Daikin 2MKS40G2V1B Service Manual
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Daikin 2MKS40G2V1B Service Manual

Inverter multi for 2 rooms g-series
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See also: Installation Manual
Service
Manual
Inverter Multi for 2 Rooms
G-Series
[Applied Models]
● Inverter Multi : Cooling Only
● Inverter Multi : Heat Pump
SiBE12-816_D

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Summary of Contents for Daikin 2MKS40G2V1B

  • Page 1 SiBE12-816_D Service Manual Inverter Multi for 2 Rooms G-Series [Applied Models] ● Inverter Multi : Cooling Only ● Inverter Multi : Heat Pump...
  • Page 2 SiBE12-816_D Inverter Multi for 2 Rooms G-Series Cooling Only Outdoor Unit Indoor Unit 2MKS40GV1B FTXS20G2V1B FVXS25FV1B 2MKS40G2V1B FTXS25G2V1B FVXS35FV1B 2MKS50GV1B FTXS35G2V1B FVXS50FV1B 2MKS50G2V1B FTXS42G2V1B FLKS25BAVMB FTXS50G2V1B FLKS35BAVMB FTXS20J2V1B FLKS50BAVMB FTXS25J2V1B FDKS25EAVMB FTXS35J2V1B FDKS35EAVMB FTXS42J2V1B FDKS50CVMB FTXS50J2V1B FFQ25B8V1B FFQ35B8V1B FFQ50B8V1B Heat Pump...

  • Page 3: Table Of Contents

    SiBE12-816_D 1. Introduction .................... vi 1.1 Safety Cautions ..................vi 1.2 Used Icons ....................x Part 1 List of Functions ..............1 1. Functions....................2 1.1 Cooling Only.....................2 1.2 Heat Pump ....................5 Part 2 Specifications ..............10 1. Specifications ..................11 1.1 Cooling Only - Indoor Unit ..............11 1.2 Cooling Only - Outdoor Unit ..............18 1.3 Heat Pump - Indoor Unit.................20 1.4 Heat Pump - Outdoor Unit..............29...
  • Page 4 SiBE12-816_D 2.3 Freeze Prevention Control ..............77 2.4 Hot Start Control (In Heating Operation Only)........78 3. Function of Thermistor ................79 4. Control Specification ................81 4.1 Mode Hierarchy ..................81 4.2 Frequency Control..................83 4.3 Controls at Mode Changing / Start-up............86 4.4 Discharge Pipe Temperature Control.............87 4.5 Input Current Control................88 4.6 Freeze-up Protection Control ..............88 4.7 Heating Peak-cut Control ...............89...
  • Page 5 SiBE12-816_D 6. Troubleshooting for SA Indoor Unit - FFQ Series .......223 6.1 Indoor Unit PCB Abnormality ...............223 6.2 Drain Water Level System Abnormality..........224 6.3 Fan Motor or Related Abnormality ............226 6.4 Drain System Abnormality..............227 6.5 Thermistor or Related Abnormality............228 6.6 Remote Controller Thermistor Abnormality ..........230 6.7 Signal Transmission Error (between Indoor Unit and Remote Controller)........231 6.8 Signal Transmission Error...
  • Page 6 SiBE12-816_D 1.2 Removal of Electrical Box ..............275 1.3 Removal of PCB...................280 1.4 Removal of Sound Blankets ..............285 1.5 Removal of Outdoor Fan / Fan Motor...........287 1.6 Removal of Thermistors ...............290 1.7 Removal of Four Way Valve / Electronic Expansion Valves ....292 1.8 Removal of Compressor...............295 Part 8 Trial Operation and Field Settings.........

  • Page 7: Introduction

    SiBE12-816_D 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 SiBE12-816_D 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 SiBE12-816_D 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 SiBE12-816_D 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 only installation frame.

  • Page 11: Used Icons

    SiBE12-816_D 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

    SiBE12-816_D Part 1 List of Functions 1. Functions....................2 1.1 Cooling Only.....................2 1.2 Heat Pump ....................5 List of Functions...

  • Page 13: Functions

    SiBE12-816_D Functions 1. Functions Cooling Only Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air-Purifying Filter — — Function Clean Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — — Operation Limit for Heating (°CWB) —...
  • Page 14 Functions SiBE12-816_D Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air-Purifying Filter — Function Clean Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — Operation Limit for Heating (°CWB) — — Air-Purifying Filter with Photocatalytic —...

  • Page 15: Function And Control Part

    SiBE12-816_D Functions Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air-Purifying Filter — — Function Clean Operation Limit for Cooling (°CDB) — Photocatalytic Deodorizing Filter — — Operation Limit for Heating (°CWB) — — Air-Purifying Filter with Photocatalytic —...

  • Page 16: Heat Pump

    Functions SiBE12-816_D Heat Pump Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air-Purifying Filter — — Function Clean Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — — Air-Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
  • Page 17 SiBE12-816_D 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 SiBE12-816_D 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 SiBE12-816_D Functions Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air-Purifying Filter — Function Clean Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — Air-Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) — —...
  • Page 20 Functions SiBE12-816_D Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air-Purifying Filter — — Function Clean Operation Limit for Cooling (°CDB) — Photocatalytic Deodorizing Filter — — Air-Purifying Filter with Photocatalytic – Operation Limit for Heating (°CWB) —...

  • Page 21: Part 2 Specifications

    SiBE12-816_D Part 2 Specifications 1. Specifications ..................11 1.1 Cooling Only - Indoor Unit ..............11 1.2 Cooling Only - Outdoor Unit ..............18 1.3 Heat Pump - Indoor Unit.................20 1.4 Heat Pump - Outdoor Unit..............29 Specifications...

  • Page 22: Specifications

    Specifications SiBE12-816_D 1. Specifications Cooling Only - Indoor Unit Wall Mounted Type 50 Hz, 220 - 230 - 240 V Model FTXS20G2V1B FTXS25G2V1B Rated Capacity 2.0 kW Class 2.5 kW Class Front Panel Color White White 9.4 (332) 9.1 (321) 7.4 (262) 7.1 (252) m³/min...
  • Page 23 SiBE12-816_D Specifications 50 Hz, 220 - 230 - 240 V Model FTXS50G2V1B Rated Capacity 5.0 kW Class Front Panel Color White 10.2 (360) 8.6 (305) m³/min Airflow Rates (cfm) 7.0 (246) 6.0 (212) Type Cross Flow Fan Motor Output Speed Steps 5 Steps, Quiet, Auto Air Direction Control...
  • Page 24 Specifications SiBE12-816_D 50 Hz, 220 - 230 - 240 V Model FTXS35J2V1B FTXS42J2V1B Rated Capacity 3.5 kW Class 4.2 kW Class Front Panel Color White White 11.4 (403) 11.3 (399) 8.7 (307) 9.0 (318) m³/min Airflow Rates (cfm) 5.8 (205) 6.8 (240) 4.4 (155) 5.9 (208)
  • Page 25 SiBE12-816_D Specifications Floor Standing Type 50 Hz, 220 - 230 - 240 V Model FVXS25FV1B FVXS35FV1B Rated Capacity 2.5 kW Class 3.5 kW Class Front Panel Color White White 8.2 (290) 8.5 (300) 6.5 (229) 6.7 (237) m³/min Airflow Rates (cfm) 4.8 (169) 4.9 (174)
  • Page 26 Specifications SiBE12-816_D Floor / Ceiling Suspended Dual Type 50 Hz, 220 - 230 - 240 V Model FLKS25BAVMB FLKS35BAVMB Rated Capacity 2.5 kW Class 3.5 kW Class Front Panel Color Almond White Almond White 7.6 (268) 8.6 (304) 6.8 (240) 7.6 (268) m³/min Airflow Rates...
  • Page 27 SiBE12-816_D Specifications Duct Connected Type 50 Hz, 230 V Model FDKS25EAVMB FDKS35EAVMB Rated Capacity 2.5 kW Class 3.5 kW Class — — Front Panel Color 8.7 (307) 8.7 (307) 8.0 (282) 8.0 (282) m³/min Airflow Rates (cfm) 7.3 (258) 7.3 (258) 6.2 (219) 6.2 (219) Type...
  • Page 28 Specifications SiBE12-816_D Ceiling Mounted Cassette Type 50 Hz, 230 V Model FFQ25B8V1B FFQ35B8V1B Rated Capacity 2.5 kW Class 3.5 kW Class Color White White Decoration Panel Dimensions (H × W × D) 55 × 700 × 700 55 × 700 × 700 9.0 (318) 10.0 (353) —...

  • Page 29: Cooling Only - Outdoor Unit

    SiBE12-816_D Specifications Cooling Only - Outdoor Unit 50 Hz, 220 - 240 V Model 2MKS40GV1B 2MKS40G2V1B Casing Color Ivory White Ivory White Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type Compressor Model 1YC23ABXD 1YC23AGXD Motor Output Model FVC50K FVC50K...
  • Page 30 Specifications SiBE12-816_D 50 Hz, 220 - 240 V Model 2MKS50GV1B 2MKS50G2V1B Casing Color Ivory White Ivory White Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type Compressor Model 2YC36BXD 2YC36BXD Motor Output 1,100 1,100 Model FVC50K FVC50K Refrigerant Oil Charge 0.65 0.65 Type...

  • Page 31: Heat Pump - Indoor Unit

    SiBE12-816_D Specifications Heat Pump - Indoor Unit Wall Mounted Type 50 Hz, 220 - 230 - 240 V FTXG25EV1BW FTXG25EV1BS Model Cooling Heating Cooling Heating Rated Capacity 2.5 kW Class 2.5 kW Class Front Panel Color Mat Crystal White Mat Crystal Silver 7.7 (271) 9.0 (317) 7.7 (271)
  • Page 32 Specifications SiBE12-816_D 50 Hz, 220 - 230 - 240 V CTXG50EV1BW CTXG50EV1BS Model Cooling Heating Cooling Heating Rated Capacity 5.0 kW Class 5.0 kW Class Front Panel Color Mat Crystal White Mat Crystal Silver 11.3 (398) 12.6 (444) 11.3 (398) 12.6 (444) 9.1 (320) 10.6 (373)
  • Page 33 SiBE12-816_D Specifications 50 Hz, 220 - 230 - 240 V FTXG35JV1BW FTXG35JV1BS Model Cooling Heating Cooling Heating Rated Capacity 3.5 kW Class 3.5 kW Class Front Panel Color White Silver 10.1 (357) 10.8 (381) 10.1 (357) 10.8 (381) 7.3 (258) 8.6 (304) 7.3 (258) 8.6 (304)
  • Page 34 Specifications SiBE12-816_D 50 Hz, 220 - 230 - 240 V FTXS20G2V1B FTXS25G2V1B Model Cooling Heating Cooling Heating Rated Capacity 2.0 kW Class 2.5 kW Class Front Panel Color White White 9.4 (332) 9.9 (350) 9.1 (321) 9.8 (346) 7.4 (262) 8.2 (290) 7.1 (252) 7.9 (280)
  • Page 35 SiBE12-816_D Specifications 50 Hz, 220 - 230 - 240 V FTXS50G2V1B Model Cooling Heating Rated Capacity 5.0 kW Class Front Panel Color White 10.2 (360) 11.0 (388) 8.6 (305) 9.3 (330) m³/min Airflow Rates (cfm) 7.0 (246) 7.6 (267) 6.0 (212) 6.7 (236) Type Cross Flow Fan...
  • Page 36 Specifications SiBE12-816_D Floor Standing Type 50 Hz, 220 - 230 - 240 V FVXS25FV1B FVXS35FV1B Model Cooling Heating Cooling Heating Rated Capacity 2.5 kW Class 3.5 kW Class Front Panel Color White White 8.2 (290) 8.8 (311) 8.5 (300) 9.4 (332) 6.5 (229) 6.9 (244) 6.7 (237)
  • Page 37 SiBE12-816_D Specifications 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 38 Specifications SiBE12-816_D Duct Connected Type 50 Hz, 230 V FDXS25EAVMB FDXS35EAVMB Model Cooling Heating Cooling Heating Rated Capacity 2.5 kW Class 3.5 kW Class — — Front Panel Color 8.7 (307) 8.7 (307) 8.7 (307) 8.7 (307) 8.0 (282) 8.0 (282) 8.0 (282) 8.0 (282) m³/min...
  • Page 39 SiBE12-816_D Specifications Ceiling Mounted Cassette Type 50 Hz, 230 V FFQ25B8V1B FFQ35B8V1B Model Cooling Heating Cooling Heating Rated Capacity 2.5 kW Class 3.5 kW Class Color White White Decoration Panel Dimensions (H × W × D) 55 × 700 × 700 55 ×...

  • Page 40: Heat Pump - Outdoor Unit

    Specifications SiBE12-816_D Heat Pump - Outdoor Unit 50 Hz, 220 - 240 V 2MXS40GV1B 2MXS40G2V1B Model Cooling Heating Cooling Heating Casing Color Ivory White Ivory White Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type Compressor Model 1YC23ABXD 1YC23AGXD Motor Output Model FVC50K FVC50K...
  • Page 41 SiBE12-816_D Specifications 50 Hz, 220 - 240 V 2MXS50GV1B 2MXS50G2V1B Model Cooling Heating Cooling Heating Casing Color Ivory White Ivory White Type Hermetically Sealed Swing Type Hermetically Sealed Swing Type Compressor Model 2YC36BXD 2YC36BXD Motor Output 1,100 1,100 Model FVC50K FVC50K Refrigerant Oil Charge...

  • Page 42: Part 3 Printed Circuit Board Connector Wiring Diagram

    SiBE12-816_D Part 3 Printed Circuit Board Connector Wiring Diagram 1. Indoor Unit.....................32 1.1 Wall Mounted Type ................32 1.2 Floor Standing Type ................40 1.3 Floor / Ceiling Suspended Dual Type.............42 1.4 Duct Connected Type................44 1.5 Ceiling Mounted Cassette Type .............46 2. Remote Controller .................48 2.1 Wired Remote Controller................48 2.2 Wireless Remote Controller ..............49 3.

