Continue pressing the button until the day of the (without having to scroll through all programmed week indicator displays the current day (not blinking), actions).
  • Page 274 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE18-821_C Programmed actions might overlap; due to the "last Getting started command overrules" logic, the last scheduled Programming the schedule timer is flexible (you can command will rule. add, remove or alter programmed actions whenever required) and straightforward (programming steps are limited to a minimum).
  • Page 275 SiBE18-821_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series Programming In this particular case, no actions have been programmed before, all schedule timer actions are idle. • Browse to Monday by pressing the button. THE SCHEDULE TIMER IS PROGRAMMED icon appears, will blink and one of FOR THE FIRST TIME...
  • Page 276 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE18-821_C If the action and the corresponding time are correct, Program mode is quit and depending on the choice you can proceed to the second schedule timer action. made, the programmed actions are saved for Monday This is done by pressing the button, the data is (and possibly Tuesday).
  • Page 277 SiBE18-821_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series I WANT TO DELETE ONE OR MORE 8. Troubleshooting PROGRAMMED ACTIONS The guidelines below might help to solve your Make sure you are not in program mode ( problem. If you cannot remedy the problem, consult blinking);...

  • Page 278: Brc1E51A7

    SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE18-821_C BRC1E51A7 Names and Functions 1. 1. Operation mode selector button 11. LCD (with backlight) 4. Up button 5. Down button 6. Right button 7. Left button 9. Operation lamp 8.
  • Page 279 SiBE18-821_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series 1. Operation mode selector button 7. Left button (Be sure to press the part with the symbol ) • Press this button to select the operation mode of your preference. (See page 14.) •...

  • Page 280: Names And Functions

    SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE18-821_C Names and Functions Liquid Crystal Display • Two types of liquid crystal display (LCD) are available. The standard display is by default set. • To go to the detailed display, select the detailed display in the main menu. (See page 46.) •...

  • Page 281: Automatic Operation Mode

    SiBE18-821_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series 1. Operation mode “Error: Press Menu Button.” “Warning: Press Menu Button.” • Used to display the present operation • Displayed if the error or warning is detected mode Cool, Heat, Vent, Fan, Dry or Auto (see page 53).
  • Page 282 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE18-821_C Names and Functions 12. Home leave “ ” (See page 19.) • The home leave icon shows the status of the home leave function. Home leave is enabled FLASHING Home Leave is active Home Leave is disabled 13.

  • Page 283: Basic Operation Method

    SiBE18-821_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series Basic Operation Method (Use of Direct Buttons) Cool/Heat/Auto/Fan Operation (SkyAir and VRV) Operation procedure Operation button Remote Controller Functions display Explains a button operation procedure for the remote controller. Displays the positions of Operate the buttons according to buttons to be operated.
  • Page 284 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE18-821_C • Press On/Off button. The Operation lamp (green) will be lit and the system will start operating. • The set temperature will increase by 1°C when button is pressed and decrease by 1°C when button is pressed.
  • Page 285 SiBE18-821_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series Basic Operation Method (Use of Direct Buttons) • The Operation lamp will be turned OFF and the system will stop operating when On/Off button is pressed again. * While the system is in heating operation, the system will be in fan operation for approximately one minute in order to eliminate the heat in the indoor unit after the heating operation comes to a stop.
  • Page 286 • If the hot air stays around the ceiling and your feet feel cold, the use of a circulator is recommended. For details, consult your Daikin dealer. Program Dry Operation Preparation •...
  • Page 287 SiBE18-821_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series Basic Operation Method (Use of Direct Buttons) • Press On/Off button. The Operation lamp (green) will be lit and the system will start operating. * The microcomputer is in automatic temperature and fan speed control.

  • Page 288: Program Dry

    SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE18-821_C Operation Contents Program Dry The Program dry function of the system repeats the weak cooling operation of the system intermittently to dehumidify the room without dropping the room temperature as much as possible for the prevention of excessive cooling.
  • Page 289 SiBE18-821_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series Basic Operation Method (Use of Direct Buttons) Ventilation Operation When Air Conditioner Interlocked with Total Heat Exchanger Preparation • For mechanical protection purposes, turn ON the system at least six hours before starting the operation of the system.
  • Page 290 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE18-821_C Setting Method of the Cooling/Heating Selection Eligibility (VRV only) Setting Changes See page 22 for an explanation of the cooling/heating selection eligibility. • Continue pressing Operation Mode Selector button of the remote controller for at least four seconds.
  • Page 291 SiBE18-821_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series Basic Operation Method (Use of Direct Buttons) Operation Selection • Press the remote controller that has the cooling/heating selection eligibility (or the remote controller without the display “ ” (Changeover under control)) several times until the desired mode is selected.

  • Page 292: Key Lock

    SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE18-821_C Precautions for Setting Cooling/Heating Selection Eligibility • The cooling/heating selection eligibility needs to be set for a single remote controller in the following case. (Cooling/Heating selected operation system) (Cooling/Heating simultaneous operation system) BS unit: The BS unit is used for cooling or heating mode selection.
  • Page 293 SiBE18-821_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series Quick Reference of Main Menu Items The main menu has the following items. Setting and display items Description Reference page Select normal set temperature or limit control. Set temp mode changeover Used to make airflow direction settings.
  • Page 294 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE18-821_C Setting and display item Description Reference page Used to make LCD contrast adjustment. Contrast adjustment Convenient functions Used to set to standard or detailed display Display changeover mode. Standard or detailed display •...
  • Page 295 SiBE18-821_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series Menu Manipulation Manipulating the Main Menu Screen Display Method for Main Menu Operation Method • Press Menu/Enter button. Basic screen • The main menu screen will appear. Instructions for manipulating the buttons will appear.
  • Page 296 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE18-821_C Set temp mode changeover Limit Operation Limit operation provides thermostat control within the range of the set minimum and maximum temperature. The minimum temperature setting will trigger heating. The maximum temperature setting will trigger cooling. Operation Method The limit operation can not be enabled when a centralized control is connected.
  • Page 297 SiBE18-821_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series Menu Manipulation Airflow Direction Setting Manipulating Airflow Direction Setting Operation Method • Display the main menu screen. (See page 26.) • Press buttons to select on the main menu screen and press the Menu/Enter button.
  • Page 298 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE18-821_C • Pressing buttons changes the setting to (in order) Position 0 Position 1 Up/down direction Position 2 Position 3 , and Position 4 • Selecting will cause the airflow direction blades to swing back and forth.

  • Page 299: Airflow Direction

    SiBE18-821_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series Menu Manipulation Operational Details and Functions There are two types of airflow direction setting. Airflow direction swing Airflow direction The airflow direction blades automatically You can select from one of five fixed swing up and down.
  • Page 300 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE18-821_C Quick Cooling/Heating On/Off Quick Cooling/Heating On Operation Method • While operating in Cooling, Heating, or Auto mode, display the main menu screen (see page 26) • Press buttons to select on the main menu screen.
  • Page 301 SiBE18-821_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series Menu Manipulation Quick Cooling/Heating The indoor unit is automatically controlled, increasing the power of the Quick Cooling/Heating outdoor unit and quickly bringing the room to a comfortable temperature. • Fan speed display goes off and fan speed can no longer be switched. •...
  • Page 302 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE18-821_C • Pressing buttons changes the setting to in order * Only modes that can be set are displayed. High • Selecting the desired ventilation rate and pressing Menu/Enter button selects the setting and takes you back to the basic screen.

  • Page 303: Ventilation Mode

    SiBE18-821_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series Menu Manipulation • Selecting the desired ventilation mode and pressing Menu/Enter button enters the settings and takes you back to the basic screen. (Pressing the Cancel button takes you back to the previous screen without changing the ventilation mode.
  • Page 304 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE18-821_C Setting the schedule timer Display method for the schedule timer settings screen Operation Method The schedule timer can not be enabled when a centralized control is connected. • Bring up the timer settings screen. (See page 34.) •...

  • Page 305: Schedule Timer

    SiBE18-821_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series Menu Manipulation Schedule timer Condition setting Operation Method • Display the schedule timer settings screen. (See page 35.) • Press buttons to select on the schedule timer settings screen. Press Menu/Enter button to display the condition setting screen.
  • Page 306 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE18-821_C • Press buttons to move the highlighted item and press buttons to select the desired operation. The following three types of operations are available. *1. switch on the installation at a scheduled time, in combination with a set point (exact temperature control) *2.
  • Page 307 SiBE18-821_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series Menu Manipulation • To make limit operation settings, press buttons to move the highlighted item and press buttons to input the desired set time. • Press buttons to move the highlighted item and press buttons to set the operation to...
  • Page 308 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE18-821_C • To make operation stop settings, press buttons to move the highlighted item and press buttons to input the desired operation stop time. • Press buttons to move the highlighted item and press buttons to turn...

