Daikin Super Multi NX FFQ25B8V1B Service Manual
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Daikin Super Multi NX FFQ25B8V1B Service Manual

E-series, f-series, g-series
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Table of Contents

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See also: Installation Manual
Service
Manual
E-Series / F-Series / G-Series
SiBE121021_C
[Applied Models]
● Inverter Multi : Cooling Only
● Inverter Multi : Heat Pump

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Summary of Contents for Daikin Super Multi NX FFQ25B8V1B

  • Page 1 SiBE121021_C Service Manual E-Series / F-Series / G-Series [Applied Models] ● Inverter Multi : Cooling Only ● Inverter Multi : Heat Pump...
  • Page 2 SiBE121021_C SUPER MULTI NX E-Series F-Series G-Series Cooling Only Indoor Unit FTXS20G2V1B FVXS25FV1B FFQ25B8V1B FDBQ25B8V1 FTXS25G2V1B FVXS35FV1B FFQ35B8V1B FBQ35C7VEB FTXS35G2V1B FVXS50FV1B FFQ50B8V1B FBQ50C7VEB FTXS42G2V1B FLKS25BAVMB FFQ60B8V1B FBQ60C7VEB FTXS50G2V1B FLKS35BAVMB FCQ35C7VEB FHQ35BVV1B FTXS20J2V1B FLKS50BAVMB FCQ50C7VEB FHQ50BVV1B FTXS25J2V1B FLKS60BAVMB FCQ60C7VEB FHQ60BVV1B FTXS35J2V1B FDKS25EAVMB FCQ35C8VEB FTXS42J2V1B...
  • Page 3 SiBE121021_C Heat Pump Indoor Unit FTXG25JV1BW FVXS25FV1B FFQ25B8V1B FDBQ25B8V1 FTXG25JV1BS FVXS35FV1B FFQ35B8V1B FBQ35C7VEB FTXG35JV1BW FVXS50FV1B FFQ50B8V1B FBQ50C7VEB FTXG35JV1BS FLXS25BAVMB FFQ60B8V1B FBQ60C7VEB CTXG50JV1BW FLXS35BAVMB FCQ35C7VEB FHQ35BVV1B CTXG50JV1BS FLXS50BAVMB FCQ50C7VEB FHQ50BVV1B FTXS20G2V1B FLXS60BAVMB FCQ60C7VEB FHQ60BVV1B FTXS25G2V1B FDXS25EAVMB FCQ35C8VEB FTXS35G2V1B FDXS35EAVMB FCQ50C8VEB FTXS42G2V1B FDXS50CVMB FCQ60C8VEB FTXS50G2V1B...

  • Page 4: Table Of Contents

    SiBE121021_C 1. Introduction ................... vii 1.1 Safety Cautions ..................vii 1.2 Used Icons ....................xi Part 1 List of Functions ..............1 1. Functions....................2 1.1 Cooling Only - Indoor Unit ................2 1.2 Cooling Only - Outdoor Unit ..............8 1.3 Heat Pump - Indoor Unit................9 1.4 Heat Pump - Outdoor Unit..............16 Part 2 Specifications ..............
  • Page 5 SiBE121021_C 2. Function of Indoor Unit (SA Models) ...........104 2.1 Drain Pump Control................104 2.2 Thermostat Sensor in Remote Controller..........106 2.3 Freeze Prevention Control ..............108 2.4 Hot Start Control (In Heating Operation Only)........109 3. Function of Thermistor ................110 4. Control Specification ................112 4.1 Mode Hierarchy ..................112 4.2 Frequency Control................113 4.3 Controls at Mode Changing / Start-up..........116...
  • Page 6 SiBE121021_C 5.3 Fan Motor or Related Abnormality ............311 5.4 Thermistor or Related Abnormality (Indoor Unit)........314 5.5 Front Panel Open / Close Fault (FTXG and CTXG Series)....315 5.6 Signal Transmission Error (between Indoor Unit and Outdoor Unit) ..316 5.7 Unspecified Voltage (between Indoor Unit and Outdoor Unit) .....318 6.
  • Page 7 SiBE121021_C 8.12 Outdoor Fan System Check ..............369 8.13 Capacitor Voltage Check..............369 8.14 Power Module Check ................369 Part 7 Removal Procedure ............370 1. Outdoor Unit - 50~75 Class..............371 1.1 Removal of Outer Panels ..............371 1.2 Removal of Electrical Box ..............375 1.3 Removal of PCBs .................383 1.4 Removal of Outdoor Fan / Fan Motor...........388 1.5 Removal of Sound Blankets ..............390...

  • Page 8: Introduction

    Introduction SiBE121021_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 SiBE121021_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 SiBE121021_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 SiBE121021_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 SiBE121021_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

    SiBE121021_C Part 1 List of Functions 1. Functions....................2 1.1 Cooling Only - Indoor Unit ................2 1.2 Cooling Only - Outdoor Unit ..............8 1.3 Heat Pump - Indoor Unit................9 1.4 Heat Pump - Outdoor Unit..............16 List of Functions...

  • Page 14: Functions

    Functions SiBE121021_C 1. Functions Cooling Only - Indoor Unit Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air-Purifying Filter — — Function Clean Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — — Operation Limit for Heating (°CWB) —...
  • Page 15 SiBE121021_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 — Operation Limit for Heating (°CWB) — Air-Purifying Filter with Photocatalytic — Deodorizing Function PAM Control —...
  • Page 16 Functions SiBE121021_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 — Operation Limit for Heating (°CWB) — — Air-Purifying Filter with Photocatalytic —...
  • Page 17 SiBE121021_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 — Operation Limit for Heating (°CWB) — Air-Purifying Filter with Photocatalytic — Deodorizing Function PAM Control —...
  • Page 18 Functions SiBE121021_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 — — Operation Limit for Heating (°CWB) — — Air-Purifying Filter with Photocatalytic —...
  • Page 19 SiBE121021_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 — — Operation Limit for Heating (°CWB) — — Air-Purifying Filter with Photocatalytic —...

  • Page 20: Cooling Only - Outdoor Unit

    Functions SiBE121021_C Cooling Only - Outdoor Unit Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air-Purifying Filter — — Function Clean –10 Operation Limit for Cooling (°CDB) Photocatalytic Deodorizing Filter — — Operation Limit for Heating (°CWB) —...

  • Page 21: Heat Pump - Indoor Unit

    SiBE121021_C Functions Heat Pump - Indoor Unit 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 Functions SiBE121021_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 23 SiBE121021_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 24 Functions SiBE121021_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 25 SiBE121021_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) — — Deodorizing Function PAM Control —...
  • Page 26 Functions SiBE121021_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 27 SiBE121021_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 28: Heat Pump - Outdoor Unit

    Functions SiBE121021_C Heat Pump - Outdoor Unit 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 –...

  • Page 29: Part 2 Specifications

    SiBE121021_C Part 2 Specifications 1. Specifications ..................18 1.1 Cooling Only - Indoor Unit ..............18 1.2 Cooling Only - Outdoor Unit ..............29 1.3 Heat Pump - Indoor Unit.................31 1.4 Heat Pump - Outdoor Unit..............45 Specifications...

  • Page 30: Specifications

    Specifications SiBE121021_C 1. Specifications Cooling Only - Indoor Unit Wall Mounted Type 50 Hz, 220 - 230 - 240 V Model FTXS20G2V1B FTXS25G2V1B Rated Capacity 2.0 kW Class 2.5 kW Class Front Panel Color White White 9.4 (332) 9.1 (321) 7.4 (262) 7.1 (252) m³/min...
  • Page 31 SiBE121021_C Specifications 50 Hz, 220 - 230 - 240 V Model FTXS50G2V1B FTXS20J2V1B Rated Capacity 5.0 kW Class 2.0 kW Class Front Panel Color White White 10.2 (360) 9.4 (332) 8.6 (305) 7.4 (261) m³/min Airflow Rates (cfm) 7.0 (246) 5.5 (194) 6.0 (212) 4.1 (145)
  • Page 32 Specifications SiBE121021_C 50 Hz, 220 - 230 - 240 V Model FTXS42J2V1B FTXS50J2V1B Rated Capacity 4.2 kW Class 5.0 kW Class Front Panel Color White White 11.3 (399) 11.6 (410) 9.0 (318) 9.2 (325) m³/min Airflow Rates (cfm) 6.8 (240) 7.0 (247) 5.9 (208) 6.0 (212)
  • Page 33 SiBE121021_C Specifications Floor Standing Type 50 Hz, 220 - 230 - 240 V Model FVXS25FV1B FVXS35FV1B Rated Capacity 2.5 kW Class 3.5 kW Class Front Panel Color White White 8.2 (290) 8.5 (300) 6.5 (230) 6.7 (237) m³/min Airflow Rates (cfm) 4.8 (169) 4.9 (173)
  • Page 34 Specifications SiBE121021_C Floor / Ceiling Suspended Dual Type 50 Hz, 220 - 230 - 240 V Model FLKS25BAVMB FLKS35BAVMB Rated Capacity 2.5 kW Class 3.5 kW Class Front Panel Color Almond White Almond White 7.6 (268) 8.6 (304) 6.8 (240) 7.6 (268) m³/min Airflow Rates...
  • Page 35 SiBE121021_C Specifications Duct Connected Type 50 Hz, 230 V Model FDKS25EAVMB FDKS35EAVMB Rated Capacity 2.5 kW Class 3.5 kW Class — — Front Panel Color 8.7 (307) 8.7 (307) 8.0 (282) 8.0 (282) m³/min Airflow Rates (cfm) 7.3 (258) 7.3 (258) 6.2 (219) 6.2 (219) Type...
  • Page 36 Specifications SiBE121021_C Ceiling Mounted Cassette Type 50 Hz, 230 V Model FFQ25B8V1B FFQ35B8V1B Rated Capacity 2.5 kW Class 3.5 kW Class Color White White Decoration Panel Dimensions (H × W × D) 55 × 700 × 700 55 × 700 × 700 9.0 (318) 10.0 (353) —...
  • Page 37 SiBE121021_C Specifications 50 Hz, 220 - 230 - 240 V / 60 Hz, 220 V Model FCQ35C7VEB FCQ50C7VEB Rated Capacity 3.5 kW Class 5.0 kW Class Model BYCQ140CW1 / BYCQ140CW1W BYCQ140CW1 / BYCQ140CW1W Color Pure White Pure White Decoration Panel Dimensions (H ×...
  • Page 38 Specifications SiBE121021_C 50 Hz, 220 - 230 - 240 V / 60 Hz, 220 V Model FCQ35C8VEB FCQ50C8VEB Rated Capacity 3.5 kW Class 5.0 kW Class Model BYCQ140CW1 / BYCQ140CW1W BYCQ140CW1 / BYCQ140CW1W Color Pure White Pure White Decoration Panel Dimensions (H ×...
  • Page 39 SiBE121021_C Specifications Ceiling Mounted Built-in Type 50 Hz, 220 - 230 - 240 V / 50 Hz, 230 V 60 Hz, 220 V Model FDBQ25B8V1 FBQ35C7VEB Rated Capacity 2.5 kW Class 3.5 kW Class Color — White Decoration Panel Dimensions (H × W × D) —...
  • Page 40 Specifications SiBE121021_C Ceiling Suspended Type 50 Hz, 220 - 230 - 240 V Model FHQ35BVV1B FHQ50BVV1B Rated Capacity 3.5 kW Class 5.0 kW Class Panel Color White White 13.0 (459) 13.0 (459) Airflow Rates m³/min 10.0 (353) 10.0 (353) Type Sirocco Fan Sirocco Fan Motor Output...

  • Page 41: Cooling Only - Outdoor Unit

    SiBE121021_C Specifications Cooling Only - Outdoor Unit 50 Hz, 230 V Model 3MKS50E3V1B 4MKS58E3V1B Casing Color Ivory White Ivory White Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type Compressor Model 2YC36BXD 2YC36BXD Motor Output 1,100 1,100 Model FVC50K FVC50K Refrigerant Oil Charge 0.65...
  • Page 42 Specifications SiBE121021_C 50 Hz, 230 V Model 4MKS75F2V1B 5MKS90E2V3B Casing Color Ivory White Ivory White Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type Compressor Model 2YC45DXD 2YC63BXD Motor Output 1,380 1,920 Model FVC50K FVC50K Refrigerant Oil Charge 0.65 0.75 Type R-410A R-410A...

