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

Super multi plus e-series
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Table of Contents

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SiEN18-622
Service
Manual
E-Series
[Applied Models]
Super Multi Plus: Cooling Only
Heat Pump

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Summary of Contents for Daikin Super Multi Plus E-Series

  • Page 1 SiEN18-622 Service Manual E-Series [Applied Models] Super Multi Plus: Cooling Only Heat Pump...
  • Page 2 SiEN18-622 SUPER MULTI PLUS E-Series Cooling Only Indoor Unit FTKS20DVMA FDKS25CAVMB FFQ25B8V1B FTKS25DVMA FDKS35CAVMB FFQ35B8V1B FTKS35DVMA FDKS50CVMB FFQ50B8V1B FTKS25DVM FDKS60CVMB FFQ60B8V1B FTKS35DVM FDKS25EAVMB FCQ35BVE FTKS25EVMA FDKS35EAVMB FCQ50BVE FTKS35EVMA CDKS25CVMA FCQ60BVE FTKS50FVMA CDKS35CVMA FCQ71BVE FTKS60FVMA CDKS50CVMA FBQ60BV1 FTKS71FVMA CDKS60CVMA FBQ71BV1 FTKS50BVMA8 CDKS25EAVMA FHQ35BVV1B FTKS60BVMA8...
  • Page 3 SiEN18-622 Heat Pump Indoor Unit FTXS20DVMA FDXS25CVMA FLXS25BVMA FFQ25B8V1B FTXS25DVMA FDXS35CVMA FLXS35BVMA FFQ35B8V1B FTXS35DVMA FDXS50CVMA FLXS50BVMA FFQ50B8V1B FTXS25EVMA FDXS60CVMA FLXS60BVMA FFQ60B8V1B FTXS35EVMA CDXS25CVMA FVXS35BVMA FCQ35BVE FTXS20DVMT CDXS35CVMA FVXS50BVMA FCQ50BVE FTXS25DVMT CDXS50CVMA FCQ60BVE FTXS35DVMT CDXS60CVMA FCQ71BVE FTXS50DVMT CDXS25EAVMA FBQ60BV1 FTXS60DVMT CDXS35EAVMA FBQ71BV1 FTXS71DVMT CDXS25DVMT...

  • Page 4: Table Of Contents

    SiEN18-622 1. Introduction ..................viii 1.1 Safety Cautions ..................viii 1.2 Used Icons ..................... xii Part 1 List of Functions ..............1 1. List of Functions ..................2 1.1 Cooling Only.....................2 1.2 Heat Pump ....................9 Part 2 Specifications ..............17 1. Specifications ..................18 1.1 Cooling Only...................18 1.2 Heat Pump .....................34 Part 3 Printed Circuit Board Connector Wiring Diagram ...
  • Page 5 SiEN18-622 3. Special Control..................101 3.1 Startup Control ..................101 3.2 Oil Return Operation ................102 3.3 Defrosting Operation ................104 3.4 Pump-down Residual Operation ............105 3.5 Restart Standby..................105 3.6 Stopping Operation ................106 4. Protection Control ................107 4.1 High Pressure Protection Control............107 4.2 Low Pressure Protection Control............108 4.3 Discharge Pipe Protection Control ............109 4.4 Inverter Protection Control ..............110 4.5 Freeze-up Protection Control ...............111...
  • Page 6 SiEN18-622 4.3 Initial Setting Contents .................172 4.4 Local Setting Mode Number..............173 4.5 Detailed Explanation of Setting Modes ..........174 4.6 Centralized Group No. Setting .............178 4.7 Maintenance Mode Setting..............179 5. Test Operation and Field Setting for RA Indoor Unit......180 5.1 Test Operation from the Remote control ..........180 5.2 Jumper Settings ...................181 Part 7 System Configuration.............
  • Page 7 SiEN18-622 5.10 Malfunction of Suction Air Thermistor ..........345 5.11 Malfunction of Remote Control Thermistor...........346 5.12 Transmission Error (between Indoor Unit and Remote Control) ..347 5.13 Transmission Error (between Main and Sub Remote Control).....348 5.14 Malfunction of Field Setting Switch ............349 5.15 Check ....................350 6.
  • Page 8 SiEN18-622 7.32 Malfunction of Transmission between Indoor and Outdoor Units in the Same System ............396 7.33 Excessive Number of Indoor Units ............398 7.34 Address Duplication of Central Remote Control........399 7.35 Malfunction of Transmission between Central Remote Control and Indoor Unit....................400 7.36 System is not Set yet................402 7.37 Malfunction of System, Refrigerant System Address Undefined..403 8.