  • Page 309: Holiday Setting

    SiBE18-821_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series Menu Manipulation Holiday setting (The schedule timer will be disabled for days that have been set as holiday.) Operation Method • Bring up the schedule timer settings screen. (See page 35.) •...
  • Page 310 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE18-821_C • Holiday that are set will be displayed on the condition settings screen. Enabling or disabling the schedule timer without changing the set day or time Operation Method • Bring up the schedule timer settings screen.
  • Page 311 SiBE18-821_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series Menu Manipulation Making and checking the off reminder timer settings Operation Method • Bring up the timer settings screen. (See page 34.) • Press buttons to select the on the timer settings screen.
  • Page 312 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE18-821_C Enabling or disabling the off reminder timer without changing the set time Operation Method • Bring up the off reminder timer settings screen. (See page 42.) • Press buttons to select on the off reminder timer settings screen.
  • Page 313 SiBE18-821_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series Menu Manipulation Service Contact/Model Information Display method for service contact and model information Operation Method • Display the main menu screen. (See page 26.) • Press buttons to select on the main menu screen and press Menu/ Enter button.

  • Page 314: Convenient Functions

    SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE18-821_C Convenient Functions Contrast Adjustment Operation Method • Display the main menu screen. (See page 26.) • Press buttons to select on the main menu screen. Press Menu/Enter button to display the convenient functions settings screen.
  • Page 315 SiBE18-821_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series Menu Manipulation Display chageover Display selection Operation Method • Bring up the convenient functions settings screen. (See page 45.) • Press buttons to select on the convenient functions settings screen. Press Menu/Enter button to display the display selection settings screen.
  • Page 316 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE18-821_C Setting the detailed display selection Operation Method Bring up the display selection settings • screen. (See page 46.) • Press buttons to select on the convenient functions settings screen. Press Menu/Enter button to display the detailed display selection screen.

  • Page 317: Clock Setting

    SiBE18-821_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series Menu Manipulation Setting Status List Manipulating the setting status list Operation Method • Display the main menu screen. (See page 26.) • Press buttons to select on the main menu screen and press Menu/Enter button.
  • Page 318 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE18-821_C Select “Year” with buttons. • Input the year with buttons. Holding down the button causes the number to change continuously. • Select “Month” with buttons. Input the month with buttons.
  • Page 319 Caution : The following period has adopted Daylight Saving Timer. [Start] Last Sunday, March AM 2:00 [End] Last Sunday, October AM 3:00 Please consult with your Daikin dealer to change a setup. Language changeover Selectable languages Operation Method • Display the main menu screen.
  • Page 320 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE18-821_C • Press buttons to select “Language” on the language changeover screen. English/Deutsch/Français/Español/ Italiano/ Portugues/ • Pressing Menu/Enter button to confirm settings and return to the basic screen. Maintenance Filter Sign Resetting Operation Method •...
  • Page 321 SiBE18-821_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series Maintenance Press buttons to select • on the main menu screen and press Menu/Enter button. The display shown in 1 will disappear • from the basic screen when the filter sign is reset.

  • Page 322: Useful Information

    SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE18-821_C Useful Information Error code Display Contact your Daikin dealer in the following cases Warning • When the air conditioner is malfunctioning (e.g., giving off a burning odor), stop the air conditioner and turn off power.

  • Page 323: Brc7E530W, Brc7F532F, Brc7Ea63W

    SiBE18-821_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series BRC7E530W, BRC7F532F, BRC7EA63W ★ The illustrations of indoor unit are for FFQ model as representative. (10) (11) (13) (12) (15) (14) (16) (17) COOL/HEAT CHANGEOVER REMOTE CONTROL SWITCH (21) (20) (22) (23) (19) (24)
  • Page 324 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE18-821_C NAMES AND FUNCTIONS DISPLAY “ ” OF THE OPERATING (INSPECTION/ TEST OPERATION) SECTION (Fig. 1, 2) When the INSPECTION/TEST OPERATION BUTTON is pressed, the display shows the system mode is in. DISPLAY “...
  • Page 325 SiBE18-821_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series RECEIVER HANDLING FOR This receives the signals from the WIRELESS REMOTE remote controller. CONTROLLER OPERATING INDICATOR LAMP (Red) Precautions in handling remote controller This lamp stays lit while the air Direct the transmitting part of the remote conditioner runs.

  • Page 326: Operation Range

    Slide from above Pull it upward it is necessary to switch the remote controller’s setting. In this case, contact your DAIKIN dealer. 4. OPERATION RANGE SKYAIR System If the temperature or the humidity is beyond the following conditions, safety devices may work...

  • Page 327: Operation Procedure

    • This system does not go into operation • Operating procedure varies with heat if the room temperature is below 16°C. pump type and cooling only type. Contact your Daikin dealer to confirm your system type. ON/OFF • To protect the unit, turn on the main power switch 6 hours before operation.
  • Page 328 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE18-821_C • Hot air is circulated to warm the room. It FAN OPERATION...... “ ” will take some time from when the air conditioner is first started until the entire DRY OPERATION.....
  • Page 329 UP AND DOWN DIRECTION flaps blow horizontally to • The movable limit of the flap is changeable. avoid blowing cold air Contact your Daikin dealer for details. directly on the occupants of the room.) NOTES • If you try cooling or programmed...
  • Page 330 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE18-821_C NOTES TIMER MODE START/ • When the timer is programmed to stop STOP the system after 3 hours and start the system after 4 hours, the system will Press the TIMER MODE START/STOP stop after 3 hours and then 1 hour later button several times and select the the system will start.
  • Page 331 SiBE18-821_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series For Heat recovery system When one BS unit is connected with several indoor units. Continuously press the OPERATION MODE SELECTOR button for 4 seconds. Outdoor unit The displays showing of all slave indoor unit connected to the same outdoor unit or BS unit...
  • Page 332 TROUBLE SPOTS NOTE I. EMERGENCY STOP • Contact your Daikin dealer in case of changing the combination or setting of When the air conditioner stops in emergency, group control and two remote the run lamp on the indoor unit starts blinking.
  • Page 333 SiBE18-821_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series Press OPERATION MODE SELECTOR Press the INSPECTION/TEST button BUTTON to select the inspection mode “ ”. “ ” on the right-hand of the malfunction “ ” appears on display and blinks. “UNIT” code blinks.
  • Page 334 Notify and inform the model name and what as 1 ) the malfunction code indicates to your Daikin The system operates but it does not dealer. sufficiently cool or heat.

  • Page 335: Part 8 Troubleshooting

    SiBE18-821_C Part 8 Troubleshooting 1. Troubleshooting with LED ..............325 1.1 Outdoor Unit ..................325 1.2 BP Unit ....................330 1.3 Indoor Unit....................331 2. Service Check Function ..............334 2.1 RA Indoor Unit - F(C)TXG, FTXS, FVXS, FLXS, FDXS Series....334 2.2 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series......343 3.
  • Page 336 SiBE18-821_C 7.9 Outdoor Temperature Thermistor (R1T) Abnormality ......394 7.10 Discharge Pipe Thermistor (R2T) Abnormality........395 7.11 Suction Pipe Thermistor (R3T, R5T) Abnormality ........396 7.12 Outdoor Heat Exchanger Thermistor (R4T) Abnormality .....397 7.13 Outdoor Liquid Pipe Thermistor (R7T) Abnormality ......398 7.14 Subcooling Heat Exchanger Gas Pipe Thermistor (R6T) Abnormality ...................399 7.15 High Pressure Sensor Abnormality ............400 7.16 Low Pressure Sensor Abnormality ............401...

  • Page 337: Troubleshooting With Led

    SiBE18-821_C Troubleshooting with LED 1. Troubleshooting with LED Outdoor Unit 1.1.1 Main PCB (A1P) The main PCB (A1P) has a green LED (HAP). When the microcomputer works in order, the LED blinks. (R13068) 1.1.2 Service PCB (A2P) The service PCB (A2P) has orange LEDs (H1P ~ H7P). You can identify the error code with these LEDs in monitor mode.
  • Page 338 Troubleshooting with LED SiBE18-821_C Error code indication in monitor mode <Monitor mode> To enter the monitor mode, push the Contents of malfunction Error code MODE (BS1) button when in Outdoor unit PCB abnormality Detection of DIII-Net “Setting mode 1”. Actuation of high pressure switch High pressure switch activated (S1PH) Actuation of low pressure switch Abnormal Pe...
  • Page 339 SiBE18-821_C Troubleshooting with LED k : ON h : OFF l : Blink Confirmation of malfunction 1 Confirmation of malfunction 2 Confirmation of malfunction 3 Confirmation of malfunction 4 Error code H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P ∗...
  • Page 340 Troubleshooting with LED SiBE18-821_C <Monitor mode> Contents of malfunction Error code To enter the monitor mode, push the MODE (BS1) button when in High voltage of capacitor in main Imbalance of inverter power supply “Setting mode 1”. inverter circuit voltage Radiation fin thermistor abnormality Faulty thermistor of inverter fin Low pressure drop due to refrigerant...
  • Page 341 SiBE18-821_C Troubleshooting with LED k : ON h : OFF l : Blink Confirmation of malfunction 1 Confirmation of malfunction 2 Confirmation of malfunction 3 Confirmation of malfunction 4 Error code H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P ∗...

