Daikin Super multi NX E Series Service Manual
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Daikin Super multi NX E Series Service Manual

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Service
Manual
E / F / G / K-Series
SiBE121135_A
[Applied Models]
Inverter Multi : Cooling Only
Inverter Multi : Heat Pump

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Summary of Contents for Daikin Super multi NX E Series

  • Page 1 SiBE121135_A Service Manual E / F / G / K-Series [Applied Models] Inverter Multi : Cooling Only Inverter Multi : Heat Pump...
  • Page 2 SiBE121135_A SUPER MULTI NX E / F / G / K-Series Cooling Only Outdoor Unit 3MKS50E3V1B 4MKS58E3V1B 4MKS75F2V1B 5MKS90E2V3B Indoor Unit FTXS25J2V1B FFQ25B9V1B FHQ35BWV1B FDBQ25B8V1 FTXS35J2V1B FFQ35B9V1B FHQ50BWV1B FBQ35C8VEB FTXS42J2V1B FFQ50B9V1B FHQ60BWV1B FBQ50C8VEB FTXS50J2V1B FFQ60B9V1B FBQ60C8VEB FTXS60GV1B FTXS71GV1B Heat Pump Outdoor Unit 3MXS40K2V1B 3MXS68G2V1B...

  • Page 3: Table Of Contents

    SiBE121135_A 1. Introduction .................... vi 1.1 Safety Cautions ..................vi 1.2 Used Icons ....................x Part 1 List of Functions ..............1 1. Cooling Only....................2 1.1 Outdoor Unit .....................2 1.2 Indoor Unit....................3 2. Heat Pump ....................6 2.1 Outdoor Unit .....................6 2.2 Indoor Unit....................8 Part 2 Specifications ..............
  • Page 4 SiBE121135_A 1.7 Program Dry Operation ................83 1.8 Automatic Operation................84 1.9 Thermostat Control.................85 1.10 NIGHT SET Mode ..................86 1.11 ECONO Operation .................87 1.12 HOME LEAVE Operation ...............88 1.13 INTELLIGENT EYE Operation ...............90 1.14 2-Area INTELLIGENT EYE Operation ...........91 1.15 Inverter POWERFUL Operation .............93 1.16 Multi-Colored Indicator Lamp / TIMER Lamp .........94 1.17 Brightness Setting of the Indoor Unit Display.........95 1.18 Clock Setting ..................96...
  • Page 5 SiBE121135_A Part 6 Service Diagnosis............148 1. Troubleshooting with LED ..............150 1.1 Indoor Unit....................150 1.2 Outdoor Unit ..................152 2. Problem Symptoms and Measures .............153 3. Service Check Function ..............154 3.1 RA Indoor Unit..................154 3.2 SA Indoor Unit ..................163 4. Code Indication on Remote Controller ..........167 4.1 RA Indoor Unit..................167 4.2 SA Indoor Unit ..................167 4.3 Sub Codes for SA Indoor Unit ..............168...
  • Page 6 SiBE121135_A 7.13 Compressor Sensor System Abnormality ..........216 7.14 Position Sensor Abnormality ..............218 7.15 CT or Related Abnormality ..............220 7.16 Thermistor or Related Abnormality (Outdoor Unit).......222 7.17 Electrical Box Temperature Rise............224 7.18 Radiation Fin Temperature Rise ............226 7.19 Output Overcurrent Detection ..............228 8.

  • Page 7: Introduction

    SiBE121135_A Introduction 1. Introduction Safety Cautions Cautions and Be sure to read the following safety cautions before conducting repair work. Warnings The caution items are classified into “ Warning” and “ Caution”. The “ Warning” items are especially important since they can lead to death or serious injury if they are not followed closely.
  • Page 8 Introduction SiBE121135_A 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 9 SiBE121135_A Introduction 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 10 Introduction SiBE121135_A 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 11: Used Icons

    SiBE121135_A Introduction 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 12: Part 1 List Of Functions

    SiBE121135_A Part 1 List of Functions 1. Cooling Only....................2 1.1 Outdoor Unit .....................2 1.2 Indoor Unit....................3 2. Heat Pump ....................6 2.1 Outdoor Unit .....................6 2.2 Indoor Unit....................8 List of Functions...

  • Page 13: Cooling Only

    SiBE121135_A Cooling Only 1. 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 14: Indoor Unit

    Cooling Only SiBE121135_A 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: Function And Control Part

    SiBE121135_A Cooling Only 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 16 Cooling Only SiBE121135_A 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: Heat Pump

    SiBE121135_A Heat Pump 2. 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 18 Heat Pump SiBE121135_A Category Functions Category Functions Basic Inverter (with inverter power control) Health & Air-purifying filter — — Function Clean – – Operation limit for cooling (°CDB) Photocatalytic deodorizing filter — — Air-purifying filter with photocatalytic – – Operation limit for heating (°CWB) —...

  • Page 19: Indoor Unit

    SiBE121135_A 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 20 Heat Pump SiBE121135_A Category Functions Category Functions Basic Inverter (with inverter power Health & Air-purifying filter — — — Function control) Clean Operation limit for cooling (°CDB) — — — Photocatalytic deodorizing filter — — — Air-purifying filter with Operation limit for heating (°CWB) —...
  • Page 21 SiBE121135_A Heat Pump 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 Heat Pump SiBE121135_A 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 SiBE121135_A Heat Pump 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 Heat Pump SiBE121135_A 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 SiBE121135_A Heat Pump 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 26 Heat Pump SiBE121135_A 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: Part 2 Specifications

    SiBE121135_A Part 2 Specifications 1. Cooling Only..................17 1.1 Outdoor Unit ...................17 1.2 Indoor Unit....................19 2. Heat Pump ....................24 2.1 Outdoor Unit ...................24 2.2 Indoor Unit....................28 Specifications...

  • Page 28: Cooling Only

    Cooling Only SiBE121135_A 1. 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...

  • Page 29: Specifications

    SiBE121135_A Cooling Only 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...

  • Page 30: Indoor Unit

    Cooling Only SiBE121135_A Indoor Unit Wall Mounted Type 50 Hz, 220 - 230 - 240 V Model FTXS25J2V1B FTXS35J2V1B Rated Capacity 2.5 kW Class 3.5 kW Class Front Panel Color White White 10.8 (381) 11.4 (403) 7.9 (279) 8.7 (307) m³/min Airflow Rate (cfm)
  • Page 31 SiBE121135_A Cooling Only 50 Hz, 220 - 230 - 240 V Model FTXS60GV1B FTXS71GV1B Rated Capacity 6.0 kW Class 7.1 kW Class Front Panel Color White White 16.0 (565) 17.2 (607) 13.5 (477) 14.5 (512) m³/min Airflow Rate (cfm) 11.3 (399) 11.5 (406) 10.1 (357) 10.5 (371)

  • Page 32: Ceiling Mounted Cassette Type

    Cooling Only SiBE121135_A Ceiling Mounted Cassette Type 50 Hz, 230 V Model FFQ25B9V1B FFQ35B9V1B Rated Capacity 2.5 kW Class 3.5 kW Class Model BYFQ60B8W1 BYFQ60B8W1 Color White White Decoration Panel Dimensions (H × W × D) 55 × 700 × 700 55 ×...

  • Page 33: Ceiling Suspended Type

    SiBE121135_A Cooling Only Ceiling Suspended Type 50 Hz, 220 - 230 - 240 V Model FHQ35BWV1B FHQ50BWV1B Rated Capacity 3.5 kW Class 5.0 kW Class Panel Color White White 13.0 (459) 13.0 (459) Airflow Rate m³/min 10.0 (353) 10.0 (353) Type Sirocco Fan Sirocco Fan...
  • Page 34 Cooling Only SiBE121135_A Ceiling Mounted Built-in Type 50 Hz, 220 - 230 - 240 V / 50 Hz, 230 V 60 Hz, 220 V Model FDBQ25B8V1 FBQ35C8VEB Rated Capacity 2.5 kW Class 3.5 kW Class Model — BYBS45DJW1 Color — White Decoration Panel...

  • Page 35: Heat Pump

    SiBE121135_A Heat Pump 2. Heat Pump Outdoor Unit 50 Hz, 230 V 3MXS40K2V1B, 3MXS40K3V1B 3MXS52E3V1B, 3MXS52E4V1B Model Cooling Heating Cooling Heating 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...
  • Page 36 Heat Pump SiBE121135_A 50 Hz, 230 V 3MXS68G2V1B, 3MXS68G3V1B 4MXS68F2V1B, 4MXS68F3V1B 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...
  • Page 37 SiBE121135_A Heat Pump 50 Hz, 230 V 4MXS80E2V3B, 4MXS80E3V3B 5MXS90E2V3B, 5MXS90E3V3B 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...
  • Page 38 Heat Pump SiBE121135_A 50 Hz, 230 V 3AMX52E3V1B, 3AMX52E4V1B 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 45.0 45.0 m³/min —...

  • Page 39: Indoor Unit

    SiBE121135_A Heat Pump Indoor Unit Wall Mounted Type 50 Hz, 220 - 230 - 240 V FTXG25JV1BW FTXG25JV1BA Model Cooling Heating Cooling Heating Rated Capacity 2.5 kW Class 2.5 kW Class Front Panel Color White Brushed Aluminium Panel 8.8 (311) 9.6 (339) 8.8 (311) 9.6 (339)
  • Page 40 Heat Pump SiBE121135_A 50 Hz, 220 - 230 - 240 V FTXG50JV1BW FTXG50JV1BA Model Cooling Heating Cooling Heating Rated Capacity 5.0 kW Class 5.0 kW Class Front Panel Color White Brushed Aluminium Panel 10.3 (364) 11.4 (402) 10.3 (364) 11.4 (402) 8.5 (300) 9.8 (346) 8.5 (300)
  • Page 41 SiBE121135_A Heat Pump 50 Hz, 220 - 230 - 240 V FTXS25K2V1B CTXS35K2V1B Model Cooling Heating Cooling Heating Rated Capacity 2.5 kW Class 3.5 kW Class Front Panel Color White White 9.1 (321) 10.0 (353) 9.2 (325) 10.1 (357) 7.0 (247) 8.0 (282) 7.2 (254) 8.1 (286)
  • Page 42 Heat Pump SiBE121135_A 50 Hz, 220 - 230 - 240 V FTXS50K2V1B Model Cooling Heating Rated Capacity 5.0 kW Class Front Panel Color White 11.9 (420) 13.3 (470) 9.6 (339) 10.8 (381) m³/min Airflow Rates (cfm) 7.4 (261) 8.4 (297) 4.5 (159) 5.5 (194) Type...
  • Page 43 SiBE121135_A Heat Pump 50 Hz, 220 - 230 - 240 V FTXS42J2V1B FTXS50J2V1B Model Cooling Heating Cooling Heating Rated Capacity 4.2 kW Class 5.0 kW Class Front Panel Color White White 11.3 (399) 12.2 (431) 11.6 (410) 12.1 (427) 9.0 (318) 9.7 (343) 9.2 (325) 9.8 (346)
  • Page 44 Heat Pump SiBE121135_A 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 (261) 8.2 (290) 7.1 (252) 7.9 (280)
  • Page 45 SiBE121135_A Heat Pump 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 Rate (cfm) 7.0 (246) 7.6 (267) 6.0 (212) 6.7 (236) Type...