  • Page 9: Introduction

    Introduction SiEN18-622 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 10 SiEN18-622 Introduction Warning Be sure to wear a safety helmet, gloves, and a safety belt when working at a high place (more than 2m). Insufficient safety measures may cause a fall accident. In case of R410A refrigerant models, be sure to use pipes, flare nuts and tools for the exclusive use of the R410A refrigerant.
  • Page 11 Introduction SiEN18-622 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 12 SiEN18-622 Introduction Warning Check to make sure that the power cable plug is not dirty or loose, then insert the plug into a power outlet securely. If the plug has dust or loose connection, it may cause an electrical shock or fire. Be sure to install the product correctly by using the provided standard For unitary type installation frame.

  • Page 13: Used Icons

    Introduction SiEN18-622 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 14: Part 1 List Of Functions

    SiEN18-622 Part 1 List of Functions 1. List of Functions ..................2 1.1 Cooling Only.....................2 1.2 Heat Pump ....................9 List of Functions...

  • Page 15: Cooling Only

    List of Functions SiEN18-622 1. List of Functions Cooling Only Category Functions Category Functions Air Purifying Filter with Bacteriostatic & Inverter (with Inverter Power Control) — Virustatic Functions –5 Operation Limit for Cooling (°CDB) Photocatalytic Deodorizing Filter — Basic Function Air Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
  • Page 16 SiEN18-622 List of Functions Category Functions Category Functions Air Purifying Filter with Bacteriostatic & Inverter (with Inverter Power Control) — — Virustatic Functions Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — — Basic Air Purifying Filter with Photocatalytic Function Operation Limit for Heating (°CWB) —...
  • Page 17 List of Functions SiEN18-622 Category Functions Category Functions Air Purifying Filter with Bacteriostatic & Inverter (with Inverter Power Control) — — Virustatic Functions Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — — Basic Air Purifying Filter with Photocatalytic Function Operation Limit for Heating (°CWB) —...
  • Page 18 SiEN18-622 List of Functions Category Functions Category Functions Air Purifying Filter with Bacteriostatic & Inverter (with Inverter Power Control) — — — Virustatic Functions Operation Limit for Cooling (°CDB) — — — Photocatalytic Deodorizing Filter — — — Basic Air Purifying Filter with Photocatalytic Function Operation Limit for Heating (°CWB) —...
  • Page 19 List of Functions SiEN18-622 Category Functions Category Functions Air Purifying Filter with Bacteriostatic & Inverter (with Inverter Power Control) — — Virustatic Functions Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — — Basic Air Purifying Filter with Photocatalytic Function Operation Limit for Heating (°CWB) —...
  • Page 20 SiEN18-622 List of Functions Category Functions Category Functions Air Purifying Filter with Bacteriostatic & Inverter (with Inverter Power Control) — — Virustatic Functions Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — — Basic Air Purifying Filter with Photocatalytic Function Operation Limit for Heating (°CWB) —...
  • Page 21 List of Functions SiEN18-622 Category Functions Category Functions Air Purifying Filter with Bacteriostatic & Inverter (with Inverter Power Control) — — Virustatic Functions Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — — Basic Air Purifying Filter with Photocatalytic Function Operation Limit for Heating (°CWB) —...

