Daikin 2MXS40H2V1B Service Manual
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Daikin 2MXS40H2V1B Service Manual

Inverter multi for 2 rooms h-series / g-series
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See also: Installation Manual
SiBE121123_A
Service
Manual
Inverter Multi for 2 Rooms
H-Series / G-Series
[Applied Models]
Inverter Multi : Heat Pump

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Summary of Contents for Daikin 2MXS40H2V1B

  • Page 1 SiBE121123_A Service Manual Inverter Multi for 2 Rooms H-Series / G-Series [Applied Models] Inverter Multi : Heat Pump...
  • Page 2 SiBE121123_A Inverter Multi for 2 Rooms H-Series / G-Series Heat Pump Outdoor Unit Indoor Unit 2MXS40H2V1B FTXG25JV1BW(S)(A) FVXG25K2V1B 2MXS50H2V1B FTXG35JV1BW(S)(A) FVXG35K2V1B FTXG50JV1BW(S)(A) FVXG50K2V1B 2MXS40H3V1B CTXS15K2V1B FVXS25FV1B 2MXS50H3V1B CTXS35K2V1B FVXS35FV1B FTXS20K2V1B FVXS50FV1B FTXS25K2V1B FLXS25BAVMB FTXS35K2V1B FLXS35BAVMB FTXS42K2V1B FLXS50BAVMB FTXS50K2V1B FDXS25EAVMB FTXS20J2V1B...

  • Page 3: Table Of Contents

    SiBE121123_A 1. Introduction .................... vi 1.1 Safety Cautions ..................vi 1.2 Used Icons ....................x Part 1 List of Functions ..............1 1. Functions....................2 Part 2 Specifications ..............10 1. Indoor Unit.....................11 2. Outdoor Unit..................27 Part 3 Printed Circuit Board Connector Wiring Diagram ... 28 1.
  • Page 4 SiBE121123_A 1.16 Multi-Colored Indicator Lamp / TIMER Lamp .........73 1.17 Brightness Setting of Indoor Unit Display..........74 1.18 Clock Setting ..................75 1.19 WEEKLY TIMER Operation ..............76 1.20 Other Functions..................82 2. Function of SA Indoor Unit ..............83 2.1 Drain Pump Control................83 2.2 Thermostat Sensor in Remote Controller..........85 2.3 Freeze Prevention Control ..............87 2.4 Hot Start Control (In Heating Operation Only)........88 3.
  • Page 5 SiBE121123_A 3.1 RA Indoor Unit..................139 3.2 SA Indoor Unit ..................148 4. Code Indication on Remote Controller ..........155 4.1 RA Indoor Unit..................155 4.2 SA Indoor Unit ..................155 4.3 Outdoor Unit ..................156 5. Troubleshooting for RA Indoor Unit.............157 5.1 Indoor Unit PCB Abnormality ...............157 5.2 Freeze-up Protection Control or Heating Peak-cut Control....159 5.3 Fan Motor or Related Abnormality ............161 5.4 Radiant Panel Temperature Rise, Indoor Electronic Expansion Valve...
  • Page 6 SiBE121123_A 8.5 Power Supply Waveforms Check............209 8.6 Outdoor Electronic Expansion Valve Check.........210 8.7 Four Way Valve Performance Check ...........211 8.8 Inverter Unit Refrigerant System Check..........211 8.9 Inverter Analyzer Check ...............212 8.10 Rotating Pulse Input on the Outdoor Unit PCB Check ......214 8.11 Installation Condition Check..............215 8.12 Discharge Pressure Check..............215 8.13 Outdoor Unit Fan System Check............216...

  • Page 7: Introduction

    SiBE121123_A Introduction 1. Introduction Safety Cautions Cautions and Be sure to read the following safety cautions before conducting repair work. The caution items are classified into “ Warning” and “ Caution”. The “ Warning” Warnings items are especially important since they can lead to death or serious injury if they are not followed closely.
  • Page 8 Introduction SiBE121123_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 SiBE121123_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 SiBE121123_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

    SiBE121123_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

    SiBE121123_A Part 1 List of Functions 1. Functions....................2 List of Functions...

  • Page 13: Functions

    SiBE121123_A Functions 1. Functions Category Functions Category Functions Basic Inverter (with inverter power control) Health & Air-purifying filter — Function Clean Operation limit for cooling (°CDB) — Photocatalytic deodorizing filter — Air-purifying filter with photocatalytic Operation limit for heating (°CWB) —...
  • Page 14 Functions SiBE121123_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 — — — Operation limit for heating (°CWB) —...

  • Page 15: Function And Control Part

    SiBE121123_A Functions Category Functions Category Functions Basic Inverter (with inverter power control) Health & Air-purifying filter — — Function Clean Operation limit for cooling (°CDB) — — Photocatalytic deodorizing filter — — Air-purifying filter with photocatalytic Operation limit for heating (°CWB) —...
  • Page 16 Functions SiBE121123_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 17 SiBE121123_A Functions Category Functions Category Functions Basic Inverter (with inverter power control) Health & Air-purifying filter — — Function Clean Operation limit for cooling (°CDB) — — Photocatalytic deodorizing filter — — Air-purifying filter with photocatalytic Operation limit for heating (°CWB) —...
  • Page 18 Functions SiBE121123_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 SiBE121123_A Functions Category Functions Category Functions Basic Inverter (with inverter power control) Health & Air-purifying filter — Function Clean Operation limit for cooling (°CDB) — Photocatalytic deodorizing filter — Air-purifying filter with photocatalytic Operation limit for heating (°CWB) — — deodorizing function PAM control —...
  • Page 20 Functions SiBE121123_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 — — ~ 46 ~ 46 –15 –15 Air-purifying filter with photocatalytic Operation limit for heating (°CWB) —...

  • Page 21: Part 2 Specifications

    SiBE121123_A Part 2 Specifications 1. Indoor Unit.....................11 2. Outdoor Unit..................27 Specifications...

  • Page 22: Indoor Unit

    Indoor Unit SiBE121123_A 1. Indoor Unit Wall Mounted Type 50 Hz, 220 - 230 - 240 V FTXG25JV1BW FTXG25JV1BS Model Cooling Heating Cooling Heating Rated Capacity 2.5 kW Class 2.5 kW Class Front Panel Color White Brushed Aluminium Panel 8.8 (311) 9.6 (339) 8.8 (311) 9.6 (339)