  • Page 46: Floor Standing Type

    Heat Pump SiBE121135_A Floor Standing Type 50 Hz, 220 - 230 - 240 V FVXG25K2V1B FVXG35K2V1B Model Cooling Heating Cooling Heating Rated Capacity 2.5 kW Class 3.5 kW Class Front Panel Color White White 8.9 (314) 9.9 (350) 9.1 (321) 10.2 (360) 7.0 (247) 7.8 (275)
  • Page 47 SiBE121135_A Heat Pump 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) 7.3 (258)
  • Page 48 Heat Pump SiBE121135_A 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 49: Duct Connected Type

    SiBE121135_A Heat Pump Duct Connected Type 50 Hz, 230 V FDXS25E7VMB FDXS35E7VMB Model Cooling Heating Cooling Heating Rated Capacity 2.5 kW Class 3.5 kW Class 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 Airflow Rate (cfm)
  • Page 50 Heat Pump SiBE121135_A Ceiling Mounted Cassette Type 50 Hz, 220 - 230 - 240 V FCQG35FVEB FCQG50FVEB Model Cooling Heating Cooling Heating Rated Capacity 3.5 kW Class 5.0 kW Class Model BYCQ140D7W1 / BYCQ140D7W1W / BYCQ140D7GW1 BYCQ140D7W1 / BYCQ140D7W1W / BYCQ140D7GW1 Color Fresh White Fresh White...
  • Page 51 SiBE121135_A Heat Pump 50 Hz, 230 V FFQ25B9V1B FFQ35B9V1B Model Cooling Heating Cooling Heating Rated Capacity 2.5 kW Class 3.5 kW Class Model BYFQ60B8W1 BYFQ60B8W1 Color White White Decoration Panel Dimensions (H × W × D) 55 × 700 × 700 55 ×...
  • Page 52 Heat Pump SiBE121135_A Ceiling Suspended Type 50 Hz, 220 - 230 - 240 V FHQ35BWV1B FHQ50BWV1B 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 Rate m³/min 10.0 (353)
  • Page 53 SiBE121135_A Heat Pump Ceiling Mounted Built-in Type 50 Hz, 220 - 230 - 240 V / 50 Hz, 230 V 60 Hz, 220 V FDBQ25B8V1 FBQ35C8VEB Model Cooling Heating Cooling Heating Rated Capacity 2.5 kW Class 3.5 kW Class Model —...

  • Page 54: Part 3 Printed Circuit Board Connector Wiring Diagram

    SiBE121135_A Part 3 Printed Circuit Board Connector Wiring Diagram 1. Outdoor Unit..................44 2. Indoor Unit.....................47 2.1 FTXG25/35/50JV1BW(A) ...............47 2.2 CTXS15/35K2V1B, FTXS20/25K2V1B ..........49 2.3 FTXS35/42/50K2V1B, FTXS25/35/42/50J2V1B, ATXS20/25/35/42/50G2V1B ..............51 2.4 FTXS60/71GV1B..................53 2.5 FVXG25/35/50K2V1B ................55 2.6 FVXS25/35/50FV1B ................57 2.7 FLXS25/35/50/60BAVMB...............59 2.8 FDXS25/35E7VMB, FDXS50/60C7VMB..........61 2.9 FCQG35/50/60FVEB................63 2.10 FFQ25/35/50/60B9V1B ................65 2.11 FHQ35/50/60BWV1B ................66...

  • Page 55: Outdoor Unit

    SiBE121135_A Outdoor Unit 1. Outdoor Unit Main PCB 1) S10 Connector for terminal board (indoor - outdoor transmission) 2) S15 Connector for COOL / HEAT mode lock ∗ Refer to page 251 for detail. 3) S20 (white) Connector for electronic expansion valve coil A port 4) S21 (red) Connector for electronic expansion valve coil B port 5) S22 (blue)
  • Page 56 Outdoor Unit SiBE121135_A 68/75 class V100 S101 W V U 3P194316-1 3P194316-2 3P194316-4 3P194316-5 80/90 class E1 E2 V100 (white) (blue) S101 W V U 2P171491-1 2P171491-2 2P171491-8 2P171491-9 Printed Circuit Board Connector Wiring Diagram...
  • Page 57 SiBE121135_A Outdoor Unit Service Monitor 1) S52, S102 Connector for main PCB 2) LED A LED for service monitor (green) 3) LED1 - LED4 LED for service monitor (red) 4) LED 5 LED for service monitor (red) (for 5-room model only) 5) SW1 Forced operation [ON/OFF] switch ∗...

  • Page 58: Indoor Unit

    Indoor Unit SiBE121135_A 2. Indoor Unit FTXG25/35/50JV1BW(A) Control PCB 1) S21 Connector for centralized control (HA) 2) S25 Connector for INTELLIGENT EYE sensor PCB 3) S32 Indoor heat exchanger thermistor 4) S41 Connector for swing motors 5) S42 Connector for reduction motor (front panel mechanism) and limit switch 6) S46 Connector for signal receiver / display PCB 7) S200...
  • Page 59 SiBE121135_A Indoor Unit Signal Receiver / Display PCB 1) S51 Connector for control PCB 2) S52 Connector for room temperature thermistor 3) S1W Forced cooling operation [ON/OFF] button 4) H1P LED for operation (multi-color) 5) H2P LED for INTELLIGENT EYE (green) 6) JA Address setting jumper ∗...

  • Page 60: Ctxs15/35K2V1B, Ftxs20/25K2V1B

    Indoor Unit SiBE121135_A CTXS15/35K2V1B, FTXS20/25K2V1B Control PCB 1) S6 Connector for swing motor (horizontal blade) 2) S25 Connector for INTELLIGENT EYE sensor PCB 3) S26 Connector for display PCB 4) S32 Connector for indoor heat exchanger thermistor 5) S200 Connector for fan motor 6) S403 Connector for adaptor PCB (option) 7) FG1, FG2...
  • Page 61 SiBE121135_A Indoor Unit Display PCB 1) S27 Connector for control PCB 2) SW1 (S1W) Forced cooling operation [ON/OFF] button 3) LED1 (H1P) LED for operation (green) 4) LED2 (H2P) LED for timer (yellow) 5) LED3 (H3P) LED for INTELLIGENT EYE (green) 6) RTH1 (R1T) Room temperature thermistor LED3...

  • Page 62: Ftxs35/42/50K2V1B, Ftxs25/35/42/50J2V1B, Atxs20/25/35/42/50G2V1B

    Indoor Unit SiBE121135_A FTXS35/42/50K2V1B, FTXS25/35/42/50J2V1B, ATXS20/25/35/42/50G2V1B Control PCB 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 Connector for display PCB 7) S47...
  • Page 63 SiBE121135_A Indoor Unit Signal Receiver 1) S48 Connector for control PCB 3P210728-1 Display PCB 1) S49 Connector for control PCB 2) SW1 Forced cooling operation [ON/OFF] button 3) LED1 (H1P) LED for operation (green) 4) LED2 (H2P) LED for timer (yellow) 5) LED3 (H3P) LED for INTELLIGENT EYE (green) 6) RTH1 (R1T)

  • Page 64: Ftxs60/71Gv1B

    Indoor Unit SiBE121135_A FTXS60/71GV1B Control PCB 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 Connector for display PCB 7) S47...
  • Page 65 SiBE121135_A Indoor Unit Signal Receiver 1) S48 Connector for control PCB 3P247309-1 Display PCB 1) S49 Connector for control PCB 2) SW1 Forced cooling operation [ON/OFF] button 3) LED1 (H1P) LED for operation (green) 4) LED2 (H2P) LED for timer (yellow) 5) LED3 (H3P) LED for INTELLIGENT EYE (green) 6) RTH1 (R1T)

  • Page 66: Fvxg25/35/50K2V1B

    Indoor Unit SiBE121135_A FVXG25/35/50K2V1B Main PCB 1) S1 Connector for fan motor 2) S2 Connector for terminal board 3) S6 Connector for swing motor 4) S21 Connector for centralized control (HA) 5) S26 Connector for service PCB 6) S30 Connector for indoor electronic expansion valve coil (motor operated valve coil) 7) S32 Connector for indoor heat exchanger thermistor...
  • Page 67 SiBE121135_A Indoor Unit Display PCB 1) S56 Connector for main PCB 2) S1W Forced cooling operation [ON/OFF] button 3) H1P LED for operation (green) 4) H2P LED for timer (yellow) 5) H3P LED for RADIANT operation (red) 3P273252-1 Service PCB 1) S27 Connector for main PCB 2) S2W-1...

  • Page 68: Fvxs25/35/50Fv1B

    Indoor Unit SiBE121135_A FVXS25/35/50FV1B Control PCB 1) S1 Connector for fan motor 2) S21 Connector for centralized control (HA) 3) S26 Connector for service PCB 4) S32 Indoor heat exchanger thermistor 5) S41 Connector for lower air outlet motor 6) S42 Connector for swing motor 7) S46 Connector for display PCB...
  • Page 69 SiBE121135_A Indoor Unit Sensor PCB 1) S49 Connector for control PCB 2) RTH2 (R1T) Room temperature thermistor RTH2 3P191450-1 Service PCB 1) S27 Connector for control PCB 2) SW2-4 Switch for upward airflow limit setting ∗ Refer to page 257 for detail. ∗...

  • Page 70: Flxs25/35/50/60Bavmb

    Indoor Unit SiBE121135_A FLXS25/35/50/60BAVMB Control PCB 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 Connector for signal receiver PCB 6) S32 Connector for indoor heat exchanger thermistor 7) S37...
  • Page 71 SiBE121135_A Indoor Unit Power Supply 1) S36 Connector for control PCB 2) H1, H2, H3 Connector for terminal board 3) H4, H5, H6 Connector for AC fan motor 4) V1 Varistor 5) FU1 Fuse (3.15A, 250V) 2P084361-1 Display PCB 1) S25 Connector for control PCB 2) LED1 (H1P) LED for operation (green)

  • Page 72: Fdxs25/35E7Vmb, Fdxs50/60C7Vmb

    Indoor Unit SiBE121135_A FDXS25/35E7VMB, FDXS50/60C7VMB Control PCB 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 Connector for indoor heat exchanger thermistor 6) H1, H2, H3 Connector for terminal board 7) GND...
  • Page 73 SiBE121135_A Indoor Unit Display PCB 1) S1 Connector for control PCB 2) SW1 (S1W) Forced cooling operation [ON/OFF] button 3) LED1 (H1P) LED for HOME LEAVE operation (red) 4) LED2 (H2P) LED for timer (yellow) 5) LED3 (H3P) LED for operation (green) 6) RTH1 (R1T) Room temperature thermistor LED3...

  • Page 74: Fcqg35/50/60Fveb

    Indoor Unit SiBE121135_A FCQG35/50/60FVEB [A1P] 1) X15A Connector for float switch 2) X16A Connector for room temperature thermistor 3) X17A, X18A Connector for indoor heat exchanger thermistor 4) X20A Connector for fan motor 5) X24A Connector for signal receiver PCB (when the wireless remote controller is used) 6) X27A Connector for terminal board (for inter-unit wiring)
  • Page 75 SiBE121135_A Indoor Unit [A2P] 1) X1A, X7A Connector for [A1P] 2) X2A Connector for sensor kit (option) 3) X4A Connector for humidity sensor PCB [A3P] 4) X8A Connector for self-cleaning decoration panel (option) 5) X9A Connector for swing motors 6) X10A Connector for drain pump motor 7) HAP LED for service monitor (green)

  • Page 76: Ffq25/35/50/60B9V1B

    Indoor Unit SiBE121135_A 2.10 FFQ25/35/50/60B9V1B Control PCB 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 6) X20A Connector for fan motor...

  • Page 77: Fhq35/50/60Bwv1B

    SiBE121135_A Indoor Unit 2.11 FHQ35/50/60BWV1B Control PCB 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 Connector for indoor heat exchanger thermistor 6) X19A Connector for room temperature thermistor...