  • Page 22: Heat Pump

    SiEN18-622 List of Functions Heat Pump Category Functions Category Functions Air Purifying Filter with Bacteriostatic & Inverter (with Inverter Power Control) — Virustatic Functions –5 Operation Limit for Cooling (°CDB) Photocatalytic Deodorizing Filter — Basic Function –15 Air Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
  • Page 23 List of Functions SiEN18-622 Category Functions Category Functions Air Purifying Filter with Bacteriostatic & Inverter (with Inverter Power Control) — — Virustatic Functions Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — — Basic Air Purifying Filter with Photocatalytic Function Operation Limit for Heating (°CWB) —...
  • Page 24 SiEN18-622 List of Functions Category Functions Category Functions Air Purifying Filter with Bacteriostatic & Inverter (with Inverter Power Control) — — Virustatic Functions Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — — Basic Air Purifying Filter with Photocatalytic Function Operation Limit for Heating (°CWB) —...
  • Page 25 List of Functions SiEN18-622 Category Functions Category Functions Air Purifying Filter with Bacteriostatic & Inverter (with Inverter Power Control) — — Virustatic Functions Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — — Basic Air Purifying Filter with Photocatalytic Function Operation Limit for Heating (°CWB) —...
  • Page 26 SiEN18-622 List of Functions Category Functions Category Functions Air Purifying Filter with Bacteriostatic & Inverter (with Inverter Power Control) — Virustatic Functions Operation Limit for Cooling (°CDB) — Photocatalytic Deodorizing Filter — Basic Air Purifying Filter with Photocatalytic Function Operation Limit for Heating (°CWB) —...
  • Page 27 List of Functions SiEN18-622 Category Functions Category Functions Air Purifying Filter with Bacteriostatic & Inverter (with Inverter Power Control) Virustatic Functions Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter Basic Air Purifying Filter with Photocatalytic Function Operation Limit for Heating (°CWB) —...
  • Page 28 SiEN18-622 List of Functions Category Functions Category Functions Air Purifying Filter with Bacteriostatic & Inverter (with Inverter Power Control) — — Virustatic Functions Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — — Basic Air Purifying Filter with Photocatalytic Function Operation Limit for Heating (°CWB) —...
  • Page 29 List of Functions SiEN18-622 Category Functions Category Functions Air Purifying Filter with Bacteriostatic & Inverter (with Inverter Power Control) — — Virustatic Functions Operation Limit for Cooling (°CDB) — — Photocatalytic Deodorizing Filter — — Basic Air Purifying Filter with Photocatalytic Function Operation Limit for Heating (°CWB) —...

  • Page 30: Part 2 Specifications

    SiEN18-622 Part 2 Specifications 1. Specifications ..................18 1.1 Cooling Only...................18 1.2 Heat Pump .....................34 Specifications...

  • Page 31: Specifications

    Specifications SiEN18-622 1. Specifications Cooling Only 1.1.1 Outdoor Units 50Hz 220-230V / 60Hz 220-230V Model RMKS112EVM RMKS140EVM RMKS160EVM Cooling Capacity 11.2 (9,630) 14.0 (12,040) 15.5 (13,330) (kcal/h) Total Indoor Unit Capacity 5.5~14.5 7.0~18.2 8.0~20.8 Power Consumption — Running Current — Casing Color Ivory White Type...
  • Page 32 SiEN18-622 Specifications 50Hz 220-230-240V Model RMKS112EV1A RMKS140EV1A RMKS160EV1A Cooling Capacity 11.2 (9,630) 14.0 (12,040) 15.5 (13,330) (kcal/h) Total Indoor Unit Capacity 5.5~14.5 7.0~18.2 8.0~20.8 Power Consumption — Running Current — Casing Color Ivory White Type Hermetically Sealed Scroll Type Model JT100FCVD Compressor Motor Output...
  • Page 33 Specifications SiEN18-622 1.1.2 BP Units 50Hz 220-230-240V Model BPMKS967A2 BPMKS967A3 Connectable Indoor Units 1~2 Units 1~3 Units Casing Color Paintingless Power Consumption Running Current 0.05 0.05 Refrigerant Type R-410A Dimension (H×W×D) 180×294(650)*×350 Package Dimension (H×W×D) 257×738×427 Machine Weight Gross Weight Number of Wiring Connections 4 for Interunit Wiring Main : φ9.5×1 / Branch : φ6.4×2...
  • Page 34 SiEN18-622 Specifications 50Hz 230V Model BPMKS967B2B BPMKS967B3B Connectable Indoor Units 1~2 Units 1~3 Units Casing Color Paintingless Power Consumption Running Current 0.05 0.05 Refrigerant Type R-410A Dimension (H×W×D) 180×294(650)*×350 Package Dimension (H×W×D) 257×738×427 Machine Weight Gross Weight Number of Wiring Connections 4 for Interunit Wiring Main : φ9.5×1 / Branch : φ6.4×2 Main : φ9.5×1 / Branch : φ6.4×3...