  • Page 23: Specifications

    SiBE121123_A Indoor Unit 50 Hz, 220 - 230 - 240 V FTXG35JV1BW FTXG35JV1BS Model Cooling Heating Cooling Heating Rated Capacity 3.5 kW Class 3.5 kW Class Front Panel Color White Brushed Aluminium Panel 10.1 (357) 10.8 (381) 10.1 (357) 10.8 (381) 7.3 (258) 8.6 (304) 7.3 (258)
  • Page 24 Indoor Unit SiBE121123_A 50 Hz, 220 - 230 - 240 V FTXG50JV1BW FTXG50JV1BS 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 25 SiBE121123_A Indoor Unit 50 Hz, 220 - 230 - 240 V CTXS15K2V1B CTXS35K2V1B Model Cooling Heating Cooling Heating Rated Capacity 1.5 kW Class 3.5 kW Class Front Panel Color White White 7.9 (279) 9.0 (318) 9.2 (325) 10.1 (357) 6.3 (222) 7.5 (265) 7.2 (254) 8.1 (286)
  • Page 26 Indoor Unit SiBE121123_A 50 Hz, 220 - 230 - 240 V FTXS35K2V1B FTXS42K2V1B Model Cooling Heating Cooling Heating Rated Capacity 3.5 kW Class 4.2 kW Class Front Panel Color White White 11.2 (395) 12.1 (427) 11.2 (395) 12.4 (438) 8.5 (300) 9.3 (328) 9.1 (321) 10.0 (353)
  • Page 27 SiBE121123_A Indoor Unit 50 Hz, 220 - 230 - 240 V FTXS20J2V1B FTXS25J2V1B 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) 10.8 (381) 11.9 (420) 7.4 (261) 8.2 (290) 7.9 (279) 9.1 (321)
  • Page 28 Indoor Unit SiBE121123_A 50 Hz, 220 - 230 - 240 V FTXS50J2V1B Model Cooling Heating Rated Capacity 5.0 kW Class Front Panel Color White 11.6 (410) 12.1 (427) 9.2 (325) 9.8 (346) m³/min Airflow Rates (cfm) 7.0 (247) 7.6 (268) 6.0 (212) 6.7 (237) Type...
  • Page 29 SiBE121123_A Indoor Unit 50 Hz, 220 - 230 - 240 V ATXS35G2V1B ATXS42G2V1B Model Cooling Heating Cooling Heating Rated Capacity 3.5 kW Class 4.2 kW Class Front Panel Color White White 10.4 (367) 10.6 (374) 9.1 (321) 11.2 (395) 7.7 (270) 8.5 (302) 7.7 (273) 9.4 (333)
  • Page 30 Indoor Unit SiBE121123_A 50 Hz, 230 V FTX20JV1B FTX25JV1B Model Cooling Heating Cooling Heating Rated Capacity 2.0 kW Class 2.5 kW Class Front Panel Color White White 9.1 (321) 9.4 (331) 9.2 (325) 9.7 (342) 7.4 (261) 7.8 (276) 7.6 (268) 8.0 (283) m³/min Airflow Rates...
  • Page 31 SiBE121123_A Indoor Unit 50 Hz, 230 V ATX25JV1B ATX35JV1B Model Cooling Heating Cooling Heating Rated Capacity 2.5 kW Class 3.5 kW Class Front Panel Color White White 9.2 (325) 9.7 (342) 9.3 (328) 10.1 (356) 7.6 (268) 8.0 (283) 7.7 (272) 8.4 (295) m³/min Airflow Rates...
  • Page 32 Indoor Unit SiBE121123_A 50 Hz, 230 V FTX35J2V1B ATX20J2V1B Model Cooling Heating Cooling Heating Rated Capacity 3.5 kW Class 2.0 kW Class Front Panel Color White White 9.3 (328) 10.1 (356) 9.1 (321) 9.4 (331) 7.7 (272) 8.4 (295) 7.4 (261) 7.8 (276) m³/min Airflow Rates...

  • Page 33: Floor Standing Type

    SiBE121123_A Indoor Unit 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 34 Indoor Unit SiBE121123_A 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 35 SiBE121123_A Indoor Unit 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 36: Duct Connected Type

    Indoor Unit SiBE121123_A Duct Connected Type 50 Hz, 230 V FDXS25EAVMB, FDXS25E7VMB FDXS35EAVMB, 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 Rates...

  • Page 37: Ceiling Mounted Cassette Type

    SiBE121123_A Indoor Unit Ceiling Mounted Cassette Type 50 Hz, 230 V FFQ25B8V1B, FFQ25B9V1B FFQ35B8V1B, 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 ×...

  • Page 38: Outdoor Unit

    Outdoor Unit SiBE121123_A 2. Outdoor Unit 50 Hz, 220 - 240 V 2MXS40H2V1B, 2MXS40H3V1B 2MXS50H2V1B, 2MXS50H3V1B 2AMX40G2V1B, 2AMX40G3V1B 2AMX50G2V1B, 2AMX50G3V1B Model Cooling Heating Cooling Heating Casing Color Ivory White Ivory White Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type...

  • Page 39: Part 3 Printed Circuit Board Connector Wiring Diagram

    SiBE121123_A Part 3 Printed Circuit Board Connector Wiring Diagram 1. Indoor Unit.....................29 1.1 FTXG25/35/50JV1BW(S)(A) ..............29 1.2 CTXS15/35K2V1B, FTXS20/25K2V1B ..........31 1.3 FTXS35/42/50K2V1B, FTXS20/25/35/42/50J2V1B, ATXS20/25/35/42/50G2V1B ..............33 1.4 FTX20/25/35JV1B, FTX20/25/35J2V1B, ATX20/25/35JV1B, ATX20/25/35J2V1B................35 1.5 FVXG25/35/50K2V1B ................37 1.6 FVXS25/35/50FV1B ................39 1.7 FLXS25/35/50BAVMB................41 1.8 FDXS25/35EAVMB, FDXS25/35E7VMB, FDXS50CVMB, FDXS50C7VMB ..................43 1.9 FFQ25/35/50B8V1B, FFQ25/35/50B9V1B..........45 2.

  • Page 40: Indoor Unit

    Indoor Unit SiBE121123_A 1. Indoor Unit FTXG25/35/50JV1BW(S)(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 41 SiBE121123_A Indoor Unit Signal Receiver / Display PCB 1) S51 Connector for control PCB 2) S52 Connector for room temperature thermistor 3) S1W Forced operation [ON/OFF] button 4) H1P LED for operation (multi-color) 5) H2P LED for INTELLIGENT EYE (green) 6) JA Address setting jumper ∗...

  • Page 42: Ctxs15/35K2V1B, Ftxs20/25K2V1B

    Indoor Unit SiBE121123_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 43 SiBE121123_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 44: Ftxs35/42/50K2V1B, Ftxs20/25/35/42/50J2V1B, Atxs20/25/35/42/50G2V1B

    Indoor Unit SiBE121123_A FTXS35/42/50K2V1B, FTXS20/25/35/42/50J2V1B, 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 45 SiBE121123_A Indoor Unit Signal Receiver 1) S48 Connector for control PCB 3P210728-1 Display PCB 1) S49 Connector for control PCB 2) SW1 Forced 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 46: Ftx20/25/35Jv1B, Ftx20/25/35J2V1B, Atx20/25/35Jv1B, Atx20/25/35J2V1B

    Indoor Unit SiBE121123_A FTX20/25/35JV1B, FTX20/25/35J2V1B, ATX20/25/35JV1B, ATX20/25/35J2V1B Control PCB 1) S6 Connector for swing motor (horizontal blade) 2) S26 Connector for display PCB 3) S32 Connector for indoor heat exchanger thermistor 4) S200 Connector for fan motor 5) S403 Connector for adaptor PCB (option) 6) H1, H2, H3, Connector for terminal board 7) V1...
  • Page 47 SiBE121123_A Indoor Unit Display PCB 1) S27 Connector for control PCB 2) SW1 (S1W) Forced operation [ON/OFF] button 3) LED1 (H1P) LED for operation (green) 4) LED2 (H2P) LED for timer (yellow) 5) RTH1 (R1T) Room temperature thermistor LED2 LED1 (Solder side) RTH1 3P206563-1...

  • Page 48: Fvxg25/35/50K2V1B

    Indoor Unit SiBE121123_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 49 SiBE121123_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 50: Fvxs25/35/50Fv1B

    Indoor Unit SiBE121123_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 51 SiBE121123_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 230 for detail. ∗...

  • Page 52: Flxs25/35/50Bavmb

    Indoor Unit SiBE121123_A FLXS25/35/50BAVMB 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 53 SiBE121123_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 54: Fdxs25/35Eavmb, Fdxs25/35E7Vmb, Fdxs50Cvmb, Fdxs50C7Vmb

    Indoor Unit SiBE121123_A FDXS25/35EAVMB, FDXS25/35E7VMB, FDXS50CVMB, FDXS50C7VMB 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...
  • Page 55 SiBE121123_A Indoor Unit Display PCB 1) S1 Connector for control PCB 2) SW1 (S1W) Forced 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 56: Ffq25/35/50B8V1B, Ffq25/35/50B9V1B

    Indoor Unit SiBE121123_A FFQ25/35/50B8V1B, FFQ25/35/50B9V1B 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 57: Wired Remote Controller

    SiBE121123_A Wired Remote Controller 2. Wired Remote Controller BRC1D528 PCB Detail 1) P1, P2 Terminal for indoor unit 2) R1T Room temperature thermistor 3) SS1 MAIN / SUB setting switch ∗ Refer to page 235 for detail. 2P113638-2 Printed Circuit Board Connector Wiring Diagram...