  • Page 43: Indoor Unit

    SiBE12-816_D Indoor Unit 1. Indoor Unit Wall Mounted Type 1.1.1 FTXG25/35EV1BW(S), CTXG50EV1BW(S) Connectors and PCB (1): Control PCB Other Parts 1) S1 Connector for fan motor 2) S21 Connector for centralized control (HA) 3) S32 Indoor heat exchanger thermistor 4) S36 Connector for INTELLIGENT EYE sensor PCB 5) S41 Connector for swing motors...
  • Page 44 Indoor Unit SiBE12-816_D PCB Detail PCB (1): Control PCB JB JA JC LED A 2P165085-1 PCB (2): Signal Receiver PCB RTH1 LED4 LED2 LED3 2P165085-1 PCB (3): INTELLIGENT EYE Sensor PCB 3P043610-2 Printed Circuit Board Connector Wiring Diagram...
  • Page 45 SiBE12-816_D Indoor Unit 1.1.2 FTXG25/35JV1BW(S), CTXG50JV1BW(S) Connectors and PCB (1): Control PCB Other Parts 1) S21 Connector for centralized control (HA) 2) S25 Connector for INTELLIGENT EYE sensor PCB 3) S32 Indoor heat exchanger thermistor 4) S41 Connector for swing motors 5) S42 Connector for reduction motor (front panel mechanism) and limit switch 6) S46...
  • Page 46 Indoor Unit SiBE12-816_D PCB Detail PCB (1): Control PCB JB JC LED A S200 2P254830-1 Printed Circuit Board Connector Wiring Diagram...
  • Page 47 SiBE12-816_D Indoor Unit PCB (2): Signal Receiver / Display PCB 3P254832-1 PCB (3): INTELLIGENT EYE Sensor PCB 3P255914-1 Printed Circuit Board Connector Wiring Diagram...
  • Page 48 Indoor Unit SiBE12-816_D 1.1.3 FTXS20/25/35/42/50G2V1B, FTXS20/25/35/42/50J2V1B Connectors and PCB (1): Control PCB Other Parts 1) S1 Connector for DC fan motor 2) S21 Connector for centralized control (HA) 3) S25 Connector for INTELLIGENT EYE sensor PCB 4) S32 Indoor heat exchanger thermistor 5) S41 Connector for swing motors 6) S46...
  • Page 49 SiBE12-816_D Indoor Unit PCB Detail PCB (1): Control PCB LED A 2P206687-1 Printed Circuit Board Connector Wiring Diagram...
  • Page 50 Indoor Unit SiBE12-816_D PCB (2): Signal Receiver PCB 3P210728-1 PCB (3): Display PCB RTH1 LED3 LED2 LED1 3P210728-1 PCB (4): INTELLIGENT EYE Sensor PCB 3EB86013-1 Printed Circuit Board Connector Wiring Diagram...

  • Page 51: Floor Standing Type

    SiBE12-816_D Indoor Unit Floor Standing Type 1.2.1 FVXS25/35/50FV1B Connectors and Other Parts PCB (1): Sensor PCB 1) S49 Connector for control PCB 2) RTH2 (R1T) Room temperature thermistor PCB (2): Control PCB 1) S1 Connector for fan motor 2) S21 Connector for centralized control (HA) 3) S26 Connector for service PCB...
  • Page 52 Indoor Unit SiBE12-816_D PCB Detail PCB (1): Sensor PCB RTH2 3P191450-1 PCB (2): Control PCB LED A S21 S41 2P191446-1 PCB (3): Service PCB PCB (4): Display PCB LED1 LED2 3P191447-1 SW2-4 3P191448-1 ★ LED3 does not function. Printed Circuit Board Connector Wiring Diagram...

  • Page 53: Floor / Ceiling Suspended Dual Type

    SiBE12-816_D Indoor Unit Floor / Ceiling Suspended Dual Type 1.3.1 FLK(X)S25/35/50BAVMB Connectors and PCB (1): Control PCB Other Parts 1) S6 Connector for swing motor (horizontal swing) 2) S7 Connector for AC fan motor 3) S21 Connector for centralized control (HA) 4) S24 Connector for display PCB 5) S26...
  • Page 54 Indoor Unit SiBE12-816_D PCB Detail PCB (1): Control PCB LED A 2P084352-3 PCB (2): Power Supply PCB 2P084361-1 PCB (3): Display PCB PCB (4): Signal Receiver PCB LED3 LED2 LED1 EX511 REV 12 2P084377-5 PHOTO 2P084377- S31 (RTH) 2P084377-5 Printed Circuit Board Connector Wiring Diagram...

  • Page 55: Duct Connected Type

    SiBE12-816_D Indoor Unit Duct Connected Type 1.4.1 FDK(X)S25/35EAVMB, FDK(X)S50CVMB Connectors and PCB (1): Control PCB Other Parts 1) S1 Connector for AC fan motor 2) S7 Connector for AC fan motor (Hall IC) 3) S21 Connector for centralized control (HA) 4) S26 Connector for display PCB 5) S32...
  • Page 56 Indoor Unit SiBE12-816_D PCB Detail PCB (1): Control PCB LED A 2P131149-1 PCB (2): Display PCB LED3 LED2 RTH1 LED1 2P084375-1 Printed Circuit Board Connector Wiring Diagram...

  • Page 57: Ceiling Mounted Cassette Type

    SiBE12-816_D Indoor Unit Ceiling Mounted Cassette Type 1.5.1 FFQ25/35/50/60B8V1B Connectors and [A1P]: Control PCB Other Parts 1) X5A Connector for terminal board (for wired remote controller) 2) X10A, X11A Connector for transformer 3) X15A Connector for float switch 4) X17A, X18A Connector for indoor heat exchanger thermistor 5) X19A Connector for room temperature thermistor...
  • Page 58 Indoor Unit SiBE12-816_D PCB Detail [A1P]: Control PCB X20A X25A X27A X11A X10A X33A X18A X19A X61A X60A X36A X40A X17A X15A 2P095006-8 X24A X35A Printed Circuit Board Connector Wiring Diagram...

  • Page 59: Remote Controller

    SiBE12-816_D Remote Controller 2. Remote Controller Wired Remote Controller 2.1.1 BRC1D528 Connectors and 1) P1, P2 Terminal for indoor unit Other Parts 2) R1T Room temperature thermistor 3) SS1 MAIN / SUB setting switch ∗ Refer to page 310 for detail. PCB Detail 2P113638-2 Printed Circuit Board Connector Wiring Diagram...

  • Page 60: Wireless Remote Controller

    Remote Controller SiBE12-816_D Wireless Remote Controller 2.2.1 BRC7E530W/531W Connectors and [A3P]: Signal Receiver PCB Other Parts 1) X1A Connector for display PCB 2) X2A Connector for control PCB 3) SS1 MAIN / SUB setting switch Address setting switch ∗ Refer to page 311 for detail. [A4P]: Display PCB 1) X1A Connector for signal receiver PCB...

  • Page 61: Outdoor Unit

    SiBE12-816_D Outdoor Unit 3. Outdoor Unit 2MK(X)S40/50GV1B, 2MK(X)S40/50G2V1B Connectors and Other Parts 1) S20 Connector for electronic expansion valve coil A port 2) S21 Connector for 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...
  • Page 62 Outdoor Unit SiBE12-816_D PCB Detail 40 class HL1 E LED A J3 J4 J5 U, V, W 2P190760-2 50 class LED A S20 S91 S92 J4 J5 U, V, W 2P197402-1 Printed Circuit Board Connector Wiring Diagram...

  • Page 63: Part 4 Function And Control

    SiBE12-816_D Part 4 Function and Control 1. Function of Indoor Unit (RA Models).............53 1.1 Temperature Control ................53 1.2 Frequency Principle................53 1.3 Operation Starting Control..............55 1.4 Airflow Direction Control.................56 1.5 Fan Speed Control for Indoor Units............58 1.6 Program Dry Operation ................59 1.7 Automatic Operation................60 1.8 Thermostat Control.................61 1.9 NIGHT SET Mode ..................63...

  • Page 64: Function Of Indoor Unit (Ra Models)

    Function of Indoor Unit (RA Models) SiBE12-816_D 1. Function of Indoor Unit (RA Models) Temperature Control Definitions of The definitions of temperatures are classified as following. Temperatures Room temperature: temperature of lower part of the room Set temperature: temperature set by remote controller Room thermistor temperature: temperature detected by room temperature thermistor Target temperature: temperature determined by microcomputer Target temperature...
  • Page 65 SiBE12-816_D Function of Indoor Unit (RA Models) Drawing of The following drawing shows a schematic view of the inverter principle: Inverter Refrigerant circulation rate (high) high speed Amount of heat Amount of heat exchanged air (large) exchanged air (large) high f low f Amount of heat Amount of heat...

  • Page 66: Operation Starting Control

    Function of Indoor Unit (RA Models) SiBE12-816_D Operation Starting Control Wall Mounted Type: FTXG, CTXG Series The system carries out the following control at the beginning to conduct every functional parts properly. 1. Opening the front panel fully 2. Output of the ∆ D signal after the front panel starts moving 3.

  • Page 67: Airflow Direction Control

    SiBE12-816_D Function of Indoor Unit (RA Models) Airflow Direction Control Power-Airflow The large flaps send a large volume of air downwards to the floor. The flap provides an optimum control in cooling, dry, and heating mode. Dual Flaps Cooling / Dry Mode During cooling or dry mode, the flap retracts into the indoor unit.
  • Page 68 Function of Indoor Unit (RA Models) SiBE12-816_D Floor / Ceiling Suspended Dual Type Vertical Swing (up and down) Cooling / Dry / Fan Heating Ceiling (R2964) (R2963) Floor (R2966) (R2967) 3-D Airflow Wall Mounted Type: FTXS Series Alternative repetition of vertical and horizontal swing motions enables uniform air-conditioning of the entire room.

  • Page 69: Fan Speed Control For Indoor Units

    SiBE12-816_D Function of Indoor Unit (RA Models) Fan Speed Control for Indoor Units Outline Phase control and fan speed control contains 9 steps: LLL, LL, SL, L, ML, M, MH, H, and HH. The airflow rate can be automatically controlled depending on the difference between the room thermistor temperature and the target temperature.

  • Page 70: Program Dry Operation

    Function of Indoor Unit (RA Models) SiBE12-816_D COMFORT Wall Mounted Type The fan speed is controlled automatically within the following steps. AIRFLOW Cooling: L tap – MH tap (same as AUTOMATIC) Operation Heating: ML tap – M tap ~ MH tap (depending on the model) The latest command has the priority between POWERFUL and COMFORT AIRFLOW.

  • Page 71: Automatic Operation

    SiBE12-816_D Function of Indoor Unit (RA Models) Automatic Operation Outline Automatic Cooling / Heating Function When the AUTO mode is selected with the remote controller, the microcomputer automatically determines the operation mode as cooling or heating according to the room temperature and the set temperature at start-up, and automatically operates in that mode.

  • Page 72: Thermostat Control

    Function of Indoor Unit (RA Models) SiBE12-816_D Thermostat Control Thermostat control is based on the difference between the room thermistor temperature and the target temperature. Thermostat OFF Condition The temperature difference is in the zone A. Thermostat ON Condition The temperature difference returns to the zone C after being in the zone A. The system resumes from defrost control in any zones except A.
  • Page 73 SiBE12-816_D Function of Indoor Unit (RA Models) Heating Wall Mounted Type: FTXG-J, CTXG-J Series Room thermistor temperature – target temperature 2.0˚C 1.5˚C 0.5˚C (R11894) Wall Mounted Type: FTXG-E, CTXG-E, FTXS Series Floor Standing Type Room thermistor temperature – target temperature 1.5˚C 1.0˚C 0˚C...

  • Page 74: Night Set Mode

    Function of Indoor Unit (RA Models) SiBE12-816_D 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 75: Econo Operation

    SiBE12-816_D Function of Indoor Unit (RA Models) 1.10 ECONO Operation FTXG-J, CTXG-J, FTXS, FVXS Series The "ECONO operation" reduces the maximum operating current and power consumption during start-up etc.. This operation is particularly convenient for energy-saving-oriented users. It is also a major bonus for those whose breaker capacities do not allow the use of multiple electrical devices and air conditioners.

  • Page 76: Home Leave Operation

    Function of Indoor Unit (RA Models) SiBE12-816_D 1.11 HOME LEAVE Operation Outline FLK(X)S, FDK(X)S Series HOME LEAVE operation is a function that allows you to record your favorite set temperature and airflow rate. You can start your favorite operation mode simply by pressing the [HOME LEAVE] button on the remote controller.

  • Page 77: 2-Area Intelligent Eye Operation

    SiBE12-816_D Function of Indoor Unit (RA Models) 1.12 2-Area INTELLIGENT EYE Operation Outline Wall Mounted Type: FTXS 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 78 Function of Indoor Unit (RA Models) SiBE12-816_D 2. Motions (for example: in cooling) within 20 minutes 20 min. 20 min. Human detection signal RESET. (From area A or B) Target temperature INTELLIGENT EYE lamp Remote controller INTELLIGENT EYE button Operation Set speed Set speed Fan speed ( 1)

  • Page 79: Intelligent Eye Operation

    SiBE12-816_D Function of Indoor Unit (RA Models) 1.13 INTELLIGENT EYE Operation Outline Wall Mounted Type: FTXG, CTXG 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 80: Inverter Powerful Operation

    Function of Indoor Unit (RA Models) SiBE12-816_D 1.14 Inverter POWERFUL Operation Outline In order to exploit the cooling and heating capacity to full extent, operate the air conditioner by increasing the indoor fan rotating speed and the compressor frequency. Detail When POWERFUL button is pressed, the fan speed and target temperature are converted to the following states for 20 minutes.
  • Page 81 SiBE12-816_D Function of Indoor Unit (RA Models) Brightness The brightness of the multi-colored indicator lamp can be adjusted L (low), H (high), or OFF. Setting 1. Press the center of the Temp button and the Mode button at the same time. (R11669) “...