  • Page 78: Fdbq25B8V1

    Indoor Unit SiBE121135_A 2.12 FDBQ25B8V1 Control PCB 1) X5A Connector for terminal board (for wired remote controller) 2) X10A, X11A Connector for transformer 3) X17A Connector for indoor heat exchanger thermistor 4) X18A Connector for liquid pipe thermistor 5) X19A Connector for room temperature thermistor 6) X21A Connector for fan motor...

  • Page 79: Fbq35/50/60C8Veb

    SiBE121135_A Indoor Unit 2.13 FBQ35/50/60C8VEB Control PCB 1) X15A Connector for float switch 2) X16A Connector for room temperature thermistor 3) X17A Connector for indoor heat exchanger 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) 7) X28A...
  • Page 80 Indoor Unit SiBE121135_A Fan PCB (for FBQ60C8VEB) 1) X1A, X2A Connector for fan motor 2) X3A Connector for control PCB 3) X6A Connector for reactor 4) X9A Connector for capacitor PCB 5) X10A Connector for terminal board (power supply) 6) F3U Fuse (6.3 A, 250 V) 7) HAP LED for service monitor (green)

  • Page 81: Wired Remote Controller

    SiBE121135_A Wired Remote Controller 3. Wired Remote Controller 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 261 for detail. PCB Detail 2P113638-2 Printed Circuit Board Connector Wiring Diagram...

  • Page 82: Brc1E52A7, Brc1E52B7

    Wired Remote Controller SiBE121135_A BRC1E52A7, BRC1E52B7 Connectors and 1) P1, P2 Terminal for indoor unit Other Parts 2) R1T Room temperature thermistor PCB Detail 2P298037-1 2P298037-2 Printed Circuit Board Connector Wiring Diagram...

  • Page 83: Part 4 Function And Control

    SiBE121135_A Part 4 Function and Control 1. Function of RA Indoor Unit..............73 1.1 Temperature Control ................73 1.2 Frequency Principle................73 1.3 Operation Starting Control..............75 1.4 Airflow Direction Control.................76 1.5 Fan Speed Control for Indoor Unit ............80 1.6 RADIANT Operation................81 1.7 Program Dry Operation ................83 1.8 Automatic Operation................84 1.9 Thermostat Control.................85 1.10 NIGHT SET Mode ..................86...

  • Page 84: Function Of Ra Indoor Unit

    Function of RA Indoor Unit SiBE121135_A 1. Function of RA Indoor Unit 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 85 SiBE121135_A Function of RA Indoor Unit 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 86: Operation Starting Control

    Function of RA Indoor Unit SiBE121135_A Operation Starting Control Outline Wall Mounted Type: FTXG 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 87: Airflow Direction Control

    SiBE121135_A Function of RA Indoor Unit Airflow Direction Control Power-Airflow The large flap sends a large volume of air downward to the floor. The flap provides an optimum Dual Flaps control in cooling, dry, and heating operation. <Cooling / Dry> During cooling or dry operation, the flap retracts into the indoor unit.
  • Page 88 Function of RA Indoor Unit SiBE121135_A Floor Standing Type: FVXG Series The swinging range of the flap is the same in any operation mode. (R14634) Floor Standing Type: FVXS Series Vertical Swing (up and down) Cooling / Dry Heating Upward airflow limit (R6831) (R6829)
  • Page 89 SiBE121135_A Function of RA Indoor Unit 3-D Airflow Wall Mounted Type: FTXS-J/G, ATXS Series Alternative repetition of vertical and horizontal swing motions enables uniform air-conditioning of the entire room. This function is effective for starting the air conditioner. When the horizontal swing and vertical swing are both set to automatic operation, the airflow becomes 3-D airflow.
  • Page 90 Function of RA Indoor Unit SiBE121135_A Airflow Selection Floor Standing Type: FVXS Series Setting Airflow direction can be set with the airflow selection switch. Open the front panel. Air is blown from the upper outlet only. The blow pattern is automatically decided depending on mode and conditions.

  • Page 91: Fan Speed Control For Indoor Unit

    SiBE121135_A Function of RA Indoor Unit Fan Speed Control for Indoor Unit 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 92: Radiant Operation

    Function of RA Indoor Unit SiBE121135_A RADIANT Operation Outline Floor Standing Type: FVXG Series The RADIANT operation has 2 operation modes. RADIANT 1: RADIANT operation with heating RADIANT 2: RADIANT operation only 1.6.1 Indoor Electronic Expansion Valve (Motor Operated Valve) Control Initializing with The indoor electronic expansion valve is initialized when turning on the power.

  • Page 93: Indoor Unit Fan Control

    SiBE121135_A Function of RA Indoor Unit 1.6.2 Indoor Unit Fan Control The movement of the indoor unit fan is different whether in RADIANT 1 or RADIANT 2. RADIANT 1 starts. Room temperature Set temperature Note: The only difference between RADIANT 1 and RADIANT 2 is the Room temperature movement of the indoor unit fan.

  • Page 94: Program Dry Operation

    Function of RA Indoor Unit SiBE121135_A Program Dry Operation Outline Program dry operation removes humidity while preventing the room temperature from lowering. Since the microcomputer controls both the temperature and airflow rate, the temperature adjustment and [FAN] setting buttons are inoperable. Detail The microcomputer automatically sets the temperature and airflow rate.

  • Page 95: Automatic Operation

    SiBE121135_A Function of RA Indoor Unit Automatic Operation Outline Automatic Cooling / Heating Function When the automatic operation 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. The unit automatically switches the operation mode to maintain the room temperature at the set temperature.

  • Page 96: Thermostat Control

    Function of RA Indoor Unit SiBE121135_A Thermostat Control Outline Thermostat control is based on the difference between the room thermistor temperature and the target temperature. Detail 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.

  • Page 97: Night Set Mode

    SiBE121135_A Function of RA Indoor Unit 1.10 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 98: Econo Operation

    Function of RA Indoor Unit SiBE121135_A 1.11 ECONO Operation Outline Wall Mounted Type, Floor Standing Type The "ECONO operation" reduces the maximum operating current and the power consumption. 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 99: Home Leave Operation

    SiBE121135_A Function of RA Indoor Unit 1.12 HOME LEAVE Operation Outline Floor / Ceiling Suspended Dual Type, Duct Connected Type 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 100 Function of RA Indoor Unit SiBE121135_A How to Set the Temperature and Airflow Rate When using HOME LEAVE operation for the first time, set the temperature and airflow rate for HOME LEAVE operation. Record your preferred temperature and airflow rate. Initial setting Selectable range Temperature...

  • Page 101: Intelligent Eye Operation

    SiBE121135_A Function of RA Indoor Unit 1.13 INTELLIGENT EYE Operation Outline Wall Mounted Type: FTXG, CTXS, FTXS20/25K, FTXS-G, ATXS Series This function detects the existence of humans in the room with a human motion sensor (INTELLIGENT EYE) and reduces the capacity when there is nobody in the room in order to save electricity.

  • Page 102: 2-Area Intelligent Eye Operation

    Function of RA Indoor Unit SiBE121135_A 1.14 2-Area INTELLIGENT EYE Operation Outline Wall Mounted Type: FTXS35/42/50K, FTXS-J Series 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 103 SiBE121135_A Function of RA Indoor Unit 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 ( ) (R15308)

  • Page 104: Inverter Powerful Operation

    Function of RA Indoor Unit SiBE121135_A 1.15 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 the [POWERFUL] button is pressed, the fan speed and target temperature are converted to the following states for 20 minutes.

  • Page 105: Multi-Colored Indicator Lamp / Timer Lamp

    SiBE121135_A Function of RA Indoor Unit 1.16 Multi-Colored Indicator Lamp / TIMER Lamp Features Wall Mounted Type: FTXG Series Current operation mode is displayed in color of the lamp of the indoor unit. Operating status can be monitored even in automatic operation in accordance with the actual operation mode. Multi-colored indicator lamp / TIMER lamp (R15294)

  • Page 106: Brightness Setting Of The Indoor Unit Display

    Function of RA Indoor Unit SiBE121135_A 4. Press the [Temp] button to adjust the brightness of the multi-colored indicator lamp. L (low) H (high) (R11913) 5. Press the [Mode] button for 5 seconds to exit from the brightness setting mode. (When the remote controller is left untouched for 60 seconds, it returns to the normal mode also.) 1.17 Brightness Setting of the Indoor Unit Display...

  • Page 107: Clock Setting

    SiBE121135_A Function of RA Indoor Unit 1.18 Clock Setting ARC466 Series The clock can be set by taking the following steps: ARC452 Series 1. Press the [CLOCK] button. → is displayed and MON and blink. 2. Press the [SELECT] button to set the clock to the current day of the week. 3.

  • Page 108: Weekly Timer Operation

    Function of RA Indoor Unit SiBE121135_A 1.19 WEEKLY TIMER Operation Outline FTXG, CTXS, FTXS, FVXG, FVXS series Up to 4 timer settings can be saved for each day of the week (up to 28 settings in total). The 3 items: “ON/OFF”, “temperature”, and “time” can be set. Detail The illustrations are for FTXG series as representative.
  • Page 109 SiBE121135_A Function of 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...
  • Page 110 Function of RA Indoor Unit SiBE121135_A 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 111 SiBE121135_A Function of 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...
  • Page 112 Function of RA Indoor Unit SiBE121135_A 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 113 SiBE121135_A Function of 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 114: Other Functions

    Function of RA Indoor Unit SiBE121135_A 1.20 Other Functions 1.20.1 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 the airflow is either stopped or made very weak thereby carrying out comfortable heating of the room.

  • Page 115: Function Of Sa Indoor Unit

    SiBE121135_A Function of SA Indoor Unit 2. Function of SA Indoor Unit 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 5 min.
  • Page 116 Function of SA Indoor Unit SiBE121135_A 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. (R16094) 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 117: Thermostat Sensor In Remote Controller

    SiBE121135_A Function of SA Indoor Unit 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.”...
  • Page 118 Function of SA Indoor Unit SiBE121135_A 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 119: Freeze Prevention Control

    SiBE121135_A Function of SA Indoor Unit 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 120: Hot Start Control (In Heating Operation Only)

    Function of SA Indoor Unit SiBE121135_A 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 121: Function Of Thermistor

    SiBE121135_A Function of Thermistor 3. Function of Thermistor The Illustrations are for the 4-room models as representative and have 4 lines of indoor unit system (A ~ D). The 3-room models have 3 lines (A ~ C) and the 5-room models have 5 lines (A ~ E).
  • Page 122 Function of Thermistor SiBE121135_A (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. 2.

  • Page 123: Control Specification

    SiBE121135_A Control Specification 4. Control Specification Mode Hierarchy Outline Air conditioner control has normal operation mode, forced operation mode, and power transistor test mode for installation and servicing. Detail Cooling Only Model Air conditioner control mode Forced operation mode Forced cooling operation (for pump down operation) Wiring error check operation Power transistor test mode Normal operation mode...

  • Page 124: Frequency Control

    Control Specification SiBE121135_A 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 125 SiBE121135_A Control Specification 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 upper limit frequency among the frequency upper limits of the following functions: Compressor protection, input current, discharge pipe temperature, low Hz high pressure...
  • Page 126 Control Specification SiBE121135_A 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 127: Controls At Mode Changing / Start-Up

    SiBE121135_A Control Specification Controls at Mode Changing / Start-up 4.3.1 Preheating Control Outline The inverter operation in open phase starts with the conditions of the outdoor temperature. ∗ This control does not work on the models 3MXS68G3V1B and 4MXS68F3V1B. Detail ON Condition When the outdoor temperature is below 10.5°C, the inverter operation in open phase starts.

  • Page 128: Compressor Protection Function

    Control Specification SiBE121135_A 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) 40/50/52/58 class 68/75/80/90 class A (Hz) B (Hz) C (Hz)

  • Page 129: Input Current Control

    SiBE121135_A Control Specification Input Current Control Outline An input current is detected by the CT while the compressor is running, and the frequency upper limit is set from the input current. In case of heat pump models, this control which is the upper limit control of the frequency takes priority over the lower limit control of four way valve operation compensation.