  • Page 342: Bp Unit

    Troubleshooting with LED SiBE18-821_C BP Unit : ON, : OFF, : Blinks, —: No matter Green : Blinks in normal condition Red : OFF in normal condition BP Unit LED Indication Description Green Normal condition Defective electronic expansion valve or anti-icing control in non-operating indoor unit Defective thermistor Freeze-up protection control in operating indoor unit or standby indoor unit...

  • Page 343: Indoor Unit

    SiBE18-821_C Troubleshooting with LED Indoor Unit 1.3.1 Operation Lamp 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. 2. When a signal transmission error occurs between the indoor and outdoor units. In either case, conduct the diagnostic procedure described in the following pages.
  • Page 344 Troubleshooting with LED SiBE18-821_C Wall Mounted Type G-Series 60/71 Class Floor Standing Type Operation lamp (green) Operation lamp (green) (R11687) (R11689) Floor / Ceiling Suspended Dual Type Duct Connected Type Operation lamp (green) Operation lamp (green) (R11688) (Q0340) BRC1D528 Operation lamp (red) (R12851) Troubleshooting...
  • Page 345 SiBE18-821_C Troubleshooting with LED BRC1E51A7 Operation lamp (green) The error or warning message also blinks on the basic screen. (R12852) BRC7E530W, BRC7F532F, BRC7EA63W In case of wireless remote controller, a signal receiver PCB and a display PCB are installed on indoor unit.

  • Page 346: Service Check Function

    Service Check Function SiBE18-821_C 2. Service Check Function RA Indoor Unit - F(C)TXG, FTXS, FVXS, FLXS, FDXS Series 2.1.1 ARC466 Series Remote Controller 1. When the timer cancel button is held down for 5 seconds, “ 00 ” indication appears on the Check Method 1 temperature display section.
  • Page 347 SiBE18-821_C Service Check Function Check Method 2 1. Press the center of the Temp button and the Mode button at the same time. (R11669) “ 5C ” is displayed on the LCD. (R11821) 2. Select “ 5C ” (service check) with the Temp▲ or ▼ button. 3.
  • Page 348 Service Check Function SiBE18-821_C 6. Press the Mode button. (R11672) The figure of the one’s place blinks. (R11673) 7. Press the Temp ▲ or ▼ button and change the figure until you hear the sound of “beep”. (R11671) 8. Diagnose by the sound. ★...
  • Page 349 SiBE18-821_C Service Check Function 2.1.2 ARC452 Series Remote Controller 1. When the timer cancel button is held down for 5 seconds, “ 00 ” indication appears on the Check Method 1 temperature display section. TIMER CANCEL button < ARC452 Series > (R11385) 2.
  • Page 350 Service Check Function SiBE18-821_C Check Method 2 1. Press the 3 buttons (TEMP▲, TEMP▼, MODE) simultaneously to enter the diagnosis mode. (R8381) The figure of the ten’s place blinks. (R8382) 2. Press the TEMP▲ or ▼ button and change the figure until you hear the sound of “beep” or “pi pi”.
  • Page 351 SiBE18-821_C Service Check Function 5. Press the TEMP▲ or ▼ button and change the figure until you hear the sound of “beep”. (R8383) 6. Diagnose by the sound. ★ “pi” : The figure of the ten’s place does not accord with the error code. ★...
  • Page 352 Service Check Function SiBE18-821_C 2.1.3 ARC433 Series Remote Controller 1. When the timer cancel button is held down for 5 seconds, “ 00 ” indication appears on the Check Method 1 temperature display section. TIMER CANCEL button CANCEL TIMER < ARC433 Series > (R11506) 2.
  • Page 353 SiBE18-821_C Service Check Function Check Method 2 1. Press the center of the TEMP button and the MODE button simultaneously to enter the diagnosis mode. (R4272) The figure of the ten’s place blinks. (R4273) 2. Press the TEMP▲ or ▼ button and change the figure until you hear the sound of “beep” or “pi pi”.
  • Page 354 Service Check Function SiBE18-821_C 5. Press the TEMP▲ or ▼ button and change the figure until you hear the sound of “beep”. (R4277) 6. Diagnose by the sound. ★ “pi” : The figure of the ten’s place does not accord with the error code. ★...

  • Page 355: Sa Indoor Unit - Ffq, Fcq, Fdbq, Fbq, Fhq Series

    SiBE18-821_C Service Check Function SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series 2.2.1 Relations between Modes BRC1D528, BRC7E530W, BRC7F532F, BRC7EA63W The following modes can be selected by using the [Inspection / Test] button on the remote controller. Press the [Inspection / Test] button for more than 4 seconds.
  • Page 356 Service Check Function SiBE18-821_C BRC1E51A7 <Main Menu> • Set temp. mode changeover • Airflow direction • Quick Cool/Heat On/Off • Ventilation • Timer setting • Service Contact/Model Info • Convenient functions • Setting status list • Clock setting Main Menu screen •...
  • Page 357 SiBE18-821_C Service Check Function 2.2.2 BRC1D528 If operation stops due to malfunction, the operation lamp on the remote controller blinks, and error code is displayed. (Even if stop operation is carried out, malfunction contents are displayed when inspection mode is entered.) The error code enables you to tell what kind of malfunction caused operation to stop.
  • Page 358 Service Check Function SiBE18-821_C 2.2.3 BRC1E51A7 The following display appears on the screen when a error (or a warning) occurs during operation. Check the error code and take the corrective action specified for the particular model. Screen Operation lamp Menu/Enter button (R12856) (1) Check if it is error or warning.
  • Page 359 SiBE18-821_C Service Check Function 2.2.4 BRC7E530W, BRC7F532F, BRC7EA63W To find the error code, proceed as follows: Step Action Press the [Inspection / Test] button to enter the inspection mode. Then the figure “0” blinks on the UNIT No. display. [Inspection / Test] button (R11286) Press the UP or DOWN button and change the UNIT No.
  • Page 360 Service Check Function SiBE18-821_C Step Action Press the MODE button. The left “0” (upper digit) indication of the error code blinks. MODE button (R11288) Press the UP or DOWN button to change the error code upper digit until the receiver of the remote controller starts to beep.
  • Page 361 SiBE18-821_C Service Check Function Step Action Press the MODE button. The right “0” (lower digit) indication of the error code blinks. MODE button (R11290) Press the UP or DOWN button and change the error code lower digit until the receiver of the remote controller generates a continuous beep.

  • Page 362: Error Codes And Description

    Error Codes and Description SiBE18-821_C 3. Error Codes and Description Error code Description Reference page RA Indoor SA Indoor BP Unit Outdoor Unit Unit Unit Indoor Indoor unit PCB abnormality — — Unit Drain level control system abnormality — — —...
  • Page 363 SiBE18-821_C Error Codes and Description Error code Description Reference page RA Indoor SA Indoor BP Unit Outdoor Unit Unit Unit System Field setting switch abnormality — — — Excessive number of indoor units — — — Address duplication of central remote controller —...

  • Page 364: Troubleshooting For Ra Indoor Unit

    Troubleshooting for RA Indoor Unit SiBE18-821_C 4. Troubleshooting for RA Indoor Unit Indoor Unit PCB Abnormality Remote Controller Display Method of The system checks if the circuit works properly within the microcomputer of the indoor unit. Malfunction Detection Malfunction The system cannot set the internal settings. Decision Conditions Supposed...

  • Page 365: Freeze-Up Protection Control Or Heating Peak-Cut Control

    SiBE18-821_C Troubleshooting for RA Indoor Unit Freeze-up Protection Control or Heating Peak-cut Control Remote Controller Display Method of Freeze-up protection control During cooling operation, the freeze-up protection control (operation halt) is activated Malfunction according to the temperature detected by the indoor heat exchanger thermistor. Detection Heating peak-cut control During heating operation, the temperature detected by the indoor heat exchanger thermistor...
  • Page 366 Troubleshooting for RA Indoor Unit SiBE18-821_C Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.06 Check the air passage. Refer to P.361 Is there any short circuit? Provide sufficient air passage.

  • Page 367: Fan Motor Or Related Abnormality

    SiBE18-821_C Troubleshooting for RA Indoor Unit Fan Motor or Related Abnormality 4.3.1 AC Motor (Duct Connected Type, Floor / Ceiling Suspended Dual Type) Remote Controller Display Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor operation.
  • Page 368 Troubleshooting for RA Indoor Unit SiBE18-821_C 4.3.2 DC Motor (Wall Mounted Type, Floor Standing Type) Remote Controller Display Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor operation. Malfunction Detection Malfunction...
  • Page 369 SiBE18-821_C Troubleshooting for RA Indoor Unit Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.01 Turn off the power supply Refer to P.360 and rotate the fan by hand.

  • Page 370: Thermistor Or Related Abnormality (Indoor Unit)

    Troubleshooting for RA Indoor Unit SiBE18-821_C 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 The thermistor input is more than 4.96 V or less than 0.04 V during compressor operation. Decision Conditions Supposed...