  • Page 82: Other Functions

    Function of Indoor Unit (RA Models) SiBE12-816_D 1.15 Other Functions 1.15.1 Hot-Start Function In order to prevent the cold air blast that normally comes when heating operation is started, the temperature of the indoor heat exchanger is detected, and either the airflow is stopped or is made very weak thereby carrying out comfortable heating of the room.
  • Page 83 SiBE12-816_D Function of Indoor Unit (RA Models) 1.15.7 Auto-restart Function Even if a power failure (including one for just a moment) occurs during the operation, the operation restarts automatically when the power is restored in the same condition as before the power failure.

  • Page 84: Function Of Indoor Unit (Sa Models)

    Function of Indoor Unit (SA Models) SiBE12-816_D 2. Function of Indoor Unit (SA Models) Drain Pump Control 2.1.1 When the Float Switch is Tripped While the Cooling Thermostat is The remote controller displays "A3" and the indoor unit stops. Thermostat (running) Float switch Drain pump...
  • Page 85 SiBE12-816_D Function of Indoor Unit (SA Models) 2.1.3 When the Float Switch is Tripped During Heating Operation: The remote controller displays "A3" and the indoor unit stops. Thermostat (running) Humidifier Reset Float switch Drain pump 5 min. 5 sec. 5 min. (R12935) During heating operation, if the float switch is not reset even after the 5 minutes operation, 5 seconds stop, 5 minutes operation cycle ends, operation continues until the switch is reset.

  • Page 86: Thermostat Sensor In Remote Controller

    Function of Indoor Unit (SA Models) SiBE12-816_D Thermostat Sensor in Remote Controller Temperature is controlled by both the thermostat sensor in remote controller and air suction thermostat in the indoor unit. (This is however limited to when the field setting for the thermostat sensor in remote controller is set to “Use”.) Cooling If there is a significant difference in the set temperature and the suction temperature, fine...
  • Page 87 SiBE12-816_D Function of Indoor Unit (SA Models) Heating When heating, the hot air rises to the top of the room, resulting in the temperature being lower near the floor where the occupants are. When controlling by body thermostat sensor only, the indoor unit may therefore be turned off by the thermostat before the lower part of the room reaches the set temperature.

  • Page 88: Freeze Prevention Control

    Function of Indoor Unit (SA Models) SiBE12-816_D 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 89: Hot Start Control (In Heating Operation Only)

    SiBE12-816_D Function of Indoor Unit (SA Models) Hot Start Control (In Heating Operation Only) Outline At startup with thermostat ON or after the completion of defrosting in heating operation, the indoor unit fan is controlled to prevent cold air from blasting out and ensure startup capacity. Detail Defrost ending or oil return ending Hot start ending conditions...

  • Page 90: Function Of Thermistor

    Function of Thermistor SiBE12-816_D 3. Function of Thermistor Expansion valve Four way valve (R7042) Compressor A Outdoor Heat 1. The outdoor 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 electronic expansion valve Thermistor...
  • Page 91 SiBE12-816_D Function of Thermistor D 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 electronic expansion valve Thermistor opening so that the target discharge pipe temperature can be obtained.

  • Page 92: Control Specification

    Control Specification SiBE12-816_D 4. Control Specification Mode Hierarchy Outline There are two modes; the one is the normal operation mode and the other is the forced operation mode for installation and providing service. Detail Cooling only model There are following models; stop and cooling (includes drying). Air conditioner control mode Forced operating mode Forced cooling...
  • Page 93 SiBE12-816_D Control Specification Determine Operation Mode The system judges the operation mode command which is set by each room in accordance with the procedure, and determines the operation mode of the system. The following procedure is taken when the modes conflict with each other. *1.

  • Page 94: Frequency Control

    Control Specification SiBE12-816_D 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 95 SiBE12-816_D Control Specification For Heat Pump Model 1. Determine command frequency Command frequency is determined in the following order of priority. 1. Limiting defrost control time 2. Forced cooling / heating 3. Indoor frequency command 2. Determine upper limit frequency The minimum value is set as the upper limit frequency among the frequency upper limits of the following functions: Compressor protection, input current, discharge pipe temperature, low Hz high pressure...
  • Page 96 Control Specification SiBE12-816_D PI Control (Determine Frequency Up / Down by ∆ D Signal) 1. P control A total of the ∆ D value is calculated in each sampling time (20 seconds), and the frequency is adjusted according to its difference from the frequency previously calculated. 2.

  • Page 97: Controls At Mode Changing / Start-Up

    SiBE12-816_D Control Specification Controls at Mode Changing / Start-up 4.3.1 Preheating Operation Outline The inverter operation in open phase starts with the conditions of the preheating command from the indoor, the outdoor temperature, and discharge pipe temperature. Detail ON Condition When outdoor temperature is below 10.5°C and discharge pipe temperature is below 10.5°C, the inverter operation in open phase starts.

  • Page 98: Discharge Pipe Temperature Control

    Control Specification SiBE12-816_D 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 Unit seconds Discharge Pipe Temperature Control...

  • Page 99: Input Current Control

    SiBE12-816_D Control Specification Input Current Control Outline An input current is detected by the CT during the compressor is running, and the frequency upper limit is set from the input current. In case of heat pump model, this control, which is the upper limit control of the frequency, takes priority to the lower limit control of four way valve operation compensation.

  • Page 100: Heating Peak-Cut Control

    Control Specification SiBE12-816_D 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 A seconds after the number of operation room is changed. The maximum value of the indoor heat exchanger temperature controls the following (excluding stopped rooms).

  • Page 101: Liquid Compression Protection Function

    SiBE12-816_D Control Specification Liquid Compression Protection Function Outline In order to obtain the dependability of the compressor, the compressor is stopped according to the outdoor temperature and temperature of the outdoor heat exchanger. Detail Operation stops depending on the outdoor temperature Compressor turns off under the conditions that the system is in cooling operation and outdoor temperature is below 0°C.

  • Page 102: Electronic Expansion Valve Control

    Control Specification SiBE12-816_D 4.11 Electronic Expansion Valve Control Outline The following items are included in the electronic expansion valve control. Electronic expansion valve is fully closed 1. Electronic expansion valve is fully closed when turning on the power. 2. Pressure equalizing control Room Distribution Control 1.
  • Page 103 SiBE12-816_D Control Specification Detail The followings are the examples of control which function in each mode by the electronic expansion valve control. Operation pattern : function × : not function When power is turned on × × × × × ×...
  • Page 104 Control Specification SiBE12-816_D 4.11.1 Fully Closing with Power on The electronic expansion valve is initialized when the power is turned on. The opening position is set and the pressure equalization is developed. 4.11.2 Pressure Equalization Control When the compressor is stopped, the pressure equalization control is activated. The electronic expansion valve opens, and develops the pressure equalization.
  • Page 105 SiBE12-816_D Control Specification 4.11.8 Target Discharge Pipe Temperature Control The target discharge pipe temperature is obtained from the indoor and outdoor heat exchanger temperature, and the electronic expansion valve opening is adjusted so that the actual discharge pipe temperature becomes close to the target discharge pipe temperature. (Indirect SH (superheating) control using the discharge pipe temperature) The target discharge pipe temperature is set as to become the aiming SH.

  • Page 106: Malfunctions

    Control Specification SiBE12-816_D 4.11.10 Disconnection of the Discharge Pipe Thermistor Outline The disconnection of the discharge pipe thermistor is detected by comparing the discharge pipe temperature with the condensing temperature. If the discharge pipe thermistor is disconnected, the electronic expansion valve opens according to the outdoor temperature and the operation frequency, and operates for a specified time, and then stops.
  • Page 107 SiBE12-816_D Control Specification 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 small comparing with that in the normal operation when refrigerant is insufficient, and refrigerant shortage is detected by checking a power consumption.
  • Page 108 Control Specification SiBE12-816_D 4.12.4 Anti-icing Control During cooling, if the indoor heat exchanger temperature in the operation stopped room becomes below the specified temperature for the specified time, the electronic expansion valve is opened in the operation stopped room as specified, and the fully closed operation is carried out.

  • Page 109: Part 5 Operation Manual

    SiBE12-816_D Part 5 Operation Manual 1. System Configuration................99 2. RA Indoor Unit..................100 2.1 FTXG-J, CTXG-J Series - ARC466A1 ..........100 2.2 FTXS, FVXS Series - ARC452A1, A3 ..........122 2.3 FTXG-E, CTXG-E, FLK(X)S, FDK(X)S Series - ARC433B41, B67, B68, B69, B76............149 3. SA Indoor Unit - FFQ Series ...............168 3.1 BRC1D528 ...................168 3.2 BRC7E530W/531W................183 Operation Manual...

  • Page 110: System Configuration

    System Configuration SiBE12-816_D 1. System Configuration After the installation and test operation of the room air conditioner have been completed, it should be operated and handled as described below. Every user would like to know the correct method of operation of the room air conditioner, to check if it is capable of cooling (or heating) well, and to know a clever method of using it.

  • Page 111: Ra Indoor Unit

    SiBE12-816_D RA Indoor Unit 2. RA Indoor Unit FTXG-J, CTXG-J Series - ARC466A1 2.1.1 Name of Parts Name of Parts Indoor Unit INTELLIGENT EYE Air inlet sensor • Appearance of the indoor unit may differ. • It detects the movements of people and automatically switches between normal operation and energy saving...
  • Page 112 RA Indoor Unit SiBE12-816_D Open the front panel Panel support plate Air filter Titanium apatite photocatalytic air-purifying filter Outdoor Unit • Appearance of the outdoor unit may differ from some models. Air inlet Outdoor temperature (back and sensor (back) side) Drain hose Earth terminal •...
  • Page 113 SiBE12-816_D RA Indoor Unit Name of Parts Remote Controller Signal transmitter Receiver 50cm or more Display (LCD) • It displays the current settings. • To use the remote controller, aim the (In this illustration, each section is transmitter at the indoor unit. If there shown with its displays on for the is anything to block signals between purpose of explanation.)
  • Page 114 RA Indoor Unit SiBE12-816_D Open the front cover MODE selector button • It selects the operation mode. (AUTO/DRY/COOL/HEAT/ FAN) Page 11 ECONO button • ECONO operation. Page 20 SWING button • Adjusting the airflow direction. Page 13 QUIET button • OUTDOOR UNIT QUIET operation.

  • Page 115: Fan Operation

    SiBE12-816_D RA Indoor Unit 2.1.2 AUTO · DRY · COOL · HEAT · FAN Operation AUTO · DRY · COOL · HEAT · FAN Operation The air conditioner operates with the operation mode of your choice. From the next time on, the air conditioner will operate with the same operation mode. To start operation Press and select a operation mode.

  • Page 116: Operating Conditions

    RA Indoor Unit SiBE12-816_D To change the temperature setting Press • The displayed items on the LCD will change whenever either one of the buttons is pressed. COOL operation HEAT operation AUTO operation DRY or FAN operation 18-32˚C 10-30˚C 18-30˚C The temperature setting is Press to raise the temperature and press...
  • Page 117 SiBE12-816_D RA Indoor Unit 2.1.3 Adjusting the Airflow Direction and Rate Adjusting the Airflow Direction and Rate You can adjust the airflow direction to increase your comfort. To start auto swing Upper and lower airflow direction Press • “ ” is displayed on the LCD. •...
  • Page 118 RA Indoor Unit SiBE12-816_D To adjust the airflow rate setting Press • Each pressing of advances the airflow rate setting in sequence. Auto Indoor unit quiet Middle low High Middle high Middle • When the airflow is set to “ ”, indoor unit quiet operation will start and the noise from the unit will become quieter.
  • Page 119 SiBE12-816_D RA Indoor Unit 2.1.4 COMFORT AIRFLOW Operation COMFORT AIRFLOW Operation The flow of air will be in the upward direction while in COOL operation and in the downward direction while in HEAT operation, which will provide a comfortable wind that will not come in direct contact with people. To start COMFORT AIRFLOW operation Press •...
  • Page 120 RA Indoor Unit SiBE12-816_D 2.1.5 INTELLIGENT EYE Operation INTELLIGENT EYE Operation “INTELLIGENT EYE” is the infrared sensor which detects the human movement. If nobody in the room for more than 20 minutes, the operation automatically changes to energy saving operation. To start INTELLIGENT EYE operation Press •...
  • Page 121 SiBE12-816_D RA Indoor Unit INTELLIGENT EYE Operation [Example] When somebody in the room When nobody in the room Somebody back in the room Normal operation 20 minutes after, start Back to normal operation. energy saving operation. • The air conditioner is in normal •...
  • Page 122 RA Indoor Unit SiBE12-816_D 2.1.6 POWERFUL Operation POWERFUL Operation POWERFUL operation quickly maximizes the cooling (heating) effect in any operation mode. You can get the maximum capacity. To start POWERFUL operation Press during operation. • POWERFUL operation ends in 20 minutes. Then the system automatically operates again with the previous settings which were used before POWERFUL operation.
  • Page 123 SiBE12-816_D RA Indoor Unit 2.1.7 OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET operation lowers the noise level of the outdoor unit by changing the frequency and fan speed on the outdoor unit. This function is convenient during the night. To start OUTDOOR UNIT QUIET operation Press •...
  • Page 124 RA Indoor Unit SiBE12-816_D 2.1.8 ECONO Operation ECONO Operation ECONO operation is a function which enables efficient operation by limiting the maximum power consumption value. This function is useful for cases in which attention should be paid to ensure a circuit breaker will not trip when the product runs alongside other appliances.
  • Page 125 SiBE12-816_D RA Indoor Unit 2.1.9 OFF TIMER Operation OFF TIMER Operation Timer functions are useful for automatically switching the air conditioner on or off at night or in the morning. You can also use OFF TIMER and ON TIMER in combination.
  • Page 126 RA Indoor Unit SiBE12-816_D 2.1.10 ON TIMER Operation ON TIMER Operation To use ON TIMER operation • Check that the clock is correct. If not, set the clock to the present time. Press • “ ” is displayed on the LCD. •...
  • Page 127 SiBE12-816_D RA Indoor Unit 2.1.11 WEEKLY TIMER Operation WEEKLY TIMER Operation Up to 4 timer settings can be saved for each day of the week. It is convenient if the WEEKLY TIMER is set according to the family’s life style. Using in these cases of WEEKLY TIMER Example: The same timer settings are made for the week from Monday through Friday while different timer settings are made for the weekend.
  • Page 128 RA Indoor Unit SiBE12-816_D To use WEEKLY TIMER operation Setting mode • Make sure the day of the week and time are set. If not, set the day of the week and time. Program 1 Program 2 Program 3 Program 4 [Monday] 25˚C 27˚C...
  • Page 129 SiBE12-816_D RA Indoor Unit WEEKLY TIMER Operation Press to select the desired time. • The time can be set between 0:00 and 23:50 in 10 minute intervals. • To return to the ON/OFF TIMER mode setting, press • Go to step when setting the OFF TIMER.
  • Page 130 RA Indoor Unit SiBE12-816_D Copy mode • A reservation made once can be copied to another day of the week. The whole reservation of the selected day of the week will be copied. Program 1 Program 2 Program 3 Program 4 [Monday] 25˚C 27˚C...
  • Page 131 SiBE12-816_D RA Indoor Unit WEEKLY TIMER Operation Confirming a reservation • The reservation can be confirmed. Setting Displays Normal Confirmation Press • The day of the week and the reservation number of the current day will be displayed. Press to select the day of the week and the reservation number to be confirmed.
  • Page 132 RA Indoor Unit SiBE12-816_D 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 133: Ftxs, Fvxs Series - Arc452A1, A3