  • Page 35: Indoor Units

    Specifications SiEN18-622 1.1.3 Indoor Units Wall Mounted Type 50Hz 220-230-240V / 60Hz 220-230V Model FTKS20DVMA FTKS25DVMA Rated Capacity 2.0kW Class 2.5kW Class Front Panel Color White White 8.7 (307) 8.7 (307) 6.7 (237) 6.7 (237) m³/min Air Flow Rates (cfm) 4.7 (166) 4.7 (166) 3.9 (138)
  • Page 36 SiEN18-622 Specifications 50Hz 220-230-240V / 60Hz 220-230V Model FTKS35DVM FTKS25EVMA Rated Capacity 3.5kW Class 2.5kW Class Front Panel Color White White 8.9 (314) 8.7 (307) 6.9 (242) 6.7 (237) m³/min Air Flow Rates (cfm) 4.8 (169) 4.7 (166) 4.0 (141) 3.9 (138) Type Cross Flow Fan...
  • Page 37 Specifications SiEN18-622 50Hz 220-230-240V / 60Hz 220-230V Model FTKS60FVMA FTKS71FVMA Rated Capacity 6.0kW Class 7.1kW Class Front Panel Color White White 16.2 (572) 17.4 (614) 13.9 (491) 14.6 (516) m³/min Air Flow Rates (cfm) 11.5 (406) 11.9 (420) 10.0 (353) 11.2 (395) Type Cross Flow Fan...
  • Page 38 SiEN18-622 Specifications 50Hz 240V Model FTKS71BVMA8 Rated Capacity 7.1kW Class Front Panel Color White 16.8 (593) 14.2 (501) m³/min Air Flow Rates (cfm) 11.9 (420) 11.2 (394) Type Cross Flow Fan Motor Output Speed Steps 5 Steps, Silent, Auto Air Direction Control Right, Left, Horizontal, Downward Air Filter Removable-Washable-Mildew Proof...
  • Page 39 Specifications SiEN18-622 50Hz 230V Model FTKS71BVMB Rated Capacity 7.1kW Class Front Panel Color White 16.7 (590) 14.2 (501) m³/min Air Flow Rates (cfm) 11.6 (409) 10.6 (374) Type Cross Flow Fan Motor Output Speed Steps 5 Steps, Silent, Auto Air Direction Control Right, Left, Horizontal, Downward Air Filter Removable-Washable-Mildew Proof...
  • Page 40 SiEN18-622 Specifications Duct Connected Type 50Hz 230V Model FDKS25CAVMB FDKS35CAVMB Rated Capacity 2.5kW Class 3.5kW Class — — Front Panel Color 9.5 (335) 10.0 (353) 8.8 (311) 9.3 (328) m³/min Air Flow Rates (cfm) 8.0 (282) 8.5 (300) 6.7 (237) 7.0 (247) Type Sirocco Fan...
  • Page 41 Specifications SiEN18-622 50Hz 230V Model FDKS25EAVMB FDKS35EAVMB Rated Capacity 2.5kW Class 3.5kW Class — — Front Panel Color 8.7 (307) 8.7 (307) 8.0 (282) 8.0 (282) m³/min Air Flow Rates (cfm) 7.3 (258) 7.3 (258) 6.2 (219) 6.2 (219) Type Sirocco Fan Sirocco Fan Motor Output...
  • Page 42 SiEN18-622 Specifications 50Hz 230V Model CDKS25CVMA CDKS35CVMA Rated Capacity 2.5kW Class 3.5kW Class — — Front Panel Color 9.5 (335) 10.0 (353) 8.8 (311) 9.3 (328) m³/min Air Flow Rates (cfm) 8.0 (282) 8.5 (300) 6.7 (237) 7.0 (247) Type Sirocco Fan Sirocco Fan Motor Output...
  • Page 43 Specifications SiEN18-622 50Hz 220-230-240V Model CDKS25EAVMA CDKS35EAVMA Rated Capacity 2.5kW Class 3.5kW Class — — Front Panel Color 8.7 (307) 8.7 (307) 8.0 (282) 8.0 (282) m³/min Air Flow Rate (cfm) 7.3 (258) 7.3 (258) 6.2 (219) 6.2 (219) Type Sirocco Fan Sirocco Fan Motor Output...