  • Page 371: Front Panel Open / Close Fault

    SiBE18-821_C Troubleshooting for RA Indoor Unit Front Panel Open / Close Fault Remote Controller Display Method of Malfunction Detection Malfunction If the error repeats twice, the system is shut down. Decision Conditions Supposed Defective reduction motor Causes Malfunction or deterioration of the front panel mechanism Defective limit switch Troubleshooting Be sure to turn off the power switch before connecting or disconnecting...

  • Page 372: Fan Motor Connector Output Check

    Troubleshooting for RA Indoor Unit SiBE18-821_C Check for RA Indoor Unit 4.6.1 Fan Motor Connector Output Check Check No.01 1. Check the connection of connector. 2. Check motor power supply voltage output (pins 4 - 7). 3. Check motor control voltage (pins 4 - 3). 4.

  • Page 373: Thermistor Resistance Check

    SiBE18-821_C Troubleshooting for RA Indoor Unit 4.6.2 Thermistor Resistance Check Check No.06 Disconnect the connectors of the thermistors from 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 374: Hall Ic Check

    Troubleshooting for RA Indoor Unit SiBE18-821_C 4.6.3 Hall IC Check Check No.16 1. Check the connector connection. 2. With the power on, operation off, and the connector connected, check the following. ∗ Output voltage of about 5 V between pins 1 and 3. ∗...

  • Page 375: Troubleshooting For Sa Indoor Unit

    SiBE18-821_C Troubleshooting for SA Indoor Unit 5. Troubleshooting for SA Indoor Unit Indoor Unit PCB Abnormality Remote Controller Display Method of Check data from EEPROM. Malfunction Detection Malfunction When data could not be correctly received from the EEPROM EEPROM : Type of nonvolatile memory. Maintains memory contents even when the power Decision supply is turned off.

  • Page 376: Drain Water Level System Abnormality

    Troubleshooting for SA Indoor Unit SiBE18-821_C Drain Water Level System Abnormality Remote Controller Display Method of The float switch detects error. Malfunction Detection Malfunction When the water level reaches its upper limit and when the float switch turns OFF Decision Conditions Supposed Defective drain pump...
  • Page 377 SiBE18-821_C Troubleshooting for SA Indoor Unit Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Is the unit a ceiling suspended type? Is the optional drain raising mechanism connected? Is the short circuit connector Connect the short circuit...

  • Page 378: Fan Motor Or Related Abnormality (Fhq Series)

    Troubleshooting for SA Indoor Unit SiBE18-821_C Fan Motor or Related Abnormality (FHQ Series) Remote Controller Display Method of The signal from the fan motor detects abnormal fan speed. Malfunction Detection Malfunction When the fan rotations are not detected while the output voltage to the fan is at its maximum Decision Conditions Supposed...

  • Page 379: Swing Motor Lock (Fhq Series)

    SiBE18-821_C Troubleshooting for SA Indoor Unit Swing Motor Lock (FHQ Series) Remote Controller Display Method of The error is detected by the limit switch when the motor turns. Malfunction Detection Malfunction When the ON/OFF micro-switch for position detection cannot be reversed even though the swing motor is energized for a specified amount of time (about 30 seconds).

  • Page 380: Drain System Abnormality

    Troubleshooting for SA Indoor Unit SiBE18-821_C Drain System Abnormality Remote Controller Display Method of Water leakage is detected based on the float switch ON/OFF changeover while the compressor is not operating. Malfunction Detection Malfunction When the float switch changes from ON to OFF while the compressor is OFF Decision Conditions Supposed...

  • Page 381: Indoor Liquid Pipe Thermistor (R2T) Abnormality

    SiBE18-821_C Troubleshooting for SA Indoor Unit Indoor Liquid Pipe Thermistor (R2T) Abnormality Remote Controller Display Method of The temperature detected by indoor liquid pipe thermistor (R2T) Malfunction Detection Malfunction When the indoor liquid pipe thermistor becomes disconnected or shorted while the indoor unit is running.

  • Page 382: Indoor Heat Exchanger Thermistor (R3T) Abnormality

    Troubleshooting for SA Indoor Unit SiBE18-821_C Indoor Heat Exchanger Thermistor (R3T) Abnormality Remote Controller Display Method of The temperature detected by indoor heat exchanger thermistor (R3T) Malfunction Detection Malfunction When the indoor heat exchanger thermistor becomes disconnected or shorted while the indoor unit is running.

  • Page 383: Suction Air Thermistor (R1T) Abnormality

    SiBE18-821_C Troubleshooting for SA Indoor Unit Suction Air Thermistor (R1T) Abnormality Remote Controller Display Method of The temperature detected by suction air thermistor (R1T) Malfunction Detection Malfunction When the suction air thermistor becomes disconnected or shorted while the indoor unit is running.

  • Page 384: Remote Controller Thermistor Abnormality

    Troubleshooting for SA Indoor Unit SiBE18-821_C Remote Controller Thermistor Abnormality Remote Controller Display Method of Even if remote controller thermistor is faulty, system is possible to operate by system thermistor. Malfunction Malfunction detection is carried out by the temperature detected by remote controller thermistor. Detection Malfunction When the remote controller thermistor becomes disconnected or shorted while the unit is...

  • Page 385: Transmission Error Between Remote Controller And Indoor Unit

    SiBE18-821_C Troubleshooting for SA Indoor Unit 5.10 Transmission Error between Remote Controller and Indoor Unit Remote Controller Display 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 386: Transmission Error Between Main And Sub Remote Controllers

    Troubleshooting for SA Indoor Unit SiBE18-821_C 5.11 Transmission Error between Main and Sub Remote Controllers Remote Controller Display Method of In case of controlling with 2 remote controllers, check the system using microcomputer if signal transmission between indoor unit and remote controller (main and sub) is normal. Malfunction Detection Malfunction...

  • Page 387: Field Setting Switch Abnormality

    SiBE18-821_C Troubleshooting for SA Indoor Unit 5.12 Field Setting Switch Abnormality Remote Controller Display Method of Malfunction Detection Malfunction Incorrect field setting Decision Conditions Supposed Incorrect wiring between indoor unit and BP unit Incorrect wiring of remote controller Causes Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged.

  • Page 388: Troubleshooting For Bp Unit

    Troubleshooting for BP Unit SiBE18-821_C 6. Troubleshooting for BP Unit Electronic Expansion Valve Abnormality Remote Controller Display Method of Detection by checking continuity and lack of connector Malfunction Detection Malfunction No voltage applied when turning the power supply on Decision Conditions Supposed Broken harness of electronic expansion valve coil...

  • Page 389: Bp Unit Pcb Abnormality

    SiBE18-821_C Troubleshooting for BP Unit BP Unit PCB Abnormality Remote Controller Display Method of Check data from EEPROM Malfunction Detection Malfunction When data could not be correctly received from the EEPROM EEPROM : Type of nonvolatile memory. Maintains memory contents even when the power Decision supply is turned off.

  • Page 390: Bp Liquid Or Gas Pipe Thermistor Abnormality

    Troubleshooting for BP Unit SiBE18-821_C BP Liquid or Gas Pipe Thermistor Abnormality Remote Controller Display Method of Malfunction Detection Malfunction When the BP liquid or gas pipe thermistor became short circuited or open. Decision Conditions Supposed Defective BP liquid or gas pipe thermistor Causes Incorrect connection of BP liquid or gas pipe thermistor Troubleshooting...

  • Page 391: Transmission Error Between Indoor Unit And Bp Unit

    SiBE18-821_C Troubleshooting for BP Unit Transmission Error between Indoor Unit and BP Unit Outdoor Unit Indication Method of The data received from the BP unit in signal transmission is checked whether it is normal. Malfunction Detection Malfunction When the data sent from the BP unit cannot be received normally, or when the content of the data is abnormal.
  • Page 392 Troubleshooting for BP Unit SiBE18-821_C Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.14 Push and hold the RESET Refer to P.382 button on the outdoor unit PCB for 5 seconds Does the malfunction occur...

  • Page 393: Transmission Error Between Outdoor Unit And Bp Unit

    SiBE18-821_C Troubleshooting for BP Unit 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 correctly. Malfunction Detection Malfunction When the data from BP unit could not be correctly received continuously for 10 minutes Decision Conditions Supposed...

  • Page 394: Power Supply Waveforms Check

    Troubleshooting for BP Unit SiBE18-821_C Check for BP Unit 6.6.1 Power Supply Waveforms Check Check No.14 Measure the power supply waveform between the 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 395: Troubleshooting For Outdoor Unit

    SiBE18-821_C Troubleshooting for Outdoor Unit 7. Troubleshooting for Outdoor Unit Outdoor Unit PCB Abnormality Remote Controller Display Method of Check data from EEPROM Malfunction Detection Malfunction When data could not be correctly received from the EEPROM EEPROM: Type of nonvolatile memory. Maintains memory contents even when the power Decision supply is turned off.