  • Page 58: Brc1E51A7

    Wired Remote Controller SiBE121123_A BRC1E51A7 PCB Detail 1) P1, P2 Terminal for indoor unit 2) R1T Room temperature thermistor 2P243326-1 Printed Circuit Board Connector Wiring Diagram...

  • Page 59: Wireless Remote Controller

    SiBE121123_A Wireless Remote Controller 3. Wireless Remote Controller BRC7E530W Signal Receiver 1) X1A Connector for display PCB 2) X2A Connector for control PCB 3) SS1 MAIN / SUB setting switch Address setting switch ∗ Refer to page 236 for detail. 3P156326-2 Display PCB 1) X1A...

  • Page 60: Outdoor Unit

    Outdoor Unit SiBE121123_A 4. Outdoor Unit PCB Detail 1) S20 Connector for outdoor electronic expansion valve coil A port 2) S21 Connector for outdoor electronic expansion valve coil B port 3) S40 Connector for overload protector 4) S45 Connector for terminal board (thermal fuse) 5) S70 Connector for fan motor 6) S80...
  • Page 61 SiBE121123_A Outdoor Unit 40 class HL1 E LED A U, V, W 2P190760-2 2P190760-3 50 class LED A S20 S91 S92 U, V, W 2P197402-1 2P197402-3 Printed Circuit Board Connector Wiring Diagram...

  • Page 62: Part 4 Function And Control

    SiBE121123_A Part 4 Function and Control 1. Function of RA Indoor Unit..............52 1.1 Temperature Control ................52 1.2 Frequency Principle................52 1.3 Operation Starting Control..............54 1.4 Airflow Direction Control.................55 1.5 Fan Speed Control for Indoor Unit ............58 1.6 RADIANT Operation................60 1.7 Program Dry Operation ................62 1.8 Automatic Operation................63 1.9 Thermostat Control.................64 1.10 NIGHT SET Mode ..................65...

  • Page 63: Function Of Ra Indoor Unit

    SiBE121123_A Function of RA Indoor Unit 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 64 Function of RA Indoor Unit SiBE121123_A 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 65: Operation Starting Control

    SiBE121123_A Function of RA Indoor Unit 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 66: Airflow Direction Control

    Function of RA Indoor Unit SiBE121123_A Airflow Direction Control Power-Airflow The large flap sends a large volume of air downward to the floor and provides an optimum control in cooling, dry, and heating operation. Dual Flaps <Cooling / Dry> During cooling or dry operation, the flap retracts into the indoor unit. Then, cool air can be blown far and distributed all over the room.
  • Page 67 SiBE121123_A Function of RA Indoor Unit Floor Standing Type: FVXS Series Vertical Swing (up and down) Cooling / Dry Heating Upward airflow limit (R6831) (R6829) Upward airflow limit (R6832) (R6830) Floor / Ceiling Suspended Dual Type Vertical Swing (up and down) Cooling / Dry / Fan Heating Ceiling...
  • Page 68 Function of RA Indoor Unit SiBE121123_A COMFORT Wall Mounted Type The vertical swing flap is controlled not to blow the air directly on the person in the room. AIRFLOW Operation Cooling / Dry Heating (R18417) (R18418) FTXG 5° 75° CTXS FTXS20/25K 0°...

  • Page 69: Fan Speed Control For Indoor Unit

    SiBE121123_A Function of RA Indoor Unit When setting the airflow selection switch to The air conditioner automatically decides the appropriate blowing pattern depending on the operating mode / situation. Operating mode Situation Blowing pattern • When the room has become fully •...
  • Page 70 Function of RA Indoor Unit SiBE121123_A <Cooling> The following drawing explains the principle of fan speed control for cooling. Wall Mounted Type, Floor Standing Type Room thermistor temperature – target temperature Fan speed +3°C +2.5°C +2°C +1.5°C +1°C +0.5°C (R12317) *The upper limit is M tap in 30 minutes from the operation start.

  • Page 71: Radiant Operation

    SiBE121123_A Function of RA Indoor Unit 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 72 Function of RA Indoor Unit SiBE121123_A 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 73: Program Dry Operation

    SiBE121123_A Function of RA Indoor Unit 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] adjustment buttons are inoperable. Detail The microcomputer automatically sets the temperature and airflow rate.

  • Page 74: Automatic Operation

    Function of RA Indoor Unit SiBE121123_A 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 75: Thermostat Control

    SiBE121123_A Function of RA Indoor Unit 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 76: Night Set Mode

    Function of RA Indoor Unit SiBE121123_A 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 77: Econo Operation

    SiBE121123_A Function of RA Indoor Unit 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 78: Home Leave Operation

    Function of RA Indoor Unit SiBE121123_A 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 79 SiBE121123_A Function of RA Indoor Unit 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 80: 2-Area Intelligent Eye Operation

    Function of RA Indoor Unit SiBE121123_A 1.13 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 81 SiBE121123_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 82: Intelligent Eye Operation

    Function of RA Indoor Unit SiBE121123_A 1.14 INTELLIGENT EYE Operation Outline Wall Mounted Type: FTXG, CTXS, FTXS20/25K, ATXS Series This is the function that detects existence of humans in the room by a human motion sensor (INTELLIGENT EYE) and reduces the capacity when there is nobody in the room in order to save electricity.

  • Page 83: Inverter Powerful Operation

    SiBE121123_A Function of RA Indoor Unit 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 [POWERFUL] button is pressed, the fan speed and target temperature are converted to the following states for 20 minutes.

  • Page 84: Multi-Colored Indicator Lamp / Timer Lamp

    Function of RA Indoor Unit SiBE121123_A 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 85: Brightness Setting Of Indoor Unit Display

    SiBE121123_A Function of RA Indoor Unit 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 Indoor Unit Display...

  • Page 86: Clock Setting

    Function of RA Indoor Unit SiBE121123_A 1.18 Clock Setting ARC466 Series The clock can be set by taking the following steps: 1. Press the [CLOCK] button. ARC452 Series → is displayed and MON and blink. 2. Press the [SELECT] button to set the clock to the current day of the week. 3.

  • Page 87: Weekly Timer Operation

    SiBE121123_A Function of RA Indoor Unit 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 88 Function of RA Indoor Unit SiBE121123_A 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 27˚C [Monday]...
  • Page 89 SiBE121123_A Function of RA Indoor Unit 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 90 Function of RA Indoor Unit SiBE121123_A 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 91 SiBE121123_A Function of RA Indoor Unit 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 92 Function of RA Indoor Unit SiBE121123_A 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 93: Other Functions

    SiBE121123_A Function of RA Indoor Unit 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 either the airflow is stopped or is made very weak thereby carrying out comfortable heating of the room.

  • Page 94: Function Of Sa Indoor Unit

    Function of SA Indoor Unit SiBE121123_A 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 95: Remote Controller

    SiBE121123_A Function of SA Indoor Unit 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 96: Thermostat Sensor In Remote Controller

    Function of SA Indoor Unit SiBE121123_A Thermostat Sensor in Remote Controller Outline Temperature is controlled by both the thermostat sensor in remote controller and air suction thermostat in the indoor unit. (This is however limited to when the field setting for the thermostat sensor in remote controller is set to “Use”.) Cooling If there is a significant difference in the set temperature and the suction temperature, fine...
  • Page 97 SiBE121123_A Function of SA Indoor Unit 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 98: Freeze Prevention Control

    Function of SA Indoor Unit SiBE121123_A 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 99: Hot Start Control (In Heating Operation Only)

    SiBE121123_A Function of SA Indoor Unit 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 100: Function Of Thermistor

    Function of Thermistor SiBE121123_A 3. Function of Thermistor Outdoor electronic In case of FVXG model expansion valve Indoor electronic expansion valve (6) φ 4 (Motor operated valve) Radiant panel (6) φ 6 Four way valve (R15406) Compressor (1) Outdoor Heat 1.
  • Page 101 SiBE121123_A Function of Thermistor (4) Indoor Heat 1. The indoor heat exchanger thermistor is used for controlling target discharge pipe temperature. The system sets the target discharge pipe temperature according to the Exchanger outdoor and indoor heat exchanger temperature, and controls the outdoor electronic Thermistor expansion valve opening so that the target discharge pipe temperature can be obtained.