    SiBE12-816_D RA Indoor Unit FTXS, FVXS Series - ARC452A1, A3 2.2.1 Manual Contents and Reference Page Wall Mounted Type Floor Standing Type Model Series FTXS20-50G2V1B FVXS25-50FV1B FTXS20-50J2V1B Read Before Operation Names of Parts Operation 129 ★ 129 ★ AUTO · DRY · COOL · HEAT · FAN Operation 131 ★...
  • Page 134 RA Indoor Unit SiBE12-816_D 2.2.2 Names of Parts FTXS20/25/35/42/50G2V1B, FTXS20/25/35/42/50J2V1B Names of parts Indoor Unit Operation Manual...
  • Page 135 SiBE12-816_D RA Indoor Unit Indoor Unit 1. Air filter 12. Indoor Unit ON/OFF switch • Push this switch once to start operation. 2. Titanium Apatite Photocatalytic Push once again to stop it. Air-Purifying Filter: • The operation mode refers to the following •...
  • Page 136 RA Indoor Unit SiBE12-816_D Remote Controller <Open the front cover> <ARC452A3> 1. Signal transmitter: 11. SWING button: • It sends signals to the indoor unit. • Vertical blades (louvers) 2. Display: 12. COMFORT/SENSOR button: • COMFORT AIRFLOW and INTELLIGENT • It displays the current settings. EYE operation (In this illustration, each section is shown with its displays ON for the...

  • Page 137: Names Of Parts

    SiBE12-816_D RA Indoor Unit FVXS25/35/50FV1B Names of parts Indoor Unit Opening the Front Panel Air outlet selection switch • This setting blows air from upper outlet only. • This setting automatically decides a blow pattern depending on mode and conditions. •...
  • Page 138 RA Indoor Unit SiBE12-816_D Indoor Unit 1. Titanium Apatite Photocatalytic • The operation mode refers to the following Air-Purifying Filter: table. • These filters are attached to the inside of Temperature Airflow Model Mode the air filters. setting rate 2. Air outlet COOLING COOL 22˚C...
  • Page 139 SiBE12-816_D RA Indoor Unit Remote Controller <Open the lid> <ARC452A1> 1. Signal transmitter: 9. ECONO button: • It sends signals to the indoor unit. ECONO operation 2. Display: 10. SWING button: • It displays the current settings. • Adjusting the Airflow Direction (In this illustration, each section is shown 11.
  • Page 140 RA Indoor Unit SiBE12-816_D 2.2.3 AUTO · DRY · COOL · HEAT · FAN Operation AUTO · DRY · COOL · HEAT · FAN Operation The air conditioner operates with the operation mode of your choice. From the next time on, the air conditioner will operate with the same operation mode.
  • Page 141 SiBE12-816_D RA Indoor Unit To change the airflow rate setting 5. Press “FAN setting button”. DRY mode AUTO or COOL or HEAT or FAN mode Five levels of airflow rate setting from “ ” to “ ” plus “ ” “ ”...
  • Page 142 RA Indoor Unit SiBE12-816_D 2.2.4 Adjusting the Airflow Direction FTXS20/25/35/42/50G2V1B, FTXS20/25/35/42/50J2V1B Adjusting the Airflow Direction You can adjust the airflow direction to increase your comfort. To adjust the horizontal blades (flaps) 1. Press “SWING button ”. • “ ” is displayed on the LCD and the flaps will begin to swing.
  • Page 143 SiBE12-816_D RA Indoor Unit To start 3-D Airflow 1. 3. Press the “SWING button ” and the “SWING button ”: the “ ” and “ ” display will light up and the flap and louvers will move in turn. To cancel 3-D Airflow 2.
  • Page 144 RA Indoor Unit SiBE12-816_D FVXS25/35/50FV1B Adjusting the Airflow Direction You can adjust the airflow direction to increase your comfort. To adjust the horizontal blade (flap) 1. Press “SWING button ”. • “ ” is displayed on the LCD and the flaps will begin to swing. 2.
  • Page 145 SiBE12-816_D RA Indoor Unit Airflow Airflow selection • Make airflow selection according to what suits you. When setting the airflow selection switch to • Air conditioner automatically decides the appropriate blowing pattern depending on the operating mode/situation. Operating mode Situation Blowing pattern •...
  • Page 146 RA Indoor Unit SiBE12-816_D 2.2.5 COMFORT AIRFLOW and INTELLIGENT EYE Operation COMFORT AIRFLOW and INTELLIGENT EYE Operation The INTELLIGENT EYE incorporates infrared sensors to detect the presence of people in the conditioned room. When these sensors detect people, the louvers will adjust the airflow direction to an area where people are not present.
  • Page 147 SiBE12-816_D RA Indoor Unit Notes on “COMFORT AIRFLOW Operation” • The flap position will change, preventing air from blowing directly on the occupants of the room. • POWERFUL operation and COMFORT AIRFLOW operation cannot be used at the same time. •...
  • Page 148 RA Indoor Unit SiBE12-816_D COMFORT AIRFLOW and INTELLIGENT EYE Operation Notes on “INTELLIGENT EYE Operation” • While the air conditioner is in INTELLIGENT EYE operation, the louvers will adjust the airflow direction if there are people in the sensing areas of the INTELLIGENT EYE so that the leftward or rightward airflow will not be directed to the people.
  • Page 149 SiBE12-816_D RA Indoor Unit 2.2.6 POWERFUL Operation POWERFUL Operation POWERFUL operation quickly maximizes the cooling (heating) effect in any operation mode. You can get the maximum capacity. To start POWERFUL operation 1. Press “POWERFUL button”. • POWERFUL operation ends in 20 minutes.
  • Page 150 RA Indoor Unit SiBE12-816_D 2.2.7 OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET operation lowers the noise level of the outdoor unit by changing the frequency and fan speed on the outdoor unit. This function is convenient during night. To start OUTDOOR UNIT QUIET operation 1.
  • Page 151 SiBE12-816_D RA Indoor Unit 2.2.8 ECONO Operation ECONO Operation ECONO operation is a function which enables efficient operation by limiting the maximum power consumption value. This function is useful for cases in which attention should be paid to ensure a circuit breaker will not trip when the product runs alongside other appliances.
  • Page 152 RA Indoor Unit SiBE12-816_D 2.2.9 TIMER Operation TIMER Operation Timer functions are useful for automatically switching the air conditioner on or off at night or in the morning. You can also use OFF TIMER and ON TIMER in combination. To use OFF TIMER operation •...
  • Page 153 SiBE12-816_D RA Indoor Unit To use ON TIMER operation • Check that the clock is correct. If not, set the clock to the present time. 1. Press “ON TIMER button”. is displayed. blinks. Press “SELECT button” until the time setting reaches the point you like.
  • Page 154 RA Indoor Unit SiBE12-816_D 2.2.10 WEEKLY TIMER Operation WEEKLY TIMER Operation Up to 4 timer settings can be saved for each day of the week. It is convenient if the WEEKLY TIMER is set according to the family’s life style. Using in these cases of WEEKLY TIMER An example of WEEKLY TIMER settings is shown below.
  • Page 155 SiBE12-816_D RA Indoor Unit To use WEEKLY TIMER operation Setting mode • Make sure the day of the week and time are set. If not, set the day of the week and time. Program 1 Program 2 Program 3 Program 4 [Monday] 25˚C 27˚C...
  • Page 156 RA Indoor Unit SiBE12-816_D WEEKLY TIMER Operation Press “SELECT button” to select the desired temperature. • The temperature can be set between 10˚C and 32˚C. Cooling: The unit operates at 18˚C even if it is set at 10 to 17˚C. Heating: The unit operates at 30˚C even if it is set at 31 to 32˚C.
  • Page 157 SiBE12-816_D RA Indoor Unit Copy mode • A reservation made once can be copied another day of the week. The whole reservation of the selected day of the week will be copied. Program 1 Program 2 Program 3 Program 4 [Monday] 25˚C 27˚C...
  • Page 158 RA Indoor Unit SiBE12-816_D WEEKLY TIMER Operation Confirming a reservation • The reservation can be confirmed. Press “ button”. • The day of the week and the reservation number of the current day will be displayed. Press “SELECT button” to select the day of the week and the reservation number to be confirmed.
  • Page 159 SiBE12-816_D RA Indoor Unit 2.2.11 Note for Multi System Note for Multi System 〈〈 〉〉 What is a “Multi System”? This system has one outdoor unit connected to multiple indoor units. Outdoor room B unit Selecting the operation mode Living When more than one indoor unit is operating, priority room A is given to the first unit that was turned on.

  • Page 160: Ftxg-E, Ctxg-E, Flk(X)S, Fdk(X)S Series

    RA Indoor Unit SiBE12-816_D FTXG-E, CTXG-E, FLK(X)S, FDK(X)S Series - ARC433B41, B67, B68, B69, B76 2.3.1 Manual Contents and Reference Page Floor/Ceiling Wall Mounted Type Duct Connected Type Suspended Dual Type Model Series FTXG25/35EV1BW(S) FDK(X)S25/35EAVMB FLK(X)S25-50BAVMB CTXG50EV1BW(S) FDK(X)S50CVMB Read Before Operation Remote Controller Operation AUTO ·...
  • Page 161 SiBE12-816_D RA Indoor Unit 2.3.2 Remote Controller FTXG25/35EV1BW(S), CTXG50EV1BW(S) Remote Controller < ARC433B41 > 1. Signal transmitter: 8. QUIET button: OUTDOOR UNIT QUIET operation • It sends signals to the indoor unit. 9. FAN setting button: 2. Display: • It selects the air flow rate setting. •...
  • Page 162 RA Indoor Unit SiBE12-816_D FLK(X)S25/35/50BAVMB Remote Controller < ARC433B67, B68 > 1. Signal transmitter: 7. MODE selector button: • It sends signals to the indoor unit. • It selects the operation mode. 2. Display: (AUTO/DRY/COOL/HEAT/FAN) • It displays the current settings. 8.
  • Page 163 SiBE12-816_D RA Indoor Unit FDK(X)S25/35EAVMB, FDK(X)S50CVMB Remote Controller < ARC433B69, B76 > 1. Signal transmitter: 7. MODE selector button: • It sends signals to the indoor unit. • It selects the operation mode. 2. Display: (AUTO/DRY/COOL/HEAT/FAN) • It displays the current settings. 8.
  • Page 164 RA Indoor Unit SiBE12-816_D 2.3.3 AUTO · DRY · COOL · HEAT · FAN Operation AUTO · DRY · COOL · HEAT · FAN Operation The air conditioner operates with the operation mode of your choice. From the next time on, the air conditioner will operate with the same operation mode.
  • Page 165 SiBE12-816_D RA Indoor Unit To change the air flow rate setting 5. Press “FAN setting button”. DRY mode AUTO or COOL or HEAT or FAN mode Five levels of air flow rate setting from “ ” to “ ” plus “ ”...