  • Page 44: Ceiling Mounted Cassette Type

    SiEN18-622 Specifications Ceiling Mounted Cassette Type 50Hz 230V Model FFQ25B8V1B FFQ35B8V1B Rated Capacity 2.5kW Class 3.5kW Class Color White White Decoration Panel Dimensions (H×W×D) 55×700×700 55×700×700 9.0 (318) 10.0 (353) — — m³/min Air Flow Rates (cfm) 6.5 (230) 6.5 (230) —...
  • Page 45 Specifications SiEN18-622 50Hz 220-230-240V Model FCQ35BVE FCQ50BVE Rated Capacity 3.5kW Class 5.0kW Class Color White White Decoration Panel Dimensions (H×W×D) 40×950×950 40×950×950 14.0 (494) 15.0 (530) — — m³/min Air Flow Rates (cfm) 10.0 (353) 11.0 (388.3) — — Type Turbo Fan Turbo Fan Motor Output...

  • Page 46: Ceiling Suspended Type

    SiEN18-622 Specifications Ceiling Mounted Built-in Type 50Hz 220-230-240V Model FBQ60BV1 FBQ71BV1 Rated Capacity 6.0kW Class 7.1kW Class Color White White Decoration Panel Dimensions (H×W×D) 55×1,100×500 55×1,100×500 17.0 (600) 19.0 (670) — — m³/min Air Flow Rates (cfm) 13.0 (459) 14.0 (494) —...