  • Page 130: Heating Peak-Cut Control

    Control Specification SiBE121135_A 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 131: Outdoor Fan Control

    SiBE121135_A Control Specification Outdoor Fan Control 1. Fan ON control to cool down the electrical box The outdoor fan is turned ON when the electrical box temperature is high while the compressor is OFF. 2. Fan OFF control during defrosting The outdoor fan is turned OFF while defrosting.

  • Page 132: Defrost Control

    Control Specification SiBE121135_A 4.10 Defrost Control Outline Defrosting is carried out by the cooling cycle (reverse cycle). The defrosting time or outdoor heat exchanger temperature must be more than a certain value to finish. Detail Conditions for Starting Defrost The starting conditions are determined with the outdoor temperature and the outdoor heat exchanger temperature.

  • Page 133: Low Hz High Pressure Limit

    SiBE121135_A 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 dropping zone, and the frequency control is carried out according to each zone.
  • Page 134 Control Specification SiBE121135_A Detail The followings are the examples of the outdoor electronic expansion valve control which function in each operation mode. Operation pattern : Holding Functions — : No Functions When power is turned on Fully closed when power is turned on —...

  • Page 135: Pressure Equalizing Control

    SiBE121135_A Control Specification 4.12.1 Fully Closing with Power on The outdoor 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 outdoor electronic expansion valve opens, and develops the pressure equalization.
  • Page 136 Control Specification SiBE121135_A 4.12.8 Control for 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 outdoor electronic expansion valve opens according to the outdoor temperature and the operation frequency, and operates for a specified time, and then stops.

  • Page 137: Malfunctions

    SiBE121135_A Control Specification 4.12.11Target Discharge Pipe Temperature Control The target discharge pipe temperature is obtained from the indoor and outdoor heat exchanger temperature, and the outdoor 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 138 Control Specification SiBE121135_A 4.13.3 Refrigerant Shortage Control Outline I : Detecting by power consumption If the input current is below the specified value and the frequency is higher than the specified frequency, it is regarded as refrigerant shortage. The input current is low comparing with that in the normal operation when refrigerant is insufficient, and refrigerant shortage is detected by checking input current.

  • Page 139: Part 5 Remote Controller

    SiBE121135_A Part 5 Remote Controller 1. RA Indoor Unit..................129 1.1 FTXG25/35/50JV1BW(A), CTXS15/35K2V1B, FTXS20/25K2V1B ................129 1.2 FTXS35/42/50K2V1B ................131 1.3 FTXS25/35/42/50J2V1B, FTXS60/71GV1B.........133 1.4 ATXS20/25/35/42/50G2V1B ..............135 1.5 FVXG25/35/50K2V1B ................137 1.6 FVXS25/35/50FV1B ................139 1.7 FLXS25/35/50/60BAVMB..............141 1.8 FDXS25/35E7VMB, FDXS50/60C7VMB..........143 2. SA Indoor Unit..................145 2.1 BRC1D528 ...................145 Remote Controller...

  • Page 140: Ra Indoor Unit

    Refer to the following pages for detail. 1 POWERFUL operation P.93 Note: Refer to the operation manual of applicable model for detail. You can download operation manual from ‘DISTRIBUTOR’S PAGE’: DISTRIBUTOR’S PAGE → Product Information → Operation/Installation Manual (URL: http://global.daikin.com/Daikin/global/Distributors_admin/user_mng/login.php) Remote Controller...

  • Page 141: Mode Button

    4 Auto swing setting P.76 7 Clock setting P.96 Note: Refer to the operation manual of applicable model for detail. You can download operation manual from ‘DISTRIBUTOR’S PAGE’: DISTRIBUTOR’S PAGE → Product Information → Operation/Installation Manual (URL: http://global.daikin.com/Daikin/global/Distributors_admin/user_mng/login.php) Remote Controller...

  • Page 142: Ftxs35/42/50K2V1B

    Refer to the following pages for detail. 1 POWERFUL operation P.93 Note: Refer to the operation manual of applicable model for detail. You can download operation manual from ‘DISTRIBUTOR’S PAGE’: DISTRIBUTOR’S PAGE → Product Information → Operation/Installation Manual (URL: http://global.daikin.com/Daikin/global/Distributors_admin/user_mng/login.php) Remote Controller...
  • Page 143 2-area INTELLIGENT EYE P.91 operation 8 Clock setting P.96 Note: Refer to the operation manual of applicable model for detail. You can download operation manual from ‘DISTRIBUTOR’S PAGE’: DISTRIBUTOR’S PAGE → Product Information → Operation/Installation Manual (URL: http://global.daikin.com/Daikin/global/Distributors_admin/user_mng/login.php) Remote Controller...

  • Page 144: Ftxs25/35/42/50J2V1B, Ftxs60/71Gv1B

    1 POWERFUL operation P.93 2 Model Type Setting P.253 Note: Refer to the operation manual of applicable model for detail. You can download operation manual from ‘DISTRIBUTOR’S PAGE’: DISTRIBUTOR’S PAGE → Product Information → Operation/Installation Manual (URL: http://global.daikin.com/Daikin/global/Distributors_admin/user_mng/login.php) Remote Controller...

  • Page 145: Clock Button

    9 Clock setting P.96 (60/71 class) 6 ECONO operation P.87 Note: Refer to the operation manual of applicable model for detail. You can download operation manual from ‘DISTRIBUTOR’S PAGE’: DISTRIBUTOR’S PAGE → Product Information → Operation/Installation Manual (URL: http://global.daikin.com/Daikin/global/Distributors_admin/user_mng/login.php) Remote Controller...

  • Page 146: Atxs20/25/35/42/50G2V1B

    Refer to the following pages for detail. 1 ECONO operation P.87 2 POWERFUL operation P.93 Note: Refer to the operation manual of applicable model for detail. You can download operation manuals from ‘DISTRIBUTOR’S PAGE’: DISTRIBUTOR’S PAGE → Product Information → Operation/Installation Manual (URL: http://global.daikin.com/Daikin/global/Distributors_admin/user_mng/login.php) Remote Controller...

  • Page 147: Reset Button

    P.90 COMFORT AIRFLOW P.78, 6 Clock setting P.96 operation Note: Refer to the operation manual of applicable model for detail. You can download operation manuals from ‘DISTRIBUTOR’S PAGE’: DISTRIBUTOR’S PAGE → Product Information → Operation/Installation Manual (URL: http://global.daikin.com/Daikin/global/Distributors_admin/user_mng/login.php) Remote Controller...

  • Page 148: Fvxg25/35/50K2V1B

    Refer to the following pages for detail. 1 RADIANT operation P.81 Note: Refer to the operation manual of applicable model for detail. You can download operation manual from ‘DISTRIBUTOR’S PAGE’: DISTRIBUTOR’S PAGE → Product Information → Operation/Installation Manual (URL: http://global.daikin.com/Daikin/global/Distributors_admin/user_mng/login.php) Remote Controller...
  • Page 149 4 Auto swing setting P.76 7 Clock setting P.96 Note: Refer to the operation manual of applicable model for detail. You can download operation manual from ‘DISTRIBUTOR’S PAGE’: DISTRIBUTOR’S PAGE → Product Information → Operation/Installation Manual (URL: http://global.daikin.com/Daikin/global/Distributors_admin/user_mng/login.php) Remote Controller...

  • Page 150: Fvxs25/35/50Fv1B

    Refer to the following pages for detail. 1 POWERFUL operation P.93 Note: Refer to the operation manual of applicable model for detail. You can download operation manual from ‘DISTRIBUTOR’S PAGE’: DISTRIBUTOR’S PAGE → Product Information → Operation/Installation Manual (URL: http://global.daikin.com/Daikin/global/Distributors_admin/user_mng/login.php) Remote Controller...
  • Page 151 3 Auto swing setting P.76 5 Clock setting P.96 Note: Refer to the operation manual of applicable model for detail. You can download operation manual from ‘DISTRIBUTOR’S PAGE’: DISTRIBUTOR’S PAGE → Product Information → Operation/Installation Manual (URL: http://global.daikin.com/Daikin/global/Distributors_admin/user_mng/login.php) Remote Controller...

  • Page 152: Flxs25/35/50/60Bavmb

    1 HOME LEAVE operation P.88 2 POWERFUL operation P.93 Note: Refer to the operation manual of applicable model for detail. You can download operation manuals from ‘DISTRIBUTOR’S PAGE’: DISTRIBUTOR’S PAGE → Product Information → Operation/Installation Manual (URL: http://global.daikin.com/Daikin/global/Distributors_admin/user_mng/login.php) Remote Controller...
  • Page 153 3 Auto swing setting P.76 4 Clock setting P.96 Note: Refer to the operation manual of applicable model for detail. You can download operation manuals from ‘DISTRIBUTOR’S PAGE’: DISTRIBUTOR’S PAGE → Product Information → Operation/Installation Manual (URL: http://global.daikin.com/Daikin/global/Distributors_admin/user_mng/login.php) Remote Controller...

  • Page 154: Fdxs25/35E7Vmb, Fdxs50/60C7Vmb

    1 HOME LEAVE operation P.88 2 POWERFUL operation P.93 Note: Refer to the operation manual of applicable model for detail. You can download operation manuals from ‘DISTRIBUTOR’S PAGE’: DISTRIBUTOR’S PAGE → Product Information → Operation/Installation Manual (URL: http://global.daikin.com/Daikin/global/Distributors_admin/user_mng/login.php) Remote Controller...
  • Page 155 Refer to the following pages for detail. 3 Clock setting P.96 Note: Refer to the operation manual of applicable model for detail. You can download operation manuals from ‘DISTRIBUTOR’S PAGE’: DISTRIBUTOR’S PAGE → Product Information → Operation/Installation Manual (URL: http://global.daikin.com/Daikin/global/Distributors_admin/user_mng/login.php) Remote Controller...

  • Page 156: Sa Indoor Unit

    SA Indoor Unit SiBE121135_A 2. SA Indoor Unit BRC1D528 23 7 Remote Controller...
  • Page 157 SiBE121135_A SA Indoor Unit ON/OFF BUTTON SCHEDULE TIMER ICON Press the ON/OFF button to start or stop the system. This icon indicates that the schedule timer is enabled. OPERATION LAMP ACTION ICONS The operation lamp lights up during operation or These icons indicate the actions for each day of the blinks if a malfunction occurs.
  • Page 158 SA Indoor Unit SiBE121135_A SCHEDULE TIMER BUTTON This button enables or disables the schedule timer. TIME ADJUST BUTTON These buttons are used to adjust the clock or, when in programming mode, to adjust the programmed action time. Both buttons have an auto-repeat function. TEMPERATURE ADJUST BUTTONS These buttons are used to adjust the current setpoint or, when in programming mode, to adjust the...

  • Page 159: Part 6 Service Diagnosis

    SiBE121135_A Part 6 Service Diagnosis 1. Troubleshooting with LED ..............150 1.1 Indoor Unit....................150 1.2 Outdoor Unit ..................152 2. Problem Symptoms and Measures .............153 3. Service Check Function ..............154 3.1 RA Indoor Unit..................154 3.2 SA Indoor Unit ..................163 4. Code Indication on Remote Controller ..........167 4.1 RA Indoor Unit..................167 4.2 SA Indoor Unit ..................167 4.3 Sub Codes for SA Indoor Unit ..............168...
  • Page 160 SiBE121135_A 7.7 OL Activation (Compressor Overload) ..........209 7.8 Compressor Lock .................211 7.9 DC Fan Lock ..................212 7.10 Input Overcurrent Detection ..............213 7.11 Discharge Pipe Temperature Control...........214 7.12 High Pressure Control in Cooling ............215 7.13 Compressor Sensor System Abnormality ..........216 7.14 Position Sensor Abnormality ..............218 7.15 CT or Related Abnormality ..............220 7.16 Thermistor or Related Abnormality (Outdoor Unit).......222 7.17 Electrical Box Temperature Rise............224...