  • Page 102: Control Specification

    Control Specification SiBE121123_A 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 Air conditioner control mode Forced operation mode Forced cooling operation (for pump down operation) Power transistor test mode Normal operation mode Cooling (includes drying)

  • Page 103: Frequency Control

    SiBE121123_A Control Specification Frequency Control Outline Frequency that corresponds to each room’s capacity is determined according to the difference between the target temperature and the temperature of each room. The function is explained as follows. 1. How to determine frequency 2.
  • Page 104 Control Specification SiBE121123_A Indoor Frequency Command (∆D signal) The difference between a room thermistor temperature and the target temperature is taken as the “∆D signal” and is used for frequency command. ∆D ∆D ∆D ∆D Temperature Temperature Temperature Temperature difference (°C) signal difference (°C) signal...

  • Page 105: Controls At Mode Changing / Start-Up

    SiBE121123_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 and the discharge pipe temperature. Detail ON Condition When outdoor temperature is below 10.5°C and discharge pipe temperature is below 10.5°C, the inverter operation in open phase starts.

  • Page 106: Discharge Pipe Temperature Control

    Control Specification SiBE121123_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 class 50 class A (Hz) B (Hz) C (Hz)

  • Page 107: Input Current Control

    SiBE121123_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 model, 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 108: Heating Peak-Cut Control

    Control Specification SiBE121123_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 109: Outdoor Fan Control

    SiBE121123_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 110: Defrost Control

    Control Specification SiBE121123_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 is determined with the outdoor temperature and the outdoor heat exchanger temperature.

  • Page 111: Outdoor Electronic Expansion Valve Control

    SiBE121123_A Control Specification 4.11 Outdoor Electronic Expansion Valve Control Outline The following items are included in the outdoor electronic expansion valve control. Outdoor electronic expansion valve is fully closed 1. Outdoor electronic expansion valve is fully closed when turning on the power. 2.
  • Page 112 Control Specification SiBE121123_A Detail The followings are the examples of control which function in each operation mode by the outdoor electronic expansion valve control. Operation pattern : Holding Functions × : No Functions When power is turned on × × ×...
  • Page 113 SiBE121123_A Control Specification 4.11.1 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. 4.11.2 Pressure Equalization Control When the compressor is stopped, the pressure equalization control is activated. The outdoor electronic expansion valve opens, and develops the pressure equalization.
  • Page 114 Control Specification SiBE121123_A 4.11.8 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 115: Malfunctions

    SiBE121123_A Control Specification 4.11.11Target 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 aiming SH.
  • Page 116 Control Specification SiBE121123_A 4.12.3 Refrigerant Shortage Control Outline I: Detecting by power consumption If the power consumption is below the specified value and the frequency is higher than the specified frequency, it is regarded as refrigerant shortage. The power consumption is low comparing with that in the normal operation when refrigerant is insufficient, and refrigerant shortage is detected by checking power consumption.

  • Page 117: Part 5 Remote Controller

    SiBE121123_A Part 5 Remote Controller 1. RA Indoor Unit..................107 1.1 FTXG25/35/50JV1BW(S)(A), CTXS15/35K2V1B, FTXS20/25K2V1B ................107 1.2 FTXS35/42/50K2V1B ................109 1.3 FTXS20/25/35/42/50J2V1B..............111 1.4 ATXS20/25/35/42/50G2V1B ..............113 1.5 FTX20/25/35JV1B, FTX20/25/35J2V1B, ATX20/25/35JV1B, ATX20/25/35J2V1B................115 1.6 FVXG25/35/50K2V1B ................117 1.7 FVXS25/35/50FV1B ................119 1.8 FLXS25/35/50BAVMB................121 1.9 FDXS25/35EAVMB, FDXS25/35E7VMB, FDXS50CVMB, FDXS50C7VMB ...................123 2.

  • Page 118: Ra Indoor Unit

    Refer to the following pages for detail. 1 POWERFUL operation P.72 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 119: Mode Button

    4 Auto swing setting P.55 7 Clock setting P.75 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 120: Ftxs35/42/50K2V1B

    Refer to the following pages for detail. 1 POWERFUL operation P.72 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 121 4 2-area INTELLIGENT EYE P.69 operation 8 Clock setting P.75 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 122: Ftxs20/25/35/42/50J2V1B

    Refer to the following pages for detail. 1 POWERFUL operation P.72 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 123 4 ECONO operation P.66 7 Clock setting P.75 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 124: Atxs20/25/35/42/50G2V1B

    Refer to the following pages for detail. 1 ECONO operation P.66 2 POWERFUL operation P.72 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 125 4 COMFORT AIRFLOW P.57, 59 6 Clock setting P.75 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 126: Ftx20/25/35Jv1B, Ftx20/25/35J2V1B, Atx20/25/35Jv1B, Atx20/25/35J2V1B

    Refer to the following pages for detail. 1 ECONO operation P.66 2 POWERFUL operation P.72 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 127 5 Clock setting P.75 4 COMFORT AIRFLOW P.57, 59 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 128: Fvxg25/35/50K2V1B

    Refer to the following pages for detail. 1 RADIANT operation P.60 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 129 4 Auto swing setting P.55 7 Clock setting P.75 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 130: Fvxs25/35/50Fv1B

    Refer to the following pages for detail. 1 POWERFUL operation P.72 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 131 3 Auto swing setting P.55 5 Clock setting P.75 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 132: Flxs25/35/50Bavmb

    1 HOME LEAVE operation P.67 2 POWERFUL operation P.72 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 133 3 Auto swing setting P.55 4 Clock setting P.75 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 134: Fdxs25/35Eavmb, Fdxs25/35E7Vmb, Fdxs50Cvmb, Fdxs50C7Vmb

    1 HOME LEAVE operation P.67 2 POWERFUL operation P.72 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 135 Refer to the following pages for detail. 3 Clock setting P.75 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 136: Sa Indoor Unit

    SA Indoor Unit SiBE121123_A 2. SA Indoor Unit BRC1D528 23 7 Remote Controller...
  • Page 137 SiBE121123_A SA Indoor Unit SCHEDULE TIMER ICON ON/OFF BUTTON 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 138 SA Indoor Unit SiBE121123_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 139: Brc1E51A7

    SiBE121123_A SA Indoor Unit BRC1E51A7 1. Operation mode selector button 11. LCD (with backlight) 4. Up button 5. Down button 6. Right button 7. Left button 9. Operation lamp 8. On/Off button 3. Menu/Enter button 10. Cancel button 2. Fan speed control button Remote Controller...
  • Page 140 SA Indoor Unit SiBE121123_A 1. Operation mode selector button 7. Left button (Be sure to press the part with the symbol ) • Press this button to select the operation mode of your preference. • Used to highlight the next items on the * Available modes vary with the connecting left-hand side.
  • Page 141 SiBE121123_A SA Indoor Unit Liquid Crystal Display • Two types of liquid crystal display (LCD) are available. The standard display is by default set. • To go to the detailed display, select the detailed display in the main menu. • The displayed contents of the screen vary with the operation mode of the equipment interlocked.

  • Page 142: Operation Mode

    SA Indoor Unit SiBE121123_A “Error: Press Menu Button.” 1. Operation mode “Warning: Press Menu Button.” • Used to display the present operation • Displayed if the error or warning is detected. mode Cool, Heat, Vent, Fan, Dry or Auto mode. “Quick Cool/Heat”...
  • Page 143 SiBE121123_A SA Indoor Unit 12. Home leave “ ” • The home leave icon shows the status of the home leave function. Home leave is enabled Home Leave is active FLASHING Home Leave is disabled 13. Airflow direction “ ” •...

  • Page 144: Brc7E530W

    SA Indoor Unit SiBE121123_A BRC7E530W ON OFF DOWN ON OFF TEMP TIME DOWN RESERVE CANCEL TIMER TEST MODE SWING TEST TEST (R17880) (R17873) PROGRAMMING TIMER BUTTON DISPLAY “ ” (SIGNAL TRANSMISSION) Use this button for programming “START This lights up when a signal is being and/or STOP”...