  • Page 166: Adjusting The Air Flow Direction

    RA Indoor Unit SiBE12-816_D 2.3.4 Adjusting the Airflow Direction FTXG25/35EV1BW(S), CTXG50EV1BW(S) Adjusting the Air Flow Direction You can adjust the air flow direction to increase your comfort. To adjust the horizontal blade (flap) 1. Press “SWING button ”. • “ ”...
  • Page 167 SiBE12-816_D RA Indoor Unit To start COMFORT AIRFLOW operation 5. Press “COMFORT AIRFLOW button”. • The flap orientation will change, preventing air from blowing directly on the occupants of the room. • “ ” is displayed on the LCD. <COOL/DRY> The flap will go up. <HEAT>...
  • Page 168 RA Indoor Unit SiBE12-816_D FLK(X)S25/35/50BAVMB Adjusting the Airflow Direction You can adjust the air flow direction to increase your comfort. To adjust the horizontal blade (flap) 1. Press “SWING button”. • “ ” is displayed on the LCD and the flaps will begin to swing.
  • Page 169 SiBE12-816_D RA Indoor Unit To adjust the vertical blades (louvers) • When adjusting the louver, use a robust and stable stool and watch your steps carefully. Hold the knob and move the louvers. (You will find a knob on the left side and the right side blades.) Notes on flap and louvers angles.
  • Page 170 RA Indoor Unit SiBE12-816_D 2.3.5 POWERFUL Operation POWERFUL Operation POWERFUL operation quickly maximizes the cooling (heating) effect in any operation mode. You can get the maximum capacity. To start POWERFUL operation 1. Press “POWERFUL button”. • POWERFUL operation ends in 20 minutes. Then the system automatically operates again with the settings which were used before POWERFUL operation.
  • Page 171 SiBE12-816_D RA Indoor Unit 2.3.6 OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET operation lowers the noise level of the outdoor unit by changing the frequency and fan speed on the outdoor unit. This function is convenient during night. To start OUTDOOR UNIT QUIET operation 1.
  • Page 172 RA Indoor Unit SiBE12-816_D 2.3.7 HOME LEAVE Operation HOME LEAVE Operation HOME LEAVE operation is a function which allows you to record your preferred temperature and air flow rate settings. To start HOME LEAVE operation 1. Press “HOME LEAVE button”. •...
  • Page 173 SiBE12-816_D RA Indoor Unit What’s the HOME LEAVE operation? Is there a set temperature and air flow rate which is most comfortable, a set temperature and air flow rate which you use the most? HOME LEAVE operation is a function that allows you to record your favorite set temperature and air flow rate.
  • Page 174 RA Indoor Unit SiBE12-816_D 2.3.8 INTELLIGENT EYE Operation INTELLIGENT EYE Operation “INTELLIGENT EYE” is the infrared sensor which detects the human movement. To start INTELLIGENT EYE operation 1. Press “SENSOR button”. • “ ” is displayed on the LCD. To cancel the INTELLIGENT EYE operation 1, 2...
  • Page 175 SiBE12-816_D RA Indoor Unit “INTELLIGENT EYE” is useful for Energy Saving Energy saving operation • Change the temperature –2°C in heating / +2°C in cooling / +2°C in dry mode from set temperature. • Decrease the air flow rate slightly in fan operation. (In FAN mode only) Notes on “INTELLIGENT EYE”...
  • Page 176 RA Indoor Unit SiBE12-816_D 2.3.9 TIMER Operation TIMER Operation Timer functions are useful for automatically switching the air conditioner on or off at night or in the morning. You can also use OFF TIMER and ON TIMER in combination. To use OFF TIMER operation •...
  • Page 177 SiBE12-816_D RA Indoor Unit To use ON TIMER operation • Check that the clock is correct. If not, set the clock to the present time. 1. Press “ON TIMER button”. is displayed. blinks. 2. Press “TIMER Setting button” until the time setting reaches the point you like.
  • Page 178 RA Indoor Unit SiBE12-816_D 2.3.10 Note for Multi System Note for Multi System 〈〈 〉〉 What is a “Multi System”? This system has one outdoor unit connected to multiple indoor units. Outdoor room B unit Selecting the Operation Mode Living When more than one indoor unit is operating, priority is room A given to the first unit that was turned on.

  • Page 179: Sa Indoor Unit - Ffq Series

    SiBE12-816_D SA Indoor Unit - FFQ Series 3. SA Indoor Unit - FFQ Series BRC1D528 23 7 Operation Manual...
  • Page 180 SA Indoor Unit - FFQ Series SiBE12-816_D Start Operation Manual...
  • Page 181 SiBE12-816_D SA Indoor Unit - FFQ Series BRC1D528 Remote controller Operation manual 1. Features and functions THANK YOU FOR PURCHASING THIS The BRC1D528 is a state of the art remote controller CONTROLLER. READ MANUAL that offers full control over your installation. ATTENTIVELY BEFORE USING...
  • Page 182 SA Indoor Unit - FFQ Series SiBE12-816_D LEAVE HOME AIR CLEANING ICON The leave home function prevents the room This icon indicates that the air cleaning unit (option) is temperature from dropping when the occupants are operational. out for a longer period. If the room temperature drops below 10°C, heating is started automatically.
  • Page 183 SiBE12-816_D SA Indoor Unit - FFQ Series MAXTEMPERATURE IMUM SET NOT AVAILABLE maximum temperature indicates is displayed whenever a non-installed option maximum set temperature when in limit operation. is addressed or a function is not available. MINIMUM SET TEMPERATURE FAN SPEED ICON The minimum set temperature indicates the minimum This icon indicates the set fan speed.
  • Page 184 SA Indoor Unit - FFQ Series SiBE12-816_D SCHEDULE TIMER BUTTON AIR FILTER CLEANING TIME ICON RESET BUTTON This button enables or disables the schedule timer. This button is used to reset the air filter cleaning time TIME ADJUST BUTTON icon. These buttons are used to adjust the clock or, when in 3.
  • Page 185 SiBE12-816_D SA Indoor Unit - FFQ Series 4. Description of the operation modes Defrost (heat pump types only) In heating operation, freezing of the outdoor heat FAN ONLY OPERATION exchanger may occur. If so, the heating capacity of In this mode, air only circulates without heating or the system lowers and the system goes into defrost cooling.
  • Page 186 SA Indoor Unit - FFQ Series SiBE12-816_D Use the button to select the desired operation AUTOMATIC OPERATION mode. User adjustable parameters: • Setpoint temperature, use the & Fan only operation buttons, Dry operation • Fan speed, use the button, Automatic operation •...
  • Page 187 SiBE12-816_D SA Indoor Unit - FFQ Series ADDITIONAL FEATURES OF THE CONTROLLER NOTE The schedule timer overrules the LEAVE HOME button, only use the button to enable or disable the schedule timer. The Press buttons schedule timer is enabled when the simultaneously to enable the LEAVE HOME function.
  • Page 188 SA Indoor Unit - FFQ Series SiBE12-816_D What can the schedule timer do? • switch off the installation (the schedule timer The concept of the schedule timer is simple, remains enabled and reactivates the straightforward though powerful. installation as programmed); the operation The schedule timer can order 3 actions: lamp will turn off, switch on the installation at a scheduled time, in...
  • Page 189 SiBE12-816_D SA Indoor Unit - FFQ Series button is used to exit browsing at once Continue pressing the button until the day of the (without having to scroll through all programmed week indicator displays the current day (not blinking), actions). you have now quit browsing.
  • Page 190 SA Indoor Unit - FFQ Series SiBE12-816_D Programmed actions might overlap; due to the "last Getting started command overrules" logic, the last scheduled Programming the schedule timer is flexible (you can command will rule. add, remove or alter programmed actions whenever required) and straightforward (programming steps are limited to a minimum).
  • Page 191 SiBE12-816_D SA Indoor Unit - FFQ Series Programming In this particular case, no actions have been programmed before, all schedule timer actions are idle. • Browse to Monday by pressing the button. THE SCHEDULE TIMER IS PROGRAMMED icon appears, will blink and one of FOR THE FIRST TIME icons might be displayed but all other fields remain blank, indicating that...
  • Page 192 SA Indoor Unit - FFQ Series SiBE12-816_D If the action and the corresponding time are correct, Program mode is quit and depending on the choice you can proceed to the second schedule timer action. made, the programmed actions are saved for Monday This is done by pressing the button, the data is (and possibly Tuesday).
  • Page 193 SiBE12-816_D SA Indoor Unit - FFQ Series 8. Troubleshooting I WANT TO DELETE ONE OR MORE PROGRAMMED ACTIONS The guidelines below might help to solve your Make sure you are not in program mode ( problem. If you cannot remedy the problem, consult blinking);...

  • Page 194: Brc7E530W/531W

    SA Indoor Unit - FFQ Series SiBE12-816_D BRC7E530W/531W COOL/HEAT CHANGEOVER REMOTE CONTROL SWITCH Operation Manual...

  • Page 195: Names And Functions

    SiBE12-816_D SA Indoor Unit - FFQ Series NAMES AND FUNCTIONS DISPLAY “ ” OF THE OPERATING (INSPECTION/ TEST OPERATION) SECTION (Fig. 1, 2) When the INSPECTION/TEST OPERATION BUTTON is pressed, the display shows the system mode is in. DISPLAY “ ”...
  • Page 196 SA Indoor Unit - FFQ Series SiBE12-816_D RECEIVER HANDLING FOR This receives the signals from the WIRELESS REMOTE remote controller. CONTROLLER OPERATING INDICATOR LAMP (Red) Precautions in handling remote controller This lamp stays lit while the air Direct the transmitting part of the remote conditioner runs.

  • Page 197: Operation Range

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

  • Page 198: Operation Procedure

    This system does not go into operation if • Operating procedure varies with heat the room temperature is below 16˚C. pump type and cooling only type. Contact your Daikin dealer to confirm your system type. ON/OFF • To protect the unit, turn on the main power switch 6 hours before operation.
  • Page 199 SiBE12-816_D SA Indoor Unit - FFQ Series • Hot air is circulated to warm the room. It FAN OPERATION...... “ ” will take some time from when the air conditioner is first started until the entire DRY OPERATION..... “ ” room becomes warm.
  • Page 200 UP AND DOWN DIRECTION flaps blow horizontally to • The movable limit of the flap is changeable. avoid blowing cold air Contact your Daikin dealer for details. directly on the occupants of the room.) NOTES • If you try cooling or programmed drying, while the flaps are facing downward, air flow direction may change unexpectedly.
  • Page 201 SiBE12-816_D SA Indoor Unit - FFQ Series NOTES TIMER MODE START/ • When the timer is programmed to stop the STOP system after 3 hours and start the system after 4 hours, the system will stop after 3 Press the TIMER MODE START/STOP hours and then 1 hour later the system will button several times and select the start.
  • Page 202 SA Indoor Unit - FFQ Series SiBE12-816_D For Heat recovery system When one BS unit is connected with several indoor units. Continuously press the OPERATION MODE SELECTOR button for 4 seconds. Outdoor unit The displays showing “ ” of all slave indoor unit connected to the same outdoor unit or BS unit BS unit flash.
  • Page 203 TROUBLE SPOTS NOTE I. EMERGENCY STOP • Contact your Daikin dealer in case of changing the combination or setting of When the air conditioner stops in emergency, group control and two remote controller the run lamp on the indoor unit starts blinking.
  • Page 204 SA Indoor Unit - FFQ Series SiBE12-816_D Press OPERATION MODE SELECTOR Press the INSPECTION/TEST button BUTTON to select the inspection mode “ ”. “ ” on the right-hand of the malfunction “ ” appears on display and blinks. “UNIT” code blinks. lights up.
  • Page 205 “1”) Notify and inform the model name and what the malfunction code indicates to your Daikin The system operates but it does not dealer. sufficiently cool or heat. • If the set temperature is not proper.

  • Page 206: Part 6 Service Diagnosis

    SiBE12-816_D Part 6 Service Diagnosis 1. Troubleshooting with LED ..............197 1.1 Indoor Unit....................197 1.2 Outdoor Unit ..................198 2. Problem Symptoms and Measures .............199 3. Service Check Function ..............200 3.1 RA Indoor Unit - F(C)TXG, FTXS, FVXS, FLK(X)S, FDK(X)S Series..................200 3.2 SA Indoor Unit - FFQ Series ..............209 4.
  • Page 207 SiBE12-816_D 7.11 Thermistor or Related Abnormality (Outdoor Unit).......247 7.12 Electrical Box Temperature Rise............249 7.13 Radiation Fin Temperature Rise ............250 7.14 Output Overcurrent Detection ..............252 7.15 Refrigerant Shortage ................254 7.16 Low-voltage Detection or Over-voltage Detection........256 7.17 Outdoor Unit PCB Abnormality or Signal Transmission Error ....257 7.18 Unspecified Voltage (between Indoor Unit and Outdoor Unit) / Anti-icing control in Other Room ............260 8.

  • Page 208: Troubleshooting With Led

    Troubleshooting with LED SiBE12-816_D 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 209: Outdoor Unit

    SiBE12-816_D Troubleshooting with LED BRC1D528 Operation lamp (red) (R14422) BRC7E530W/531W In case of wireless remote controller, a signal receiver PCB and a display PCB are installed on indoor unit. When the error occurs, the operation lamp on the display PCB blinks. Caution: When operation stops suddenly and the operation lamp blinks, it could be "operation mode conflict".

  • Page 210: Problem Symptoms And Measures

    Problem Symptoms and Measures SiBE12-816_D 2. Problem Symptoms and Measures Problem Symptom Check Item Details of Measure Reference Page None of the units operates. Check the power supply. Check if the rated voltage is supplied. — Check the type of the indoor units. Check if the indoor unit type is compatible with —...