  • Page 161: Troubleshooting With Led

    SiBE121135_A Troubleshooting with LED 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 162 Troubleshooting with LED SiBE121135_A Floor Standing Type: FVXG Series Floor Standing Type: FVXS Series Operation lamp (green) Operation lamp (green) (R14646) (R11687) Floor / Ceiling Suspended Dual Type Duct Connected Type Operation lamp (green) Operation lamp (green) (R11688) (Q0340) BRC1D528 BRC1E52A7, BRC1E52B7 Operation lamp (red) Operation lamp (green)

  • Page 163: Outdoor Unit

    SiBE121135_A Troubleshooting with LED Outdoor Unit The outdoor unit has a green LED (LED A) and red LEDs (LED 1 ~ LED 5) on the PCB. When the microcomputer works in order, the LED A blinks, and when the system is in normal condition, the red LEDs are OFF.

  • Page 164: Problem Symptoms And Measures

    Problem Symptoms and Measures SiBE121135_A 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 types of the indoor units. Check if the indoor unit type is compatible with —...

  • Page 165: Service Check Function

    SiBE121135_A Service Check Function 3. Service Check Function RA Indoor Unit 3.1.1 ARC466 Series Remote Controller 1. When the timer cancel button is held down for 5 seconds, 00 is displayed on the temperature Check Method 1 display screen. Timer cancel button <...
  • Page 166 Service Check Function SiBE121135_A 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] button. 3.
  • Page 167 SiBE121135_A Service Check Function 5. Diagnose by the sound. beep : The left-side number does not correspond with the error code. tow consecutive beeps : The left-side number corresponds with the error code but the right-side number does not. long beep : Both the left-side and right-side numbers correspond with the error code. The numbers indicated when you hear the long beep are the error code.
  • Page 168 Service Check Function SiBE121135_A 3.1.2 ARC452 Series Remote Controller 1. When the timer cancel button is held down for 5 seconds, 00 is displayed on the temperature Check Method 1 display screen. Timer cancel button < ARC452 Series > (R14554) 2.
  • Page 169 SiBE121135_A Service Check Function Check Method 2 1. Press the 3 buttons ([TEMP] , [TEMP] , [MODE]) at the same time to enter the diagnosis mode. (R8381) The left-side number blinks. (R8382) 2. Press the [TEMP] button and change the number until you hear the two consecutive beeps or the long beep.
  • Page 170 Service Check Function SiBE121135_A 5. Press the [TEMP] button and change the number until you hear the long beep. (R8383) 6. Diagnose by the sound. beep : The left-side number does not correspond with the error code. two consecutive beeps : The left-side number corresponds with the error code but the right-side number does not.
  • Page 171 SiBE121135_A Service Check Function 3.1.3 ARC433 Series Remote Controller 1. When the timer cancel button is held down for 5 seconds, 00 is displayed on the temperature Check Method 1 display screen. Timer cancel button (R14555) < ARC433 Series > 2.
  • Page 172 Service Check Function SiBE121135_A Check Method 2 1. Press the center of the [TEMP] button and the [MODE] button at the same time to enter the diagnosis mode. (R4272) The left-side number blinks. (R14967) 2. Press the [TEMP] button and change the number until you hear the two consecutive beeps or the long beep.
  • Page 173 SiBE121135_A Service Check Function 5. Press the [TEMP] button and change the number until you hear the long beep. (R4277) 6. Diagnose by the sound. beep : The left-side number does not correspond with the error code. two consecutive beeps : The left-side number corresponds with the error code but the right-side number does not.

  • Page 174: Sa Indoor Unit

    Service Check Function SiBE121135_A SA Indoor Unit 3.2.1 Relations between Modes BRC1D528 The following modes can be selected by using the [Inspection / Test] button on the remote controller. Press the [INSPECTION/TEST OPERATION] button for more Service data can be obtained. Indoor unit settings can be made.
  • Page 175 SiBE121135_A Service Check Function BRC1E52A7, BRC1E52B7 <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 176 Service Check Function SiBE121135_A 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 177 SiBE121135_A Service Check Function 3.2.3 BRC1E52A7, BRC1E52B7 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 (R17163) (1) Check if it is error or warning.

  • Page 178: Code Indication On Remote Controller

    Code Indication on Remote Controller SiBE121135_A 4. Code Indication on Remote Controller RA Indoor Unit 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 (floor / ceiling, duct) Radiant panel temperature rise, indoor electronic expansion valve (motor operated valve) abnormality, freeze-up protection control...

  • Page 179: Sub Codes For Sa Indoor Unit

    SiBE121135_A Code Indication on Remote Controller Sub Codes for SA Indoor Unit If an error code like the one shown below is displayed when the navigation remote controller (BRC1E52A7, BRC1E52B7) is in use, make a detailed diagnosis or a diagnosis of the relevant unit referring to the attached list.

  • Page 180: Outdoor Unit

    Code Indication on Remote Controller SiBE121135_A 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 h 00 Normal condition —...

  • Page 181: Troubleshooting For Ra Indoor Unit

    SiBE121135_A Troubleshooting for RA Indoor Unit 5. Troubleshooting for RA Indoor Unit Indoor Unit PCB Abnormality Error Code Method of Error The system checks if the circuit works properly within the microcomputer of the indoor unit. Detection Error Decision The system cannot set the internal settings. Conditions Supposed Wrong models interconnected...
  • Page 182 Troubleshooting for RA Indoor Unit SiBE121135_A Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check the combination of the indoor and outdoor unit. Match the compatible models. ∗ To secure the connection, Check the connection of once disconnect the connector connectors (See Note).

  • Page 183: Freeze-Up Protection Control Or Heating Peak-Cut Control

    SiBE121135_A Troubleshooting for RA Indoor Unit Freeze-up Protection Control or Heating Peak-cut Control Error Code Method of Error Freeze-up protection control Detection During cooling operation, the freeze-up protection control (operation halt) is activated according to the temperature detected by the indoor heat exchanger thermistor. Heating peak-cut control During heating operation, the indoor heat exchanger temperature is used for the heating peak-cut control (operation halt, outdoor fan stop, etc.)

  • Page 184: Fan Motor Or Related Abnormality

    Troubleshooting for RA Indoor Unit SiBE121135_A Fan Motor or Related Abnormality 5.3.1 DC Motor (Wall Mounted Type, Floor Standing Type) Error Code Method of Error The rotation speed detected by the Hall IC during fan motor operation is used to determine Detection abnormal fan motor operation.
  • Page 185 SiBE121135_A Troubleshooting for RA Indoor Unit Troubleshooting FTXG, FTXS35/42/50K, FTXS-J, FTXS-G, ATXS, FVXG, FVXS Series Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.02 Refer to P.231 Check the power supply voltage.
  • Page 186 Troubleshooting for RA Indoor Unit SiBE121135_A Troubleshooting CTXS, FTXS20/25K Series Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.03 Note: The motor may break when the Turn off the power supply. motor connector is disconnected Refer to P.231 (Unplug the power cable or turn...
  • Page 187 SiBE121135_A Troubleshooting for RA Indoor Unit 5.3.2 AC Motor (Floor / Ceiling Suspended Dual Type, Duct Connected Type) Error Code Method of Error The rotation speed detected by the Hall IC during fan motor operation is used to determine Detection abnormal fan motor operation.
  • Page 188 Troubleshooting for RA Indoor Unit SiBE121135_A Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.04 Check the power supply voltage. Refer to P.232 Is the voltage fluctuation Correct the power supply.

  • Page 189: Radiant Panel Temperature Rise, Indoor Electronic Expansion Valve (Motor Operated Valve) Abnormality, Freeze-Up Protection Control (Fvxg Series Only)

    SiBE121135_A Troubleshooting for RA Indoor Unit Radiant Panel Temperature Rise, Indoor Electronic Expansion Valve (Motor Operated Valve) Abnormality, Freeze-up Protection Control (FVXG Series Only) Error Code Method of Error Radiant panel temperature rise During RADIANT operation, high temperature control (e.g., operation halt, indoor electronic Detection expansion valve closure) is activated according to the temperature detected by the radiant panel thermistors.
  • Page 190 Troubleshooting for RA Indoor Unit SiBE121135_A Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. ∗ When the outdoor temperature is below the Check No.01 Check the operation condition. lower limit for cooling operation (10˚C), the Refer to P.230 freeze-up protection control is activated and the...

  • Page 191: Thermistor Or Related Abnormality (Ra Indoor Unit)

    SiBE121135_A Troubleshooting for RA Indoor Unit Thermistor or Related Abnormality (RA Indoor Unit) C4, C9, CE Error Code Method of Error The temperatures detected by the thermistors are used to determine thermistor errors. Detection Error Decision The thermistor input is more than 4.96 V or less than 0.04 V during compressor operation. Conditions Supposed Disconnection of connector...

  • Page 192: Front Panel Open / Close Fault (Ftxg Series Only)

    Troubleshooting for RA Indoor Unit SiBE121135_A Front Panel Open / Close Fault (FTXG Series Only) Error Code Method of Error Detection Error Decision If the error repeats, the system is shut down. Conditions Supposed Defective reduction motor Causes Malfunction or deterioration of the front panel mechanism Defective limit switch Troubleshooting Be sure to turn off the power switch before connecting or disconnecting...

  • Page 193: Signal Transmission Error (Between Indoor Unit And Outdoor Unit)

    SiBE121135_A Troubleshooting for RA Indoor Unit Signal Transmission Error (between Indoor Unit and Outdoor Unit) Error Code Method of Error The data received from the outdoor unit in signal transmission is checked whether it is normal. Detection Error Decision The data sent from the outdoor unit cannot be received normally, or the content of the data is abnormal.

  • Page 194: Unspecified Voltage (Between Indoor Unit And Outdoor Unit)

    Troubleshooting for RA Indoor Unit SiBE121135_A Unspecified Voltage (between Indoor Unit and Outdoor Unit) Error Code Method of Error The supply power is detected for its requirements (different from pair type and multi type) by the Detection indoor / outdoor transmission signal. Error Decision The pair type and multi type are interconnected.

  • Page 195: Troubleshooting For Sa Indoor Unit

    SiBE121135_A Troubleshooting for SA Indoor Unit 6. Troubleshooting for SA Indoor Unit Indoor Unit PCB Abnormality Error Code Method of Error The system checks the data from EEPROM. Detection Error Decision The data could not be correctly received from the EEPROM. Conditions EEPROM : Type of nonvolatile memory.

  • Page 196: Drain Level Control System Abnormality

    Troubleshooting for SA Indoor Unit SiBE121135_A Drain Level Control System Abnormality Error Code Method of Error The float switch detects error. Detection Error Decision When the water level reaches its upper limit and when the float switch turns OFF Conditions Supposed Defective drain pump Causes...
  • Page 197 SiBE121135_A Troubleshooting for SA Indoor Unit Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Is the unit a ceiling suspended (FHQ) type? Is the optional drain raising mechanism connected? Is the short circuit connector...