  • Page 43: Heat Pump - Indoor Unit

    SiBE121021_C Specifications Heat Pump - Indoor Unit Wall Mounted Type 50 Hz, 220 - 230 - 240 V FTXG25JV1BW FTXG25JV1BS Model Cooling Heating Cooling Heating Rated Capacity 2.5 kW Class 2.5 kW Class Front Panel Color White Silver 8.8 (311) 9.6 (339) 8.8 (311) 9.6 (339)
  • Page 44 Specifications SiBE121021_C 50 Hz, 220 - 230 - 240 V CTXG50JV1BW CTXG50JV1BS Model Cooling Heating Cooling Heating Rated Capacity 5.0 kW Class 5.0 kW Class Front Panel Color White Silver 10.5 (371) 11.4 (402) 10.5 (371) 11.4 (402) 8.7 (307) 9.8 (346) 8.7 (307) 9.8 (346)
  • Page 45 SiBE121021_C Specifications 50 Hz, 220 - 230 - 240 V FTXS35G2V1B FTXS42G2V1B Model Cooling Heating Cooling Heating Rated Capacity 3.5 kW Class 4.2 kW Class Front Panel Color White White 10.4 (367) 10.6 (374) 9.1 (321) 11.2 (395) 7.7 (270) 8.5 (302) 7.7 (273) 9.4 (333)
  • Page 46 Specifications SiBE121021_C 50 Hz, 220 - 230 - 240 V FTXS25J2V1B FTXS35J2V1B Model Cooling Heating Cooling Heating Rated Capacity 2.5 kW Class 3.5 kW Class Front Panel Color White White 10.8 (381) 11.9 (420) 11.4 (403) 12.4 (438) 7.9 (279) 9.1 (321) 8.7 (307) 9.5 (335)
  • Page 47 SiBE121021_C Specifications 50 Hz, 220 - 230 - 240 V ATXS20G2V1B ATXS25G2V1B 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 48 Specifications SiBE121021_C 50 Hz, 220 - 230 - 240 V ATXS50G2V1B 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 49 SiBE121021_C Specifications Floor Standing Type 50 Hz, 220 - 230 - 240 V 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 (230) 6.9 (244) 6.7 (237)
  • Page 50 Specifications SiBE121021_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 51 SiBE121021_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 52 Specifications SiBE121021_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 53 SiBE121021_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 Model BYCQ140CW1 / BYCQ140CW1W BYCQ140CW1 / BYCQ140CW1W Color Pure White Pure White Decoration Panel...
  • Page 54 Specifications SiBE121021_C 50 Hz, 220 - 230 - 240 V / 60 Hz, 220 V FCQ35C8VEB FCQ50C8VEB Model Cooling Heating Cooling Heating Rated Capacity 3.5 kW Class 5.0 kW Class Model BYCQ140CW1 / BYCQ140CW1W BYCQ140CW1 / BYCQ140CW1W Color Pure White Pure White Decoration Panel...
  • Page 55 SiBE121021_C Specifications 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 56 Specifications SiBE121021_C 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 57: Heat Pump - Outdoor Unit

    SiBE121021_C Specifications Heat Pump - Outdoor Unit 50 Hz, 230 V 3MXS52E3V1B Model Cooling Heating Casing Color Ivory White Type Hermetically Sealed Swing Type Compressor Model 2YC36BXD Motor Output 1,100 Model FVC50K Refrigerant Oil Charge 0.65 Type R-410A Refrigerant Charge m³/min Airflow Rates 1,589...
  • Page 58 Specifications SiBE121021_C 50 Hz, 230 V 3MXS68G2V1B 4MXS68F2V1B Model Cooling Heating Cooling Heating Casing Color Ivory White Ivory White Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type Compressor Model 2YC45DXD 2YC45DXD Motor Output 1,380 1,380 Model FVC50K FVC50K Refrigerant Oil Charge 0.65 0.65...
  • Page 59 SiBE121021_C Specifications 50 Hz, 230 V 4MXS80E2V3B 5MXS90E2V3B Model Cooling Heating Cooling Heating Casing Color Ivory White Ivory White Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type Compressor Model 2YC63BXD 2YC63BXD Motor Output 1,920 1,920 Model FVC50K FVC50K Refrigerant Oil Charge 0.75 0.75...
  • Page 60 Specifications SiBE121021_C 50 Hz, 230 V 3AMX52E3V1B 4AMX80E2V3B Model Cooling Heating Cooling Heating Casing Color Ivory White Ivory White Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type Compressor Model 2YC36BXD 2YC63BXD Motor Output 1,100 1,920 Model FVC50K FVC50K Refrigerant Oil Charge 0.65 0.75...

  • Page 61: Part 3 Printed Circuit Board Connector Wiring Diagram

    SiBE121021_C Part 3 Printed Circuit Board Connector Wiring Diagram 1. Indoor Unit.....................50 1.1 Wall Mounted Type ................50 1.2 Floor Standing Type ................59 1.3 Floor / Ceiling Suspended Dual Type.............61 1.4 Duct Connected Type................63 1.5 Ceiling Mounted Cassette Type .............65 1.6 Ceiling Mounted Built-in Type ..............69 1.7 Ceiling Suspended Type ................74 2.

  • Page 62: Indoor Unit

    Indoor Unit SiBE121021_C 1. Indoor Unit Wall Mounted Type 1.1.1 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...
  • Page 63 SiBE121021_C Indoor Unit PCB Detail [A1P]: Control PCB JB JC LED A S200 2P254830-1 Printed Circuit Board Connector Wiring Diagram...
  • Page 64 Indoor Unit SiBE121021_C [A2P]: Signal Receiver / Display PCB 3P254832-1 [A3P]: INTELLIGENT EYE Sensor PCB 3P255914-1 Printed Circuit Board Connector Wiring Diagram...
  • Page 65 SiBE121021_C Indoor Unit 1.1.2 FTXS20/25/35/42/50G2V1B, FTXS20/25/35/42/50J2V1B, ATXS20/25/35/42/50G2V1B 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 66 Indoor Unit SiBE121021_C PCB Detail PCB (1): Control PCB LED A 2P206687-1 Printed Circuit Board Connector Wiring Diagram...
  • Page 67 SiBE121021_C Indoor Unit 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 68 Indoor Unit SiBE121021_C 1.1.3 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 69 SiBE121021_C Indoor Unit PCB Detail PCB (1): Control PCB (3.15A) LED A 2P227881-2 Printed Circuit Board Connector Wiring Diagram...
  • Page 70 Indoor Unit SiBE121021_C 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 71: Floor Standing Type

    SiBE121021_C Indoor Unit Floor Standing Type 1.2.1 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 72 Indoor Unit SiBE121021_C 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 73: Floor / Ceiling Suspended Dual Type

    SiBE121021_C Indoor Unit Floor / Ceiling Suspended Dual Type 1.3.1 FLK(X)S25/35/50/60BAVMB 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 74 Indoor Unit SiBE121021_C 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 75: Duct Connected Type

    SiBE121021_C Indoor Unit Duct Connected Type 1.4.1 FDK(X)S25/35EAVMB, FDK(X)S50/60CVMB 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 76 Indoor Unit SiBE121021_C 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 77: Ceiling Mounted Cassette Type

    SiBE121021_C Indoor Unit Ceiling Mounted Cassette Type 1.5.1 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 78 Indoor Unit SiBE121021_C 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 79 SiBE121021_C Indoor Unit 1.5.2 FCQ35/50/60C7VEB, FCQ35/50/60C8VEB 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)
  • Page 80 Indoor Unit SiBE121021_C PCB Detail [A1P]: Control PCB X36A X16A X18A X15A X30A X24A X17A X20A X27A X25A 2P233635-3 2P233635-7 [A2P]: Sensor PCB 4P159171-1 Printed Circuit Board Connector Wiring Diagram...

  • Page 81: Ceiling Mounted Built-In Type

    SiBE121021_C Indoor Unit Ceiling Mounted Built-in Type 1.6.1 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 82 Indoor Unit SiBE121021_C 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 83 SiBE121021_C Indoor Unit 1.6.2 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 84 Indoor Unit SiBE121021_C 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 85 SiBE121021_C Indoor Unit [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 86: Ceiling Suspended Type

    Indoor Unit SiBE121021_C Ceiling Suspended Type 1.7.1 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 87 SiBE121021_C Indoor Unit 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 88: Remote Controller

    Remote Controller SiBE121021_C 2. Remote Controller Wired Remote Controller 2.1.1 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 455 for detail. PCB Detail 2P113638-2 Printed Circuit Board Connector Wiring Diagram...
  • Page 89 SiBE121021_C Remote Controller 2.1.2 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 90: Wireless Remote Controller

    Remote Controller SiBE121021_C Wireless Remote Controller 2.2.1 BRC7E530W/531W, BRC7F532F/533F, BRC7EA63W/66 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 Address setting switch ∗...
  • Page 91 SiBE121021_C Remote Controller PCB Detail [A3P]: Signal Receiver PCB 3P156326-2 [A4P]: Display PCB (BRC7E530W/531W) LED4 LED3 LED2 LED1 3P086209-1 ★ LED5 and LED6 do not function. [A4P]: Display PCB (BRC7F532F/533F) LED4 LED3 LED2 LED1 3P174795-1 ★ LED5 and LED6 do not function. [A4P]: Display PCB (BRC7EA63W/66) LED1 LED2...

  • Page 92: Outdoor Unit

    Outdoor Unit SiBE121021_C 3. Outdoor Unit Connectors and PCB (1): Main PCB Other Parts 1) S10 Connector for terminal board (indoor - outdoor transmission) 2) S15 Connector for COOL / HEAT mode lock ∗ Refer to page 460 for detail. 3) S20 (white) Connector for electronic expansion valve coil A port 4) S21 (red)
  • Page 93 SiBE121021_C Outdoor Unit PCB Detail PCB (1): Main PCB (50/52/58 class) S101 W V U 2P165232-2 2P165232-4 PCB (1): Main PCB (68/75 class) V100 S101 W V U 3P194316-1 3P194316-2 Printed Circuit Board Connector Wiring Diagram...
  • Page 94 Outdoor Unit SiBE121021_C PCB (1): Main PCB (80/90 class) E1 E2 V100 (white) (blue) S101 W V U 2P171491-1 2P171491-2 PCB (2): Service Monitor PCB (for 3 or 4 rooms) LED3 LED1 LED4 LED2 LED A S102 3P165332-1 PCB (2): Service Monitor PCB (for 5 rooms) LED5 LED3 LED1...

  • Page 95: Part 4 Function And Control

    SiBE121021_C Part 4 Function and Control 1. Function of Indoor Unit (RA Models).............84 1.1 Temperature Control ................84 1.2 Frequency Principle................84 1.3 Operation Starting Control..............86 1.4 Airflow Direction Control.................87 1.5 Fan Speed Control for Indoor Units............89 1.6 Program Dry Operation ................90 1.7 Automatic Operation................91 1.8 Thermostat Control.................92 1.9 NIGHT SET Mode ..................94...

  • Page 96: Function Of Indoor Unit (Ra Models)

    Function of Indoor Unit (RA Models) SiBE121021_C 1. Function of Indoor Unit (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 97 SiBE121021_C Function of Indoor Unit (RA Models) Drawing of The following drawing shows a schematic view of the inverter principle: Inverter Refrigerant circulation rate (high) high speed Amount of heat Amount of heat exchanged air (large) exchanged air (large) high f low f Amount of heat Amount of heat...

  • Page 98: Operation Starting Control

    Function of Indoor Unit (RA Models) SiBE121021_C Operation Starting Control Wall Mounted Type: FTXG and CTXG 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 99: Airflow Direction Control

    SiBE121021_C Function of Indoor Unit (RA Models) Airflow Direction Control Power-Airflow The large flaps send a large volume of air downward 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 flaps retract into the indoor unit.
  • Page 100 Function of Indoor Unit (RA Models) SiBE121021_C 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: FTXS and ATXS Series Alternative repetition of vertical and horizontal swing motions enables uniform air-conditioning of the entire room.

  • Page 101: Fan Speed Control For Indoor Units

    SiBE121021_C Function of Indoor Unit (RA Models) 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 102: Program Dry Operation

    Function of Indoor Unit (RA Models) SiBE121021_C COMFORT Wall Mounted Type 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 103: Automatic Operation

    SiBE121021_C Function of Indoor Unit (RA Models) 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 104: Thermostat Control

    Function of Indoor Unit (RA Models) SiBE121021_C 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 105 SiBE121021_C Function of Indoor Unit (RA Models) Heating Wall Mounted Type: FTXG and CTXG Series, FTXS Series 60/71 Class Room thermistor temperature – target temperature 2.0˚C 1.5˚C 0.5˚C (R11894) Wall Mounted Type: FTXS and ATXS Series 20-50 Class Floor Standing Type Room thermistor temperature –...

  • Page 106: Night Set Mode

    Function of Indoor Unit (RA Models) SiBE121021_C 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 107: Econo Operation

    SiBE121021_C Function of Indoor Unit (RA Models) 1.10 ECONO Operation FTXG, CTXG, FTXS, ATXS, FVXS Series 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 108: Home Leave Operation

    Function of Indoor Unit (RA Models) SiBE121021_C 1.11 HOME LEAVE Operation Outline FLK(X)S, FDK(X)S Series 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 109: 2-Area Intelligent Eye Operation

    SiBE121021_C Function of Indoor Unit (RA Models) 1.12 2-Area INTELLIGENT EYE Operation Outline Wall Mounted Type: FTXS 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 110 Function of Indoor Unit (RA Models) SiBE121021_C 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)

  • Page 111: Intelligent Eye Operation

    SiBE121021_C Function of Indoor Unit (RA Models) 1.13 INTELLIGENT EYE Operation Outline Wall Mounted Type: FTXG and CTXG Series, FTXS Series 60/71 Class, ATXS Series 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 112: Inverter Powerful Operation

    Function of Indoor Unit (RA Models) SiBE121021_C 1.14 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 113 SiBE121021_C Function of Indoor Unit (RA Models) 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 114: Other Functions

    Function of Indoor Unit (RA Models) SiBE121021_C 1.15 Other Functions 1.15.1 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 115 SiBE121021_C Function of Indoor Unit (RA Models) 1.15.7 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 116: Function Of Indoor Unit (Sa Models)

    Function of Indoor Unit (SA Models) SiBE121021_C 2. Function of Indoor Unit (SA Models) Drain Pump Control 2.1.1 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...
  • Page 117 SiBE121021_C Function of Indoor Unit (SA Models) 2.1.3 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 min. 5 sec. 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 reset.