  • Page 211: Service Check Function

    SiBE12-816_D Service Check Function 3. Service Check Function RA Indoor Unit - F(C)TXG, FTXS, FVXS, FLK(X)S, FDK(X)S Series 3.1.1 ARC466 Series Remote Controller 1. When the timer cancel button is held down for 5 seconds, “ 00 ” indication appears on the Check Method 1 temperature display section.
  • Page 212 Service Check Function SiBE12-816_D Check Method 2 1. Press the center of the Temp button and the Mode button at the same time. (R11669) “ 5C ” is displayed on the LCD. (R11821) 2. Select “ 5C ” (service check) with the Temp ▲ or ▼ button. 3.
  • Page 213 SiBE12-816_D Service Check Function 6. Press the Mode button. (R11672) The figure of the one’s place blinks. (R11673) 7. Press the Temp ▲ or ▼ button and change the figure until you hear the sound of “beep”. (R11671) 8. Diagnose by the sound. ★...
  • Page 214 Service Check Function SiBE12-816_D 3.1.2 ARC452 Series Remote Controller 1. When the timer cancel button is held down for 5 seconds, “ 00 ” indication appears on the Check Method 1 temperature display section. Timer cancel button < ARC452 Series > (R13820) 2.
  • Page 215 SiBE12-816_D Service Check Function Check Method 2 1. Press the 3 buttons (TEMP▲, TEMP▼, MODE) simultaneously to enter the diagnosis mode. (R8381) The figure of the ten’s place blinks. (R8382) 2. Press the TEMP ▲ or ▼ button and change the figure until you hear the sound of “beep” or “pi pi”.
  • Page 216 Service Check Function SiBE12-816_D 5. Press the TEMP▲ or ▼ button and change the figure until you hear the sound of “beep”. (R8383) 6. Diagnose by the sound. ★ “pi” : The figure of the ten’s place does not accord with the error code. ★...
  • Page 217 SiBE12-816_D Service Check Function 3.1.3 ARC433 Series Remote Controller 1. When the timer cancel button is held down for 5 seconds, “ 00 ” indication appears on the Check Method 1 temperature display section. Timer cancel button < ARC433 Series > (R14221) 2.
  • Page 218 Service Check Function SiBE12-816_D Check Method 2 1. Press the center of the TEMP button and the MODE button simultaneously to enter the diagnosis mode. (R4272) The figure of the ten’s place blinks. (R4273) 2. Press the TEMP ▲ or ▼ button and change the figure until you hear the sound of “beep” or “pi pi”.
  • Page 219 SiBE12-816_D Service Check Function 5. Press the TEMP▲ or ▼ button and change the figure until you hear the sound of “beep”. (R4277) 6. Diagnose by the sound. ★ “pi” : The figure of the ten’s place does not accord with the error code. ★...

  • Page 220: Sa Indoor Unit - Ffq Series

    Service Check Function SiBE12-816_D SA Indoor Unit - FFQ Series 3.2.1 Relations between Modes The following modes can be selected by using the [Inspection / Test] button on the remote controller. Press the [Inspection / Test] button for more than 4 seconds. Indoor unit settings can be made.
  • Page 221 SiBE12-816_D Service Check Function 3.2.3 BRC7E530W/531W 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 222 Service Check Function SiBE12-816_D Step Action Press the MODE button. The left “0” (upper digit) indication of the error code blinks. MODE button (R14394) Press the UP or DOWN button to change the error code upper digit until the receiver of the remote controller starts to beep.
  • Page 223 SiBE12-816_D Service Check Function Step Action Press the MODE button. The right “0” (lower digit) indication of the error code blinks. MODE button (R14396) Press the UP or DOWN button and change the error code lower digit until the receiver of the remote controller generates a continuous beep.

  • Page 224: Ra Indoor Unit - F(C)Txg, Ftxs, Fvxs, Flk(X)S

    Code Indication on Remote Controller SiBE12-816_D 4. Code Indication on Remote Controller RA Indoor Unit - F(C)TXG, FTXS, FVXS, FLK(X)S, FDK(X)S Series Error Codes Description Reference Page Normal condition — Indoor unit PCB abnormality Freeze-up protection control or heating peak-cut control AC motor (duct, floor / ceiling) Fan motor or related abnormality DC motor (wall, floor standing)

  • Page 225: Outdoor Unit

    SiBE12-816_D Code Indication on Remote Controller Outdoor Unit Reference Error Codes Description Page System Normal — U0★ 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...

  • Page 226: Troubleshooting For Ra Indoor Unit - F(C)Txg, Ftxs, Fvxs, Flk(X)S, Fdk(X)S Series

    Troubleshooting for RA Indoor Unit - F(C)TXG, FTXS, FVXS, FLK(X)S, FDK(X)S Series SiBE12-816_D 5. Troubleshooting for RA Indoor Unit - F(C)TXG, FTXS, FVXS, FLK(X)S, FDK(X)S Series Indoor Unit PCB Abnormality Remote Controller Display Method of The system checks if the circuit works properly within the microcomputer of the indoor unit. Malfunction Detection Malfunction...

  • Page 227: Freeze-Up Protection Control Or Heating Peak-Cut Control

    SiBE12-816_D Troubleshooting for RA Indoor Unit - F(C)TXG, FTXS, FVXS, FLK(X)S, FDK(X)S Series Freeze-up Protection Control or Heating Peak-cut Control Remote Controller Display Method of Freeze-up protection control During cooling operation, the freeze-up protection control (operation halt) is activated Malfunction according to the temperature detected by the indoor heat exchanger thermistor.
  • Page 228 Troubleshooting for RA Indoor Unit - F(C)TXG, FTXS, FVXS, FLK(X)S, FDK(X)S Series SiBE12-816_D 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.261 Is there any short circuit? Provide sufficient air passage.

  • Page 229: Fan Motor Or Related Abnormality

    SiBE12-816_D Troubleshooting for RA Indoor Unit - F(C)TXG, FTXS, FVXS, FLK(X)S, FDK(X)S Series Fan Motor or Related Abnormality 5.3.1 AC Motor (Duct Connected Type, Floor / Ceiling Suspended Dual Type) Remote Controller Display Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor operation.
  • Page 230 Troubleshooting for RA Indoor Unit - F(C)TXG, FTXS, FVXS, FLK(X)S, FDK(X)S Series SiBE12-816_D 5.3.2 DC Motor (Wall Mounted Type, Floor Standing Type) Remote Controller Display Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor operation.
  • Page 231 SiBE12-816_D Troubleshooting for RA Indoor Unit - F(C)TXG, FTXS, FVXS, FLK(X)S, FDK(X)S Series Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.02 Turn off the power supply Refer to P.262 and rotate the fan by hand.

  • Page 232: Thermistor Or Related Abnormality (Indoor Unit)

    Troubleshooting for RA Indoor Unit - F(C)TXG, FTXS, FVXS, FLK(X)S, FDK(X)S Series SiBE12-816_D Thermistor or Related Abnormality (Indoor Unit) C4 , C9 Remote Controller Display Method of The temperatures detected by the thermistors are used to determine thermistor errors. Malfunction Detection Malfunction The thermistor input is more than 4.96 V or less than 0.04 V during compressor operation.

  • Page 233: Front Panel Open / Close Fault (Ftxg, Ctxg)

    SiBE12-816_D Troubleshooting for RA Indoor Unit - F(C)TXG, FTXS, FVXS, FLK(X)S, FDK(X)S Series Front Panel Open / Close Fault (FTXG, CTXG) Remote Controller Display Method of Malfunction Detection Malfunction If the error repeats twice, the system is shut down. Decision Conditions Supposed Defective reduction motor...

  • Page 234: Troubleshooting For Sa Indoor Unit - Ffq Series

    Troubleshooting for SA Indoor Unit - FFQ Series SiBE12-816_D 6. Troubleshooting for SA Indoor Unit - FFQ Series Indoor Unit PCB Abnormality Remote Controller Display Method of The system checks the data from EEPROM. Malfunction Detection Malfunction When the data from the EEPROM is not received correctly Decision EEPROM (Electrically Erasable Programmable Read Only Memory): A memory chip that holds Conditions...

  • Page 235: Drain Water Level System Abnormality

    SiBE12-816_D Troubleshooting for SA Indoor Unit - FFQ Series Drain Water Level System Abnormality Remote Controller Display Method of The float switch detects error. Malfunction Detection Malfunction When the water level reaches its upper limit and when the float switch turns OFF Decision Conditions Supposed...
  • Page 236 Troubleshooting for SA Indoor Unit - FFQ Series SiBE12-816_D Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Is the drain pump connected to the Connect the drain pump. indoor unit PCB? Set to Does...

  • Page 237: Fan Motor Or Related Abnormality

    SiBE12-816_D Troubleshooting for SA Indoor Unit - FFQ Series Fan Motor or Related Abnormality Remote Controller Display Method of The signal from the fan motor detects abnormal fan speed. Malfunction Detection Malfunction When the fan rotations are not detected while the output voltage to the fan is at its maximum Decision Conditions Supposed...

  • Page 238: Drain System Abnormality

    Troubleshooting for SA Indoor Unit - FFQ Series SiBE12-816_D Drain System Abnormality Remote Controller Display Method of Water leakage is detected based on the float switch ON/OFF changeover while the compressor is not operating. Malfunction Detection Malfunction When the float switch changes from ON to OFF while the compressor is OFF Decision Conditions Supposed...

  • Page 239: Thermistor Or Related Abnormality

    SiBE12-816_D Troubleshooting for SA Indoor Unit - FFQ Series Thermistor or Related Abnormality Remote The table below describes the two thermistor abnormalities. Controller Error Description Display Defective indoor heat exchanger thermistor system Defective room temperature thermistor system Method of Malfunction detection is carried out by the temperature detected by thermistor. Malfunction Detection Malfunction...
  • Page 240 Troubleshooting for SA Indoor Unit - FFQ Series SiBE12-816_D Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check the connector connection. Is it connected properly? Correct the connection. Check the thermistor resistance.

  • Page 241: Remote Controller Thermistor Abnormality

    SiBE12-816_D Troubleshooting for SA Indoor Unit - FFQ Series Remote Controller Thermistor Abnormality Remote Controller Display Method of Even if remote controller thermistor is malfunctioning, the system can operate with the system thermistor. Malfunction Malfunction detection is carried out by the temperature detected by the remote controller Detection thermistor.

  • Page 242: Signal Transmission Error

    Troubleshooting for SA Indoor Unit - FFQ Series SiBE12-816_D Signal Transmission Error (between Indoor Unit and Remote Controller) Remote Controller Display Method of Microcomputer checks if transmission between indoor unit and remote controller is normal. Malfunction Detection Malfunction The error is generated when the micro-processor detects that the transmission between the Decision indoor unit and the remote controller is not normal over a certain amount of time.

  • Page 243: Signal Transmission Error

    SiBE12-816_D Troubleshooting for SA Indoor Unit - FFQ Series Signal Transmission Error (between MAIN Remote Controller and SUB Remote Controller) Remote Controller Display Method of In case of controlling with 2 remote controllers, check the system using micro-computer if signal transmission between indoor unit and remote controller (main and sub) is normal.

  • Page 244: Field Setting Abnormality

    Troubleshooting for SA Indoor Unit - FFQ Series SiBE12-816_D Field Setting Abnormality Remote Controller Display Method of Malfunction Detection Malfunction Incorrect field setting Decision Conditions Supposed Defective indoor unit PCB Defective outdoor unit PCB Causes Defective power supply PCB Indoor-outdoor, indoor-indoor unit transmission wiring Defective remote controller wiring Service Diagnosis...
  • Page 245 SiBE12-816_D Troubleshooting for SA Indoor Unit - FFQ Series Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Is the remote controller connected to Connect the remote controller one or more indoor correctly.

  • Page 246: Troubleshooting For Outdoor Unit

    Troubleshooting for Outdoor Unit SiBE12-816_D 7. Troubleshooting for Outdoor Unit Anti-icing Control for Indoor Unit Remote Controller Display Method of During cooling operation, indoor unit icing is detected by checking the temperatures sensed by the indoor heat exchanger thermistor and room temperature thermistor that are located in a Malfunction shut-down room.
  • Page 247 SiBE12-816_D Troubleshooting for Outdoor Unit Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.01 Refer to P.261 Check the wiring and piping. Check No.12 Wrong wiring or Activate the wiring error check piping? Refer to P.263...

  • Page 248: Ol Activation (Compressor Overload)

    Troubleshooting for Outdoor Unit SiBE12-816_D OL Activation (Compressor Overload) Remote Controller Display Method of A compressor overload is detected through compressor OL. Malfunction Detection Malfunction If the error repeats twice, the system is shut down. Reset condition: Continuous run for about 60 minutes without any other error Decision ∗...

  • Page 249: Compressor Lock

    SiBE12-816_D Troubleshooting for Outdoor Unit Compressor Lock Remote Controller Display Method of A compressor lock is detected by checking the compressor running condition through the Malfunction position detection circuit. Detection Malfunction Judging from the current waveform generated when high-frequency voltage is applied to the compressor.

  • Page 250: Dc Fan Lock

    Troubleshooting for Outdoor Unit SiBE12-816_D DC Fan Lock Remote Controller Display Method of An error is determined with the high-voltage fan motor rotation speed detected by the Hall IC. Malfunction Detection Malfunction The fan does not start in 60 seconds even when the fan motor is running. If the error repeats, the system is shut down.

  • Page 251: Input Overcurrent Detection

    SiBE12-816_D Troubleshooting for Outdoor Unit Input Overcurrent Detection Remote Controller Display Method of Detected by checking the input current value Malfunction Detection Malfunction The input current is at a certain value (depending on the condition) for 2.5 seconds. The compressor halts if the error occurs, and restarts automatically after 3-minute standby. Decision Conditions Supposed...

  • Page 252: Discharge Pipe Temperature Control

    Troubleshooting for Outdoor Unit SiBE12-816_D Discharge Pipe Temperature Control Remote Controller Display Method of Detected by the discharge pipe thermistor Malfunction Detection Malfunction If the temperature detected by the discharge pipe thermistor rises above A °C, the compressor stops. Decision The error is cleared when the discharge pipe temperature is dropped below B °C.

  • Page 253: High Pressure Control In Cooling

    SiBE12-816_D Troubleshooting for Outdoor Unit High Pressure Control in Cooling Remote Controller Display Method of High-pressure control (operation halt, frequency drop, etc.) is activated in cooling mode if the Malfunction temperature sensed by the outdoor heat exchanger thermistor exceeds the limit. Detection Malfunction The temperature sensed by the outdoor heat exchanger thermistor rises above about...