  • Page 198: Fan Motor Or Related Abnormality

    Troubleshooting for SA Indoor Unit SiBE121135_A Fan Motor or Related Abnormality 6.3.1 AC Motor (FFQ, FHQ, FDBQ Series) Error Code Method of Error The signal from the fan motor detects abnormal fan speed. Detection Error Decision The fan rotations are not detected while the output voltage to the fan is at its maximum Conditions Supposed Disconnection, short circuit or disengagement of connector in fan motor harness...
  • Page 199 SiBE121135_A Troubleshooting for SA Indoor Unit Note: 1. Check the connector of fan motor. (Power supply cable) 2. Turn OFF the power supply. 3. Measure the resistance between the terminals at the motor side connectors to check that there is no short circuit, while the connector is disconnected. FFQ, FHQ series (1) Red (2) White...
  • Page 200 Troubleshooting for SA Indoor Unit SiBE121135_A 6.3.2 DC Motor (FCQG Series, FBQ35/50C8VEB) Error Code Method of Error The signal from the fan motor detects abnormal fan speed. Detection Error Decision The fan rotation does not increase. Conditions Supposed Foreign matters stuck in the fan Disconnection of connector Causes Defective fan motor...
  • Page 201 SiBE121135_A Troubleshooting for SA Indoor Unit Note: Check the resistance between each pin twice with the fan motor connector disconnected. Exchange the test leads (red / black) of the tester at the second check. Criterion value: Higher than 1Ω both times. 1st check 2nd check Tester...
  • Page 202 Troubleshooting for SA Indoor Unit SiBE121135_A 6.3.3 DC Motor (FBQ60C8VEB) Error Code Method of Error The signal from the fan motor detects abnormal fan speed. Detection Error Decision The fan rotation does not increase. Conditions Supposed Foreign matters stuck in the fan Disconnection of connector Causes Defective fan motor...
  • Page 203 SiBE121135_A Troubleshooting for SA Indoor Unit Note: Check the resistance between each pin with the fan motor connector disconnected. Criterion value: Higher than 1Ω on the basis of GND and Vcc. Tester Resistance Black Ω Ω Please fill in the blanks Ω...

  • Page 204: Swing Motor Lock (Fhq Series Only)

    Troubleshooting for SA Indoor Unit SiBE121135_A Swing Motor Lock (FHQ Series Only) Error Code Method of Error The error is detected by the limit switch when the motor turns. Detection Error Decision When the ON/OFF micro-switch for position detection cannot be reversed even though the Conditions swing motor is energized for a specified amount of time (about 30 seconds).

  • Page 205: Drain System Abnormality

    SiBE121135_A Troubleshooting for SA Indoor Unit Drain System Abnormality Error Code Method of Error Water leakage is detected based on the float switch ON/OFF changeover while the compressor is not operating. Detection Error Decision When the float switch changes from ON to OFF while the compressor is OFF Conditions Supposed Error in the drain pipe installation...

  • Page 206: Thermistor Or Related Abnormality (Sa Indoor Unit)

    Troubleshooting for SA Indoor Unit SiBE121135_A Thermistor or Related Abnormality (SA Indoor Unit) C4, C5, C9 Error Code Method of Error The temperatures detected by the thermistors determine thermistor errors. Detection Error Decision The thermistor input is more than 4.96 V or less than 0.04 V during compressor operation. Conditions Supposed Disconnection of connector...

  • Page 207: Remote Controller Thermistor Abnormality

    SiBE121135_A Troubleshooting for SA Indoor Unit Remote Controller Thermistor Abnormality Error Code Method of Error Even if remote controller thermistor is faulty, system is possible to operate by system thermistor. Malfunction detection is carried out by the temperature detected by remote controller thermistor. Detection Error Decision The remote controller thermistor is disconnected or shorted while the unit is running.

  • Page 208: Signal Transmission Error (Between Indoor Unit And Remote Controller)

    Troubleshooting for SA Indoor Unit SiBE121135_A Signal Transmission Error (between Indoor Unit and Remote Controller) Error Code Method of Error In case of controlling with 2 remote controllers, check the system using microcomputer if signal Detection transmission between indoor unit and remote controller (main and sub) is normal. Error Decision Normal transmission does not continue for specified period.

  • Page 209: Signal Transmission Error (Between Main Remote Controller And Sub Remote Controller)

    SiBE121135_A Troubleshooting for SA Indoor Unit Signal Transmission Error (between MAIN Remote Controller and SUB Remote Controller) Error Code Method of Error In case of controlling with 2 remote controllers, check the system using microcomputer if signal Detection transmission between indoor unit and remote controller (main and sub) is normal. Error Decision Normal transmission does not continue for specified period.

  • Page 210: Field Setting Abnormality

    Troubleshooting for SA Indoor Unit SiBE121135_A 6.10 Field Setting Abnormality Error Code Method of Error Detection Error Decision Incorrect field setting 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 Troubleshooting Be sure to turn off the power switch before connecting or disconnecting...

  • Page 211: Troubleshooting For Outdoor Unit

    SiBE121135_A Troubleshooting for Outdoor Unit 7. Troubleshooting for Outdoor Unit Refrigerant Shortage Error Code Outdoor Unit LED ∗ LED5 is equipped only on the 5-room model. Display Method of Error Refrigerant shortage detection I : Detection Refrigerant shortage is detected by checking the input current value and the compressor output frequency.
  • Page 212 Troubleshooting for Outdoor Unit SiBE121135_A 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.230 Any thermistor Replace the thermistor(s) disconnected? ∗ Discharge pipe thermistor position.

  • Page 213: Low-Voltage Detection Or Over-Voltage Detection

    SiBE121135_A Troubleshooting for Outdoor Unit Low-voltage Detection or Over-voltage Detection Error Code Outdoor Unit LED ∗ LED5 is equipped only on the 5-room model. Display Method of Error Indoor Unit Detection The zero-cross detection of the power supply is evaluated by the indoor unit PCB. Outdoor Unit Low-voltage detection: An abnormal voltage drop is detected by the DC voltage detection circuit.
  • Page 214 Troubleshooting for Outdoor Unit SiBE121135_A Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check the power supply voltage. Voltage as rated? Correct the power supply. Check the connection of the compressor harness.

  • Page 215: Signal Transmission Error (On Outdoor Unit Pcb)

    SiBE121135_A Troubleshooting for Outdoor Unit Signal Transmission Error (on Outdoor Unit PCB) Error Code Outdoor Unit LED ∗ LED5 is equipped only on the 5-room model. Display Method of Error Communication error between microcomputer mounted on the main PCB and PM1. Detection Error Decision The abnormality is determined when the data sent from the PM1 can not be received for 9...

  • Page 216: Unspecified Voltage (Between Indoor Unit And Outdoor Unit) / Anti-Icing Function In Other Rooms

    Troubleshooting for Outdoor Unit SiBE121135_A Unspecified Voltage (between Indoor Unit and Outdoor Unit) / Anti-icing Function in Other Rooms UA, UH Error Code Outdoor Unit LED ∗ LED5 is equipped only on the 5-room model. Display Method of Error A wrong connection is detected by checking the combination of indoor and outdoor units on the Detection microcomputer.

  • Page 217: Anti-Icing Control For Indoor Unit

    SiBE121135_A Troubleshooting for Outdoor Unit Anti-icing Control for Indoor Unit Error Code Outdoor Unit LED ∗ LED5 is equipped only on the 5-room model. Display Method of Error During cooling operation, indoor unit icing is detected by checking the temperatures sensed by Detection the indoor heat exchanger thermistor and room temperature thermistor that are located in a shut-down room.
  • Page 218 Troubleshooting for Outdoor Unit SiBE121135_A 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.230 Check the wiring and piping. Check No.12 Wrong wiring or Activate the wiring error check piping? Refer to P.234...

  • Page 219: Outdoor Unit Pcb Abnormality

    SiBE121135_A Troubleshooting for Outdoor Unit Outdoor Unit PCB Abnormality Error Code Outdoor Unit LED ∗ LED5 is equipped only on the 5-room model. Display Method of Error Detect within the program of the microcomputer. Detection Error Decision The program of the microcomputer is in abnormal running order. Conditions Supposed Defective outdoor unit PCB...

  • Page 220: Ol Activation (Compressor Overload)

    Troubleshooting for Outdoor Unit SiBE121135_A OL Activation (Compressor Overload) Error Code Outdoor Unit LED ∗ LED5 is equipped only on the 5-room model. Display Method of Error A compressor overload is detected through compressor OL. Detection Error Decision If the error repeats, the system is shut down. Conditions Reset condition: Continuous run for about 60 minutes without any other error Supposed...
  • Page 221 SiBE121135_A Troubleshooting for Outdoor Unit Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.01 Refer to P.230 Discharge pipe thermistor Insert the thermistor in disconnected? position. Check No.12 Refer to P.234 Check No.

  • Page 222: Compressor Lock

    Troubleshooting for Outdoor Unit SiBE121135_A Compressor Lock Error Code Outdoor Unit LED ∗ LED5 is equipped only on the 5-room model. Display Method of Error A compressor lock is detected by checking the compressor running condition through the Detection position detection circuit. Error Decision Judging from the current waveform generated when high-frequency voltage is applied to the compressor.

  • Page 223: Dc Fan Lock

    SiBE121135_A Troubleshooting for Outdoor Unit DC Fan Lock Error Code Outdoor Unit LED ∗ LED5 is equipped only on the 5-room model. Display Method of Error An error is determined with the high-voltage fan motor rotation speed detected by the Hall IC. Detection Error Decision The fan does not start in 30 seconds even when the fan motor is running.

  • Page 224: Input Overcurrent Detection

    Troubleshooting for Outdoor Unit SiBE121135_A 7.10 Input Overcurrent Detection Error Code Outdoor Unit LED ∗ LED5 is equipped only on the 5-room model. Display Method of Error Detected by checking the input current value Detection Error Decision The input current is at a certain value (depending on the condition) for 2.5 seconds. Conditions The compressor halts if the error occurs, and restarts automatically after 3-minute standby.

  • Page 225: Discharge Pipe Temperature Control

    SiBE121135_A Troubleshooting for Outdoor Unit 7.11 Discharge Pipe Temperature Control Error Code Outdoor Unit LED ∗ LED5 is equipped only on the 5-room model. Display Method of Error Detected by the discharge pipe thermistor Detection Error Decision If the temperature detected by the discharge pipe thermistor rises above °C, the Conditions compressor stops.

  • Page 226: High Pressure Control In Cooling

    Troubleshooting for Outdoor Unit SiBE121135_A 7.12 High Pressure Control in Cooling Error Code Outdoor Unit LED ∗ LED5 is equipped only on the 5-room model. Display Method of Error High-pressure control (operation halt, frequency drop, etc.) is activated in cooling mode if the Detection temperature sensed by the outdoor heat exchanger thermistor exceeds the limit.

  • Page 227: Compressor Sensor System Abnormality

    SiBE121135_A Troubleshooting for Outdoor Unit 7.13 Compressor Sensor System Abnormality Error Code Outdoor Unit LED ∗ LED5 is equipped only on the 5-room model. Display Method of Error Fault condition is identified by the power supply voltage and the DC voltage which is Detection detected before the compressor startup.
  • Page 228 Troubleshooting for Outdoor Unit SiBE121135_A 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 the reactor properly. Compressor connection check Connect the compressor Connection OK? properly.

  • Page 229: Position Sensor Abnormality

    SiBE121135_A Troubleshooting for Outdoor Unit 7.14 Position Sensor Abnormality Error Code Outdoor Unit LED ∗ LED5 is equipped only on the 5-room model. Display Method of Error A compressor start-up failure is detected by checking the compressor running condition through the position detection circuit.
  • Page 230 Troubleshooting for Outdoor Unit SiBE121135_A 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.236 Turn off the power. Check No.18 Check the power supply voltage. Refer to P.238 Voltage as rated? Correct the power supply.

  • Page 231: Ct Or Related Abnormality

    SiBE121135_A Troubleshooting for Outdoor Unit 7.15 CT or Related Abnormality Error Code Outdoor Unit LED ∗ LED5 is equipped only on the 5-room model. Display Method of Error A CT or related error is detected by checking the compressor running frequency and CT- Detection detected input current.
  • Page 232 Troubleshooting for Outdoor Unit SiBE121135_A 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.236 again. Check No.21 Start operation.