  • Page 145: Part 6 Service Diagnosis

    SiBE121123_A Part 6 Service Diagnosis 1. Troubleshooting with LED ..............136 1.1 Indoor Unit....................136 1.2 Outdoor Unit ..................137 2. Problem Symptoms and Measures .............138 3. Service Check Function ..............139 3.1 RA Indoor Unit..................139 3.2 SA Indoor Unit ..................148 4. Code Indication on Remote Controller ..........155 4.1 RA Indoor Unit..................155 4.2 SA Indoor Unit ..................155 4.3 Outdoor Unit ..................156...
  • Page 146 SiBE121123_A 7.10 Discharge Pipe Temperature Control...........193 7.11 High Pressure Control in Cooling ............194 7.12 Compressor Sensor System Abnormality ..........195 7.13 Position Sensor Abnormality ..............196 7.14 DC Voltage / Current Sensor Abnormality..........198 7.15 Thermistor or Related Abnormality (Outdoor Unit).......199 7.16 Electrical Box Temperature Rise............201 7.17 Radiation Fin Temperature Rise ............202 7.18 Output Overcurrent Detection ..............204 8.

  • Page 147: Troubleshooting With Led

    SiBE121123_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 148: Outdoor Unit

    Troubleshooting with LED SiBE121123_A Floor Standing Type: FVXG Series Floor / Ceiling Suspended Dual Type Operation lamp (green) (R11688) Operation lamp (green) (R14646) Duct Connected Type Operation lamp (green) (Q0340) BRC1D528 BRC1E51A7 Operation lamp (red) Operation lamp (green) (R12851) The error or warning message also blinks on the basic screen.

  • Page 149: Problem Symptoms And Measures

    SiBE121123_A Problem Symptoms and Measures 2. Problem Symptoms and Measures Problem Symptom Check Item Details of Measure Reference Page None of the units operates. Check the power supply. Check if the rated voltage is supplied. — Check the types of the indoor units. Check if the indoor unit type is compatible with —...

  • Page 150: Service Check Function

    Service Check Function SiBE121123_A 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 151 SiBE121123_A Service Check Function Check Method 2 1. Press the center of the [Temp] button and the [Mode] button at the same time. (R11669) is displayed on the LCD. (R11821) 2. Select 5C (service check) with the [Temp] button. 3. Press the [Mode] button to enter the service check mode. (R11672) The left-side number blinks.
  • Page 152 Service Check Function SiBE121123_A 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 153: Arc452 Series Remote Controller

    SiBE121123_A Service Check Function 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 154 Service Check Function SiBE121123_A 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 155 SiBE121123_A Service Check Function 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 156: Arc433 Series Remote Controller

    Service Check Function SiBE121123_A 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 < ARC433 Series > (R14555) 2.
  • Page 157 SiBE121123_A Service Check Function 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 158 Service Check Function SiBE121123_A 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 159: Sa Indoor Unit

    SiBE121123_A Service Check Function SA Indoor Unit 3.2.1 Relations between Modes BRC1D528, BRC7E530W 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 160 Service Check Function SiBE121123_A BRC1E51A7 <Main Menu> • Set temp. mode changeover • Airflow direction • Quick Cool/Heat On/Off • Ventilation • Timer setting • Service Contact/Model Info • Convenient functions • Setting status list • Clock setting Main Menu screen •...
  • Page 161 SiBE121123_A Service Check Function 3.2.2 BRC1D528 If operation stops due to malfunction, the operation lamp on the remote controller blinks, and error code is displayed. (Even if stop operation is carried out, malfunction contents are displayed when inspection mode is entered.) The error code enables you to tell what kind of malfunction caused operation to stop.
  • Page 162 Service Check Function SiBE121123_A 3.2.3 BRC1E51A7 The following display appears on the screen when a error (or a warning) occurs during operation. Check the error code and take the corrective action specified for the particular model. Screen Operation lamp [Menu/Enter] button (R15409) (1) Check if it is error or warning.
  • Page 163 SiBE121123_A Service Check Function 3.2.4 BRC7E530W To find the error code, proceed as follows: Step Action Press the [Inspection / Test] button to enter the inspection mode. Then the figure 0 blinks on the UNIT No. display. [Inspection / Test] button (R14392) Press the [UP] or [DOWN] button and change the UNIT No.
  • Page 164 Service Check Function SiBE121123_A Step Action Press the [MODE] button. The left 0 (upper digit) indication of the error code blinks. [MODE] button (R15410) Press the [UP] or [DOWN] button to change the error code upper digit until the receiver of the remote controller starts to beep.
  • Page 165 SiBE121123_A Service Check Function Step Action Press the [MODE] button. The right 0 (lower digit) indication of the error code blinks. [MODE] button (R15412) Press the [UP] or [DOWN] button and change the error code lower digit until the receiver of the remote controller generates a continuous beep.

  • Page 166: Code Indication On Remote Controller

    Code Indication on Remote Controller SiBE121123_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 167: Outdoor Unit

    SiBE121123_A Code Indication on Remote Controller Outdoor Unit Reference Error Codes Description Page System Normal — Refrigerant shortage Low-voltage detection or over-voltage detection Outdoor unit PCB abnormality or signal transmission error Unspecified voltage (between indoor unit and outdoor unit) Anti-icing control in other room Outdoor Anti-icing control for indoor unit Unit...

  • Page 168: Troubleshooting For Ra Indoor Unit

    Troubleshooting for RA Indoor Unit SiBE121123_A 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 169 SiBE121123_A Troubleshooting for RA Indoor Unit Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check 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 170: Freeze-Up Protection Control Or Heating Peak-Cut Control

    Troubleshooting for RA Indoor Unit SiBE121123_A 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 171 SiBE121123_A Troubleshooting for RA Indoor Unit Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.01 Check the air passage. Refer to P.206 Is there any short circuit? Provide sufficient air passage.

  • Page 172: Fan Motor Or Related Abnormality

    Troubleshooting for RA Indoor Unit SiBE121123_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 abnormal fan motor operation.
  • Page 173 SiBE121123_A Troubleshooting for RA Indoor Unit Troubleshooting FTXG, FTXS35/42/50K, FTXS-J, 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 Turn off the power supply Refer to P.207 and rotate the fan by hand.
  • Page 174 Troubleshooting for RA Indoor Unit SiBE121123_A Troubleshooting CTXS, FTXS20/25K, FTX, ATX 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.
  • Page 175 SiBE121123_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 176: Radiant Panel Temperature Rise, Indoor Electronic Expansion Valve (Motor Operated Valve) Abnormality, Freeze-Up Protection Control (Fvxg Series Only)

    Troubleshooting for RA Indoor Unit SiBE121123_A 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 177 SiBE121123_A Troubleshooting for RA Indoor Unit Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.01 ∗ When the outdoor temperature is below the Check the operation condition. lower limit for cooling operation (10˚C), the Refer to P.206 freeze-up protection control is activated and the...

  • Page 178: Thermistor Or Related Abnormality (Ra Indoor Unit)

    Troubleshooting for RA Indoor Unit SiBE121123_A Thermistor or Related Abnormality (RA Indoor Unit) C4 , C9 , CE 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 179: Front Panel Open / Close Fault (Ftxg Series Only)

    SiBE121123_A Troubleshooting for RA Indoor Unit 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 Malfunction or deterioration of the front panel mechanism Causes Defective limit switch Troubleshooting...

  • Page 180: Troubleshooting For Sa Indoor Unit

    Troubleshooting for SA Indoor Unit SiBE121123_A 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 When data could not be correctly received from the EEPROM Conditions EEPROM : Type of nonvolatile memory.

  • Page 181: Drain Level Control System Abnormality

    SiBE121123_A Troubleshooting for SA Indoor Unit 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 Improper drain piping work...