  • Page 118: Thermostat Sensor In Remote Controller

    Function of Indoor Unit (SA Models) SiBE121021_C 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 119 SiBE121021_C Function of Indoor Unit (SA Models) 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 120: Freeze Prevention Control

    Function of Indoor Unit (SA Models) SiBE121021_C 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 121: Hot Start Control (In Heating Operation Only)

    SiBE121021_C Function of Indoor Unit (SA Models) 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 122: Function Of Thermistor

    Function of Thermistor SiBE121021_C 3. Function of Thermistor ★ Illustrations are for 5 room models as representative and have 5 lines of indoor unit system (A ~ E). 3 room models have 3 lines (A ~ C) and 4 room models have 4 lines (A ~ D). Cooling Only Model Expansion valve Compressor...
  • Page 123 SiBE121021_C Function of Thermistor 3. In cooling operation, the outdoor heat exchanger thermistor is used for high pressure protection. (2) Discharge 1. The discharge pipe thermistor is used for controlling discharge pipe temperature. If the Pipe Thermistor discharge pipe temperature (used in place of the inner temperature of the compressor) rises abnormally, the operating frequency becomes lower or the operation halts.

  • Page 124: Control Specification

    Control Specification SiBE121021_C 4. Control Specification Mode Hierarchy Outline There are two modes; the one is the normal operation mode and the other is the forced operation mode for installation and providing service. Detail Cooling only model There are following modes. Air conditioner control mode Forced operation mode Forced cooling operation...

  • Page 125: Frequency Control

    SiBE121021_C Control Specification Frequency Control Outline Frequency that corresponds to each room’s capacity is determined according to the difference between the target temperature and the temperature of each room. The function is explained as follows. 1. How to determine frequency 2.
  • Page 126 Control Specification SiBE121021_C For Heat Pump Model 1. Determine command frequency Command frequency is determined in the following order of priority. 1. Limiting defrost control time 2. Forced cooling / heating 3. Indoor frequency command 2. Determine upper limit frequency The minimum value is set as the upper limit frequency among the frequency upper limits of the following functions: Compressor protection, input current, discharge pipe temperature, low Hz high pressure...
  • Page 127 SiBE121021_C Control Specification PI Control (Determine Frequency Up / Down by ∆ D Signal) 1. P control A total of the ∆ D value is calculated in each sampling time (20 seconds), and the frequency is adjusted according to its difference from the frequency previously calculated. 2.

  • Page 128: Controls At Mode Changing / Start-Up

    Control Specification SiBE121021_C Controls at Mode Changing / Start-up 4.3.1 Preheating Operation Outline The inverter operation in open phase starts with the conditions of the preheating command from the indoor, the outdoor temperature, and discharge pipe temperature. Detail ON Condition When outdoor temperature is below 10.5°C and discharge pipe temperature is below 10.5°C, the inverter operation in open phase starts.

  • Page 129: Discharge Pipe Temperature Control

    SiBE121021_C Control Specification 4.3.5 Compressor Protection Function When turning the compressor from OFF to ON, the upper limit of frequency is set as follows. (The function is not used when defrosting.) (Hz) Frequency (sec.) Time (R13528) 50/52/58 class 68/75/80/90 class A (Hz) B (Hz) C (Hz)

  • Page 130: Input Current Control

    Control Specification SiBE121021_C Input Current Control Outline An input current is detected by the CT during the compressor is running, and the frequency upper limit is set from the input current. In case of heat pump model, this control, which is the upper limit control of the frequency, takes priority to the lower limit control of four way valve operation compensation.

  • Page 131: Heating Peak-Cut Control

    SiBE121021_C Control Specification Heating Peak-cut Control Outline During heating operation, the indoor heat exchanger temperature determines the frequency upper limit to prevent abnormal high pressure. Detail The operating frequency is judged with the indoor heat exchanger temperature 2 minutes after the operation starts and seconds after the number of operation room is changed.

  • Page 132: Liquid Compression Protection Function

    Control Specification SiBE121021_C Liquid Compression Protection Function Outline In order to obtain the dependability of the compressor, the compressor is stopped according to the outdoor temperature and temperature of the outdoor heat exchanger. Detail Operation stops depending on the outdoor temperature Compressor turns off under the conditions that the system is in cooling operation and outdoor temperature is below –12°C.

  • Page 133: Low Hz High Pressure Limit

    SiBE121021_C Control Specification 4.11 Low Hz High Pressure Limit Outline The upper limit of high pressure in a low Hz zone is set. The upper limit of the indoor heat exchanger temperature is also set by the operating frequency. Zones are divided into three, reset zone, keep zone, and drooping zone, and the frequency control is carried out according to each zone.
  • Page 134 Control Specification SiBE121021_C Detail The followings are the examples of control which function in each mode by the electronic expansion valve control. Operation pattern : function × : not function When power is turned on × × × × × ×...

  • Page 135: Pressure Equalizing Control

    SiBE121021_C Control Specification 4.12.1 Fully Closing with Power on The electronic expansion valve is initialized when the power is turned on. The opening position is set and the pressure equalization is developed. 4.12.2 Pressure Equalizing Control When the compressor is stopped, the pressure equalizing control is activated. The electronic expansion valve opens, and develops the pressure equalization.
  • Page 136 Control Specification SiBE121021_C 4.12.8 Target Discharge Pipe Temperature Control The target discharge pipe temperature is obtained from the indoor and outdoor heat exchanger temperature, and the electronic expansion valve opening is adjusted so that the actual discharge pipe temperature becomes close to the target discharge pipe temperature. (Indirect SH (superheating) control using the discharge pipe temperature) The target discharge pipe temperature is set as to become the...
  • Page 137 SiBE121021_C Control Specification 4.12.10 Disconnection of the Discharge Pipe Thermistor Outline The disconnection of the discharge pipe thermistor is detected by comparing the discharge pipe temperature with the condensing temperature. If the discharge pipe thermistor is disconnected, the electronic expansion valve opens according to the outdoor temperature and the operation frequency, and operates for a specified time, and then stops.

  • Page 138: Malfunctions

    Control Specification SiBE121021_C 4.13 Malfunctions 4.13.1 Sensor Malfunction Detection Sensor malfunction may occur either in the thermistor or current transformer (CT) system. Relating to Thermistor Malfunction 1. Outdoor heat exchanger thermistor 2. Discharge pipe thermistor 3. Radiation fin thermistor 4. Gas pipe thermistor 5.
  • Page 139 SiBE121021_C Control Specification 4.13.4 Anti-icing Function During cooling, if the indoor heat exchanger temperature in the operation stopped room becomes below the specified temperature for the specified time, the electronic expansion valve is opened in the operation stopped room as specified, and the fully closed operation is carried out.

  • Page 140: Part 5 Operation Manual

    SiBE121021_C Part 5 Operation Manual 1. System Configuration................129 2. RA Indoor Unit..................130 2.1 FTXG, CTXG Series - ARC466A1 ............130 2.2 FTXS, FVXS Series - ARC452A1, A3 ..........154 2.3 ATXS, FLK(X)S, FDK(X)S Series - ARC433B67, B68, B69, B76 ..190 3. SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series.......212 3.1 BRC1D528 ...................212 3.2 BRC1E51A7 ..................227 3.3 BRC7E530W/531W, BRC7F532F/533F, BRC7EA63W/66....272...

  • Page 141: System Configuration

    SiBE121021_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 142: Ra Indoor Unit

    RA Indoor Unit SiBE121021_C 2. RA Indoor Unit FTXG, CTXG Series - ARC466A1 2.1.1 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...
  • Page 143 SiBE121021_C RA Indoor Unit 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 144: Name Of Parts

    RA Indoor Unit SiBE121021_C 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 145 SiBE121021_C RA Indoor Unit 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 146: Fan Operation

    RA Indoor Unit SiBE121021_C 2.1.2 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 147: Operating Conditions

    SiBE121021_C RA Indoor Unit 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 148 RA Indoor Unit SiBE121021_C 2.1.3 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 149 SiBE121021_C RA Indoor Unit 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 150 RA Indoor Unit SiBE121021_C 2.1.4 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 151 SiBE121021_C RA Indoor Unit 2.1.5 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 152 RA Indoor Unit SiBE121021_C 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 153 SiBE121021_C RA Indoor Unit 2.1.6 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 154 RA Indoor Unit SiBE121021_C 2.1.7 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 •...
  • Page 155 SiBE121021_C RA Indoor Unit 2.1.8 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 156 RA Indoor Unit SiBE121021_C 2.1.9 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 157 SiBE121021_C RA Indoor Unit 2.1.10 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 158 RA Indoor Unit SiBE121021_C 2.1.11 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 159 SiBE121021_C RA Indoor Unit 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 160 RA Indoor Unit SiBE121021_C 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 161 SiBE121021_C RA Indoor Unit 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 162 RA Indoor Unit SiBE121021_C 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 163 SiBE121021_C RA Indoor Unit 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 •...
  • Page 164 RA Indoor Unit SiBE121021_C 2.1.12 Note for Multi System Note for Multi System Multi system has one outdoor unit connected to multiple indoor units. Selecting the operation mode With the priority room setting present but A room B room inactive or not present. When more than one indoor unit is operating, priority is given to the first unit that was turned on.
  • Page 165 SiBE121021_C RA Indoor Unit COOL/HEAT mode lock The COOL/HEAT mode lock requires initial programming during installation. Please consult your authorized dealer for assistance. The COOL/HEAT mode lock sets the unit forcibly to either COOL or HEAT operation. This function is convenient when you wish to set all indoor units connected to the multi system to the same operation mode.

  • Page 166: Ftxs, Fvxs Series - Arc452A1, A3

    RA Indoor Unit SiBE121021_C FTXS, FVXS Series - ARC452A1, A3 2.2.1 Manual Contents and Reference Page Wall Mounted Type Floor Standing Type Model Series FTXS20-50G2V1B FTXS60/71GV1B FVXS25-50FV1B FTXS20-50J2V1B Read Before Operation Names of Parts Operation AUTO · DRY · COOL · HEAT · FAN Operation ★...
  • Page 167 SiBE121021_C RA Indoor Unit 2.2.2 Names of Parts FTXS20/25/35/42/50G2V1B, FTXS20/25/35/42/50J2V1B Names of parts Indoor Unit Operation Manual...
  • Page 168 RA Indoor Unit SiBE121021_C Indoor Unit 1. Air filter 12. Indoor Unit ON/OFF switch • Push this switch once to start operation. 2. Titanium Apatite Photocatalytic Push once again to stop it. Air-Purifying Filter: • The operation mode refers to the following •...
  • Page 169 SiBE121021_C RA Indoor Unit Remote Controller <Open the front cover> <ARC452A3> 1. Signal transmitter: 11. SWING button: • It sends signals to the indoor unit. • Vertical blades (louvers) 2. Display: 12. COMFORT/SENSOR button: • It displays the current settings. •...
  • Page 170 RA Indoor Unit SiBE121021_C FTXS60/71GV1B Names of Parts Indoor Unit Operation Manual...
  • Page 171 SiBE121021_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 Push once again to stop it. air-purifying filter: • The operation mode refers to the following •These filters are attached to the inside of table.

  • Page 172: Names Of Parts

    RA Indoor Unit SiBE121021_C Names of Parts Remote Controller <Open the front cover> <ARC452A3> 1. Signal transmitter: 10. SWING button: • It sends signals to the indoor unit. • Flaps (horizontal blades) 2. Display (LCD): 11. SWING button: • Louvers (vertical blades) •...

  • Page 173: Opening The Front Panel

    SiBE121021_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 174 RA Indoor Unit SiBE121021_C Indoor Unit 1. Titanium Apatite Photocatalytic • The operation mode refers to the following Air-Purifying Filter: table. • These filters are attached to the inside of Temperature Airflow Model Mode the air filters. setting rate 2. Air outlet COOLING COOL 22˚C...
  • Page 175 SiBE121021_C RA Indoor Unit Remote Controller <Open the lid> <ARC452A1> 1. Signal transmitter: 9. ECONO button: ECONO operation • It sends signals to the indoor unit. 10. SWING button: 2. Display: • Adjusting the Airflow Direction • It displays the current settings. (In this illustration, each section is shown 11.
  • Page 176 RA Indoor Unit SiBE121021_C 2.2.3 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 177 SiBE121021_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 178 RA Indoor Unit SiBE121021_C 2.2.4 Adjusting the Airflow Direction FTXS20/25/35/42/50G2V1B, FTXS20/25/35/42/50J2V1B 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 179 SiBE121021_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 180 RA Indoor Unit SiBE121021_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 181 SiBE121021_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 182 RA Indoor Unit SiBE121021_C FVXS25/35/50FV1B Adjusting the Airflow Direction You can adjust the airflow 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 183 SiBE121021_C RA Indoor Unit Airflow 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 184 RA Indoor Unit SiBE121021_C 2.2.5 COMFORT AIRFLOW and INTELLIGENT EYE Operation FTXS20/25/35/42/50G2V1B, FTXS20/25/35/42/50J2V1B 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 185 SiBE121021_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 186 RA Indoor Unit SiBE121021_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 187 SiBE121021_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 188 RA Indoor Unit SiBE121021_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 189 SiBE121021_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 190 RA Indoor Unit SiBE121021_C 2.2.6 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 191 SiBE121021_C RA Indoor Unit 2.2.7 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 192 RA Indoor Unit SiBE121021_C 2.2.8 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 193 SiBE121021_C RA Indoor Unit 2.2.9 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 194 RA Indoor Unit SiBE121021_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. 2. Press “SELECT button” until the time setting reaches the point you like.
  • Page 195 SiBE121021_C RA Indoor Unit 2.2.10 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 196 RA Indoor Unit SiBE121021_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 197 SiBE121021_C RA Indoor Unit WEEKLY TIMER Operation 8. 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 198 RA Indoor Unit SiBE121021_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 199 SiBE121021_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 200 RA Indoor Unit SiBE121021_C 2.2.11 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 room Outdoor unit room room room Selecting the operation mode Living Living Living...
  • Page 201 SiBE121021_C RA Indoor Unit Note for Multi System Priority Room Setting The Priority Room Setting requires initial programming during installation. Please consult your retailer or dealer for assistance. The room designated as the Priority Room takes priority in the following situations; 1.