  • Page 233: Thermistor Or Related Abnormality (Outdoor Unit)

    SiBE121135_A Troubleshooting for Outdoor Unit 7.16 Thermistor or Related Abnormality (Outdoor Unit) H9, J3, J6, J8, J9, P4 Error Code Outdoor Unit LED ∗ LED5 is equipped only on the 5-room model. Display Method of Error This type of error is detected by checking the thermistor input voltage to the microcomputer. Detection A thermistor error is detected by checking the temperature sensed by each thermistor.
  • Page 234 Troubleshooting for Outdoor Unit SiBE121135_A Troubleshooting In case of Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.01 Turn on the power again. Refer to P.230 Error displayed Reconnect the connectors again on remote or thermistors.

  • Page 235: Electrical Box Temperature Rise

    SiBE121135_A Troubleshooting for Outdoor Unit 7.17 Electrical Box Temperature Rise Error Code Outdoor Unit LED ∗ LED5 is equipped only on the 5-room model. Display Method of Error An electrical box temperature rise is detected by checking the radiation fin thermistor with the Detection compressor off.
  • Page 236 Troubleshooting for Outdoor Unit SiBE121135_A 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.238 again. To cool the electrical components, the outdoor fan starts when the radiation fin temperature rises...

  • Page 237: Radiation Fin Temperature Rise

    SiBE121135_A Troubleshooting for Outdoor Unit 7.18 Radiation Fin Temperature Rise Error Code Outdoor Unit LED ∗ LED5 is equipped only on the 5-room model. Display Method of Error A radiation fin temperature rise is detected by checking the radiation fin temperature with the Detection compressor on.
  • Page 238 Troubleshooting for Outdoor Unit SiBE121135_A Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.17 Turn off the power and turn it on Refer to P.238 again to start the system. Check No.19 Refer to P.239 Has the PCB been...

  • Page 239: Output Overcurrent Detection

    SiBE121135_A Troubleshooting for Outdoor Unit 7.19 Output Overcurrent Detection Error Code Outdoor Unit LED ∗ LED5 is equipped only on the 5-room model. Display Method of Error An output overcurrent is detected by checking the current that flows in the inverter DC section. Detection Error Decision A position signal error occurs while the compressor is running.
  • Page 240 Troubleshooting for Outdoor Unit SiBE121135_A 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 Refer to P.236 overcurrent after the wires have been disconnected and reconnected for part replacement, check the wiring again.

  • Page 241: Check

    SiBE121135_A Check 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 graphs below.

  • Page 242: Fan Motor Connector Check

    Check SiBE121135_A Fan Motor Connector Check Check No.02 FTXG, FTXS35/42/50K, FTXS-J, FTXS-G, ATXS, FVXG, FVXS Series 1. Check the connection of connector. 2. Check motor power supply voltage output (pins 4 - 7). 3. Check motor control voltage (pins 4 - 3). 4.

  • Page 243: Hall Ic Check

    SiBE121135_A Check Hall IC Check Check No.04 FLXS, FDXS Series 1. Check the connector connection. 2. With the power on, operation off, and the connector connected, check the following. ∗Output voltage of about 5 V between pins 1 and 3. ∗Generation of 3 pulses between pins 2 and 3 when the fan motor is operating.

  • Page 244: Power Supply Waveform Check

    Check SiBE121135_A Power Supply Waveform Check Check No.11 Measure the power supply waveform between No. 1 and No. 2 on the terminal board, and check the waveform disturbance. Check to see if the power supply waveform is a sine wave (Fig.1). Check to see if there is waveform disturbance near the zero cross (sections circled in Fig.2) [Fig.1] [Fig.2]...

  • Page 245: Outdoor Electronic Expansion Valve Check

    SiBE121135_A Check Outdoor Electronic Expansion Valve Check Check No.12 Conduct the followings to check the outdoor 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 246: Four Way Valve Performance Check

    Check SiBE121135_A 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 247: Inverter Analyzer Check

    SiBE121135_A Check Inverter Analyzer Check Check No.15 Characteristics Inverter analyzer: RSUK0917C If an abnormal stop occurs due to compressor startup failure or overcurrent output when using an inverter unit, it is difficult to judge whether the stop is caused by the compressor failure or some other failure (main PCB, power module, etc.).

  • Page 248: Rotation Pulse Check On The Outdoor Unit Pcb

    Check SiBE121135_A Diagnose method (Diagnose according to 6 LEDs lighting status.) (1) If all the LEDs are lit uniformly, the compressor is defective. → Replace the compressor. (2) If the LEDs are not lit uniformly, check the power module. → Refer to Check No.22. (3) If NG in Check No.22, replace the power module.

  • Page 249: Installation Condition Check

    SiBE121135_A Check 8.11 Installation Condition Check Check No.17 Installation condition check Check the allowable dimensions of the air Change the installation suction and location or direction. discharge area. Is the discharged air Change the installation short-circuited? location or direction. Is the outdoor heat Clean the outdoor heat exchanger very dirty? exchanger.

  • Page 250: Outdoor Fan System Check

    Check SiBE121135_A 8.13 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. 16. functioning. (R15128) 8.14 Capacitor Voltage Check Check No.21 Before this check, be sure to check the main circuit for short circuit.

  • Page 251: Power Module Check

    SiBE121135_A Check 8.15 Power Module Check Check No.22 Note: Check to make sure that the voltage between (+) and (–) of the power module (PM1) is approx. 0 V before checking. Disconnect the compressor harness connector from the outdoor unit PCB. To disengage the connector, press the protrusion on the connector.

  • Page 252: Part 7 Trial Operation And Field Settings

    SiBE121135_A Part 7 Trial Operation and Field Settings 1. Pump Down Operation................242 2. Forced Operation ................243 3. Wiring Error Check Function ...............244 4. Trial Operation ..................246 4.1 RA Indoor Unit..................246 4.2 SA Indoor Unit ..................248 5. Field Settings ..................250 5.1 Outdoor Unit ..................250 5.2 RA Indoor Unit..................253 5.3 SA Indoor Unit ..................258 6.

  • Page 253: Pump Down Operation

    SiBE121135_A 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 254: Forced Operation

    Forced Operation SiBE121135_A 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 255: Wiring Error Check Function

    SiBE121135_A 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 stop valve cover of the outdoor unit.
  • Page 256 Wiring Error Check Function SiBE121135_A 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 257: Trial Operation

    SiBE121135_A Trial Operation 4. Trial Operation RA Indoor Unit Outline 1. Measure the power supply voltage and make sure that it falls in the specified range. 2. Trial operation should be carried out in either cooling or heating operation. In cooling operation, select the lowest programmable temperature; in heating operation, select the highest programmable temperature.
  • Page 258 Trial Operation SiBE121135_A 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 the operation mode.

  • Page 259: Sa Indoor Unit

    SiBE121135_A Trial Operation SA Indoor Unit 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. Go through the following checklist: Checkpoints Cautions or warnings Are all units securely installed? Dangerous for turning over during storm...
  • Page 260 Trial Operation SiBE121135_A BRC1E52A7, BRC1E52B7 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 261: Field Settings

    SiBE121135_A Field Settings 5. Field Settings Outdoor Unit 5.1.1 Priority Room Setting Outdoor 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 262 Field Settings SiBE121135_A 5.1.2 COOL / HEAT Mode Lock Outline 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 263 SiBE121135_A Field Settings 5.1.3 NIGHT QUIET Mode Outline 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 264: Ra Indoor Unit

    Field Settings SiBE121135_A RA Indoor Unit 5.2.1 Model Type Setting ARC466A6, ARC466A9 This remote controller is common to the heat pump model and cooling only model. The heating operation will not be available when the jumper on the left side is cut. Replace the remote controller if you cut the jumper on the left side.
  • Page 265 SiBE121135_A Field Settings FTXG Series CTXS, FTXS20/25K ADDRESS EXIST (R16497) (Bottom of electrical box) (R12036) FTXS35/42/50K, FTXS-J, ATXS Series FTXS-G Series ADDRESS ADDRESS (R11735) EXIST (R12216) Caution Replace the PCB if you accidentally cut a wrong jumper. Jumpers are necessary for electronic circuit. Improper operation may occur if you cut any of them.
  • Page 266 Field Settings SiBE121135_A (3)Turn on the DIP switch [S2W-1] on the service PCB. Service PCB 1 2 3 4 (R14630) ∗ Keep the other switches as factory setting (OFF). FVXS Series 1) Remove the front grille. 2) Lift the sensor PCB fixing plate and remove the front shield plate. 3) Disconnect the connectors [S1] [S41] [S42].
  • Page 267 SiBE121135_A Field Settings Floor / Ceiling Cut the jumper JA on PCB. Suspended Dual Type ADDRESS JA EXIST (R11732) Caution Replace the PCB if you accidentally cut a wrong jumper. Jumpers are necessary for electronic circuit. Improper operation may occur if you cut any of them.

  • Page 268: Jumper And Switch Settings

    Field Settings SiBE121135_A 5.2.3 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 269: Sa Indoor Unit

    SiBE121135_A Field Settings SA Indoor Unit 5.3.1 How to Change the Field Settings Outline If optional accessories are mounted on the indoor unit, the indoor unit setting may have to be changed. Refer to the instruction manual for each optional accessory. Wired remote BRC1D528 controller...
  • Page 270 Field Settings SiBE121135_A BRC1E52A7, BRC1E52B7 (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 ( (R12879)
  • Page 271 SiBE121135_A Field Settings 5.3.2 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 Longlife filter type...
  • Page 272 Field Settings SiBE121135_A 5.3.3 MAIN / SUB Setting when Using 2 Wired Remote Controllers Outline The MAIN / SUB setting is necessary when 1 indoor unit is controlled by 2 remote controllers. When you use 2 remote controllers (control panel and separate remote controller), set one to MAIN and the other to SUB.

  • Page 273: Silicon Grease On Power Transistor / Diode Bridge

    SiBE121135_A Silicon Grease on Power Transistor / Diode Bridge 6. Silicon Grease on Power Transistor / Diode Bridge Outline Apply the specified silicon grease to the heat radiation part of a power transistor / diode bridge when you replace an outdoor unit PCB. The silicon grease encourages the heat radiation of a power transistor / diode bridge.

  • Page 274: Part 8 Appendix

    SiBE121135_A Part 8 Appendix 1. Piping Diagrams..................264 1.1 Outdoor Unit ..................264 1.2 Indoor Unit....................269 2. Wiring Diagrams..................276 2.1 Outdoor Unit ..................276 2.2 Indoor Unit....................281 3. Removal Procedure (Booklet No.) ............289 Appendix...