  • Page 182: Fan Motor (Ac Motor) Or Related Abnormality

    Troubleshooting for SA Indoor Unit SiBE121123_A Fan Motor (AC Motor) or Related Abnormality 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 183: Drain System Abnormality

    SiBE121123_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 184: Thermistor Or Related Abnormality (Sa Indoor Unit)

    Troubleshooting for SA Indoor Unit SiBE121123_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 185: Remote Controller Thermistor Abnormality

    SiBE121123_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 186: Signal Transmission Error (Between Indoor Unit And Remote Controller)

    Troubleshooting for SA Indoor Unit SiBE121123_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 transmission between indoor unit and remote controller (main and sub) is normal. Detection Error Decision Normal transmission does not continue for specified period.

  • Page 187: Signal Transmission Error (Between Main Remote Controller And Sub Remote Controller)

    SiBE121123_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 transmission between indoor unit and remote controller (main and sub) is normal. Detection Error Decision Normal transmission does not continue for specified period.

  • Page 188: Field Setting Abnormality

    Troubleshooting for SA Indoor Unit SiBE121123_A 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 189: Troubleshooting For Outdoor Unit

    SiBE121123_A Troubleshooting for Outdoor Unit 7. Troubleshooting for Outdoor Unit Refrigerant Shortage Error Code Method of Error Refrigerant shortage detection I : Refrigerant shortage is detected by checking the input current value and the compressor output Detection frequency. If the refrigerant is short, the input current is lower than the normal value. Refrigerant shortage detection II : Refrigerant shortage is detected by checking the discharge pipe temperature and the opening of the outdoor electronic expansion valve.
  • Page 190 Troubleshooting for Outdoor Unit SiBE121123_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.206 Any thermistor Replace the thermistor(s) disconnected? ∗ Discharge pipe thermistor position.

  • Page 191: Low-Voltage Detection Or Over-Voltage Detection

    SiBE121123_A Troubleshooting for Outdoor Unit Low-voltage Detection or Over-voltage Detection Error Code Method of Error Indoor Unit Detection Evaluation of zero-cross detection of power supply by the indoor unit PCB. Outdoor Unit Low-voltage detection: An abnormal voltage drop is detected by the DC voltage detection circuit. Over-voltage detection: An abnormal voltage rise is detected by the over-voltage detection circuit.
  • Page 192 Troubleshooting for Outdoor Unit SiBE121123_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 193: Outdoor Unit Pcb Abnormality Or Signal Transmission Error

    SiBE121123_A Troubleshooting for Outdoor Unit Outdoor Unit PCB Abnormality or Signal Transmission Error Error Code Method of Error Detection within the program of the microcomputer that the program is in good running order. Detection Error Decision The program of the microcomputer does not work in order. Conditions Signal transmission between the units cannot be performed for more than 15 seconds.
  • Page 194 Troubleshooting for Outdoor Unit SiBE121123_A Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check indoor unit also, because a communication circuit fault may be caused by the problem related to the indoor unit. Check the power supply voltage.
  • Page 195 SiBE121123_A Troubleshooting for Outdoor Unit Continued from the previous page Check No.11 Refer to P.209 Does the LED A turn off? Check grounding. Grounded? Carry out grounding work. The cause seems to be an external factor other than the outdoor unit PCB. Investigate source of noise Rotate the and take measures.

  • Page 196: Unspecified Voltage (Between Indoor Unit And Outdoor Unit) / Anti-Icing Control In Other Room

    Troubleshooting for Outdoor Unit SiBE121123_A Unspecified Voltage (between Indoor Unit and Outdoor Unit) / Anti-icing Control in Other Room UA , UH Error Code Method of Error A wrong connection is detected by checking the combination of indoor and outdoor units on the microcomputer.

  • Page 197: Anti-Icing Control For Indoor Unit

    SiBE121123_A Troubleshooting for Outdoor Unit Anti-icing Control for Indoor Unit Error Code 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 198 Troubleshooting for Outdoor Unit SiBE121123_A Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.01 Check the wiring and piping. Refer to P.206 Wrong wiring or Activate the wiring error check Check No.12 piping? function.

  • Page 199: Ol Activation (Compressor Overload)

    SiBE121123_A Troubleshooting for Outdoor Unit OL Activation (Compressor Overload) Error Code Method of Error A compressor overload is detected through compressor OL. Detection Error Decision If the error repeats, the system is shut down. Reset condition: Continuous run for about 60 minutes without any other error Conditions Supposed Disconnection of discharge pipe thermistor...
  • Page 200 Troubleshooting for Outdoor Unit SiBE121123_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.206 Discharge pipe thermistor Insert the thermistor in disconnected? position. Check No.12 Refer to P.210 Check No.

  • Page 201: Compressor Lock

    SiBE121123_A Troubleshooting for Outdoor Unit Compressor Lock Error Code Method of Error A compressor lock is detected by checking the compressor running condition through the position detection circuit. Detection Error Decision Judging from the current waveform generated when high-frequency voltage is applied to the compressor.

  • Page 202: Dc Fan Lock

    Troubleshooting for Outdoor Unit SiBE121123_A DC Fan Lock Error Code 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 60 seconds even when the fan motor is running. If the error repeats, the system is shut down.

  • Page 203: Input Overcurrent Detection

    SiBE121123_A Troubleshooting for Outdoor Unit Input Overcurrent Detection Error Code 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. The compressor halts if the error occurs, and restarts automatically after 3-minute standby. Conditions Supposed Outdoor temperature is out of operation range.

  • Page 204: Discharge Pipe Temperature Control

    Troubleshooting for Outdoor Unit SiBE121123_A 7.10 Discharge Pipe Temperature Control Error Code Method of Error Detected by the discharge pipe thermistor Detection Error Decision If the temperature detected by the discharge pipe thermistor rises above A °C, the compressor stops. Conditions The error is cleared when the discharge pipe temperature is dropped below B °C.

  • Page 205: High Pressure Control In Cooling

    SiBE121123_A Troubleshooting for Outdoor Unit 7.11 High Pressure Control in Cooling Error Code Method of Error High-pressure control (operation halt, frequency drop, etc.) is activated in cooling operation if the temperature sensed by the outdoor heat exchanger thermistor exceeds the limit. Detection Error Decision The temperature sensed by the outdoor heat exchanger thermistor rises above about...

  • Page 206: Compressor Sensor System Abnormality

    Troubleshooting for Outdoor Unit SiBE121123_A 7.12 Compressor Sensor System Abnormality Error Code Method of Error Fault condition is identified by DC current which is detected before compressor startup. Detection Error Decision When the DC current before compressor startup is other than 0.5 to 4.5 V (detected by converting the sensor output to voltage), or the DC voltage is 50 V or less.

  • Page 207: Position Sensor Abnormality

    SiBE121123_A Troubleshooting for Outdoor Unit 7.13 Position Sensor Abnormality Error Code Method of Error A compressor startup failure is detected by checking the compressor running condition through the position detection circuit. Detection Error Decision If the error repeats, the system is shut down. Reset condition: Continuous run for about 11 minutes without any other error Conditions Supposed...
  • Page 208 Troubleshooting for Outdoor Unit SiBE121123_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.212 Turn off the power. Check No.18 Check the power supply voltage. Refer to P.215 Voltage as rated? Correct the power supply.

  • Page 209: Dc Voltage / Current Sensor Abnormality

    SiBE121123_A Troubleshooting for Outdoor Unit 7.14 DC Voltage / Current Sensor Abnormality Error Code Method of Error DC voltage or DC current sensor abnormality is identified based on the compressor running frequency and the input current. Detection Error Decision The compressor running frequency is above 52 Hz. If the error repeats, the system is shut down.

  • Page 210: Thermistor Or Related Abnormality (Outdoor Unit)

    Troubleshooting for Outdoor Unit SiBE121123_A 7.15 Thermistor or Related Abnormality (Outdoor Unit) H9 , J3 , J6 , J8 , J9 , P4 Error Code Method of Error This type of error is detected by checking the thermistor input voltage to the microcomputer. A thermistor error is detected by checking the temperature sensed by each thermistor.
  • Page 211 SiBE121123_A Troubleshooting for Outdoor Unit In case of “ H9 ” “ J3 ” “ J6 ” “ J8 ” “ J9 ” Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.01 Refer to P.206 Turn on the power again.