  • Page 202: Atxs, Flk(X)S, Fdk(X)S Series - Arc433B67, B68, B69, B76

    RA Indoor Unit SiBE121021_C ATXS, FLK(X)S, FDK(X)S Series - ARC433B67, B68, B69, 2.3.1 Manual Contents and Reference Page Floor / Ceiling Suspended Dual Wall Mounted Type Duct Connected Type Type Model Series FDK(X)S25/35EAVMB ATXS20-50G2V1B FLK(X)S25-60BAVMB FDK(X)S50/60CVMB Read Before Operation Remote Controller Operation AUTO ·...
  • Page 203 SiBE121021_C RA Indoor Unit 2.3.2 Remote Controller ATXS20/25/35/42/50G2V1B Remote Controller < > ARC433A85 1. Signal transmitter: 8. QUIET button: OUTDOOR UNIT QUIET • It sends signals to the indoor unit. operation 9. FAN setting button: 2. Display: • It selects the airflow rate setting. •...
  • Page 204 RA Indoor Unit SiBE121021_C FLK(X)S25/35/50/60BAVMB 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 205 SiBE121021_C RA Indoor Unit FDK(X)S25/35EAVMB, FDK(X)S50/60CVMB 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 206 RA Indoor Unit SiBE121021_C 2.3.3 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 207 SiBE121021_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 208 RA Indoor Unit SiBE121021_C 2.3.4 Adjusting the Airflow Direction ATXS20/25/35/42/50G2V1B 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 209 SiBE121021_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 210 RA Indoor Unit SiBE121021_C FLK(X)S25/35/50/60BAVMB 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 211 SiBE121021_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 212 RA Indoor Unit SiBE121021_C 2.3.5 COMFORT AIRFLOW Operation COMFORT AIRFLOW Operation The flow of air will be in the upward direction while in cooling mode and in the downward direction while in heating mode, which will provide a comfortable wind that will not come in direct contact with people.
  • Page 213 SiBE121021_C RA Indoor Unit 2.3.6 INTELLIGENT EYE Operation INTELLIGENT EYE Operation “INTELLIGENT EYE” is the infrared sensor which detects the human movement. To start INTELLIGENT EYE operation 1. Press “COMFORT/SENSOR button” and select “ ” on the LCD. • Each time the “COMFORT/SENSOR button”...
  • Page 214 RA Indoor Unit SiBE121021_C INTELLIGENT EYE Operation “INTELLIGENT EYE” is useful for Energy Saving Energy saving operation • Change the temperature –2˚C in heating / +2˚C in cooling / +2˚C in dry mode from set temperature. • Decrease the airflow rate slightly in FAN mode only. If no presence detected in the room for 20 minutes.
  • Page 215 SiBE121021_C RA Indoor Unit 2.3.7 POWERFUL Operation POWERFUL Operation POWERFUL operation quickly maximizes the cooling (heating) effect in any operation mode. You can get the maximum capacity. To start POWERFUL operation 1. Press “POWERFUL button”. • POWERFUL operation ends in 20minutes. Then the system automatically operates again with the previous settings which were used before POWERFUL operation.
  • Page 216 RA Indoor Unit SiBE121021_C 2.3.8 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 217 SiBE121021_C RA Indoor Unit 2.3.9 ECONO Operation ECONO Operation ECONO operation is a function which enables efficient operation by limiting the maximum power consumption value. To start ECONO operation 1. Press “ECONO button” . • “ ”is displayed on the LCD. To cancel ECONO operation 2.
  • Page 218 RA Indoor Unit SiBE121021_C 2.3.10 HOME LEAVE Operation HOME LEAVE Operation HOME LEAVE operation is a function which allows you to record your preferred temperature and air flow rate settings. To start HOME LEAVE operation 1. Press “HOME LEAVE button”. •...
  • Page 219 SiBE121021_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 220 RA Indoor Unit SiBE121021_C 2.3.11 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 221 SiBE121021_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. 2. Press “TIMER Setting button” until the time setting reaches the point you like.
  • Page 222 RA Indoor Unit SiBE121021_C 2.3.12 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 room 1.
  • Page 223 SiBE121021_C RA Indoor Unit Priority Room Setting The Priority Room Setting requires initial programming during installation. Please consult your retailer or dealer for assistance. The room designated as the Priority Room takes priority in the following situations; 1. Operation Mode Priority. As the operation mode of the Priority Room takes precedence, the user can select a different operation mode from other rooms.

  • Page 224: Sa Indoor Unit - Ffq, Fcq, Fdbq, Fbq, Fhq Series

    SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C 3. SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series BRC1D528 23 7 Operation Manual...
  • Page 225 SiBE121021_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series Start Operation Manual...
  • Page 226 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C 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 227 SiBE121021_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series LEAVE HOME AIR CLEANING ICON The leave home function prevents the room This icon indicates that the air cleaning unit (option) is temperature from dropping when the occupants are operational.
  • Page 228 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C 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 229 SiBE121021_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series AIR FILTER CLEANING TIME ICON RESET SCHEDULE TIMER BUTTON 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 230 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C 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 In this mode, air only circulates without heating or the system lowers and the system goes into defrost cooling.
  • Page 231 SiBE121021_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series 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 232 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C 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 233 SiBE121021_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series 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 234 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C 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 235 SiBE121021_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series 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 236 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C 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 237 SiBE121021_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series 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 238 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C 8. Troubleshooting I WANT TO DELETE ONE OR MORE 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 239: Brc1E51A7

    SiBE121021_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series BRC1E51A7 Names and Functions 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. On/Off button 3.
  • Page 240 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C 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 241 SiBE121021_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series 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 242: Operation Mode

    SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C “Error: Press Menu Button.” 1. Operation mode “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 243 SiBE121021_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series 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 244 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C 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 245 SiBE121021_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series • 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 246 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C 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...
  • Page 247 • 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 248 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C 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 249: Program Dry

    SiBE121021_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series 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 250 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C 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 251 SiBE121021_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series 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 252 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C 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 253: Key Lock

    SiBE121021_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series 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 254 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C 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 255 SiBE121021_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series 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 256 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C 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 257 SiBE121021_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series 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 258 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C 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 259 SiBE121021_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series • 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 260: Airflow Direction

    SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C 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 261 SiBE121021_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series 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 262 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C 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 263 SiBE121021_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series • 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 264: Ventilation Mode

    SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C 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 265 SiBE121021_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series 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 266: Schedule Timer

    SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C 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 267 SiBE121021_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series • 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.switch on the installation at a scheduled time,...
  • Page 268 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C 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 269 SiBE121021_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series • 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 270: Holiday Setting

    SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C 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 271 SiBE121021_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series • 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 272 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C 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 273 SiBE121021_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series 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 274 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C 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 275: Convenient Functions

    SiBE121021_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series 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 276 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C Menu Manipulation Display changeover 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 277 SiBE121021_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series 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 278: Clock Setting

    SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C 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 279 SiBE121021_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series • 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 280 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 281 SiBE121021_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series • 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 282 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C 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 283: Useful Information

    SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series 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 284: Brc7E530W/531W, Brc7F532F/533F, Brc7Ea63W/66

    SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C BRC7E530W/531W, BRC7F532F/533F, BRC7EA63W/66 ★ The illustrations of indoor unit are for FFQ model as representative. COOL/HEAT CHANGEOVER REMOTE CONTROL SWITCH Operation Manual...
  • Page 285 SiBE121021_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series 2. 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 286 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C RECEIVER 3. 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 287: 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 288: Operation Procedure

    • This system does not go into operation if • Operating procedure varies with heat 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 289 SiBE121021_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series • 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 290 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 drying, while the flaps are facing downward, air flow direction may change unexpectedly.
  • Page 291 SiBE121021_C SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series NOTES TIMER MODE START/ • When the timer is programmed to stop the STOP system after 3 hours and start the system after 4 hours, the system will stop after 3 Press the TIMER MODE START/STOP hours and then 1 hour later the system will button several times and select the...
  • Page 292 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C 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 “ ”...
  • Page 293 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 controller the run lamp on the indoor unit starts blinking.
  • Page 294 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C 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 295 Notify and inform the model name and what as “1”) the malfunction code indicates to your Daikin 2. The system operates but it does not dealer. sufficiently cool or heat.

  • Page 296: Part 6 Service Diagnosis

    SiBE121021_C Part 6 Service Diagnosis 1. Troubleshooting with LED ..............286 1.1 Indoor Unit....................286 1.2 Outdoor Unit ..................288 2. Problem Symptoms and Measures .............289 3. Service Check Function ..............290 3.1 RA Indoor Unit - F(C)TXG, FTXS, ATXS, FVXS, FLK(X)S, FDK(X)S Series ..............290 3.2 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series......299 4.
  • Page 297 SiBE121021_C 7.8 High Pressure Control in Cooling ............341 7.9 Compressor Sensor System Abnormality ..........343 7.10 Position Sensor Abnormality ..............345 7.11 CT or Related Abnormality ..............347 7.12 Thermistor or Related Abnormality (Outdoor Unit).......349 7.13 Electrical Box Temperature Rise............351 7.14 Radiation Fin Temperature Rise ............353 7.15 Output Overcurrent Detection ..............355 7.16 Refrigerant Shortage ................357 7.17 Low-voltage Detection or Over-voltage Detection........359...

  • Page 298: Troubleshooting With Led

    Troubleshooting with LED SiBE121021_C 1. Troubleshooting with LED Indoor Unit 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.
  • Page 299 SiBE121021_C Troubleshooting with LED BRC1D528 Operation lamp (red) (R12851) BRC1E51A7 Operation lamp (green) The error or warning message also blinks on the basic screen. (R12852) BRC7E530W/531W, BRC7F532F/533F, BRC7EA63W/66 In case of wireless remote controller, a signal receiver PCB and a display PCB are installed on indoor unit.

  • Page 300: Outdoor Unit

    Troubleshooting with LED SiBE121021_C Outdoor Unit The outdoor unit has one green LED (LED A) on the PCB. When the LED A blinks, the microcomputer works in order. Service monitor PCB LED A LED A LED 1 LED 1 LED 2 LED 2 LED 3 LED 3...

  • Page 301: Problem Symptoms And Measures

    SiBE121021_C Problem Symptoms and Measures 2. Problem Symptoms and Measures Problem Symptom Check Item Details of Measure Reference Page None of the units operates. Check the power supply. Check if the rated voltage is supplied. — Check the type of the indoor units. Check if the indoor unit type is compatible with —...

  • Page 302: Service Check Function

    Service Check Function SiBE121021_C 3. Service Check Function RA Indoor Unit - F(C)TXG, FTXS, ATXS, FVXS, FLK(X)S, FDK(X)S Series 3.1.1 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 303 SiBE121021_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 304 Service Check Function SiBE121021_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 305 SiBE121021_C Service Check Function 3.1.2 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 > (R14554) 2.
  • Page 306 Service Check Function SiBE121021_C Check Method 2 1. Press the 3 buttons (TEMP▲, TEMP▼, MODE) at the same time. (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 307 SiBE121021_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 308 Service Check Function SiBE121021_C 3.1.3 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 < ARC433 Series > (R14555) 2.
  • Page 309 SiBE121021_C Service Check Function Check Method 2 1. Press the center of the TEMP button and the MODE button at the same time. (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 310 Service Check Function SiBE121021_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 311: Sa Indoor Unit - Ffq, Fcq, Fdbq, Fbq, Fhq Series

    SiBE121021_C Service Check Function SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series 3.2.1 Relations between Modes BRC1D528, BRC7E530W/531W, BRC7F532F/533F, BRC7EA63W/66 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 312 Service Check Function SiBE121021_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 313 SiBE121021_C Service Check Function 3.2.2 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 314 Service Check Function SiBE121021_C 3.2.3 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 315 SiBE121021_C Service Check Function 3.2.4 BRC7E530W/531W, BRC7F532F/533F, BRC7EA63W/66 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 (R14392) Press the UP or DOWN button and change the UNIT No.
  • Page 316 Service Check Function SiBE121021_C Step Action Press the MODE button. The left “0” (upper digit) indication of the error code blinks. MODE button (R14394) Press the UP or DOWN button to change the error code upper digit until the receiver of the remote controller starts to beep.
  • Page 317 SiBE121021_C Service Check Function Step Action Press the MODE button. The right “0” (lower digit) indication of the error code blinks. MODE button (R14396) 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 318: Code Indication On Remote Controller

    Code Indication on Remote Controller SiBE121021_C 4. Code Indication on Remote Controller RA Indoor Unit - F(C)TXG, FTXS, ATXS, FVXS, FLK(X)S, FDK(X)S Series Error Codes Description Reference Page Normal condition — Indoor unit PCB abnormality Freeze-up protection control or heating peak-cut control DC motor (wall, floor standing) Fan motor or related abnormality AC motor (duct, floor / ceiling)

  • Page 319: Outdoor Unit

    SiBE121021_C Code Indication on Remote Controller Outdoor Unit : ON, : OFF, : Blinks Green : Blinks in normal condition Red : OFF in normal condition Outdoor Unit LED Indication Error Codes Description Reference Page Green 5 ★ h 00 Normal condition —...