  • Page 275: Piping Diagrams

    SiBE121135_A Piping Diagrams 1. Piping Diagrams Outdoor Unit 1.1.1 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...
  • Page 276 Piping Diagrams SiBE121135_A 4MKS75F2V1B OUTDOOR UNIT HEAT EXCHANGER OUTDOOR TEMPERATURE THERMISTOR ( DOA ) MOTOR OPERATED VALVE LIQUID PIPE THERMISTOR ( DLA ) 6.4CuT HEADER 9.5CuT ROOM A ( 6.4 CuT ) FILTER MOTOR OPERATED VALVE LIQUID PIPE THERMISTOR ( DLB ) 6.4CuT ROOM B ( 6.4 CuT )
  • Page 277 SiBE121135_A Piping Diagrams 1.1.2 Heat Pump 3MXS40K2V1B, 3MXS40K3V1B OUTDOOR UNIT HEAT EXCHANGER OUTDOOR TEMPERATURE THERMISTOR (DOA) HEADER ELECTRONIC EXPANSION VALVE LIQUID PIPE HEADER THERMISTOR ( DLA ) 9.5CuT 6.4CuT ROOM A ( 6.4 CuT ) FILTER ELECTRONIC EXPANSION VALVE LIQUID PIPE THERMISTOR ( DLB ) 6.4CuT FIELD...
  • Page 278 Piping Diagrams SiBE121135_A 3MXS68G2V1B, 3MXS68G3V1B OUTDOOR UNIT HEAT EXCHANGER OUTDOOR TEMPERATURE THERMISTOR (DOA) HEADER MOTOR OPERATED VALVE LIQUID PIPE THERMISTOR ( DLA ) HEADER 6.4CuT 9.5CuT ROOM A FILTER ( 6.4 CuT ) MOTOR OPERATED VALVE LIQUID PIPE THERMISTOR ( DLB ) 6.4CuT FIELD ROOM B...
  • Page 279 SiBE121135_A Piping Diagrams 4MXS80E2V3B, 4MXS80E3V3B OUTDOOR UNIT MOTOR OPERATED LIQUID PIPE HEAT EXCHANGER VALVE ( A ) THERMISTOR OUTDOOR TEMPERATURE ( ROOM-A ) 7.9CuT THERMISTOR 7.9CuT RECEIVER HEADER ROOM A 7.9CuT HEADER MOTOR OPERATED LIQUID PIPE ( 6.4 CuT ) 7.9CuT FILTER VALVE ( B )

  • Page 280: Indoor Unit

    Piping Diagrams SiBE121135_A Indoor Unit 1.2.1 Wall Mounted Type FTXG25/35JV1BW(A) FTXG50JV1BW(A) INDOOR UNIT INDOOR UNIT 6.4CuT 6.4CuT HEAT EXCHANGER HEAT EXCHANGER THERMISTOR THERMISTOR CROSS FLOW FAN CROSS FLOW FAN ON HEAT EXCH. ON HEAT EXCH. FIELD PIPING FIELD PIPING 6.4CuT 6.4CuT FAN MOTOR FAN MOTOR...
  • Page 281 SiBE121135_A Piping Diagrams FTXS50K2V1B, FTXS50J2V1B FTXS60GV1B ATXS50G2V1B INDOOR UNIT INDOOR UNIT ( 7.9CuT ) 6.4CuT HEAT EXCHANGER HEAT EXCHANGER THERMISTOR ON HEAT EXCH. CROSS FLOW FAN FIELD PIPING ( 6.4CuT ) THERMISTOR CROSS FLOW FAN ON HEAT EXCH. FAN MOTOR FIELD PIPING FIELD PIPING ( 12.7CuT )
  • Page 282 Piping Diagrams SiBE121135_A 1.2.2 Floor Standing Type FVXG25/35K2V1B FVXG50K2V1B INDOOR UNIT INDOOR UNIT RADIANT PANEL RADIANT PANEL THERMISTOR 6.4CuT THERMISTOR 6.4CuT THERMISTOR THERMISTOR HEAT EXCHANGER HEAT EXCHANGER THERMISTOR THERMISTOR ON HEAT EXCH. ON HEAT EXCH. CROSS FLOW FAN CROSS FLOW FAN FIELD PIPING FIELD PIPING 6.4CuT...
  • Page 283 SiBE121135_A Piping Diagrams 1.2.3 Floor / Ceiling Suspended Dual Type FLXS25/35BAVMB FLXS50/60BAVMB INDOOR UNIT INDOOR UNIT ( 6.4CuT ) ( 9.5CuT ) HEAT EXCHANGER HEAT EXCHANGER THERMISTOR THERMISTOR FIELD PIPING ON HEAT ON HEAT FIELD PIPING EXCH. ( 6.4CuT ) ( 6.4CuT ) EXCH.
  • Page 284 Piping Diagrams SiBE121135_A 1.2.5 Ceiling Mounted Cassette Type FCQG35/50/60FVEB REFRIGERANT FLOW COOLING HEATING HEAT EXCHANGER MODEL FCQG35FVEB 9.52 FCQG50FVEB 6.35 12.7 FCQG60FVEB LIQUID PIPE CONNECTION PORT φ A GAS PIPE CONNECTION PORT φ B C: 4D076993 FFQ25/35/50/60B9V1B Indoor heat exchanger Field piping φ...
  • Page 285 SiBE121135_A Piping Diagrams 1.2.6 Ceiling Suspended Type FHQ35/50/60BWV1B Indoor heat exchanger φ Field piping C1220T-O φ Field piping C1220T-O Outdoor unit Indoor unit MODEL FHQ35BWV1B FHQ50/60BWV1B 12.7 C: 4D037995P Appendix...
  • Page 286 Piping Diagrams SiBE121135_A 1.2.7 Ceiling Mounted Built-in Type FDBQ25B8V1 Heat exchanger Refrigerant flow Cooling Heating Refrigerant pipe connection port diameters Model Liquid Liquid pipe connection port φ9.52 φ6.35 FDBQ25B8V1 Gas pipe connection port C: 3TW20815-1B FBQ35/50/60C8VEB Refrigerant flow Heat exchanger Cooling Heating Refrigerant pipe connection port diameters...

  • Page 287: Wiring Diagrams

    SiBE121135_A Wiring Diagrams 2. Wiring Diagrams Outdoor Unit 2.1.1 Cooling Only 3MKS50E3V1B 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˚...

  • Page 288: Wiring Diagrams

    Wiring Diagrams SiBE121135_A 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 289 SiBE121135_A Wiring Diagrams 2.1.2 Heat Pump 3MXS40K2V1B, 3MXS40K3V1B, 3MXS52E3V1B, 3MXS52E4V1B, 3AMX52E3V1B, 3AMX52E4V1B MRM20 POWER SUPPLY 3.15A MRM10 6 ( P ) 7 ( N ) TO INDOOR UNIT X11A ROOM B 3.15A ROOM A PCB1 3 S15 ROOM C S101 SHEET METAL t˚...
  • Page 290 Wiring Diagrams SiBE121135_A 4MXS68F2V1B, 4MXS68F3V1B MRM20 POWER SUPPLY 3.15A V100 MRM10 6 ( P ) 7 ( N ) TO INDOOR UNIT X11A ROOM B 3.15A ROOM A MRC/W PCB1 3 S15 ROOM C S101 ROOM D t˚ t˚ t˚ t˚...
  • Page 291 SiBE121135_A Wiring Diagrams 5MXS90E2V3B, 5MXS90E3V3B 1N ~50Hz 230V WHT : WHITE YLW : YELLOW ORG : ORANGE RED : RED GRN : GREEN BLU : BLUE BRN : BROWN BLK : BLACK GRY : GREY TO INDOOR UNIT ROOM B ROOM A ROOM C ROOM D...

  • Page 292: Indoor Unit

    Wiring Diagrams SiBE121135_A Indoor Unit 2.2.1 Wall Mounted Type FTXG25/35/50JV1BW(A) : 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 : PRINTED CIRCUIT BOARD SENSOR / YLW...
  • Page 293 SiBE121135_A Wiring Diagrams FTXS35/42/50K2V1B, FTXS25/35/42/50J2V1B, ATXS20/25/35/42/50G2V1B PCB1 PCB3 LED1 OUTDOOR 3.15A C102 LED2 MR10 FIELD WIRING. LED3 C101 TRANSMISSION CAUTION CIRCUIT NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS TURNED OFF AND THEN BACK ON AGAIN. t˚...
  • Page 294 Wiring Diagrams SiBE121135_A 2.2.2 Floor Standing Type FVXG25/35/50K2V1B PCB1 PCB3 → RECTIFIER S2W(4) 3.15A outdoor MR10 GRN/YLW PCB2 C102 FIELD WIRING. SIGNAL RECEIVER TRANSMISSION CAUTION CIRCUIT NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS C101 TURNED OFF AND THEN BACK 1 RED ON AGAIN.
  • Page 295 SiBE121135_A Wiring Diagrams 2.2.3 Floor / Ceiling Suspended Dual Type FLXS25/35/50/60BAVMB PCB3 PCB1 PCB2 3.15A → outdoor FIELD WIRING. / YLW PCB4 TRANSMISSION CIRCUIT CAUTION NOTE THAT OPERATION WILL SIGNAL RESTART AUTOMATICALLY IF RECEIVER THE MAIN POWER SUPPLY IS indoor TURNED OFF AND THEN BACK ON AGAIN.
  • Page 296 Wiring Diagrams SiBE121135_A 2.2.5 Ceiling Mounted Cassette Type FCQG35/50/60FVEB INDOOR UNIT R2T R3T INPUT FROM 35~60 OUTSIDE ( NOTE 9 ) t˚ t˚ CLASS CENTRAL REMOTE H2P BS1 CONTROLLER (NOTE 2) +C105 TO OUTDOOR X18A X17A X15A UNIT ( NOTE 8 ) X24A NOTE)3 RECEIVER/DISPLAY UNIT...
  • Page 297 SiBE121135_A Wiring Diagrams FFQ25/35/50/60B9V1B : COLOR OF WIRE. : (MARKED) COLOR OF WIRE CONNECTOR. : COLOR OF PCB CONNECTOR. IN CASE OF SIMUL TANEOUS TO OUTDOOR OPERATION SYSTEM UNIT WIRED INDOOR UNIT INDOOR UNIT REMOTE (MASTER) (SLAVE) CONTROLLER SWITCH BOX (SEE NOTE 3) REMOTE CONTROLLER...
  • Page 298 Wiring Diagrams SiBE121135_A 2.2.6 Ceiling Suspended Type FHQ35/50/60BWV1B PUSH BUTTON SWITCH ( ON/OFF ) PRINTED CIRCUIT BOARD :CONNECTOR DISCRIMINATION COLOUR FOR COMPONENTS. CAPACITOR ( M1F ) PILOT LAMP IN CASE OF SIMULTANEOUS ( ON-RED ) FUSE ( F5A 250V ) :CONNECTOR COLOUR FOR COMPONENTS.
  • Page 299 SiBE121135_A Wiring Diagrams FBQ35/50C8VEB COLORS: : BLACK : BLUE : BROWN : GREY : ORANGE : PINK : RED : WHITE : YELLOW : GREEN TRANSMISSION WIRING 1N~220-240V 50Hz CENTRAL REMOTE 1N~220V 60Hz CONTROLLER NOTE 2 WIRED REMOTE CONTROLLER (OPTIONAL ACCESSORY) COMMON POWER SUPPLY NOTE 4...

  • Page 300: Removal Procedure (Booklet No.)

    Removal Procedure (Booklet No.) SiBE121135_A 3. Removal Procedure (Booklet No.) Refer to the following booklets for removal procedure. ∗3MKS50E3V1B, 4MKS58E3V1B, 4MKS75F2V1B, 3MXS40K2V1B, 3MXS52E3V1B, 3MXS68G2V1B, Refer to Si121174. 4MXS68F2V1B ∗3AMX52E3V1B Refer to SiBE121021_C. ∗5MKS90E2V3B, 4MXS80E2V3B, 5MXS90E2V3B Refer to Si121176. ∗3MXS40K3V1B, 3MXS52E4V1B, 3MXS68G3V1B, Refer to Si121291_A.
  • Page 301 Revision History Month / Year Version Revised contents 03 / 2012 SiBE121135 First edition Model addition: 3MXS40K3V1B, 3MXS52E4V1B, 3MXS68G3V1B, 4MXS68F3V1B, 4MXS80E3V3B, 5MXS90E3V3B, 01 / 2013 SiBE121135_A 3AMX52E3V1B, 3AMX52E4V1B, FTXS35/42/50K2V1B ATXS20/25/35/42/50G2V1B...
  • Page 302 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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