  • Page 47: Heat Pump

    Specifications SiEN18-622 Heat Pump 1.2.1 Outdoor Units 50Hz 220-230-240V Model RMXS112EV1A RMXS140EV1A RMXS160EV1A Cooling Capacity 11.2 (9,630) 14.0 (12,040) 15.5 (13,330) (kcal/h) Heating Capacity 12.5 (10,750) 16.0 (13,760) 17.5 (15,050) (kcal/h) Total Indoor Unit Capacity 5.5~14.5 7.0~18.2 8.0~20.8 Power Consumption —...
  • Page 48 SiEN18-622 Specifications 60Hz 220V Model RMXS112EVLT RMXS140EVLT RMXS160EVLT Cooling Capacity 11.2 (9,630) 14.0 (12,040) 15.5 (13,330) (kcal/h) Heating Capacity 12.5 (10,750) 16.0 (13,760) 17.5 (15,050) (kcal/h) Total Indoor Unit Capacity 5.5~14.5 7.0~18.2 8.0~20.8 Power Consumption — Running Current — Casing Color Ivory White Type Hermetically Sealed Scroll Type...
  • Page 49 Specifications SiEN18-622 1.2.2 BP Units 50Hz 220-240V Model BPMKS967A2 BPMKS967A3 Connectable Indoor Units 1~2 Units 1~3 Units Casing Color Paintingless Power Consumption Running Current 0.05 0.05 Refrigerant Type R-410A Dimension (H×W×D) 180×294(650)*×350 Package Dimension (H×W×D) 257×738×427 Machine Weight Gross Weight Number of Wiring Connections 4 for Interunit Wiring Main : φ9.5×1 / Branch : φ6.4×2...
  • Page 50 SiEN18-622 Specifications 1.2.3 Indoor Units Wall Mounted Typ 50Hz 220-230-240V / 60Hz 220-230V FTXS20DVMA FTXS25DVMA Model Cooling Heating Cooling Heating Rated Capacity 2.0kW Class 2.5kW Class Front Panel Color White White 8.7 (307) 9.4 (332) 8.7 (307) 9.4 (332) 6.7 (237) 7.6 (268) 6.7 (237) 7.6 (268)
  • Page 51 Specifications SiEN18-622 50Hz 220-230-240V / 60Hz 220-230V FTXS35EVMA FTXS50FVMA Model Cooling Heating Cooling Heating Rated Capacity 3.5kW Class 5.0kW Class Front Panel Color White White 8.9 (314) 9.7 (342) 14.7 (519) 16.2 (572) 6.9 (242) 7.9 (277) 12.6 (445) 13.8 (487) m³/min Air Flow Rates (cfm)
  • Page 52 SiEN18-622 Specifications 50Hz 230V FTXS50BVMA8 FTXS60BVMA8 Model Cooling Heating Cooling Heating Rated Capacity 5.0kW Class 6.0kW Class Front Panel Color White White 11.4 (402) 12.6 (444) 16.2 (573) 17.4 (613) 9.8 (346) 10.9 (385) 13.9 (490) 15.3 (539) m³/min Air Flow Rates (cfm) 8.7 (306) 9.3 (329)
  • Page 53 Specifications SiEN18-622 60Hz 220V FTXS20DVMT FTXS25DVMT Model Cooling Heating Cooling Heating Capacity 2.0kW Class 2.5kW Class Front Panel Color White White 8.7 (307) 9.4 (332) 8.7 (307) 9.4 (332) 6.7 (237) 7.6 (268) 6.7 (237) 7.6 (268) m³/min Air Flow Rates (cfm) 4.7 (166) 5.8 (205)
  • Page 54 SiEN18-622 Specifications 60Hz 220V FTXS60DVMT FTXS71DVMT Model Cooling Heating Cooling Heating Capacity 6.0kW Class 7.1kW Class Front Panel Color White White 16.2 (572) 17.4 (614) 16.7 (590) 18.5 (653) 13.6 (480) 15.1 (533) 14.2 (501) 15.1 (533) m³/min Air Flow Rates (cfm) 11.4 (402) 12.7 (448)
  • Page 55 Specifications SiEN18-622 Duct Connected Type 50Hz 230V FDXS25CVMA FDXS35CVMA Model Cooling Heating Cooling Heating Rated Capacity 2.5kW Class 3.5kW Class — — Front Panel Color 9.5 (335) 9.5 (335) 10.0 (353) 10.0 (353) 8.8 (311) 8.8 (311) 9.3 (328) 9.3 (328) m³/min Air Flow Rates (cfm)