  • Page 320: Troubleshooting For Ra Indoor Unit - F(C)Txg, Ftxs, Atxs, Fvxs, Flk(X)S, Fdk(X)S Series

    Troubleshooting for RA Indoor Unit - F(C)TXG, FTXS, ATXS, FVXS, FLK(X)S, FDK(X)S Series SiBE121021_C 5. Troubleshooting for RA Indoor Unit - F(C)TXG, FTXS, ATXS, FVXS, FLK(X)S, FDK(X)S Series 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...

  • Page 321: Freeze-Up Protection Control Or Heating Peak-Cut Control

    SiBE121021_C Troubleshooting for RA Indoor Unit - F(C)TXG, FTXS, ATXS, FVXS, FLK(X)S, FDK(X)S Series 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.
  • Page 322 Troubleshooting for RA Indoor Unit - F(C)TXG, FTXS, ATXS, FVXS, FLK(X)S, FDK(X)S Series SiBE121021_C Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.01 Check the air passage. Refer to P.362 Is there any short circuit? Provide sufficient air passage.

  • Page 323: Fan Motor Or Related Abnormality

    SiBE121021_C Troubleshooting for RA Indoor Unit - F(C)TXG, FTXS, ATXS, FVXS, FLK(X)S, FDK(X)S Series Fan Motor or Related Abnormality 5.3.1 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.
  • Page 324 Troubleshooting for RA Indoor Unit - F(C)TXG, FTXS, ATXS, FVXS, FLK(X)S, FDK(X)S Series SiBE121021_C Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.02 Turn off the power supply Refer to P.363 and rotate the fan by hand.
  • Page 325 SiBE121021_C Troubleshooting for RA Indoor Unit - F(C)TXG, FTXS, ATXS, FVXS, FLK(X)S, FDK(X)S Series 5.3.2 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 326: Thermistor Or Related Abnormality (Indoor Unit)

    Troubleshooting for RA Indoor Unit - F(C)TXG, FTXS, ATXS, FVXS, FLK(X)S, FDK(X)S Series SiBE121021_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...

  • Page 327: Front Panel Open / Close Fault (Ftxg And Ctxg Series)

    SiBE121021_C Troubleshooting for RA Indoor Unit - F(C)TXG, FTXS, ATXS, FVXS, FLK(X)S, FDK(X)S Series Front Panel Open / Close Fault (FTXG and CTXG Series) Remote Controller Display Method of Malfunction Detection Malfunction If the error repeats twice, the system is shut down. Decision Conditions Supposed...

  • Page 328: Signal Transmission Error (Between Indoor Unit And Outdoor Unit)

    Troubleshooting for RA Indoor Unit - F(C)TXG, FTXS, ATXS, FVXS, FLK(X)S, FDK(X)S Series SiBE121021_C Signal Transmission Error (between Indoor Unit and Outdoor Unit) Remote Controller Display Method of The data received from the outdoor unit in indoor unit-outdoor unit signal transmission is checked whether it is normal.
  • Page 329 SiBE121021_C Troubleshooting for RA Indoor Unit - F(C)TXG, FTXS, ATXS, FVXS, FLK(X)S, FDK(X)S Series Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.11 Check the indoor unit - outdoor Refer to P.363 unit connection wires.

  • Page 330: Unspecified Voltage (Between Indoor Unit And Outdoor Unit)

    Troubleshooting for RA Indoor Unit - F(C)TXG, FTXS, ATXS, FVXS, FLK(X)S, FDK(X)S Series SiBE121021_C Unspecified Voltage (between Indoor Unit and Outdoor Unit) Remote Controller Display Method of The supply power is detected for its requirements (different from pair type and multi type) by the indoor / outdoor transmission signal.

  • Page 331: Troubleshooting For Sa Indoor Unit - Ffq, Fcq, Fdbq, Fbq, Fhq Series

    SiBE121021_C Troubleshooting for SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series 6. Troubleshooting for SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series Indoor Unit PCB Abnormality Remote Controller Display Method of The system checks the data from EEPROM. Malfunction Detection Malfunction...

  • Page 332: Drain Water Level System Abnormality

    Troubleshooting for SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_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...
  • Page 333 SiBE121021_C Troubleshooting for SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series 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?

  • Page 334: Fan Motor Or Related Abnormality

    Troubleshooting for SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C Fan Motor or Related Abnormality 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 335 SiBE121021_C Troubleshooting for SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series Troubleshooting FHQ Series Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check the connections of X20A and X26A.

  • Page 336: Swing Motor Lock (Fhq Series)

    Troubleshooting for SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C 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 337: Drain System Abnormality

    SiBE121021_C Troubleshooting for SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series 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...

  • Page 338: Thermistor Or Related Abnormality

    Troubleshooting for SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C Thermistor or Related Abnormality Remote The table below describes the 2 thermistor abnormalities. Controller Error Description Display Defective indoor heat exchanger thermistor system Defective room temperature thermistor system Method of Malfunction detection is carried out by the temperature detected by thermistor.
  • Page 339 SiBE121021_C Troubleshooting for SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check the connector connection. Is it connected properly? Correct the connection.

  • Page 340: Remote Controller Thermistor Abnormality

    Troubleshooting for SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C Remote Controller Thermistor Abnormality Remote Controller Display Method of Even if remote controller thermistor is malfunctioning, the system can operate with the system thermistor. Malfunction Malfunction detection is carried out by the temperature detected by the remote controller Detection thermistor.

  • Page 341: Signal Transmission Error

    SiBE121021_C Troubleshooting for SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series Signal Transmission Error (between Indoor Unit and Remote Controller) Remote Controller Display Method of Microcomputer checks if transmission between indoor unit and remote controller is normal. Malfunction Detection Malfunction The error is generated when the micro-processor detects that the transmission between the...

  • Page 342: Signal Transmission Error

    Troubleshooting for SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C Signal Transmission Error (between MAIN Remote Controller and SUB Remote Controller) Remote Controller Display Method of In case of controlling with 2 remote controllers, check the system using micro-computer if signal transmission between indoor unit and remote controller (main and sub) is normal.

  • Page 343: Field Setting Abnormality

    SiBE121021_C Troubleshooting for SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series 6.10 Field Setting Abnormality Remote Controller Display Method of Malfunction Detection Malfunction Incorrect field setting Decision Conditions Supposed Defective indoor unit PCB Defective outdoor unit PCB Causes Defective power supply PCB Indoor-outdoor, indoor-indoor unit transmission wiring Defective remote controller wiring...
  • Page 344 Troubleshooting for SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series SiBE121021_C Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Is the remote controller connected to Connect the remote controller one or more indoor correctly.

  • Page 345: Troubleshooting For Outdoor Unit

    SiBE121021_C Troubleshooting for Outdoor Unit 7. Troubleshooting for Outdoor Unit Anti-icing Function Remote Controller Display Outdoor Unit LED Display Method of During cooling operation, indoor unit icing is detected by checking the temperatures sensed by the indoor heat exchanger thermistor and room temperature thermistor that are located in a Malfunction shut-down room.
  • Page 346 Troubleshooting for Outdoor Unit SiBE121021_C Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.01 Check the wiring and piping. Refer to P.362 Check No.12 Wrong wiring or Activate the wiring error check piping? Refer to P.364...

  • Page 347: Outdoor Unit Pcb Abnormality

    SiBE121021_C Troubleshooting for Outdoor Unit Outdoor Unit PCB Abnormality Remote Controller Display Outdoor Unit LED Display Method of Detect within the program of the microcomputer. Malfunction Detection Malfunction The program of the microcomputer is in abnormal running order. Decision Conditions Supposed Noise Momentary fall of voltage...

  • Page 348: Ol Activation (Compressor Overload)

    Troubleshooting for Outdoor Unit SiBE121021_C OL Activation (Compressor Overload) Remote Controller Display Outdoor Unit LED Display Method of A compressor overload is detected through compressor OL. Malfunction Detection Malfunction If the error repeats twice, the system is shut down. Reset condition: Continuous run for about 60 minutes without any other error Decision ∗...

  • Page 349: Compressor Lock

    SiBE121021_C Troubleshooting for Outdoor Unit Compressor Lock Remote Controller Display Outdoor Unit LED Display Method of A compressor lock is detected by checking the compressor running condition through the position detection circuit. Malfunction Detection Malfunction Judging from the current waveform generated when high-frequency voltage is applied to the compressor.

  • Page 350: Dc Fan Lock

    Troubleshooting for Outdoor Unit SiBE121021_C DC Fan Lock Remote Controller Display Outdoor Unit LED Display Method of An error is determined with the high-voltage fan motor rotation speed detected by the Hall IC. Malfunction Detection Malfunction The fan does not start in 30 seconds even when the fan motor is running. If the error repeats 16 times, the system is shut down.

  • Page 351: Input Overcurrent Detection

    SiBE121021_C Troubleshooting for Outdoor Unit Input Overcurrent Detection Remote Controller Display Outdoor Unit LED Display Method of Detected by checking the input current value Malfunction Detection Malfunction The input current is at a certain value (depending on the condition) for 2.5 seconds. The compressor halts if the error occurs, and restarts automatically after 3-minute standby.

  • Page 352: Discharge Pipe Temperature Control

    Troubleshooting for Outdoor Unit SiBE121021_C Discharge Pipe Temperature Control Remote Controller Display Outdoor Unit LED Display Method of Detected by the discharge pipe thermistor Malfunction Detection Malfunction If the temperature detected by the discharge pipe thermistor rises above °C, the compressor stops.

  • Page 353: High Pressure Control In Cooling

    SiBE121021_C Troubleshooting for Outdoor Unit High Pressure Control in Cooling Remote Controller Display Outdoor Unit LED Display Method of High-pressure control (operation halt, frequency drop, etc.) is activated in cooling mode if the temperature sensed by the outdoor heat exchanger thermistor exceeds the limit. Malfunction Detection Malfunction...
  • Page 354 Troubleshooting for Outdoor Unit SiBE121021_C Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.01 Check the installation space. Refer to P.362 Check No. 17 Check No.12 Check the Change the installation Refer to P.364 installation condition.

  • Page 355: Compressor Sensor System Abnormality

    SiBE121021_C Troubleshooting for Outdoor Unit Compressor Sensor System Abnormality Remote Controller Display Outdoor Unit LED Display Method of Fault condition is identified by the supply voltage and the DC voltage which is detected before the compressor startup. Malfunction Fault condition is identified by the compressor current which is detected right after the Detection compressor startup.
  • Page 356 Troubleshooting for Outdoor Unit SiBE121021_C Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Turn off the power. Reactor connection check Connection OK? Connect properly. Compressor connection check Connect properly. Connection OK? Disconnect the reactor from the outdoor unit PCB and measure the resistance...

  • Page 357: Position Sensor Abnormality

    SiBE121021_C Troubleshooting for Outdoor Unit 7.10 Position Sensor Abnormality Remote Controller Display Outdoor Unit LED Display Method of A compressor startup failure is detected by checking the compressor running condition through the position detection circuit. Malfunction Detection Malfunction If the error repeats 8 times, the system is shut down. Reset condition: Continuous run for about 5 minutes without any other error Decision Conditions...
  • Page 358 Troubleshooting for Outdoor Unit SiBE121021_C Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.15 Refer to P.366 Turn off the power. Check the power supply voltage. Voltage as rated? Correct the power supply.

  • Page 359: Ct Or Related Abnormality

    SiBE121021_C Troubleshooting for Outdoor Unit 7.11 CT or Related Abnormality Remote Controller Display Outdoor Unit LED Display Method of A CT or related error is detected by checking the compressor running frequency and CT- detected input current. Malfunction Detection Malfunction The compressor running frequency is more than Hz and input current is below Decision...
  • Page 360 Troubleshooting for Outdoor Unit SiBE121021_C Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.15 Turn off the power and turn it on Refer to P.366 again. Check No.21 Start operation.

  • Page 361: Thermistor Or Related Abnormality (Outdoor Unit)

    SiBE121021_C Troubleshooting for Outdoor Unit 7.12 Thermistor or Related Abnormality (Outdoor Unit) H9 , J3 , J6 , J8 , J9 , P4 Remote Controller Display Outdoor Unit LED Display Method of This type of error is detected by checking the thermistor input voltage to the microcomputer. A thermistor error is detected by checking the temperature sensed by each thermistor.
  • Page 362 Troubleshooting for Outdoor Unit SiBE121021_C In case of “ H9 ” “ J3 ” “ J6 ” “ J8 ” “ J9 ” Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.01 Refer to P.362 Turn on the power again.

  • Page 363: Electrical Box Temperature Rise

    SiBE121021_C Troubleshooting for Outdoor Unit 7.13 Electrical Box Temperature Rise Remote Controller Display Outdoor Unit LED Display Method of An electrical box temperature rise is detected by checking the radiation fin thermistor with the compressor off. Malfunction Detection Malfunction With the compressor off, the radiation fin temperature is above °C.
  • Page 364 Troubleshooting for Outdoor Unit SiBE121021_C Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.17 WARNING Turn off the power and turn it on Refer to P.368 again. To cool the electrical components, the outdoor fan starts when the radiation fin temperature rises...

  • Page 365: Radiation Fin Temperature Rise

    SiBE121021_C Troubleshooting for Outdoor Unit 7.14 Radiation Fin Temperature Rise Remote Controller Display Outdoor Unit LED Display Method of A radiation fin temperature rise is detected by checking the radiation fin temperature with the compressor on. Malfunction Detection Malfunction The radiation fin temperature with the compressor on is above °C.
  • Page 366 Troubleshooting for Outdoor Unit SiBE121021_C Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.17 (Precaution before turning on the power again) Refer to P.368 Make sure the power has been off for at least 30 seconds. Check No.19 Turn off the power and turn it on again...