  • Page 254: Compressor Sensor System Abnormality

    Troubleshooting for Outdoor Unit SiBE12-816_D Compressor Sensor System Abnormality Remote Controller Display Method of Fault condition is identified by DC current which is detected before compressor startup. Malfunction Detection Malfunction 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 255: Position Sensor Abnormality

    SiBE12-816_D Troubleshooting for Outdoor Unit Position Sensor Abnormality Remote Controller Display Method of A compressor startup failure is detected by checking the compressor running condition through the position detection circuit. Malfunction Detection Malfunction If the error repeats 16 times, the system is shut down. Reset condition: Continuous run for about 11 minutes without any other error Decision Conditions...
  • Page 256 Troubleshooting for Outdoor Unit SiBE12-816_D Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.15 Turn off the power. Refer to P.266 Check the power supply voltage. Check No.18 Refer to P.269 Voltage as rated? Correct the power supply.

  • Page 257: Dc Voltage / Current Sensor Abnormality

    SiBE12-816_D Troubleshooting for Outdoor Unit 7.10 DC Voltage / Current Sensor Abnormality Remote Controller Display Method of DC voltage or DC current sensor abnormality is identified based on the compressor running Malfunction frequency and the input current. Detection Malfunction The compressor running frequency is above 52 Hz. If the error repeats 4 times, the system is shut down.

  • Page 258: Thermistor Or Related Abnormality (Outdoor Unit)

    Troubleshooting for Outdoor Unit SiBE12-816_D 7.11 Thermistor or Related Abnormality (Outdoor Unit) H9 , J3 , J6 , J8 , J9 , P4 Remote Controller Display Method of This type of error is detected by checking the thermistor input voltage to the microcomputer. Malfunction A thermistor error is detected by checking the temperature sensed by each thermistor.
  • Page 259 SiBE12-816_D 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.261 Turn on the power again.

  • Page 260: Electrical Box Temperature Rise

    Troubleshooting for Outdoor Unit SiBE12-816_D 7.12 Electrical Box Temperature Rise Remote Controller Display Method of An electrical box temperature rise is detected by checking the radiation fin thermistor with the Malfunction compressor off. Detection Malfunction With the compressor off, the radiation fin temperature is above A °C. The error is cleared when the temperature drops below B °C.

  • Page 261: Radiation Fin Temperature Rise

    SiBE12-816_D Troubleshooting for Outdoor Unit 7.13 Radiation Fin Temperature Rise Remote Controller Display Method of A radiation fin temperature rise is detected by checking the radiation fin temperature with the Malfunction compressor on. Detection Malfunction The radiation fin temperature with the compressor on is above A °C. The error is cleared when the temperature drops below B °C Decision Conditions...
  • Page 262 Troubleshooting for Outdoor Unit SiBE12-816_D Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.17 (Precaution before turning on the power again) Refer to P.269 Make sure the power has been off for at least 30 seconds. Check No.19 Turn off the power and turn it on again...

  • Page 263: Output Overcurrent Detection

    SiBE12-816_D Troubleshooting for Outdoor Unit 7.14 Output Overcurrent Detection Remote Controller Display Method of An output overcurrent is detected by checking the current that flows in the inverter DC section. Malfunction Detection Malfunction A position signal error occurs while the compressor is running. A speed error occurs while the compressor is running.
  • Page 264 Troubleshooting for Outdoor Unit SiBE12-816_D 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 signal may result from wrong internal wiring. If the wires have been disconnected and reconnected and the system is interrupted by an output overcurrent, take the Refer to P.266 following procedure.

  • Page 265: Refrigerant Shortage

    SiBE12-816_D Troubleshooting for Outdoor Unit 7.15 Refrigerant Shortage Remote Controller Display Method of Refrigerant shortage detection I : Malfunction Refrigerant shortage is detected by checking the input current value and the compressor output frequency. If the refrigerant is short, the input current is smaller than the normal value. Detection Refrigerant shortage detection II : Refrigerant shortage is detected by checking the discharge pipe temperature and the opening of...
  • Page 266 Troubleshooting for Outdoor Unit SiBE12-816_D 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.261 Any thermistor Replace them in position. disconnected? ∗ Discharge pipe thermistor ∗...

  • Page 267: Low-Voltage Detection Or Over-Voltage Detection

    SiBE12-816_D Troubleshooting for Outdoor Unit 7.16 Low-voltage Detection or Over-voltage Detection Remote Controller Display Method of Low-voltage detection: Malfunction An abnormal voltage drop is detected by the DC voltage detection circuit. Detection Over-voltage detection: An abnormal voltage rise is detected by the over-voltage detection circuit. Malfunction Low-voltage detection: Decision...

  • Page 268: Outdoor Unit Pcb Abnormality Or Signal Transmission Error

    Troubleshooting for Outdoor Unit SiBE12-816_D 7.17 Outdoor Unit PCB Abnormality or Signal Transmission Error Remote Controller Display Method of Detection within the program of the microcomputer Indoor-outdoor unit signal transmission performance Malfunction Presence or absence of zero-cross signal Detection Malfunction The program of the microcomputer is in bad running order.
  • Page 269 SiBE12-816_D Troubleshooting for Outdoor Unit Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check indoor unit also, because a communication circuit fault may be caused by the problem related to the indoor unit. Check the supply voltage.
  • Page 270 Troubleshooting for Outdoor Unit SiBE12-816_D From the previous page Check No.11 Refer to P.262 Check the grounding. Does the LED A turn off? Grounded? Carry out grounding work. The cause seems to be an Check No. 11 external factor other than Check the power supply failure of the outdoor unit waveform.

  • Page 271: Unspecified Voltage (Between Indoor Unit And Outdoor Unit) / Anti-Icing Control In Other Room

    SiBE12-816_D Troubleshooting for Outdoor Unit 7.18 Unspecified Voltage (between Indoor Unit and Outdoor Unit) / Anti-icing control in Other Room UA , UH Remote Controller Display Method of A wrong connection is detected by checking the combination of indoor and outdoor units on the microcomputer.

  • Page 272: Check

    Check SiBE12-816_D 8. Check Thermistor Resistance Check Check No.01 Disconnect the connectors of the thermistors from the PCB, and measure the resistance of each thermistor using tester. The relationship between normal temperature and resistance is shown in the graph and the table below.

  • Page 273: Fan Motor Connector Output Check

    SiBE12-816_D Check Fan Motor Connector Output Check Check No.02 1. Check the connection of connector. 2. Check motor power supply voltage output (pins 4 - 7). 3. Check motor control voltage (pins 4 - 3). 4. Check rotation command voltage output (pins 4 - 2). 5.

  • Page 274: Electronic Expansion Valve Check

    Check SiBE12-816_D Electronic Expansion Valve Check Check No.12 Conduct the followings to check the electronic expansion valve (EV). 1. Check to see if the EV connector is correctly inserted in the PCB. Match the EV unit number and the connector number. 2.

  • Page 275: Four Way Valve Performance Check

    SiBE12-816_D Check Four Way Valve Performance Check Check No.13 Turn off the power and turn it on again. ∗ Four way valve coil Start heating operation. Cooling / Dry : No continuity Heating : Continuity voltage at 220 - 240 Replace the outdoor unit VAC with compressor PCB.

  • Page 276: Inverter Unit Refrigerant System Check

    Check SiBE12-816_D Inverter Unit Refrigerant System Check Check No.14 Refrigerant system check Is the discharge pipe thermistor disconnected Place the thermistor. from the holder? Check for refrigerant leakage. See the section on refrigerant shortage detection. Replace the refrigerant. (R8380) Service Diagnosis...

  • Page 277: Inverter Checker" Check

    SiBE12-816_D Check “Inverter Checker” Check Check No.15 Characteristics If abnormal stop occurs due to compressor startup failure or overcurrent output when using inverter unit, it is difficult to judge whether it is caused by the compressor failure or other failure (control PCB, power module, etc.).
  • Page 278 Check SiBE12-816_D FTXG-E, CTXG-E, FTXS, FVXS, FLK(X)S, FDK(X)S Series 1) Turn the power 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 279: Rotating Pulse Input On The Outdoor Unit Pcb Check

    SiBE12-816_D Check 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. Check that the voltage between the pins 4 - 7 is 320 VDC. 3.

  • Page 280: Installation Condition Check

    Check SiBE12-816_D 8.10 Installation Condition Check Check No.17 Installation condition check Check the allowable dimensions Change the installation of the air suction and location or direction. discharge area. Does the discharged air from other outdoor unit cause an Change the installation increase of the suction location or direction.

  • Page 281: Outdoor Unit Fan System Check

    SiBE12-816_D Check 8.12 Outdoor Unit Fan System Check Check No.19 DC motor Check the outdoor unit fan system. Fan motor lead wire connector Outdoor unit fan running? Reconnect the connector. disconnected? Outdoor unit fan system Go to Check No. 15. functioning.

  • Page 282: Power Module Check

    Check SiBE12-816_D 8.14 Power Module Check Check No.22 Note: Check to make sure that the voltage between (+) and (–) of the diode bridge (DB1) 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 283: Part 7 Removal Procedure

    SiBE12-816_D Part 7 Removal Procedure 1. Outdoor Unit..................273 1.1 Removal of Outer Panels ..............273 1.2 Removal of Electrical Box ..............275 1.3 Removal of PCB...................280 1.4 Removal of Sound Blankets ..............285 1.5 Removal of Outdoor Fan / Fan Motor...........287 1.6 Removal of Thermistors ...............290 1.7 Removal of Four Way Valve / Electronic Expansion Valves ....292 1.8 Removal of Compressor...............295 Removal Procedure...

  • Page 284: Outdoor Unit

    Outdoor Unit SiBE12-816_D 1. Outdoor Unit Note: The illustrations are for heat pump models as representative. Removal of Outer Panels Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points...
  • Page 285 SiBE12-816_D Outdoor Unit Step Procedure Points Remove the 4 screws When reassembling, make and remove the sure to fit the 4 hooks. discharge grille. (R12767) Remove the 2 screws and remove the stop valve cover. Stop valve cover (R7699) When reassembling, make sure to fit the 4 hooks.

  • Page 286: Removal Of Electrical Box

    Outdoor Unit SiBE12-816_D Removal of Electrical Box Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Disconnect the When reassembling, fasten connecting wires. the wires with screws on the terminal board.
  • Page 287 SiBE12-816_D Outdoor Unit Step Procedure Points Disconnect the connector for the fan [S70] motor [S70]. (R12529) Release the fan motor lead wire. (R7579) Disconnect the [S91]: gas pipe thermistor connector for the gas (white) [S92] [S91] pipe thermistor [S91] [S92]: liquid pipe thermistor and for the liquid pipe (red) thermistor [S92].
  • Page 288 Outdoor Unit SiBE12-816_D Step Procedure Points Disconnect the [S20]: electronic expansion connectors [S20], valve coil for room A [S20] [S21] [S80] [S21], [S80]. (white) [S21]: electronic expansion valve coil for room B (red) [S80]: four way valve coil (R12532) Disconnect the relay connector for the compressor.
  • Page 289 SiBE12-816_D Outdoor Unit Step Procedure Points Disconnect the [S90]: thermistors (outdoor [S90] connector for the temperature, outdoor thermistors [S90]. heat exchanger, discharge pipe) (R7587) Detach the clamp for the thermistors from the electrical box. Clamp (R12771) Remove the screw on the right side of the electrical box.
  • Page 290 Outdoor Unit SiBE12-816_D Step Procedure Points Lift and remove the electrical box. (R12537) Removal Procedure...

  • Page 291: Removal Of Pcb

    SiBE12-816_D Outdoor Unit Removal of PCB Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the screw and Preparation Electrical box cover remove the electrical Remove the panels box cover.
  • Page 292 Outdoor Unit SiBE12-816_D Step Procedure Points Release the earth wire from the hook. (R12541) Remove the 2 screws Temperature fuse harness and detach the clip to remove the radiation shield plate. Clip Radiation shield plate (R7600) Compressor harness Clip Hole (R7596) (R12565) Removal Procedure...
  • Page 293 SiBE12-816_D Outdoor Unit Step Procedure Points Cut the clamp and release the wire harnesses. (R7597) Remove the 7 screws in total to remove the PCB. (R7598) (R7602) Lift up the back side of When reassembling, make the electrical box sure that the hooks of the slightly and unfasten electrical box are placed on the hooks of the front.
  • Page 294 Outdoor Unit SiBE12-816_D Step Procedure Points Release the lead wires from the hooks and remove the terminal Terminal board boards. (R7604) Lift up the PCB. (R7605) Remove the PCB. (R7606) Removal Procedure...
  • Page 295 SiBE12-816_D Outdoor Unit Step Procedure Points Disconnect the Refer to page 51 for detail. connectors from the [S70] [S40] [S92] [S91] [S20] [S21] terminal board. [S90] [S80] (R12566) ★ This illustration is for 40 class model as representative. [S20]: electronic expansion valve coil for room A [S21]: electronic expansion valve coil for room B...

  • Page 296: Removal Of Sound Blankets

    Outdoor Unit SiBE12-816_D Removal of Sound Blankets Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the right side Preparation panel. Remove the panels according to the “Removal of Remove the 6 screws Outer Panels”.
  • Page 297 SiBE12-816_D Outdoor Unit Step Procedure Points 3. Remove the sound blankets. Release the strings, open the sound blanket (outer) and pull it out. Sound blanket (outer) (R7613) Remove the sound Since the piping ports are blanket (top). torn easily, remove the sound blanket carefully.

  • Page 298: Removal Of Outdoor Fan / Fan Motor

    Outdoor Unit SiBE12-816_D Removal of Outdoor Fan / Fan Motor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the outdoor fan. Nut size: M6 Remove the washer fitted nut.
  • Page 299 SiBE12-816_D Outdoor Unit Step Procedure Points Release the fan motor lead wire. (R7579) Remove the screw of the fan motor fixing frame. Fan motor fixing frame (R7623) Remove the fan motor fixing frame. (R7624) (R7625) Removal Procedure...
  • Page 300 Outdoor Unit SiBE12-816_D Step Procedure Points Turn the fan motor fixing frame backward and open the 2 hooks of the fan motor lead wire. (R7626) Release the fan motor When reassembling, put the lead wire. fan motor lead wire through the back of the fan motor so as not to be entangled with the outdoor fan.