  • Page 56 SiEN18-622 Specifications 50Hz 220-230-240V CDXS25EAVMA CDXS35EAVMA Model Cooling Heating Cooling Heating Rated Capacity 2.5kW Class 3.5kW 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 Air Flow Rates (cfm) 7.3 (258) 7.3 (258)
  • Page 57 Specifications SiEN18-622 50Hz 230V CDXS25CVMA CDXS35CVMA Model Cooling Heating Cooling Heating Rated Capacity 2.5kW Class 3.5kW Class — — Front Panel Color 9.5 (335) 9.5 (335) 10.0 (353) 10.0 (353) 8.8 (311) 8.8 (311) 9.3 (328) 9.3 (328) m³/min Air Flow Rates (cfm) 8.0 (282) 8.0 (282)
  • Page 58 SiEN18-622 Specifications 60Hz 220V CDXS25DVMT CDXS35DVMT Model Cooling Heating Cooling Heating Capacity 2.5kW Class 3.5kW Class — — Front Panel Color 9.5 (335) 10.0 (353) 8.8 (311) 9.3 (328) m³/min Air Flow Rates (cfm) 8.0 (282) 8.5 (300) 6.7 (237) 7.0 (247) Type Sirocco Fan...
  • Page 59 Specifications SiEN18-622 60Hz 220V CDXS25EAVMT CDXS35EAVMT Model Cooling Heating Cooling Heating Rated Capacity 2.5kW Class 3.5kW 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 Air Flow Rates (cfm) 7.3 (258) 7.3 (258)
  • Page 60 SiEN18-622 Specifications Floor Standing Type 50Hz 220-230-240V / 60Hz 220-230V FVXS35BVMA FVXS50BVMA Model Cooling Heating Cooling Heating Rated Capacity 3.5kW Class 5.0kW Class Front Panel Color Almond White Almond White 8.3 (293) 9.2 (325) 10.8 (381) 13.2 (466) 6.3 (222) 7.1 (251) 9.2 (325) 11.3 (399)
  • Page 61 Specifications SiEN18-622 Floor / Ceiling Suspended Dual Type 50Hz 230V FLXS25BVMA FLXS35BVMA Model Cooling Heating Cooling Heating Rated Capacity 2.5kW Class 3.5kW Class Front Panel Color Almond White Almond White 7.6 (268) 9.2 (325) 8.6 (304) 9.8 (346) 6.8 (240) 8.3 (293) 7.6 (268) 8.9 (314)
  • Page 62 SiEN18-622 Specifications Ceiling Mounted Cassette Type 50Hz 230V FFQ25B8V1B FFQ35B8V1B Model Cooling Heating Cooling Heating Rated Capacity 2.5kW Class 3.5kW Class Color White White Decoration Panel Dimensions (H×W×D) 55×700×700 55×700×700 9.0 (318) 9.0 (318) 10.0 (353) 10.0 (353) — — —...
  • Page 63 Specifications SiEN18-622 50Hz 220-230V FCQ35BVE FCQ50BVE Model Cooling Heating Cooling Heating Rated Capacity 3.5kW Class 5.0kW Class Color White White Decoration Panel Dimensions (H×W×D) 40×950×950 40×950×950 14.0 (494) 15.0 (530) — — m³/min Air Flow Rates (cfm) 10.0 (353) 11.0 (388.3) —...
  • Page 64 SiEN18-622 Specifications Ceiling Mounted Built-in Type 50Hz 220-230-240V FBQ60BV1 FBQ71BV1 Model Cooling Heating Cooling Heating Rated Capacity 6.0kW Class 7.1kW Class Color White White Decoration Panel Dimensions (H×W×D) 55×1100×500 55×1100×500 17.0 (600) 19.0 (670) — — m³/min Air Flow Rates (cfm) 13.0 (459) 14.0 (494)
  • Page 65 Specifications SiEN18-622 Ceiling Suspended Type 50Hz 220-230-240V FHQ35BVV1B FHQ50BVV1B FHQ60BVV1B Model Cooling Heating Cooling Heating Cooling Heating Rated Capacity 3.5kW Class 5.0kW Class 6.0kW Class Color White White White Decoration Panel Dimensions (H×W×D) — — — 13.0 (458) 13.0 (458) 13.0 (458) 13.0 (458) 17.0 (600)