  • Page 367: Output Overcurrent Detection

    SiBE121021_C Troubleshooting for Outdoor Unit 7.15 Output Overcurrent Detection Remote Controller Display Outdoor Unit LED Display Method of An output overcurrent is detected by checking the current that flows in the inverter DC section. Malfunction Detection Malfunction A position signal error occurs while the compressor is running. A speed error occurs while the compressor is running.
  • Page 368 Troubleshooting for Outdoor Unit SiBE121021_C Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.15 ∗ An output overcurrent may result from wrong internal wiring. If the system is interrupted by an output overcurrent after the wires have been disconnected and reconnected for part replacement, check the Refer to P.366 wiring again.

  • Page 369: Refrigerant Shortage

    SiBE121021_C Troubleshooting for Outdoor Unit 7.16 Refrigerant Shortage Remote Controller Display Outdoor Unit LED Display Method of Refrigerant shortage detection I : Refrigerant shortage is detected by checking the input current value and the compressor output Malfunction frequency. If the refrigerant is short, the input current is smaller than the normal value. Detection Refrigerant shortage detection II : Refrigerant shortage is detected by checking the discharge pipe temperature and the opening of...
  • Page 370 Troubleshooting for Outdoor Unit SiBE121021_C Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.01 Refer to P.362 Any thermistor Replace them in position. disconnected? ∗ Discharge pipe thermistor ∗...

  • Page 371: Low-Voltage Detection Or Over-Voltage Detection

    SiBE121021_C Troubleshooting for Outdoor Unit 7.17 Low-voltage Detection or Over-voltage Detection Remote Controller Display Outdoor Unit LED Display Method of Low-voltage detection: An abnormal voltage drop is detected by the DC voltage detection circuit. Malfunction Detection Over-voltage detection: An abnormal voltage rise is detected by the over-voltage detection circuit. Malfunction Low-voltage detection: The voltage detected by the DC voltage detection circuit is below 150 V for 0.1 second.

  • Page 372: Signal Transmission Error (On Outdoor Unit Pcb)

    Troubleshooting for Outdoor Unit SiBE121021_C 7.18 Signal Transmission Error (on Outdoor Unit PCB) Remote Controller Display Outdoor Unit LED Display Method of Communication error between microcomputer mounted on the main PCB and PM1. Malfunction Detection Malfunction The abnormality is determined when the data sent from the PM1 can not be received for 9 seconds.

  • Page 373: Anti-Icing Function In Other Rooms / Unspecified Voltage (Between Indoor And Outdoor Units)

    SiBE121021_C Troubleshooting for Outdoor Unit 7.19 Anti-icing Function in Other Rooms / Unspecified Voltage (between Indoor and Outdoor Units) UA , UH Remote Controller Display Outdoor Unit LED Display Method of A wrong connection is detected by checking the combination of indoor and outdoor units on the microcomputer.

  • Page 374: Check

    Check SiBE121021_C 8. Check Thermistor Resistance Check Check No.01 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 table and the graph below.

  • Page 375: Fan Motor Connector Check

    SiBE121021_C Check Fan Motor Connector Check Check No.02 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. Check rotation command voltage output (pins 4 - 2). 5.

  • Page 376: Electronic Expansion Valve Check

    Check SiBE121021_C Electronic Expansion Valve Check Check No.12 Conduct the followings to check the electronic expansion valve (EV). 1. Check to see if the EV connector is correctly inserted in the PCB. Match the EV unit number and the connector number. 2.

  • Page 377: Four Way Valve Performance Check

    SiBE121021_C Check Four Way Valve Performance Check Check No.13 Turn off the power and turn it on again. ∗ Four way valve coil Start heating operation. Cooling / Dry : No continuity Heating : Continuity S80 voltage at 220 - 240 Replace the outdoor unit VAC with compressor PCB.

  • Page 378: Inverter Checker" Check

    Check SiBE121021_C “Inverter Checker” Check Check No.15 Characteristics If abnormal stop occurs due to compressor startup failure or overcurrent output when using inverter unit, it is difficult to judge whether it is caused by the compressor failure or other failure (control PCB, power module, etc.).

  • Page 379: Rotation Pulse Check On The Outdoor Unit Pcb

    SiBE121021_C Check Diagnose method (Diagnose according to 6 LEDs lighting status.) (1) When all the LEDs are lit uniformly, the compressor is defective. → Replace the compressor. (2) When the LEDs are not lit uniformly, check the power module. → Refer to Check No.13.

  • Page 380: Installation Condition Check

    Check SiBE121021_C 8.10 Installation Condition Check Check No.17 Installation condition check Check the allowable Abnormal Change the installation dimensions of the air suction and discharge area. location or direction. Normal Does the discharged air from other outdoor unit cause Change the installation an increase of the location or direction.

  • Page 381: Outdoor Fan System Check

    SiBE121021_C Check 8.12 Outdoor Fan System Check Check No.19 Check the outdoor unit fan system. Fan motor lead wire Outdoor unit fan running? Reconnect the connector. connector disconnected? Outdoor unit fan system Go to Check No. 15. functioning. (R7159) 8.13 Capacitor Voltage Check Check No.21 Before this check, be sure to check the main circuit for short circuit.

  • Page 382: Part 7 Removal Procedure

    SiBE121021_C Part 7 Removal Procedure 1. Outdoor Unit - 50~75 Class..............371 1.1 Removal of Outer Panels ..............371 1.2 Removal of Electrical Box ..............375 1.3 Removal of PCBs .................383 1.4 Removal of Outdoor Fan / Fan Motor...........388 1.5 Removal of Sound Blankets ..............390 1.6 Removal of Coils / Thermistors ............394 1.7 Removal of Distributor................397 1.8 Removal of Four Way Valve..............398...

  • Page 383: Outdoor Unit - 50~75 Class

    SiBE121021_C Outdoor Unit - 50~75 Class 1. Outdoor Unit - 50~75 Class Note: The illustrations are for heat pump models as representative. Removal of Outer Panels Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work.
  • Page 384 Outdoor Unit - 50~75 Class SiBE121021_C Step Procedure Points Remove the 6 screws of the front panel. Front panel (R12900) Remove the 1 screw of the shield plate. Shield plate (R11204) Slide the shield plate to the left to release the hooks and remove the shield plate.
  • Page 385 SiBE121021_C Outdoor Unit - 50~75 Class Step Procedure Points Lift the front panel up to unfasten the left side hooks. The front panel has 3 hooks on the left. Hook (R12901) Unfasten the right side hook and remove the Hook front panel.
  • Page 386 Outdoor Unit - 50~75 Class SiBE121021_C Step Procedure Points Remove the 4 screws of the discharge grille. Discharge grille (R12902) Remove the 2 screws of the stop valve cover. Stop valve cover (R11206) Slide the stop valve cover downward and remove it.

  • Page 387: Removal Of Electrical Box

    SiBE121021_C Outdoor Unit - 50~75 Class Removal of Electrical Box Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Disconnect the Illustrations are for 3 room harnesses.
  • Page 388 Outdoor Unit - 50~75 Class SiBE121021_C Step Procedure Points Detach the fixing tape Fixing of the electrical box tape cover. (R5512) Unfasten the 4 hooks at mark of the electrical box cover. Lift the electrical box cover up and remove it. Disconnect the connector for the fan [S70]...
  • Page 389 SiBE121021_C Outdoor Unit - 50~75 Class Step Procedure Points Release the fan motor lead wire from the Fan motor lead wire hooks. (R12903) Disconnect the 4 room models also have connectors for the [S23] (yellow) for room D. [S20] [S21] [S22] electronic expansion valve coils.
  • Page 390 Outdoor Unit - 50~75 Class SiBE121021_C Step Procedure Points Disconnect the [S40] connector for the overload protector [S40]. 10 The wire harness for the compressor is attached to the partition plate by the clamp. Partition plate Clamp (R12904) 11 Pull out the clamp with pliers.
  • Page 391 SiBE121021_C Outdoor Unit - 50~75 Class Step Procedure Points Disconnect the each [S90] [S92] [S93] connector. [S90] : Thermistors (outdoor temperature, outdoor heat exchanger, discharge pipe) [S92] : Gas pipe thermistors [S93] : Liquid pipe thermistors Disconnect the The cooling only models [S80] connector for the four have no harness for [S80].
  • Page 392 Outdoor Unit - 50~75 Class SiBE121021_C Step Procedure Points The figure shows the arrangement of the wire harnesses under the electrical box. Pull out the clamp of the thermistor lead wire. Thermistor lead wire (R12905) 2. Remove the electrical box. Remove the 2 screws of the earth terminal.
  • Page 393 SiBE121021_C Outdoor Unit - 50~75 Class Step Procedure Points Remove the 2 screws of the wiring fixture. Wiring fixture (R11181) Detach the outdoor temperature thermistor. Remove the screw on the right side of the electrical box. Removal Procedure...
  • Page 394 Outdoor Unit - 50~75 Class SiBE121021_C Step Procedure Points Remove the 1 screw in front of the electrical box. Lift up and remove the electrical box. Removal Procedure...

  • Page 395: Removal Of Pcbs

    SiBE121021_C Outdoor Unit - 50~75 Class Removal of PCBs Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the service Service monitor PCB Terminal board monitor PCB.
  • Page 396 Outdoor Unit - 50~75 Class SiBE121021_C Step Procedure Points Widen the upper hook and pull the service monitor PCB upward to remove. Refer to page 82 for detail. 2. Remove the main PCB. [AC1] [AC2] [AC1] [AC2] : for power supply Disconnect the [S10] brown...
  • Page 397 SiBE121021_C Outdoor Unit - 50~75 Class Step Procedure Points Unfasten the 3 hooks on the reactor side and slide the main PCB to the left. Release the relay harness for the compressor from the hook. Lift up the main PCB In working, be careful not to and remove it.
  • Page 398 Outdoor Unit - 50~75 Class SiBE121021_C Step Procedure Points Refer to page 81 for detail. [S70] [S40] [S20] [S21] [S22] [S23] [S80] [S101] [S51] [S93] [S90] [S92] Remove the 2 screws of the radiation fin. Clamp for reactor harness (R11207) When reassembling, make sure to use the silicon grease.
  • Page 399 SiBE121021_C Outdoor Unit - 50~75 Class Step Procedure Points 3. Remove the terminal board. Disconnect the wire harnesses from the back of the terminal board. Terminal board (back) (R12907) Unfasten the hook of the electrical box and remove the terminal board.

  • Page 400: Removal Of Outdoor Fan / Fan Motor

    Outdoor Unit - 50~75 Class SiBE121021_C Removal of Outdoor Fan / Fan Motor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the 2 screws Remove the outer panels of the fan motor fixing and plates.
  • Page 401 SiBE121021_C Outdoor Unit - 50~75 Class Step Procedure Points Open the 2 hooks and When reassembling, put the release the fan motor fan motor lead wire through lead wire. the back of the fan motor so as not to be entangled with the outdoor fan.

  • Page 402: Removal Of Sound Blankets

    Outdoor Unit - 50~75 Class SiBE121021_C Removal of Sound Blankets Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the right side Remove the outer panels panel.
  • Page 403 SiBE121021_C Outdoor Unit - 50~75 Class Step Procedure Points Lift up and remove the right side panel. 2. Remove the partition Partition plate plate. Remove the 2 screws of the partition plate. (R5575) Detach the clamp of the relay harness for the compressor.
  • Page 404 Outdoor Unit - 50~75 Class SiBE121021_C Step Procedure Points Lift up and remove the partition plate. When reassembling, make sure to fit the lower hook of the partition plate. 3. Remove the sound Since the piping ports on the blanket. sound blanket are torn easily, remove the blanket Remove the sound...
  • Page 405 SiBE121021_C Outdoor Unit - 50~75 Class Step Procedure Points Untie the fixing strings to open the sound blanket (outer) and pull it out. Sound blanket (outer) (R5583) Open the sound blanket (inner) and pull it out. Sound blanket (inner) (R5584) Removal Procedure...

  • Page 406: Removal Of Coils / Thermistors

    Outdoor Unit - 50~75 Class SiBE121021_C Removal of Coils / Thermistors Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the electronic expansion valve coils. Pull out the electronic expansion valve coils.
  • Page 407 SiBE121021_C Outdoor Unit - 50~75 Class Step Procedure Points 3. Remove the thermistors. When reassembling, meet the edge of the thermistor Open the putty and and the fixture. remove the liquid pipe thermistors. Liquid pipe thermistor (R11184) Pull out the gas pipe thermistors.
  • Page 408 Outdoor Unit - 50~75 Class SiBE121021_C Step Procedure Points Remove the discharge When reassembling, meet pipe thermistor. the edge of the thermistor Clip and the fixture. Discharge pipe thermistor (R11185) Remove the assembly of thermistors. Connector Outdoor temperature thermistor Outdoor heat exchanger thermistor Discharge pipe...

  • Page 409: Removal Of Distributor

    SiBE121021_C Outdoor Unit - 50~75 Class Removal of Distributor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the putty. Warning Be careful not to get yourself burnt with the pipes and other parts that are heated by the gas brazing machine.

  • Page 410: Removal Of Four Way Valve

    Outdoor Unit - 50~75 Class SiBE121021_C Removal of Four Way Valve Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Before working, make sure that the refrigerant Warning gas is empty in the circuit.

  • Page 411: Removal Of Compressor

    SiBE121021_C Outdoor Unit - 50~75 Class Removal of Compressor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the terminal cover. Terminal cover (R12914) Disconnect the compressor lead wires.
  • Page 412 Outdoor Unit - 50~75 Class SiBE121021_C Step Procedure Points Warning Be careful not to get yourself burnt with the pipes and other parts that are heated by the gas brazing machine. Warning If the refrigerant gas leaks during work, ventilate the room.