  • Page 301: Removal Of Thermistors

    SiBE12-816_D Outdoor Unit Removal of Thermistors Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the assembly of Be careful not to lose the clip thermistors.
  • Page 302 Outdoor Unit SiBE12-816_D Step Procedure Points Cut the clamp. (R7634) Peel the putty and remove the thermistors. [S91] : gas pipe thermistor Thermistor (Liquid) room A (black) Room A room B (gray) Thermistor (Gas) [S92] : liquid pipe thermistor Room A room A (black) room B (gray) Thermistor (Liquid)

  • Page 303: Removal Of Four Way Valve / Electronic Expansion Valves

    SiBE12-816_D Outdoor Unit Removal of Four Way Valve / Electronic Expansion Valves Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the peripheries. Preparation Remove the sound blankets.
  • Page 304 Outdoor Unit SiBE12-816_D Step Procedure Points Before working, make sure that the refrigerant Warning gas is empty in the circuit. Be careful not to get yourself Be sure to apply nitrogen burnt with the pipes and other replacement when parts that are heated by the heating up the brazed gas brazing machine.
  • Page 305 SiBE12-816_D Outdoor Unit Step Procedure Points Heat up the brazed Note: parts. Do not use a metal saw for Pull the pipe with pliers cutting pipes by all means and disconnect. because the sawdust comes into the circuit. When withdrawing the pipes, be careful not to pinch them firmly with pliers.

  • Page 306: Removal Of Compressor

    Outdoor Unit SiBE12-816_D Removal of Compressor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the terminal Terminal cover cover. (R7637) Disconnect the compressor terminals. Red (U) Yellow (V) Blue (W)
  • Page 307 SiBE12-816_D Outdoor Unit Step Procedure Points Remove the 2 nuts of the compressor. Warning Be careful not to get yourself burnt with the pipes and other parts that are heated by the gas brazing machine. Warning If the refrigerant gas leaks during work, ventilate the room.

  • Page 308: Part 8 Trial Operation And Field Settings

    SiBE12-816_D Part 8 Trial Operation and Field Settings 1. Pump Down Operation................298 2. Forced Cooling Operation ..............299 3. Trial Operation ..................300 3.1 RA Indoor Unit - F(C)TXG, FTXS, FVXS, FLK(X)S, FDK(X)S Series..................300 3.2 SA Indoor Unit - FFQ Series ..............302 4.

  • Page 309: Pump Down Operation

    SiBE12-816_D Pump Down Operation 1. Pump Down Operation Outline In order to protect the environment, be sure to conduct pump down operation when relocating or disposing the unit. Detail 1) Remove the valve caps from the liquid stop valve and the gas stop valve at the pipes for rooms A and B.

  • Page 310: Forced Cooling Operation

    Forced Cooling Operation SiBE12-816_D 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 311: Trial Operation

    SiBE12-816_D Trial Operation 3. Trial Operation RA Indoor Unit - F(C)TXG, FTXS, FVXS, FLK(X)S, FDK(X)S Series Outline 1. Measure the supply voltage and make sure that it falls in the specified range. 2. Trial operation should be carried out in either cooling or heating mode. 3.
  • Page 312 Trial Operation SiBE12-816_D 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 313: Sa Indoor Unit - Ffq Series

    SiBE12-816_D Trial Operation 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 mode or use trial operation mode. Go through the following checklist: Checkpoints Cautions or warnings...

  • Page 314: Field Settings

    Field Settings SiBE12-816_D 4. Field Settings RA Indoor Unit - F(C)TXG, FTXS, FVXS, FLK(X)S, FDK(X)S Series 4.1.1 Model Type Setting <ARC452A1, ARC452A3> This remote controller is common to the heat pump model and cooling only model. Use the DIP switch on the remote controller to set the heat pump model or cooling only model. Make the setting as shown in the illustration.
  • Page 315 SiBE12-816_D Field Settings FTXS-G, FTXS-J Series ADDRESS ADDRESS EXIST (R12216) < Floor Standing Type> 1) Remove the front grille. 2) Lift the sensor PCB fixing plate and remove the front shield plate. 3) Disconnect the connectors [S1] [S41] [S42]. 4) Remove the electric box (1 screw). 5) Pull out the indoor heat exchanger thermistor.
  • Page 316 Field Settings SiBE12-816_D < Floor / Ceiling Suspended Dual Type > Cut the jumper JA on PCB. ADDRESS JA EXIST (R11732) < Duct Connected Type > Cut the jumper JA on PCB. ADDRESS : JA EXIST ADDRESS (R10276) Wireless Remote (1) Remove the cover and take it off.

  • Page 317: Jumper And Switch Settings

    SiBE12-816_D 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 318: Sa Indoor Unit - Ffq Series

    Field Settings SiBE12-816_D 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 controller Mode No.
  • Page 319 SiBE12-816_D Field Settings Wireless remote controller UP button Mode No. Field setting mode DOWN button RESERVE button First code No. MODE button Second code No. [Inspection / Test] button (R14426) To set the field settings, you have to change: Mode No. First code No.
  • Page 320 Field Settings SiBE12-816_D 4.2.2 Overview of the Field Settings First Second Code No. Mode Code Description of setting Ultra Approx. Approx. longlife 10,000 5,000 filter hrs. hrs. Filter cleaning — — sign interval Approx. Approx. Longlife 2,500 1,250 filter hrs. hrs.
  • Page 321 SiBE12-816_D Field Settings 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 322 Field Settings SiBE12-816_D 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 323 SiBE12-816_D Field Settings Wireless Remote 1. Hold down the “ ” button and the “ ” button at the same time for at least 4 seconds to enter the field setting mode. (“SETTING” is indicated on the display). Controller 2. Press the “ ”...
  • Page 324 Field Settings SiBE12-816_D 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 325: Outdoor Unit

    SiBE12-816_D Field Settings Outdoor Unit 4.3.1 Jumper Settings Jumper Function When connected When cut (on outdoor unit PCB) (factory set) ECONO mode ECONO operation is ECONO operation is disabled. prohibition setting available. Maximum power Standard control The power input is limited to input limitation 1700 W.

  • Page 326: Application Of Silicon Grease To A Power Transistor And A Diode Bridge

    Application of Silicon Grease to a Power Transistor and a Diode Bridge SiBE12-816_D 5. Application of Silicon Grease to a Power Transistor and a Diode Bridge Applicable All outdoor units using inverter type compressor for room air conditioner. Models When the printed circuit board (PCB) of an outdoor unit is replaced, it is required that silicon grease (*1) is certainly applied to the heat radiation part (the contact point to the radiation fin) of the power transistor and diode bridge.

  • Page 327: Part 9 Appendix

    SiBE12-816_D Part 9 Appendix 1. Piping Diagrams..................317 1.1 Indoor Unit....................317 1.2 Outdoor Unit ..................321 2. Wiring Diagrams..................323 2.1 Indoor Unit....................323 2.2 Outdoor Unit ..................327 Appendix...

  • Page 328: Piping Diagrams

    Piping Diagrams SiBE12-816_D 1. Piping Diagrams Indoor Unit 1.1.1 Wall Mounted Type FTXG25/35EV1BW(S) CTXG50EV1BW(S) INDOOR UNIT INDOOR UNIT HEAT EXCHANGER 7.0CuT HEAT EXCHANGER 7.0CuT 7.0CuT 7.0CuT THERMISTOR 7.0CuT 7.0CuT ON HEAT EXCH THERMISTOR 7.0CuT ON HEAT EXCH. 7.0CuT CROSS FLOW FAN CROSS FLOW FAN FIELD PIPING FIELD PIPING...
  • Page 329 SiBE12-816_D Piping Diagrams FTXS20/25/35/42G2V1B FTXS50G2V1B FTXS20/25/35/42J2V1B FTXS50J2V1B INDOOR UNIT INDOOR UNIT 6.4CuT 6.4CuT HEAT EXCHANGER HEAT EXCHANGER THERMISTOR THERMISTOR CROSS FLOW FAN CROSS FLOW FAN ON HEAT EXCH. ON HEAT EXCH. FIELD PIPING FIELD PIPING 6.4CuT 6.4CuT FAN MOTOR FAN MOTOR FIELD PIPING FIELD PIPING 12.7CuT...
  • Page 330 Piping Diagrams SiBE12-816_D 1.1.3 Floor / Ceiling Suspended Dual Type FLKS25/35BAVMB FLKS50BAVMB INDOOR UNIT INDOOR UNIT ( 9.5CuT ) ( 6.4CuT ) HEAT EXCHANGER HEAT EXCHANGER THERMISTOR FIELD PIPING ON HEAT ( 6.4CuT ) THERMISTOR SIROCCO FAN EXCH. FIELD PIPING ON HEAT ( 6.4CuT ) EXCH.
  • Page 331 SiBE12-816_D Piping Diagrams 1.1.4 Duct Connected Type FDK(X)S25/35EAVMB, FDK(X)S50CVMB INDOOR UNIT ( 6.4CuT ) HEAT EXCHANGER THERMISTOR ON HEAT FIELD PIPING ( 6.4CuT ) EXCH. SIROCCO FAN FAN MOTOR FIELD PIPING CuT) CuT ) REFRIGERANT FLOW COOLING HEATING FDXS25EAVMB FDXS35EAVMB FDXS50CVMB 12.7 FDKS25EAVMB...

  • Page 332: Outdoor Unit

    Piping Diagrams SiBE12-816_D Outdoor Unit 1.2.1 Cooling Only 2MKS40GV1B, 2MKS40G2V1B OUTDOOR UNIT OUTDOOR TEMPERATURE MUFFLER MOTOR OPERATED VALVE THERMISTOR LIQUID PIPE LIQUID LINE BRANCH WITH HEAT EXCHANGER THERMISTOR STOP VALVE PIPE MUFFLER 7.0CuT FILTER 6.4CuT 6.4CuT 6.4CuT 6.4CuT ROOM A (6.4 CuT)
  • Page 333 SiBE12-816_D Piping Diagrams 1.2.2 Heat Pump 2MXS40GV1B, 2MXS40G2V1B OUTDOOR UNIT OUTDOOR TEMPERATURE MUFFLER MOTOR OPERATED VALVE LIQUID PIPE THERMISTOR LIQUID LINE WITH BRANCH HEAT EXCHANGER MUFFLER THERMISTOR STOP VALVE FILTER PIPE 7.0CuT 6.4CuT 6.4CuT 6.4CuT 6.4CuT ROOM A 7.0CuT (6.4 CuT) BRANCH 6.4CuT FIELD...

  • Page 334: Wiring Diagrams

    Wiring Diagrams SiBE12-816_D 2. Wiring Diagrams Indoor Unit 2.1.1 Wall Mounted Type FTXG25/35EV1BW(S), CTXG50EV1BW(S) PCB2 LED4 LED3 LED2 SIGNAL RECEIVER GRN / YLW WIRELESS FIELD WIRING. t° REMOTE GRN / YLW CONTROLLER PCB3 PCB1 TRANSMISSION CIRCUIT outdoor INTELLIGENT EYE SENSOR CAUTION NOTE THAT OPERATION WILL 3.15A...
  • Page 335 SiBE12-816_D Wiring Diagrams FTXS20/25/35/42/50G2V1B, FTXS20/25/35/42/50J2V1B PCB3 PCB1 LED1 3.15A OUTDOOR C102 LED2 MR10 FIELD WIRING. LED3 C101 TRANSMISSION CAUTION CIRCUIT NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY t˚ IS TURNED OFF AND THEN BACK ON AGAIN. : BUZZER RTH1 C101, C102 : CAPACITOR...
  • Page 336 Wiring Diagrams SiBE12-816_D 2.1.3 Floor / Ceiling Suspended Dual Type FLK(X)S25/35/50BAVMB 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 337 SiBE12-816_D Wiring Diagrams 2.1.5 Ceiling Mounted Cassette Type FFQ25/35/50B8V1B : CONNECTER DISCRIMINATION COLOUR FOR COMPONENTS. : CONNECTER COLOUR FOR COMPONENTS. : CONNECTER COLOUR FOR PRINTED CIRCUIT BOARD. t˚ IN CASE OF SIMULTANEOUS t˚ t˚ OPERATION SYSTEM INDOOR UNIT INDOOR UNIT ( MASTER ) ( SLAVE ) NOTE ) 5...

  • Page 338: Outdoor Unit

    Wiring Diagrams SiBE12-816_D Outdoor Unit 2.2.1 Cooling Only 2MKS40GV1B, 2MKS40G2V1B indoor PCB1 C100 MRM20 IPM1 ROOM A MRM10 ROOM B 3.15A 3.15A 1C11 MRCW S92 RED S91WHT S20 WHT S21 RED POWER SUPPLY 102°C t° t° t° t° t° t° t°...
  • Page 339 SiBE12-816_D Wiring Diagrams 2.2.2 Heat Pump 2MXS40GV1B, 2MXS40G2V1B indoor PCB1 C100 MRM20 IPM1 ROOM A MRM10 3.15A ROOM B 3.15A 1C11 MRCW S92 RED S91WHT S20 WHT S21 RED POWER SUPPLY 102°C t° t° t° t° t° t° t° (ROOM-A) (ROOM-A) (OUTDOOR) (DISCHARGE)
  • Page 340 Revision History Month / Year Version Revised contents 04/2008 SiBE12-816 – 06/2010 SiBE12-816_A Addition of the wall mounted type FTXG-JV1BW(S), CTXG-JV1BW(S) M-10013: Correction of troubleshooting flowchart AF for SkyAir models 11/2010 SiBE12-816_B 01/2011 SiBE12-816_C Correction of data 02/2011 SiBE12-816_D Addition of the wall mounted type FTXS-J2V1B for cooling only model...
  • Page 341 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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