  • Page 212: Electrical Box Temperature Rise

    Troubleshooting for Outdoor Unit SiBE121123_A 7.16 Electrical Box Temperature Rise Error Code Method of Error An electrical box temperature rise is detected by checking the radiation fin thermistor with the compressor off. Detection Error Decision With the compressor off, the radiation fin temperature is above A °C. The error is cleared when the temperature drops below B °C.

  • Page 213: Radiation Fin Temperature Rise

    SiBE121123_A Troubleshooting for Outdoor Unit 7.17 Radiation Fin Temperature Rise Error Code Method of Error A radiation fin temperature rise is detected by checking the radiation fin temperature with the compressor on. Detection Error Decision The radiation fin temperature with the compressor on is above A °C. The error is cleared when the temperature drops below B °C Conditions (°C)
  • Page 214 Troubleshooting for Outdoor Unit SiBE121123_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.215 again to start the system. Check No.19 Refer to P.216 Has the PCB been...

  • Page 215: Output Overcurrent Detection

    SiBE121123_A Troubleshooting for Outdoor Unit 7.18 Output Overcurrent Detection Error Code 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. A rotation speed error occurs while the compressor is running.
  • Page 216 Troubleshooting for Outdoor Unit SiBE121123_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.212 overcurrent after the wires have been disconnected and reconnected for part replacement, check the wiring again.

  • Page 217: Check

    SiBE121123_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 a tester. The relationship between normal temperature and resistance is shown in the table and the graphs below.

  • Page 218: Fan Motor Connector Output Check

    Check SiBE121123_A Fan Motor Connector Output Check Check No.02 FTXG, FTXS35/42/50K, FTXS-J, 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 219: Hall Ic Check

    SiBE121123_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 220: Power Supply Waveforms Check

    Check SiBE121123_A Power Supply Waveforms 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 221: Outdoor Electronic Expansion Valve Check

    SiBE121123_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 222: Four Way Valve Performance Check

    Check SiBE121123_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 voltage at 220 - 240 Replace the outdoor unit VAC with compressor PCB.

  • Page 223: Inverter Analyzer Check

    SiBE121123_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 224 Check SiBE121123_A ARC452, ARC433 Series 1) Turn the system on. 2) Select FAN operation with the [MODE] button on the remote controller. 3) Press the 3 buttons (TEMP , TEMP , MODE) simultaneously. → 00 is displayed with the figure of ten's place blinking. 4) Press the [MODE] button.

  • Page 225: Rotating Pulse Input On The Outdoor Unit Pcb Check

    SiBE121123_A Check 8.10 Rotating Pulse Input on the Outdoor Unit PCB Check Check No.16 <Outdoor fan motor> Make sure that the voltage of 320 ± 30 V is applied. 1. Set operation off and power off. Disconnect the connector S70. 2.

  • Page 226: Installation Condition Check

    Check SiBE121123_A 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 227: Outdoor Unit Fan System Check

    SiBE121123_A Check 8.13 Outdoor Unit Fan System Check Check No.19 DC motor 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.

  • Page 228: Power Module Check

    Check SiBE121123_A 8.15 Power Module Check Check No.22 Note: Check to make sure that the voltage between (+) and (–) of the power module (IPM1) 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 229: Part 7 Trial Operation And Field Settings

    SiBE121123_A Part 7 Trial Operation and Field Settings 1. Pump Down Operation................219 2. Forced Cooling Operation ..............220 3. Trial Operation ..................221 3.1 RA Indoor Unit - FTXG, FTXS, ATXS, FTX, ATX, FVXG, FVXS, FLXS, FDXS Series................221 3.2 SA Indoor Unit - FFQ Series ..............223 4.

  • Page 230: Pump Down Operation

    Pump Down Operation SiBE121123_A 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 at the pipes for rooms A and B.

  • Page 231: Forced Cooling Operation

    SiBE121123_A Forced Cooling Operation 2. Forced Cooling Operation Item Forced Cooling Conditions The forced cooling operation is allowed when both the following conditions are met. 1) The outdoor unit is not abnormal and not in the 3-minute standby mode. 2) The outdoor unit is not operating. Start Press the forced cooling operation ON/OFF button (SW1) on the indoor unit for 5 seconds.

  • Page 232: Trial Operation

    Trial Operation SiBE121123_A 3. Trial Operation RA Indoor Unit - FTXG, FTXS, ATXS, FTX, ATX, FVXG, FVXS, FLXS, FDXS Series 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;...
  • Page 233 SiBE121123_A Trial Operation ARC452 Series (1) Press the [ON/OFF] button to turn on the system. (2) Press the both of [TEMP] buttons and the [MODE] button at the same time. (3) Press the [MODE] button twice. ( T appears on the display to indicate that trial operation is selected.) (4) Press the [MODE] button and select operation mode.

  • Page 234: Sa Indoor Unit - Ffq Series

    Trial Operation SiBE121123_A SA Indoor Unit - FFQ Series 3.2.1 Checkpoints To carry out a trial operation, check the following: Check that the temperature setting of the remote controller is at the lowest level in cooling operation or use trial operation mode. Go through the following checklist: Checkpoints Cautions or warnings...
  • Page 235 SiBE121123_A Trial Operation BRC1E51A7 Step Action Remote controller Before test operation Turn on the power supply more than 6 hours before test operation. Open the gas stop valve. Open the liquid stop valve. How to activate test operation Press and hold the [Cancel] button ( ) for 4 seconds to enter the Field setting menu.

  • Page 236: Field Settings

    Field Settings SiBE121123_A 4. Field Settings RA Indoor Unit - FTXG, FTXS, ATXS, FTX, ATX, FVXG, FVXS, FLXS, FDXS Series 4.1.1 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.
  • Page 237 SiBE121123_A Field Settings 4.1.2 When 2 Units are Installed in 1 Room Outline When 2 indoor units are installed in 1 room, 1 of the 2 pairs of indoor unit and wireless remote controller can be set for different address. Both the indoor unit PCB and the wireless remote controller need alteration.
  • Page 238 Field Settings SiBE121123_A Floor Standing FVXG Series (1) Remove the front panel, air filters and front grille. Type (2) Remove the screw, and remove the service cover. Service cover (R14629) (3)Turn on the DIP switch [S2W-1] on the service PCB. Service PCB 1 2 3 4 (R14630)
  • Page 239 SiBE121123_A Field Settings 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]. 4) Remove the electric box (1 screw). 5) Pull out the indoor heat exchanger thermistor. 6) Remove the shield plate (8 tabs).
  • Page 240 Field Settings SiBE121123_A Duct Connected Cut the jumper JA on PCB. Type A D D R E S S ADDRESS : JA EXIST (R17876) 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 241 SiBE121123_A Field Settings 4.1.3 Jumper and Switch Settings Jumper Function When connected When cut (on indoor unit PCB) (factory set) Fan speed setting Fan speed setting; Fan speed setting; “0” (The fan when compressor Remote controller stops.) stops for thermostat setting OFF.