  • Page 413: Outdoor Unit - 80/90 Class

    SiBE121021_C Outdoor Unit - 80/90 Class 2. Outdoor Unit - 80/90 Class Note: The illustrations are for heat pump models as representative. Removal of Outer Panels Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work.
  • Page 414 Outdoor Unit - 80/90 Class SiBE121021_C Step Procedure Points Slide the suction grille Hook downward to release the 3 top hooks. (R14613) Remove the suction grille. (R6372) 2. Remove the top panel. Top panel Remove the 4 screws on the back and the 1 screw on the left side panel.
  • Page 415 SiBE121021_C Outdoor Unit - 80/90 Class Step Procedure Points Remove the 2 screws on the front and the 1 screw on the right side panel. Right side panel (R6374) Lift the top panel and remove it. (R6375) 3. Remove the right side panel.
  • Page 416 Outdoor Unit - 80/90 Class SiBE121021_C Step Procedure Points Slide the right side panel downward to release the 2 hooks on the back side. (R6377) Hook (R14614) Hook (R14615) Removal Procedure...
  • Page 417 SiBE121021_C Outdoor Unit - 80/90 Class Step Procedure Points Remove the right side panel. (R10441) 4. Remove the front panel This screw is M5 × 16 (2). Front Panel (2) Remove the 2 screws. Front Panel (1) (R10629) Removal Procedure...
  • Page 418 Outdoor Unit - 80/90 Class SiBE121021_C Step Procedure Points Slide the front panel (2) downward to release the hook. (R10374) (R6383) Remove the front panel (2). (R10375) Removal Procedure...
  • Page 419 SiBE121021_C Outdoor Unit - 80/90 Class Step Procedure Points 5. Remove the front panel Remove the discharge grille (1). and outdoor fan first to remove the front panel (1). Remove the 4 screws on the discharge grille. Front Panel (1) Discharge grille (R10376) Pull the bottom of the...
  • Page 420 Outdoor Unit - 80/90 Class SiBE121021_C Step Procedure Points Slide the discharge grille downward to release the 2 hooks at the top. (R10378) Hook (R14616) Remove the discharge grille. (R10380) Remove the nut and Nut size : M8 remove the outdoor fan. 13 mm Outdoor fan (R12301)
  • Page 421 SiBE121021_C Outdoor Unit - 80/90 Class Step Procedure Points Remove the 2 screws on the partition plate Partition plate (1) (1). (R10382) Remove the screw at the bottom left of the front panel (1). (R10383) Remove the screw at the bottom of the left side.
  • Page 422 Outdoor Unit - 80/90 Class SiBE121021_C Step Procedure Points Remove the screw at the bottom of the back side. (R6394) The front panel (1) has a hook. Lift the front panel (1). Hook (R10384) Removal Procedure...
  • Page 423 SiBE121021_C Outdoor Unit - 80/90 Class Step Procedure Points Remove the front panel (1). (R10385) Be sure to detach the front panel (1) carefully so as not to deform it. (R6396) 6. Remove the rear panel. Remove the screw on the partition plate (2).
  • Page 424 Outdoor Unit - 80/90 Class SiBE121021_C Step Procedure Points Slide the partition plate (2) to the left and remove it. (R11211) Remove the 5 screws on the wire fixing plate (upper). Wire fixing plate (upper) (R11210) Removal Procedure...
  • Page 425 SiBE121021_C Outdoor Unit - 80/90 Class Step Procedure Points Remove the wire fixing plate (upper). (R11213) Remove the 3 screws on the wire fixing plate (lower). Wire fixing plate (lower) (R11214) Remove the wire fixing plate (lower). (R11215) Removal Procedure...
  • Page 426 Outdoor Unit - 80/90 Class SiBE121021_C Step Procedure Points Pull out the holder of The holder is secured in the the outdoor clearances of the outdoor temperature thermistor. heat exchanger fins. Outdoor temperature thermistor (R10388) Release the thermistor wire from the groove Groove (R10389) Remove the 3 screws...
  • Page 427 SiBE121021_C Outdoor Unit - 80/90 Class Step Procedure Points Remove the screw on the bottom frame. (R10391) Remove the screw on the stop valve mounting plate. Stop valve mounting plate (R10392) Lift the rear panel upward to unfasten the 2 hooks. Hook Hook Hook...
  • Page 428 Outdoor Unit - 80/90 Class SiBE121021_C Step Procedure Points Remove the rear panel. (R10394) Removal Procedure...

  • Page 429: Removal Of Electrical Box

    SiBE121021_C Outdoor Unit - 80/90 Class Removal of Electrical Box Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the 2 screws to detach the earth wires.
  • Page 430 Outdoor Unit - 80/90 Class SiBE121021_C Step Procedure Points Disconnect the Pull out the clamp. connector for the four The cooling only model has [S80] way valve coil [S80]. no harness for [S80]. Clamp (R11187) Disconnect the Pull out the clamp. connectors for the 5 room models also has electronic expansion...
  • Page 431 SiBE121021_C Outdoor Unit - 80/90 Class Step Procedure Points Disconnect the Pull out the clamp. [S92] connector for the gas pipe thermistor [S92]. Clamp (R10537) Disconnect the Pull out the clamp. connector for the thermistors [S90]. [S90] Clamp (R10538) The wire harness of the thermistor is hooked under the electrical box.
  • Page 432 Outdoor Unit - 80/90 Class SiBE121021_C Step Procedure Points Disconnect the connector for the [S40] overload protector [S40]. (R10539) The wire harness for the compressor is attached to the partition plate (1) by the clamp. Partition plate Clamp (R12904) Pull out the clamp with pliers.
  • Page 433 SiBE121021_C Outdoor Unit - 80/90 Class Step Procedure Points Disconnect the relay connector of the compressor. (R6469) Remove the screw on the stop valve mounting Electrical box plate. Stop valve mounting plate (R10395) Remove the screw on the partition plate (1). Partition plate (1) (R6411) Removal Procedure...
  • Page 434 Outdoor Unit - 80/90 Class SiBE121021_C Step Procedure Points Slide the electrical box leftward to unfasten the hook on the right side of the electrical box. Hook (R10401) Lift up the electrical box and remove it. (R10402) Removal Procedure...

  • Page 435: Removal Of Pcbs

    SiBE121021_C Outdoor Unit - 80/90 Class Removal of PCBs Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the main PCB. Hook Remove the cover of Release the 4 hooks.
  • Page 436 Outdoor Unit - 80/90 Class SiBE121021_C Step Procedure Points Disconnect the [S51] [S101] : service V(yellow) W(blue) U(red) [S51] [S101] connectors. monitor PCB [S10] [S10] : terminal board [HR2](blue) (transmission) [AC2] [HR1](white) (blue) [HR1] [HR2] : reactor [AC1] [AC1] [AC2] : terminal board (brown) (power supply) [U] [V] [W] : compressor...
  • Page 437 SiBE121021_C Outdoor Unit - 80/90 Class Step Procedure Points 3. Remove the service monitor PCB. [S102] Disconnect the connectors [S52] [S102] from the service monitor PCB. [S52] Service monitor PCB (R10410) Slightly lift the top hook to detach. (R6436) Unfasten the bottom Refer to page 82 for detail.
  • Page 438 Outdoor Unit - 80/90 Class SiBE121021_C Step Procedure Points 4. Remove the terminal board. Remove the screw. Terminal board (R10411) Unfasten the hook. (R10412) Remove the terminal board. (R10413) Removal Procedure...

  • Page 439: Removal Of Fan Motor

    SiBE121021_C Outdoor Unit - 80/90 Class Removal of Fan Motor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points (R10414) Remove the 2 lower Be sure to remove the lower screws of the fan motor.

  • Page 440: Removal Of Coils / Thermistors

    Outdoor Unit - 80/90 Class SiBE121021_C Removal of Coils / Thermistors Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the electronic expansion valve coils. Pull out the electronic expansion valve coils.
  • Page 441 SiBE121021_C Outdoor Unit - 80/90 Class Step Procedure Points 2. Remove the thermistors. Pull out the gas pipe thermistors. Gas pipe thermistors (R10416) Gas pipe thermistor (R6448) Removal Procedure...
  • Page 442 Outdoor Unit - 80/90 Class SiBE121021_C Step Procedure Points Peel off the putty and pull out the liquid pipe thermistors. Liquid pipe thermistors (R10417) Liquid pipe thermistor (R6450) Pull out the outdoor heat exchanger Outdoor heat exchanger thermistor. thermistor (R10541) Removal Procedure...
  • Page 443 SiBE121021_C Outdoor Unit - 80/90 Class Step Procedure Points Remove the clip from Be careful not to lose the the outdoor heat clip. exchanger thermistor. Clip (R6452) Slightly open the sound blanket (outer). Sound blanket (outer) (R10418) Remove the sound blanket (top upper).
  • Page 444 Outdoor Unit - 80/90 Class SiBE121021_C Step Procedure Points Remove the discharge pipe thermistor. Discharge pipe thermistor (R10420) Remove the fixture. Fixture (R10430) 3. Remove the four way valve coil. Remove the screw. (R10431) Removal Procedure...
  • Page 445 SiBE121021_C Outdoor Unit - 80/90 Class Step Procedure Points Remove the four way valve coil. Four way valve coil (R10432) Removal Procedure...

  • Page 446: Removal Of Sound Blankets

    Outdoor Unit - 80/90 Class SiBE121021_C Removal of Sound Blankets Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Open the sound blanket (outer). Sound blanket (outer) (R10433) Remove the sound...
  • Page 447 SiBE121021_C Outdoor Unit - 80/90 Class Step Procedure Points Remove the sound The sound blanket is fragile. blanket (outer). Sound blanket (outer) (R10436) Remove the sound The sound blanket is fragile. blanket (top inner). Carefully pass the blanket through the discharge pipe. Sound blanket (top inner) (R10437) Open the sound blanket...
  • Page 448 Outdoor Unit - 80/90 Class SiBE121021_C Step Procedure Points Remove the sound blanket (inner). (R10439) Removal Procedure...

  • Page 449: Removal Of Compressor

    SiBE121021_C Outdoor Unit - 80/90 Class Removal of Compressor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the terminal cover. Terminal cover (R6466) Disconnect the U : red, V : yellow, W : blue U(red) compressor lead wires.

  • Page 450: Part 8 Trial Operation And Field Settings

    SiBE121021_C Part 8 Trial Operation and Field Settings 1. Pump Down Operation................439 2. Forced Operation ................440 3. Wiring Error Check Function ...............441 4. Trial Operation ..................443 4.1 RA Indoor Unit - F(C)TXG, FTXS, ATXS, FVXS, FLK(X)S, FDK(X)S Series ..............443 4.2 SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series......445 5.

  • Page 451: Pump Down Operation

    SiBE121021_C Pump Down Operation 1. Pump Down Operation Outline In order to protect the environment, be sure to conduct pump down operation when relocating or disposing the unit. Detail 1) Remove the valve caps from the liquid stop valve and the gas stop valve. 2) Carry out forced cooling operation.

  • Page 452: Forced Operation

    Forced Operation SiBE121021_C 2. Forced Operation Outline Forced operation mode includes forced cooling and forced heating. Operation mode can be selected by the operation mode switch (SW2) on the outdoor unit. Press the forced operation ON/OFF switch (SW1) on the outdoor unit to start the operation. Detail Item Forced Cooling...

  • Page 453: Wiring Error Check Function

    SiBE121021_C Wiring Error Check Function 3. Wiring Error Check Function Outline The convenient wiring error check function is designed for the microcomputer to correct wiring errors itself. If local wiring is unclear in the case of buried piping, for example, just press the wiring error check switch that is behind the right side panel of the outdoor unit.
  • Page 454 Wiring Error Check Function SiBE121021_C Basic Knowledge Refrigerant flows from Port A and on. The temperatures of the indoor heat exchanger thermistors are detected one by one to check up the matching between the piping and wiring. With this function on, freezing (crackling) noise may be heard from the indoor unit. This is not a problem.