  • Page 396: Actuation Of High Pressure Switch

    Troubleshooting for Outdoor Unit SiBE18-821_C Actuation of High Pressure Switch Remote Controller Display Method of Abnormality is detected when the contact of the high pressure switch opens. Malfunction Detection Malfunction When the high pressure switch activation count reaches the number specific to the operation mode Decision (Reference) Operating pressure of high pressure switch...
  • Page 397 SiBE18-821_C Troubleshooting for Outdoor Unit Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.01 Check for the points shown below. Refer to P.423 (1) Is the stop valve open? (2) Is the high pressure switch connector properly connected to the main PCB (A1P)? (3) Does the high pressure switch have continuity?

  • Page 398: Actuation Of Low Pressure Sensor

    Troubleshooting for Outdoor Unit SiBE18-821_C Actuation of Low Pressure Sensor Remote Controller Display Method of Detection by the pressure value with the low pressure sensor Malfunction Detection Malfunction When the low pressure is dropped under specific pressure Operating pressure: 0.07 MPa Decision Conditions Supposed...
  • Page 399 SiBE18-821_C Troubleshooting for Outdoor Unit Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.02 Refer to P.424 Open the stop valve. Is the stop valve open? (1) Mount a pressure gauge on the low pressure service port.

  • Page 400: Compressor Motor Lock

    Troubleshooting for Outdoor Unit SiBE18-821_C Compressor Motor Lock Remote Controller Display Method of The position signal is taken from UVW line, and the malfunction is detected when any Malfunction abnormality is observed in the phase-current waveform. Detection Malfunction When the compressor motor does not start up even in forced startup mode Decision Conditions Supposed...

  • Page 401: Outdoor Fan Motor Abnormality

    SiBE18-821_C Troubleshooting for Outdoor Unit Outdoor Fan Motor Abnormality Remote Controller Display Method of The error is determined according to the fan speed detected by Hall IC when the fan motor runs. Malfunction Detection Malfunction When the fan runs with speed less than a specified one for 6 seconds or more when the fan motor running conditions are met Decision When the error is generated 4 times, the system shuts down.

  • Page 402: Moving Part Of Electronic Expansion Valve (Y1E, Y3E) Abnormality

    Troubleshooting for Outdoor Unit SiBE18-821_C Moving Part of Electronic Expansion Valve (Y1E, Y3E) Abnormality Remote Controller Display Method of System checks if the connector is disconnected, and the detection is based on the continuity of electronic expansion valve coil. Malfunction Detection Malfunction No current is detected in the common (COM [+]) when power supply is ON.
  • Page 403 SiBE18-821_C Troubleshooting for Outdoor Unit Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Turn power supply off, and turn power supply on again. Return to normal? External factor other than malfunction (for example, noise etc.).

  • Page 404: Discharge Pipe Temperature Abnormality

    Troubleshooting for Outdoor Unit SiBE18-821_C Discharge Pipe Temperature Abnormality Remote Controller Display Method of The temperature detected by the discharge pipe thermistor determines the error. Malfunction Detection Malfunction When the discharge pipe temperature rises to an abnormally high level (135 °C and above) When the discharge pipe temperature rises suddenly (120 °C and above for 10 successive Decision minutes)

  • Page 405: Refrigerant Overcharged

    SiBE18-821_C Troubleshooting for Outdoor Unit Refrigerant Overcharged Remote Controller Display Method of Excessive charging of refrigerant is detected during check operation by using outdoor Malfunction temperature, outdoor heat exchanger temperature, and liquid pipe temperature. Detection Malfunction When the amount of refrigerant, which is calculated during check operation by using outdoor temperature, outdoor heat exchanger temperature, and liquid pipe temperature, exceeds the Decision standard.

  • Page 406: Outdoor Temperature Thermistor (R1T) Abnormality

    Troubleshooting for Outdoor Unit SiBE18-821_C Outdoor Temperature Thermistor (R1T) Abnormality Remote Controller Display Method of The temperature detected by the outdoor temperature thermistor determines the error. Malfunction Detection Malfunction When the outdoor temperature thermistor has short circuit or open circuit Decision Conditions Supposed...

  • Page 407: Discharge Pipe Thermistor (R2T) Abnormality

    SiBE18-821_C Troubleshooting for Outdoor Unit 7.10 Discharge Pipe Thermistor (R2T) Abnormality Remote Controller Display Method of The temperature detected by discharge pipe thermistor determines the error. Malfunction Detection Malfunction When a short circuit or an open circuit in the discharge pipe thermistor is detected Decision Conditions Supposed...

  • Page 408: Suction Pipe Thermistor (R3T, R5T) Abnormality

    Troubleshooting for Outdoor Unit SiBE18-821_C 7.11 Suction Pipe Thermistor (R3T, R5T) Abnormality Remote Controller Display Method of The temperature detected by the suction pipe thermistor determines the error. Malfunction Detection Malfunction When a short circuit or an open circuit in the suction pipe thermistor is detected Decision Conditions Supposed...

  • Page 409: Outdoor Heat Exchanger Thermistor (R4T) Abnormality

    SiBE18-821_C Troubleshooting for Outdoor Unit 7.12 Outdoor Heat Exchanger Thermistor (R4T) Abnormality Remote Controller Display Method of The temperature detected by the outdoor heat exchanger thermistor determines the error. Malfunction Detection Malfunction When a short circuit or an open circuit in the outdoor heat exchanger thermistor is detected Decision Conditions Supposed...

  • Page 410: Outdoor Liquid Pipe Thermistor (R7T) Abnormality

    Troubleshooting for Outdoor Unit SiBE18-821_C 7.13 Outdoor Liquid Pipe Thermistor (R7T) Abnormality Remote Controller Display Method of The temperature detected by the outdoor liquid pipe thermistor determines the error. Malfunction Detection Malfunction When a short circuit or an open circuit in the outdoor liquid pipe thermistor is detected Decision Conditions Supposed...

  • Page 411: Subcooling Heat Exchanger Gas Pipe Thermistor (R6T) Abnormality

    SiBE18-821_C Troubleshooting for Outdoor Unit 7.14 Subcooling Heat Exchanger Gas Pipe Thermistor (R6T) Abnormality Remote Controller Display Method of The temperature detected by subcooling heat exchanger gas pipe thermistor determines the error. Malfunction Detection Malfunction When the subcooling heat exchanger gas pipe thermistor is short circuited or open Decision Conditions Supposed...

  • Page 412: High Pressure Sensor Abnormality

    Troubleshooting for Outdoor Unit SiBE18-821_C 7.15 High Pressure Sensor Abnormality Remote Controller Display Method of The pressure detected by high pressure sensor determines the error. Malfunction Detection Malfunction When the high pressure sensor is short circuit or open circuit Decision Conditions Supposed Defective high pressure sensor...

  • Page 413: Low Pressure Sensor Abnormality

    SiBE18-821_C Troubleshooting for Outdoor Unit 7.16 Low Pressure Sensor Abnormality Remote Controller Display Method of The pressure detected by low pressure sensor determines the error. Malfunction Detection Malfunction When the low pressure sensor is short circuit or open circuit Decision Conditions Supposed Defective low pressure sensor...

  • Page 414: Outdoor Unit Pcb Abnormality

    Troubleshooting for Outdoor Unit SiBE18-821_C 7.17 Outdoor Unit PCB Abnormality Remote Controller Display Method of The error is detected based on the current value during waveform output before starting Malfunction compressor. The error is detected based on the value from current sensor during synchronous operation Detection when starting the unit.

  • Page 415: Radiation Fin Temperature Rise

    SiBE18-821_C Troubleshooting for Outdoor Unit 7.18 Radiation Fin Temperature Rise Remote Controller Display Method of Fin temperature is detected by the thermistor of the radiation fin. Malfunction Detection Malfunction When the temperature of the radiation fin increases above 83°C Decision Conditions Supposed Defective main PCB (A1P)

  • Page 416: Inverter Compressor Abnormality

    Troubleshooting for Outdoor Unit SiBE18-821_C 7.19 Inverter Compressor Abnormality Remote Controller Display Method of The error is detected from current flowing in the power transistor. Malfunction Detection Malfunction When an excessive current flows in the power transistor (Instantaneous overcurrent also causes activation.) Decision Conditions Supposed...

  • Page 417: Inverter Current Abnormality

    SiBE18-821_C Troubleshooting for Outdoor Unit 7.20 Inverter Current Abnormality Remote Controller Display Method of The error is detected by current flowing in the power transistor. Malfunction Detection Malfunction When overload in the compressor is detected. (Inverter secondary current 16.1 A) (1) 19.0 A and over continues for 5 seconds.

  • Page 418: Compressor Start-Up Error

    Troubleshooting for Outdoor Unit SiBE18-821_C 7.21 Compressor Start-up Error Remote Controller Display Method of The error is detected from current flowing in the power transistor. Malfunction Detection Malfunction Starting control of the compressor does not complete. Decision Conditions Supposed Defective compressor Causes Large pressure difference before starting the compressor Defective main PCB (A1P)

  • Page 419: High Voltage Of Capacitor In Main Inverter Circuit

    SiBE18-821_C Troubleshooting for Outdoor Unit 7.22 High Voltage of Capacitor in Main Inverter Circuit Remote Controller Display Method of The error is detected according to the voltage waveform of main circuit capacitor built in the Malfunction inverter. Detection Malfunction When the voltage waveform becomes identical with the waveform of the power supply open phase Decision Conditions...