  • Page 242: Sa Indoor Unit - Ffq Series

    Field Settings SiBE121123_A SA Indoor Unit - FFQ Series 4.2.1 How to Change the Field Settings Outline If optional accessories are mounted on the indoor unit, the indoor unit setting may have to be changed. Refer to the instruction manual for each optional accessory. Wired remote BRC1D528 controller...
  • Page 243 SiBE121123_A Field Settings BRC1E51A7 (R12878) a Unit No. b First code No. c Second code No. d Mode Step Action Remote controller Press and hold the [Cancel] button ( for 4 seconds to enter the Field setting menu. Use the buttons to select Field setting list and push the [Menu/Enter] button ( (R12879)
  • Page 244 Field Settings SiBE121123_A Wireless remote BRC7E530W controller [UP] button Mode No. Field setting mode [DOWN] button [RESERVE] button First code No. [MODE] button Second code No. [INSPECTION/TEST OPERATION] button (R15423) To set the field settings, you have to change: Mode No. First code No.
  • Page 245 SiBE121123_A Field Settings 4.2.2 Overview of the Field Settings First Second Code No. Mode Code Description of setting Filter cleaning Ultra Approx. Approx. sign interval longlife 10,000 5,000 filter hrs. hrs. — — Longlife Approx. Approx. filter 2,500 1,250 hrs. hrs.
  • Page 246 Field Settings SiBE121123_A 4.2.3 MAIN / SUB Setting when Using 2 Wired Remote Controllers Outline The MAIN / SUB setting is necessary when 1 indoor unit is controlled by 2 remote controllers. When you use 2 remote controllers (control panel and separate remote controller), set one to MAIN and the other to SUB.
  • Page 247 SiBE121123_A Field Settings 4.2.4 Address and MAIN / SUB Setting for Wireless Remote Controller Outline If several wireless remote controller units are used together in the same room (including the case where both group control and individual remote controller control are used together), be sure to set the addresses for the receiver and wireless remote controller.
  • Page 248 Field Settings SiBE121123_A Wireless Remote 1. Hold down the “ ” button and the “ ” button at the same time for at least 4 seconds to enter the field setting mode. (“SETTING” is indicated on the display). Controller 2. Press the “ ”...
  • Page 249 SiBE121123_A Field Settings After Setting Stick the unit No. label at the decoration panel air discharge outlet as well as on the back of the wireless remote controller. Wireless remote controller Unit No. label Decoration panel (R12961) Note: Set the unit No. of the receiver and the wireless remote controller to be the same. If the settings differ, the signal from the remote controller cannot be received.

  • Page 250: Outdoor Unit

    Field Settings SiBE121123_A Outdoor Unit 4.3.1 Jumper Settings Jumper Function When connected When cut (factory set) ECONO operation ECONO operation is ECONO operation is disabled. prohibition setting available. Improvement of defrost Standard control Reinforced control performance (Ex: The frequency increases, the duration time of defrost lengthens.) Location of the jumpers...

  • Page 251: Silicon Grease On Power Transistor / Diode Bridge

    SiBE121123_A Silicon Grease on Power Transistor / Diode Bridge 5. 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 252: Part 8 Appendix

    SiBE121123_A Part 8 Appendix 1. Piping Diagrams..................242 1.1 Indoor Unit....................242 1.2 Outdoor Unit ..................246 2. Wiring Diagrams..................247 2.1 Indoor Unit....................247 2.2 Outdoor Unit ..................253 3. Removal Procedure (Booklet No.) ............254 Appendix...

  • Page 253: Piping Diagrams

    SiBE121123_A Piping Diagrams 1. Piping Diagrams Indoor Unit 1.1.1 Wall Mounted Type FTXG25/35JV1BW(S)(A) FTXG50JV1BW(S)(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...
  • Page 254 Piping Diagrams SiBE121123_A FTXS50K2V1B, FTXS50J2V1B ATXS50G2V1B INDOOR UNIT 6.4CuT HEAT EXCHANGER THERMISTOR CROSS FLOW FAN ON HEAT EXCH. FIELD PIPING 6.4CuT FAN MOTOR FIELD PIPING 12.7CuT 9.5CuT REFRIGERANT FLOW COOLING HEATING 4D058898G 1.1.2 Floor Standing Type FVXG25/35K2V1B FVXG50K2V1B INDOOR UNIT INDOOR UNIT RADIANT PANEL THERMISTOR 6.4CuT...
  • Page 255 SiBE121123_A Piping Diagrams FVXS25/35FV1B FVXS50FV1B INDOOR UNIT INDOOR UNIT MUFFLER ASSY HEAT EXCHANGER MUFFLER ASSY HEAT EXCHANGER 6.4CuT 7.0CuT 6.4CuT 7.0CuT 6.4CuT 6.4CuT 6.4CuT THERMISTOR THERMISTOR ON HEAT EXCH. ON HEAT EXCH. 6.4CuT 6.4CuT 6.4CuT FAN MOTOR FIELD PIPING TURBO FAN FIELD PIPING FAN MOTOR 6.4CuT...
  • Page 256 Piping Diagrams SiBE121123_A 1.1.4 Duct Connected Type FDXS25/35EAVMB, FDXS25/35E7VMB, FDXS50CVMB, FDXS50C7VMB INDOOR UNIT ( 6.4CuT ) HEAT EXCHANGER THERMISTOR ON HEAT FIELD PIPING ( 6.4CuT ) EXCH. SIROCCO FAN FAN MOTOR FIELD PIPING (A CuT) (A CuT) REFRIGERANT FLOW COOLING HEATING FDXS25EAVMB FDXS35EAVMB...

  • Page 257: Outdoor Unit

    SiBE121123_A Piping Diagrams Outdoor Unit 2MXS40H2V1B, 2MXS40H3V1B, 2AMX40G2V1B, 2AMX40G3V1B OUTDOOR UNIT OUTDOOR TEMPERATURE MUFFLER MOTOR OPERATED VALVE LIQUID PIPE LIQUID LINE BRANCH THERMISTOR WITH HEAT EXCHANGER THERMISTOR STOP VALVE PIPE MUFFLER FILTER 7.0CuT 6.4CuT 6.4CuT 6.4CuT 6.4CuT ROOM A ( 6.4CuT ) 7.0CuT...

  • Page 258: Wiring Diagrams

    Wiring Diagrams SiBE121123_A 2. Wiring Diagrams Indoor Unit 2.1.1 Wall Mounted Type FTXG25/35/50JV1BW(S)(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...
  • Page 259 SiBE121123_A Wiring Diagrams FTXS35/42/50K2V1B, FTXS20/25/35/42/50J2V1B, 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 260 Wiring Diagrams SiBE121123_A 2.1.2 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 261 SiBE121123_A Wiring Diagrams 2.1.3 Floor / Ceiling Suspended Dual Type FLXS25/35/50BAVMB 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 262 Wiring Diagrams SiBE121123_A FDXS25/35E7VMB, FDXS50C7VMB Outdoor Caution Terminal for Operation will restart automatically Transmission centralized control if the main power supply is turned circuit off and then back on again. Signal receiver Signal receiver Switch box (indoor) Indoor Infrared remote control Signal receiver PCB2 Indoor unit...
  • Page 263 SiBE121123_A Wiring Diagrams 2.1.5 Ceiling Mounted Cassette Type FFQ25/35/50B8V1B, FFQ25/35/50B9V1B : 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)

  • Page 264: Outdoor Unit

    Wiring Diagrams SiBE121123_A Outdoor Unit 2MXS40H2V1B, 2MXS40H3V1B, 2AMX40G2V1B, 2AMX40G3V1B INDOOR PCB1 C100 MRM20 IPM1 ROOM A HL1 FU3 MRM10 ROOM B 3.15A 3.15A 1C11 MRCW POWER SUPPLY 102˚C t˚ t˚ t˚ t˚ t˚ t˚ t˚ ( ROOM-A ) ( ROOM-A )

  • Page 265: Removal Procedure (Booklet No.)

    SiBE121123_A Removal Procedure (Booklet No.) 3. Removal Procedure (Booklet No.) Refer to the following booklets for removal procedure. ∗2MXS40/50H2V1B, 2AMX40/50G2V1B Refer to Si121173. ∗2MXS40/50H3V1B, 2AMX40/50G3V1B Refer to Si121295. ∗FTXG25/35/50JV1BW(S)(A) Refer to Si041256. ∗CTXS15/35K2V1B, FTXS20/25K2V1B Refer to Si041258. ∗FTXS35/42/50K2V1B Refer to Si041259. ∗FTXS20/25/35/42/50J2V1B Refer to Si041049.

  • Page 266: Revision History

    Revision History Month / Year Version Revised contents 08 / 2011 SiBE121123 First edition Model addition: 2MXS40/50H3V1B, 2AMX40/50G3V1B, FTXG25/35/50JV1BA, CTXS15/35K2V1B, FTXS20/25/35/42/50K2V1B, FTX20/25/35J2V1B 01 / 2013 SiBE121123_A FDXS25/35E7VMB, FDXS50C7VMB, FFQ25/35/50B9V1B, ATX20/25/35J2V1B...
  • Page 267 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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