  • Page 455: Trial Operation

    SiBE121021_C Trial Operation 4. Trial Operation RA Indoor Unit - F(C)TXG, FTXS, ATXS, FVXS, FLK(X)S, FDK(X)S 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 456 Trial Operation SiBE121021_C 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 457: Sa Indoor Unit - Ffq, Fcq, Fdbq, Fbq, Fhq Series

    SiBE121021_C Trial Operation SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series 4.2.1 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 458 Trial Operation SiBE121021_C 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 459: Field Settings

    SiBE121021_C Field Settings 5. Field Settings RA Indoor Unit - F(C)TXG, FTXS, ATXS, FVXS, FLK(X)S, FDK(X)S Series 5.1.1 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 460 Field Settings SiBE121021_C FTXS 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]. 4) Remove the electric box (1 screw). 5) Pull out the indoor heat exchanger thermistor.
  • Page 461 SiBE121021_C Field Settings < 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 462: Jumper And Switch Settings

    Field Settings SiBE121021_C 5.1.3 Jumper and Switch Settings Jumper (on indoor Function When connected When cut 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 463: Sa Indoor Unit - Ffq, Fcq, Fdbq, Fbq, Fhq Series

    SiBE121021_C Field Settings SA Indoor Unit - FFQ, FCQ, FDBQ, FBQ, FHQ Series 5.2.1 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 464 Field Settings SiBE121021_C BRC1E51A7 (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. Use the buttons to select Field setting list and push the [Menu/Enter] button (...
  • Page 465 SiBE121021_C Field Settings Wireless remote BRC7E530W/531W, BRC7F532F/533F, BRC7EA63W/66 controller UP button Mode No. Field setting mode DOWN button RESERVE button First code No. MODE button Second code No. [Inspection / Test] button (R14426) To set the field settings, you have to change: Mode No.
  • Page 466 Field Settings SiBE121021_C 5.2.2 Overview of the Field Settings First Second Code No. Mode Code Description of setting Ultra longlife Approx. Approx. filter 10,000 hrs. 5,000 hrs. Filter cleaning sign — — interval Approx. Approx. Longlife filter 2,500 hrs. 1,250 hrs. (20) Ultra longlife Long life filter type...
  • Page 467 SiBE121021_C Field Settings 5.2.3 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 468 Field Settings SiBE121021_C 5.2.4 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 469 SiBE121021_C Field Settings Wireless Remote 1. Hold down the “ ” button and the “ ” button at the same time for at least 4 seconds to enter the field setting mode. (“SETTING” is indicated on the display). Controller 2. Press the “ ”...
  • Page 470 Field Settings SiBE121021_C 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 471: Outdoor Unit

    SiBE121021_C Field Settings Outdoor Unit 5.3.1 Priority Room Setting Electronic expansion valves are controlled to provide more capacity to the prioritized room. Setting method Turn off the circuit breaker before changing the setting. Only one room can be set as the priority room (By turning on one of the SW4 on the service monitor PCB of the outdoor unit).
  • Page 472 Field Settings SiBE121021_C 5.3.2 COOL / HEAT Mode Lock Use the [S15] connector to set the unit to cooling only or heating only. Setting to heating only (H): Short-circuit pins 1 and 3 of the connector [S15]. Setting to cooling only (C): Short-circuit pins 3 and 5 of the connector [S15]. The following specifications apply to the connector housing and pins.
  • Page 473 SiBE121021_C Field Settings 5.3.3 NIGHT QUIET Mode If NIGHT QUIET mode is to be used, initial settings must be made when the unit is installed. Explain the function of NIGHT QUIET mode, as described below, to the customer, and confirm whether or not the customer wants to use NIGHT QUIET mode.

  • Page 474: Application Of Silicon Grease To A Power Transistor And A Diode Bridge

    Application of Silicon Grease to a Power Transistor and a Diode Bridge SiBE121021_C 6. Application of Silicon Grease to a Power Transistor and a Diode Bridge Applicable All outdoor units using inverter type compressor for room air conditioner. Models When the printed circuit board (PCB) of an outdoor unit is replaced, it is required that silicon grease (*1) is certainly applied to the heat radiation part (the contact point to the radiation fin) of the power transistor and diode bridge.

  • Page 475: Part 9 Appendix

    SiBE121021_C Part 9 Appendix 1. Piping Diagrams..................464 1.1 Indoor Unit....................464 1.2 Outdoor Unit ..................470 2. Wiring Diagrams..................475 2.1 Indoor Unit....................475 2.2 Outdoor Unit ..................483 Appendix...

  • Page 476: Piping Diagrams

    Piping Diagrams SiBE121021_C 1. Piping Diagrams Indoor Unit 1.1.1 Wall Mounted Type FTXG25/35JV1BW(S) CTXG50JV1BW(S) 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...
  • Page 477 SiBE121021_C Piping Diagrams FTXS60GV1B FTXS71GV1B INDOOR UNIT INDOOR UNIT ( 7.9CuT ) ( 7.9CuT ) HEAT EXCHANGER HEAT EXCHANGER THERMISTOR ON HEAT EXCH. THERMISTOR ON HEAT EXCH. CROSS FLOW FAN FIELD PIPING CROSS FLOW FAN ( 6.4CuT ) FIELD PIPING FAN MOTOR ( 6.4CuT ) FIELD PIPING...
  • Page 478 Piping Diagrams SiBE121021_C 1.1.3 Floor / Ceiling Suspended Dual Type FLKS25/35BAVMB FLKS50/60BAVMB INDOOR UNIT INDOOR UNIT ( 9.5CuT ) ( 6.4CuT ) HEAT EXCHANGER HEAT EXCHANGER THERMISTOR FIELD PIPING ON HEAT THERMISTOR ( 6.4CuT ) SIROCCO FAN EXCH. FIELD PIPING ON HEAT ( 6.4CuT ) EXCH.
  • Page 479 SiBE121021_C Piping Diagrams 1.1.4 Duct Connected Type FDK(X)S25/35EAVMB, FDK(X)S50/60CVMB INDOOR UNIT ( 6.4CuT ) HEAT EXCHANGER THERMISTOR ON HEAT FIELD PIPING ( 6.4CuT ) EXCH. SIROCCO FAN FAN MOTOR FIELD PIPING (A CuT ) (A CuT ) REFRIGERANT FLOW COOLING HEATING FDKS25EAVMB FDKS50CVMB...
  • Page 480 Piping Diagrams SiBE121021_C FCQ35/50/60C7VEB, FCQ35/50/60C8VEB Model Liquid φ6.35 φ9.52 Heat exchanger FCQ35C FCQ50C φ12.70 φ6.35 FCQ60C Liquid pipe connection port Gas pipe connection port Cooling Heating C: 3TW28925-1A 1.1.6 Ceiling Mounted Built-in Type FDBQ25B8V1 Heat exchanger Refrigerant flow Cooling Heating Refrigerant pipe connection port diameters Model Liquid...
  • Page 481 SiBE121021_C Piping Diagrams 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 1.1.7 Ceiling Suspended Type FHQ35/50/60BVV1B Indoor heat exchanger Field piping φ...

  • Page 482: Outdoor Unit

    Piping Diagrams SiBE121021_C Outdoor Unit 1.2.1 Cooling Only 3MKS50E3V1B OUTDOOR UNIT HEAT EXCHANGER OUTDOOR TEMPERATURE ELECTRONIC THERMISTOR ( DOA ) HEADER EXPANSION VALVE LIQUID PIPE THERMISTOR ( DLA ) 6.4CuT HEADER 9.5CuT ROOM A ( 6.4 CuT ) FILTER ELECTRONIC EXPANSION VALVE LIQUID PIPE THERMISTOR ( DLB )
  • Page 483 SiBE121021_C Piping Diagrams 4MKS75F2V1B OUTDOOR UNIT HEAT EXCHANGER OUTDOOR TEMPERATURE THERMISTOR ( DOA ) MOTOR OPERATED VALVE LIQUID PIPE THERMISTOR ( DLA ) HEADER 6.4CuT 9.5CuT ROOM A ( 6.4 CuT ) FILTER MOTOR OPERATED VALVE LIQUID PIPE THERMISTOR ( DLB ) 6.4CuT ROOM B ( 6.4 CuT )
  • Page 484 Piping Diagrams SiBE121021_C 1.2.2 Heat Pump 3MXS52E3V1B, 3AMX52E3V1B OUTDOOR UNIT HEAT EXCHANGER OUTDOOR TEMPERATURE THERMISTOR ( DOA ) ELECTRONIC HEADER EXPANSION VALVE LIQUID PIPE HEADER THERMISTOR ( DLA ) 9.5CuT 6.4CuT ROOM A ( 6.4 CuT ) FILTER ELECTRONIC EXPANSION VALVE LIQUID PIPE THERMISTOR ( DLA ) FIELD...
  • Page 485 SiBE121021_C Piping Diagrams 4MXS68F2V1B OUTDOOR UNIT HEAT EXCHANGER OUTDOOR TEMPERATURE THERMISTOR(DOA) MOTOR OPERATED VALVE HEADER LIQUID PIPE THERMISTOR(DLA) 6.4CuT HEADER 9.5CuT ROOM A FILTER (6.4 CuT) MOTOR OPERATED VALVE LIQUID PIPE THERMISTOR(DLB) 6.4CuT ROOM B FILTER (6.4 CuT) MOTOR OPERATED VALVE FIELD LIQUID PIPE THERMISTOR(DLC)
  • Page 486 Piping Diagrams SiBE121021_C 5MXS90E2V3B OUTDOOR UNIT MOTOR OPERATED LIQUID PIPE HEAT EXCHANGER VALVE (A) THERMISTOR OUTDOOR TEMPERATURE (ROOM-A) 7.9CuT THERMISTOR RECEIVER HEADER 7.9CuT ROOM A 7.9CuT HEADER LIQUID PIPE MOTOR OPERATED FILTER (6.4 CuT) 7.9CuT VALVE (B) THERMISTOR 7.9CuT 9.5CuT (ROOM-B) 7.9CuT 7.9CuT...

  • Page 487: Wiring Diagrams

    SiBE121021_C Wiring Diagrams 2. Wiring Diagrams Indoor Unit 2.1.1 Wall Mounted Type FTXG25/35JV1BW(S), CTXG50JV1BW(S) : FRAME GROUND : FUSE H1P, H2P : PILOT LAMP 3.15A C102 : FAN MOTOR OUTDOOR MR10 M1S, M2S : SWING MOTOR : STEPPING MOTOR C101 INTELLIGENT EYE TRANSMISSION A1P~A3P...
  • Page 488 Wiring Diagrams SiBE121021_C 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...
  • Page 489 SiBE121021_C Wiring Diagrams 2.1.3 Floor / Ceiling Suspended Dual Type FLK(X)S25/35/50/60BAVMB 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 490 Wiring Diagrams SiBE121021_C 2.1.5 Ceiling Mounted Cassette Type FFQ25/35/50/60B8V1B : CONNECTER DISCRIMINATION COLOUR FOR COMPONENTS. : CONNECTER COLOUR FOR COMPONENTS. : CONNECTER COLOUR FOR PRINTED CIRCUIT BOARD. t˚ IN CASE OF SIMULTANEOUS t˚ t˚ OPERATION SYSTEM INDOOR UNIT INDOOR UNIT ( MASTER ) ( SLAVE ) NOTE ) 5...
  • Page 491 SiBE121021_C Wiring Diagrams FCQ35/50/60C7VEB In case of simultaneous 35-140 - Class 35~60 - CLASS operation system 35~60 - CLASS 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...
  • Page 492 Wiring Diagrams SiBE121021_C FCQ35/50/60C8VEB In case of simultaneous 35~140 - Class 35~60 - CLASS operation system 35~60 - CLASS Indoor unit Indoor unit Indoor unit (master) (slave) (slave) To outdoor unit Norm. emg. Receiver display unit Central remote control (note1) Control box Remote control Wired remote...
  • Page 493 SiBE121021_C Wiring Diagrams 2.1.6 Ceiling Mounted Built-in Type FDBQ25B8V1 Indoor Outdoor Notes 1. When using the central remote control, see manual for connection Wired remote control to the unit. (optional) 2. The remote control model varies according to the combination system.
  • Page 494 Wiring Diagrams SiBE121021_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 : Blue : Brown...

  • Page 495: Outdoor Unit

    SiBE121021_C Wiring Diagrams Outdoor Unit 2.2.1 Cooling Only 3MKS50E3V1B MRM20 POWER SUPPLY 3.15A MRM10 6(P) + + + 7(N) TO INDOOR UNIT X11A ROOM B 3.15A ROOM A PCB1 ROOM C S101 SHEET METAL t˚ t˚ t˚ t˚ t˚ t˚ t˚...
  • Page 496 Wiring Diagrams SiBE121021_C 4MKS75F2V1B MRM20 3.15A POWER SUPPLY V100 MRM10 6(P) 7(N) TO INDOOR UNIT X11A ROOM B 3.15A ROOM A MRC/W PCB1 ROOM C S101 t° t° t° t° t° t° t° t° t° t° t° ROOM D S102 R10T R11T PCB2...
  • Page 497 SiBE121021_C Wiring Diagrams 2.2.2 Heat Pump 3MXS52E3V1B, 3AMX52E3V1B MRM20 3.15A POWER SUPPLY MRM10 6(P) + + + 7(N) TO INDOOR UNIT X11A ROOM B 3.15A ROOM A PCB1 ROOM C S101 SHEET METAL t˚ t˚ t˚ t˚ t˚ t˚ t˚ t˚...
  • Page 498 Wiring Diagrams SiBE121021_C 4MXS68F2V1B MRM20 3.15A POWER SUPPLY V100 MRM10 6(P) 7(N) TO INDOOR UNIT X11A ROOM B 3.15A ROOM A MRC/W PCB1 ROOM C S101 t° t° t° t° t° t° t° t° t° t° t° ROOM D S102 PCB2 R10T R11T...
  • Page 499 SiBE121021_C Wiring Diagrams 5MXS90E2V3B BLK: Black BRN: brown WHT: White RED: Red BLU: Blue GRY: Grey ORG: Orange YLW: Yellow GRN: Green To indoor unit Room A Room B Room C Room D Room E Sheet metal Z1C~Z6C : Ferrite core R1T~R3T : Overload protector X1M~X6M...
  • Page 500 Revision History Month / Year Version Revised contents 07/2010 SiBE121021 – M-10013: Correction of troubleshooting flowchart AF for SkyAir models 11/2010 SiBE121021_A 12/2010 SiBE121021_B Correction of data 03/2011 SiBE121021_C Model addition: FTXS-J2 series, FCQ-C8 series, mass-sales route models...
  • Page 501 Improper installation can result in water or refrigerant leakage, electrical shock, fire or explosion. Use only those parts and accessories supplied or specified by Daikin. Ask a qualified installer or contractor to install those parts and accessories. Use of unauthorised parts and accessories or improper installation of parts and accessories can result in water or refrigerant leakage, electrical shock, fire or explosion.

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