  • Page 420: Radiation Fin Thermistor Abnormality

    Troubleshooting for Outdoor Unit SiBE18-821_C 7.23 Radiation Fin Thermistor Abnormality Remote Controller Display 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 status Decision ★...

  • Page 421: Low Pressure Drop Due To Refrigerant Shortage Or Electronic Expansion Valve Abnormality

    SiBE18-821_C Troubleshooting for Outdoor Unit 7.24 Low Pressure Drop due to Refrigerant Shortage or Electronic Expansion Valve Abnormality Remote Controller Display Method of Refrigerant shortage is detected by discharge pipe thermistor and low pressure saturation temperature. Malfunction Detection Malfunction Microcomputer judge and detect if the system is short of refrigerant. ★...
  • Page 422 Troubleshooting for Outdoor Unit SiBE18-821_C Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Low pressure is Cooling? Refrigerant shortage, 0.25 MPa or less? closed stop valve or refrigerant system is clogged.

  • Page 423: Power Supply Insufficient Or Instantaneous Failure

    SiBE18-821_C Troubleshooting for Outdoor Unit 7.25 Power Supply Insufficient or Instantaneous Failure Remote Controller Display Method of Detection of voltage of main circuit capacitor built in the inverter and power supply voltage. Malfunction Detection Malfunction When the abnormal voltage of main circuit capacitor built in the inverter and abnormal power supply voltage are detected Decision Conditions...

  • Page 424: Check Operation Is Not Conducted

    Troubleshooting for Outdoor Unit SiBE18-821_C 7.26 Check Operation is not Conducted Remote Controller Display Method of Check operation is executed or not Malfunction Detection Malfunction When the unit starts operation without check operation Decision Conditions Supposed Check operation is not executed. Causes Troubleshooting Be sure to turn off the power switch before connecting or disconnecting...

  • Page 425: Transmission Error Between Remote Controller And Indoor Unit

    SiBE18-821_C Troubleshooting for Outdoor Unit 7.27 Transmission Error between Remote Controller and Indoor Unit Remote Controller Display Method of In case of controlling with 2 remote controllers, check the system using microcomputer if signal transmission between indoor unit and remote controller (main and sub) is normal. Malfunction Detection Malfunction...

  • Page 426: Transmission Error Between Main And Sub Remote Controllers

    Troubleshooting for Outdoor Unit SiBE18-821_C 7.28 Transmission Error between Main and Sub Remote Controllers Remote Controller Display Method of In case of controlling with 2 remote controllers, check the system using microcomputer if signal transmission between indoor unit and remote controller (main and sub) is normal. Malfunction Detection Malfunction...

  • Page 427: Transmission Error Between Indoor Unit And Outdoor Unit In The Same System

    SiBE18-821_C Troubleshooting for Outdoor Unit 7.29 Transmission Error Between Indoor Unit and Outdoor Unit in the Same System Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Transmission error within or outside of other system Defective electronic expansion valve in indoor unit of other system Causes Defective indoor unit PCB in other system Improper connection of transmission wiring between indoor and outdoor unit...
  • Page 428 Troubleshooting for Outdoor Unit SiBE18-821_C Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. " " has been displayed for 2 Re-diagnose by display after minutes or more? passage of 2 minutes or more.

  • Page 429: Excessive Number Of Indoor Units

    SiBE18-821_C Troubleshooting for Outdoor Unit 7.30 Excessive Number of Indoor Units Remote Controller Display Method of A difference occurs in data by the type of refrigerant between indoor and outdoor units. Malfunction The number of indoor units is out of the allowable range. Incorrect signals are transmitted among the indoor unit, BP unit, and outdoor unit.

  • Page 430: Address Duplication Of Central Remote Controller

    Troubleshooting for Outdoor Unit SiBE18-821_C 7.31 Address Duplication of Central Remote Controller Remote Controller Display Method of The principal indoor unit detects the same address as that of its own on any other indoor unit. Malfunction Detection Malfunction The malfunction decision is made as soon as the abnormality is detected. Decision Conditions Supposed...

  • Page 431: Transmission Error Between Centralized Remote Controller And Indoor Unit

    SiBE18-821_C Troubleshooting for Outdoor Unit 7.32 Transmission Error between Centralized Remote Controller and Indoor Unit Remote Controller Display Method of Microcomputer checks if transmission between indoor unit and centralized remote controller is normal. Malfunction Detection Malfunction When transmission is not carried out normally for a certain amount of time Decision Conditions Supposed...
  • Page 432 Troubleshooting for Outdoor Unit SiBE18-821_C Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. an indoor unit once connected been remove or its Reset power supply simultaneously for all address optional controllers for changed?

  • Page 433: System Is Not Set Yet

    SiBE18-821_C Troubleshooting for Outdoor Unit 7.33 System is not Set yet Remote Controller Display Method of On check operation, the number of indoor units in terms of transmission is not corresponding to Malfunction that of indoor units that have made changes in temperature. Detection Malfunction The malfunction is determined as soon as the abnormality aforementioned is detected through...

  • Page 434: System Abnormality, Refrigerant System Address Undefined

    Troubleshooting for Outdoor Unit SiBE18-821_C 7.34 System Abnormality, Refrigerant System Address Undefined Remote Controller Display Method of The system detects an indoor unit to which auto address has not been assigned. Malfunction Detection Malfunction The malfunction decision is made as soon as the abnormality is detected. Decision Conditions Supposed...

  • Page 435: Check For Outdoor Unit

    SiBE18-821_C Troubleshooting for Outdoor Unit 7.35 Check for Outdoor Unit 7.35.1 Check for Causes of Rise in High Pressure Check No.01 Referring to the Fault Tree Analysis (FTA) shown below, probe the faulty points. ←Check to be sure the stop valve is open. Stop valve closed Local High pipe...

  • Page 436: Troubleshooting

    Troubleshooting for Outdoor Unit SiBE18-821_C 7.35.2 Check for Causes of Drop in Low Pressure Check No.02 Referring to the Fault Tree Analysis (FTA) shown below, probe the faulty points. [In cooling] ←Are the electrical characteristics normal? Faulty low pressure sensor Faulty (See *1.) compressor...

  • Page 437: Fan Motor Connector Check

    SiBE18-821_C Troubleshooting for Outdoor Unit 7.35.3 Fan Motor Connector Check Check No. 03 (1) Turn the power supply off. (2) With the fan motor connector disconnected, measure the resistance between each pin, then make sure that the resistance is more than the value mentioned in the following table. 1 White Measurement point Judgment...
  • Page 438 Troubleshooting for Outdoor Unit SiBE18-821_C 7.35.4 Check for the Factors of Overheat Operation Check No. 04 Identify the defective points referring to the failure factor analysis (FTA) as follows. Hot gas circuit clogging Faulty hot Defective solenoid ← Check if coil resistance and insulation gas bypass valve coil control...

  • Page 439: Thermistor Resistance / Temperature Characteristics

    SiBE18-821_C Thermistor Resistance / Temperature Characteristics 8. Thermistor Resistance / Temperature Characteristics Table 1 Table 2 Outdoor unit : fin thermistor FINTH Indoor unit : suction air : liquid pipe : indoor heat exchanger Outdoor unit : outdoor temperature : suction pipe 1 : outdoor heat exchanger : suction pipe 2 : subcooling heat exchanger gas pipe...
  • Page 440 Thermistor Resistance / Temperature Characteristics SiBE18-821_C Table 3 Outdoor unit : discharge pipe R2T k Ω k Ω k Ω k Ω k Ω k Ω T°C T°C T°C T°C T°C T°C 640.44 624.65 72.32 50.5 70.96 13.35 100.5 13.15 609.31 594.43 69.64...

  • Page 441: Pressure Sensor

    SiBE18-821_C Pressure Sensor 9. Pressure Sensor = 1.38V – 0.69 : Output Voltage [High Side] V = 0.57V – 0.28 : Output Voltage [Low Side] V : High pressure (MPa) Detected Pressure : Low pressure (MPa) (kg/cm 51.0 45.9 High Pressure (P 40.8 35.7 30.6...

  • Page 442: Method Of Replacing Inverter's Power Transistors Modules

    Method of Replacing Inverter’s Power Transistors Modules SiBE18-821_C 10.Method of Replacing Inverter’s Power Transistors Modules Check the power semiconductors mounted on the main PCB (A1P) with a multiple tester. <Items to be prepared> Multiple tester : Prepare the digital type of multiple tester with diode check function. <Preparation>...
  • Page 443 SiBE18-821_C Method of Replacing Inverter’s Power Transistors Modules Power module checking When using the digital type of multiple tester, make measurement in diode check mode. Tester terminal Criterion Remark – Not less than 0.3 V It may take time to (including ∞...

  • Page 444: Part 9 Removal Procedure

    SiBE18-821_C Part 9 Removal Procedure 1. Outdoor Unit..................433 1.1 Removal of Outer Panels ..............433 1.2 Removal of PCBs / Electrical Components ..........436 1.3 Removal of Outdoor Fans / Fan Motors ..........443 1.4 Removal of Thermistors ...............445 1.5 Removal of Electronic Expansion Valves / Peripheral Equipments ..446 1.6 Removal of Four Way Valve..............450 1.7 Removal of Compressor...............451 2.

  • Page 445: Outdoor Unit

    SiBE18-821_C Outdoor Unit 1. Outdoor Unit Removal of Outer Panels Procedure Warning Be sure to commence the disassembling work after 10 minutes or more elapsed from all power supplies have been turned off. Step Procedure Points Remove the 8 screws It is possible to remove only and remove the top the front panel (2) without...
  • Page 446 Outdoor Unit SiBE18-821_C Step Procedure Points The outdoor unit has 2 discharge grilles. Front panel (1) Hook Remove the 4 screws and unfasten the 4 hooks to remove a discharge grille. Remove the 7 screws of the front panel (1). Push the front panel (1) upward and remove it.
  • Page 447 SiBE18-821_C Outdoor Unit Step Procedure Points Unfasten the 3 hooks with a flat screwdriver and remove the suction grille. Suction grille (R12964) Outdoor Pull the outdoor temperature temperature thermistor thermistor and slide it to the right. Detach the outdoor temperature thermistor. (R12965) (R9218) Removal Procedure...

  • Page 448: Removal Of Pcbs / Electrical Components

    Outdoor Unit SiBE18-821_C Removal of PCBs / Electrical Components Procedure Warning Be sure to commence the disassembling work after 10 minutes or more elapsed from all power supplies have been turned off. Step Procedure Points Remove the 2 screws Preparation Terminal mounting plate of the terminal Remove the outer panels...
  • Page 449 SiBE18-821_C Outdoor Unit Step Procedure Points Cut off the 3 clamps. (R9222) (R9223) (R9224) Disconnect the relay connector for the reactor lead wire from each other. (R9225) Removal Procedure...
  • Page 450 Outdoor Unit SiBE18-821_C Step Procedure Points Disconnect the 2 connectors for the fan [X106A] [X107A] motor [X106A] [X107A]. (R12967) Release the fan motor lead wires from the hooks. (R9227) Release the lead wires of the solenoid valves and four way valve from the fixing plate and then remove the electrical component assembly.
  • Page 451 SiBE18-821_C Outdoor Unit Step Procedure Points Remove the 2 screws of the insulation sheet and then release the compressor lead wires (blue, red, white) and the lead wires between A1P and A3P (red, blue) from the hooks. (R9229) (R9230) 10 Remove the 2 screws M4 ×...
  • Page 452 Outdoor Unit SiBE18-821_C Step Procedure Points 11 Cut the 2 clamps, for the compressor lead wires. Cut the clamp for the lead wires from A3P to A1P (red, blue) and for Clamp for the lead wires from A3P the earth (green). to A1P and for the earth Clamps (2 places) for the compressor lead wires...
  • Page 453 SiBE18-821_C Outdoor Unit Step Procedure Points 13 Disconnect the connectors [X66A] [X81A] [X5A]. [X66A] [X81A] [X5A] (R12970) 14 Disconnect the reactor Refer to page 28 for detail. lead wire connectors, compressor lead wire connector, and all the other connectors from the main PCB.
  • Page 454 Outdoor Unit SiBE18-821_C Step Procedure Points 15 Remove the screw at M4(2) × 12 the top of the electrical component assembly. (R9238) 16 Unfasten the 2 hooks at the rear side. Fixing plate for the Hook Electrical component mounting plate (R12972) 17 The figures in the right are PCB assembly.

  • Page 455: Removal Of Outdoor Fans / Fan Motors

    SiBE18-821_C Outdoor Unit Removal of Outdoor Fans / Fan Motors Procedure Warning Be sure to commence the disassembling work after 10 minutes or more elapsed from all power supplies have been turned off. Step Procedure Points Preparation Remove the discharge grille, Front panel (1) front panels (1) and (2), and piping cover (front),...
  • Page 456 Outdoor Unit SiBE18-821_C Step Procedure Points Lead wire for fan motor (R9243) Cut the clamp. Pull out the connector while supporting the fan motor and Earth wire pushing the engaging hook, Remove the 4 screws without pulling its lead wires. and remove the fan When reassembling, put the motor.

  • Page 457: Removal Of Thermistors

    SiBE18-821_C Outdoor Unit Removal of Thermistors Procedure Warning Be sure to commence the disassembling work after 10 minutes or more elapsed from all power supplies have been turned off. Step Procedure Points For the details of the Preparation removal of the outdoor Remove the front panel (2) temperature thermistor and the right side panel...

  • Page 458: Removal Of Electronic Expansion Valves / Peripheral Equipments

    Outdoor Unit SiBE18-821_C Removal of Electronic Expansion Valves / Peripheral Equipments Procedure Warning Be sure to commence the disassembling work after 10 minutes or more elapsed from all power supplies have been turned off. Step Procedure Points Pull out the 2 electronic expansion valve coils.
  • Page 459 SiBE18-821_C Outdoor Unit Step Procedure Points Disconnect the lead wires of the high pressure switch. High pressure switch (S1PH) (R12978) Remove the screw and remove the solenoid Solenoid valve coil for valve coil for hot gas hot gas bypass (Y2S) bypass.
  • Page 460 Outdoor Unit SiBE18-821_C Step Procedure Points Before working, make sure that the refrigerant Electronic Warning expansion valve gas is empty in the circuit. Be careful not to get yourself (main) Be sure to apply nitrogen burnt with the pipes and other replacement when parts that are heated by the heating up the brazed...
  • Page 461 SiBE18-821_C Outdoor Unit Step Procedure Points Disconnect the brazed Note: part of the solenoid Do not use a metal saw for valve. cutting pipes by all means Solenoid valve for because the sawdust comes hot gas bypass into the circuit. When withdrawing the pipes, be careful not to pinch them firmly with pliers.

  • Page 462: Removal Of Four Way Valve

    Outdoor Unit SiBE18-821_C Removal of Four Way Valve Procedure Warning Be sure to commence the disassembling work after 10 minutes or more elapsed from all power supplies have been turned off. Step Procedure Points Remove the screw and Warning remove the four way Be careful not to get yourself valve coil.

  • Page 463: Removal Of Compressor

    SiBE18-821_C Outdoor Unit Removal of Compressor Procedure Warning Be sure to commence the disassembling work after 10 minutes or more elapsed from all power supplies have been turned off. Step Procedure Points Open upward the sound Preparation insulation for the Remove the outer panels, Sound insulation for the terminal cover terminal cover.
  • Page 464 Outdoor Unit SiBE18-821_C Step Procedure Points Remove the sound insulation for the compressor. (R9267) Remove the crankcase Pull the spring to release the heater at the lower of catch. the compressor. (R9268) Remove the 3 nuts of You can see the rear side the compressor.
  • Page 465 SiBE18-821_C Outdoor Unit Step Procedure Points Before working, make sure that the refrigerant is Warning empty in the circuit. Be careful not to get yourself Be sure to apply nitrogen burnt with the pipes and other replacement when parts that are heated by the heating up the brazed gas brazing machine.

  • Page 466: Bp Unit

    BP Unit SiBE18-821_C 2. BP Unit Removal of PCB Assembly Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the 4 screws and remove the electrical box cover. (Q0501) The PCB is as shown at The PCB is waterproof with...
  • Page 467 SiBE18-821_C BP Unit Step Procedure Points Disconnect the [X20A]: bypass connectors for the [X21A]: for room A electronic expansion [X22A]: for room B valve [X20A] [X21A] [X23A]: for room C [X22A] [X23A] and the BPMKS967B2B model does [X23A] connector for the not have [X23A].
  • Page 468 BP Unit SiBE18-821_C Step Procedure Points Disconnect the terminal of the earth. (Q0507) Remove the 2 screws and remove the PCB PCB assembly assembly. (R12990) Removal Procedure...

  • Page 469: Removal Of Electronic Expansion Valve Coils

    SiBE18-821_C BP Unit Removal of Electronic Expansion Valve Coils Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Detach the clamp of the Preparation wire harnesses. Remove the PCB assembly according to the “Removal of PCB Assembly”.
  • Page 470 BP Unit SiBE18-821_C Step Procedure Points Remove the sealing Sealing material materials of the pipe insulation sleeves. (R12994) (Q0513) Remove the putty. BPMKS967B2B model does not have an electronic expansion valve for room C. Electronic expansion valve coils for room A for room B for room C (R12993)
  • Page 471 SiBE18-821_C BP Unit Step Procedure Points Clamps (Q0529) Removal Procedure...

  • Page 472: Part 10 Appendix

    SiBE18-821_C Part 10 Appendix 1. Piping Diagrams..................461 1.1 Outdoor Unit ..................461 1.2 BP Unit ....................462 1.3 Indoor Unit....................463 2. Wiring Diagrams..................469 2.1 Outdoor Unit ..................469 2.2 BP Unit ....................470 2.3 Indoor Unit....................471 Appendix...

  • Page 473: Piping Diagrams

    SiBE18-821_C Piping Diagrams 1. Piping Diagrams Outdoor Unit RMXS112/140/160E8V1B Electronic expansion valve Electronic Double pipe expansion valve heat exchanger Filter Heat exchanger Pressure regulating valve Filter Service port Four way valve High pressure Service port sensor Low pressure sensor Filter Capillary tube Solenoid...
  • Page 474 Piping Diagrams SiBE18-821_C BP Unit BPMKS967B2B INDOOR UNIT GAS SIDE ROOM A REFRIGERANT FLOW THERMISTOR ( DGA ) ( 15.9CuT ) HEATING LOCAL PIPING COOLING GAS SIDE ROOM B THERMISTOR ( DGB ) ( 15.9CuT ) LOCAL PIPING ELECTRONIC EXPANSION VALVE ( BYPASS ) ELECTRONIC INDOOR UNIT FILTER...

  • Page 475: Indoor Unit

    SiBE18-821_C Piping Diagrams Indoor Unit 1.3.1 Wall Mounted Type FTXG25/35EV1BW(S) CTXG50EV1BW(S) INDOOR UNIT INDOOR UNIT HEAT EXCHANGER 7.0CuT HEAT EXCHANGER 7.0CuT 7.0CuT 7.0CuT THERMISTOR 7.0CuT 7.0CuT ON HEAT EXCH THERMISTOR ON HEAT EXCH. 7.0CuT 7.0CuT CROSS FLOW FAN CROSS FLOW FAN FIELD PIPING FIELD PIPING (6.4CuT)
  • Page 476 Piping Diagrams SiBE18-821_C FTXS20/25/35/42G2V1B FTXS50G2V1B INDOOR UNIT INDOOR UNIT 6.4CuT 6.4CuT HEAT EXCHANGER HEAT EXCHANGER THERMISTOR THERMISTOR CROSS FLOW FAN CROSS FLOW FAN ON HEAT EXCH. ON HEAT EXCH. FIELD PIPING FIELD PIPING 6.4CuT 6.4CuT FAN MOTOR FAN MOTOR FIELD PIPING FIELD PIPING 12.7CuT 9.5CuT...
  • Page 477 SiBE18-821_C Piping Diagrams 1.3.2 Floor Standing Type FVXS25/35FV1B FVXS50FV1B INDOOR UNIT INDOOR UNIT MUFFLER ASSY HEAT EXCHANGER MUFFLER ASSY HEAT EXCHANGER 6.4CuT 7.0CuT 7.0CuT 6.4CuT 6.4CuT 6.4CuT 6.4CuT THERMISTOR THERMISTOR ON HEAT EXCH. ON HEAT EXCH. 6.4CuT 6.4CuT 6.4CuT FIELD PIPING FAN MOTOR TURBO FAN FIELD PIPING...
  • Page 478 Piping Diagrams SiBE18-821_C 1.3.4 Duct Connected Type FDXS25/35EAVMB, FDXS50/60CVMB INDOOR UNIT ( 6.4CuT ) HEAT EXCHANGER THERMISTOR ON HEAT FIELD PIPING ( 6.4CuT ) EXCH. SIROCCO FAN FAN MOTOR FIELD PIPING CuT ) CuT ) REFRIGERANT FLOW COOLING HEATING FDXS25EAVMB FDXS50CVMB 12.7 FDXS35EAVMB...
  • Page 479 SiBE18-821_C Piping Diagrams FCQ35/50/60C7VEB Model Liquid φ9.52 φ6.35 Heat exchanger FCQ35C FCQ50C φ12.70 φ6.35 FCQ60C Liquid pipe connection port Gas pipe connection port Cooling Heating C: 3TW28925-1A 1.3.6 Ceiling Mounted Built-in Type FDBQ25B8V1 Heat exchanger Refrigerant flow Cooling Heating Refrigerant pipe connection port diameters Model Liquid Liquid pipe connection port...
  • Page 480 Piping Diagrams SiBE18-821_C FBQ35/50/60C7VEB Refrigerant flow Cooling Heat exchanger Heating Refrigerant pipe connection port diameters Model Liquid FBQ35C 9.52 6.35 FBQ50C 12.70 6.35 FBQ60C 12.70 6.35 Liquid pipe connection port Gas pipe connection port C: 3TW31275-1 1.3.7 Ceiling Suspended Type FHQ35/50/60BVV1B Indoor heat exchanger φ...

  • Page 481: Wiring Diagrams

    SiBE18-821_C Wiring Diagrams 2. Wiring Diagrams Outdoor Unit RMXS112/140/160E8V1B Appendix...
  • Page 482 Wiring Diagrams SiBE18-821_C BP Unit BPMKS967B2B ( DGA ) ( DLB ) ( DLA ) ( DGB ) t° t° t° t° FIELD WIRING X22A ROOM B ( BLU ) X21A LEDA ROOM A INDOOR ( RED ) LED1 ROOM A LED2 TRANSMISSION X20A...

  • Page 483: Indoor Unit

    SiBE18-821_C Wiring Diagrams Indoor Unit 2.3.1 Wall Mounted Type FTXG25/35EV1BW(S), CTXG50EV1BW(S) PCB2 LED4 LED3 LED2 SIGNAL RECEIVER GRN / YLW WIRELESS FIELD WIRING. t° GRN / YLW REMOTE CONTROLLER PCB3 PCB1 TRANSMISSION CIRCUIT outdoor INTELLIGENT- EYE SENSOR CAUTION NOTE THAT OPERATION WILL 3.15A RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS...
  • Page 484 Wiring Diagrams SiBE18-821_C FTXS20/25/35/42/50G2V1B PCB3 PCB1 LED1 3.15A OUTDOOR C102 LED2 MR10 FIELD WIRING. LED3 C101 TRANSMISSION CAUTION CIRCUIT NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY t˚ IS TURNED OFF AND THEN BACK ON AGAIN. : BUZZER RTH1 C101, C102 : CAPACITOR : FRAME GROUND...
  • Page 485 SiBE18-821_C Wiring Diagrams FTXS60/71GV1B PCB3 PCB1 LED1 OUTDOOR 3.15A C102 LED2 MR10 FIELD WIRING. LED3 GRN / C101 TRANSMISSION CIRCUIT CAUTION NOTE THAT OPERATION WILL RESTART t˚ AUTOMATICALLY IF THE MAIN POWER SUPPLY IS TURNED OFF AND THEN BACK ON AGAIN. RTH1 : BUZZER C101, C102 : CAPACITOR...
  • Page 486 Wiring Diagrams SiBE18-821_C 2.3.3 Floor / Ceiling Suspended Dual Type FLXS25/35/50/60BAVMB PCB3 PCB1 PCB2 3.15A → outdoor FIELD WIRING. / YLW PCB4 TRANSMISSION CIRCUIT CAUTION NOTE THAT OPERATION WILL SIGNAL RESTART AUTOMATICALLY IF RECEIVER THE MAIN POWER SUPPLY IS indoor TURNED OFF AND THEN BACK ON AGAIN.
  • Page 487 SiBE18-821_C Wiring Diagrams 2.3.5 Ceiling Mounted Cassette Type FFQ25/35/50/60B8V1B : CONNECTER DISCRIMINATION COLOUR FOR COMPONENTS. : CONNECTER COLOUR FOR COMPONENTS. t˚ : CONNECTER COLOUR FOR PRINTED CIRCUIT BOARD. IN CASE OF SIMULTANEOUS t˚ t˚ OPERATION SYSTEM INDOOR UNIT INDOOR UNIT ( MASTER ) ( SLAVE ) NOTE ) 5...
  • Page 488 Wiring Diagrams SiBE18-821_C FCQ35/50/60C7VEB In case of simultaneous 35-140 - Class operation system Indoor unit Indoor unit Indoor unit H05VV-U4G2.5 (Slave) (Master) (Slave) To outdoor unit Norm. Emg. Receiver/display unit Central remote control (Note 1) Remote control Wired remote control Indoor INDOOR UNIT Thermistor (coil)
  • Page 489 SiBE18-821_C Wiring Diagrams 2.3.6 Ceiling Mounted Built-in Type FDBQ25B8V1 Indoor Outdoor Notes Wired remote 1. When using the central remote control, see manual for connection control to the unit. (optional) 2. The remote control model varies according to the combination system.
  • Page 490 Wiring Diagrams SiBE18-821_C FBQ60C7VEB : Field wiring only for : Live only for 60 class 60 class : Neutral : Connector : Wire clamp NORM : Protective earth Transmission (screw) wiring central remote control 1N~220-240V 50Hz note 2 Colors 1N~220V 60Hz : Black BLU : Blue BRN : Brown...
  • Page 491 Revision History Date News No. Contents 2010/11/9 M-10013 Correction of troubleshooting flowchart for SkyAir models...
  • Page 492 Daikin Industries, Ltd.’s products are manufactured for export to numerous countries throughout the Warning world. Daikin Industries, Ltd. does not have control over which products are exported to and used in a particular country. Prior to purchase, please therefore confirm with your local authorised importer, distributor and/or retailer whether this product conforms to the applicable standards, and is suitable for use, in the region where the product will be used.

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