  • Page 66: Printed Circuit Board Connector Wiring Diagram

    SiEN18-622 Part 3 Printed Circuit Board Connector Wiring Diagram Printed Circuit Board Connector Wiring Diagram ..........54 1.1 Outdoor Unit ...................54 1.2 BP Unit ....................59 1.3 Wall Mounted Type 20/25/35 Class ............60 1.4 Wall Mounted Type 50/60/71 Class ............62 1.5 Duct Connected Type................64 1.6 Floor / Ceiling Suspended Dual Type.............66 1.7 Floor Standing Type ................69 1.8 Ceiling Mounted Cassette 600×600 Type ..........72...

  • Page 67: Outdoor Unit

    Printed Circuit Board Connector Wiring Diagram SiEN18-622 1. Printed Circuit Board Connector Wiring Diagram Outdoor Unit 1.1.1 Main PCB (A1P) Connectors 1) X5A Connector to Service PCB (A2P) 2) X11A Connector for Outdoor Air Thermistor 3) X12A Connector for Thermistors (Suction Pipe1, 2, Heat Exchanger, Discharge Pipe) 4) X13A Connector for Thermistors (Subcool Outlet, Liquid Pipe)
  • Page 68 SiEN18-622 Printed Circuit Board Connector Wiring Diagram PCB Detail X106A X107A X111A X66A X37A X81A X22A X21A X13A X11A X12A X18A X17A X32A X25A X26A X27A X28A 2P175758 Printed Circuit Board Connector Wiring Diagram and Name...
  • Page 69 Printed Circuit Board Connector Wiring Diagram SiEN18-622 1.1.2 Service PCB (A2P) Connectors 1) X205A Connector for Main PCB (A1P) Note: Other Designation 1) H1P to H8P Service Monitor LED 2) BS1 to BS5 Push Button Switch (Mode, Set, Return, Test, Reset) 3) DS1 DIP Switch PCB Detail...
  • Page 70 SiEN18-622 Printed Circuit Board Connector Wiring Diagram 1.1.3 Noise Filter PCB (A3P) Connectors 1) LA, NA Terminal for X1M (Power Supply) 2) LB, NB Terminal for Main PCB (A1P) 3) E Terminal for Earth Note: Other Designation 1) F1U Fuse (250V 6.3A) PCB Detail 2P174186 Printed Circuit Board Connector Wiring Diagram and Name...
  • Page 71 Printed Circuit Board Connector Wiring Diagram SiEN18-622 1.1.4 Cool / Heat Selector PCB (A4P) Connectors 1) X1A Connector for Main PCB (A1P) Note: Other Designation 1) X1M Cool / Heat Selector PCB Detail 2P174187 Printed Circuit Board Connector Wiring Diagram and Name...

  • Page 72: Bp Unit

    SiEN18-622 Printed Circuit Board Connector Wiring Diagram BP Unit Connectors 1) X20A Connector for Bypass Electronic Expansion Valve 2) X21A to X23A Connector for Electronic Expansion Valve to Room A, B and C 3) X90A Connector for Thermistors Note: Other Designations 1) F2U Fuse (AC250V 3.15A) 2) X3M...

  • Page 73: Wall Mounted Type 20/25/35 Class

    Printed Circuit Board Connector Wiring Diagram SiEN18-622 Wall Mounted Type 20/25/35 Class Connectors PCB(1) (Control PCB) 1) S1 Connector for DC fan motor 2) S6 Connector for swing motor (horizontal blades) 3) S21 Connector for centralized control (HA) 4) S26 Connector for display PCB 5) S28 Connector for signal receiver PCB...
  • Page 74 SiEN18-622 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1): Control PCB LED A (R4986) PCB(2): Signal Receiver PCB PCB(3): Display PCB LED1 LED2 LED3 RTH1 (R5183) (R4290) PCB(4): INTELLIGENT EYE sensor PCB (R4291) Printed Circuit Board Connector Wiring Diagram and Name...

  • Page 75: Wall Mounted Type 50/60/71 Class

    Printed Circuit Board Connector Wiring Diagram SiEN18-622 Wall Mounted Type 50/60/71 Class Connectors PCB(1) (Control PCB) 1) S1 Connector for DC fan motor 2) S6 Connector for swing motor (horizontal blades) 3) S8 Connector for swing motor (vertical blades) 4) S21 Connector for centralized control (HA) 5) S26 Connector for buzzer PCB...
  • Page 76 SiEN18-622 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1): Control PCB (indoor unit) LED A (R2860) PCB(2): Signal Receiver PCB PCB(3): Buzzer PCB (R2861) RTH1 (R2862) PCB(4): Display PCB PCB(5): Intelligent Eye sensor PCB LED1 LED2 LED3 (R2863) (R2864) Printed Circuit Board Connector Wiring Diagram and Name...

  • Page 77: Duct Connected Type

    Printed Circuit Board Connector Wiring Diagram SiEN18-622 Duct Connected Type Connectors PCB(1) (Control PCB) 1) S1 Connector for AC fan motor 2) S7 Connector for AC fan motor 3) S21 Connector for centralized control to 5 rooms 4) S26 Connector for display PCB 5) S32 Connector for heat exchanger thermistor PCB(2) (Display PCB)
  • Page 78 SiEN18-622 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB (2): Display PCB LED3 LED2 RTH1 Pb Free LED1 2P084375 Printed Circuit Board Connector Wiring Diagram and Name...

  • Page 79: Floor / Ceiling Suspended Dual Type

    Printed Circuit Board Connector Wiring Diagram SiEN18-622 Floor / Ceiling Suspended Dual Type Connectors PCB(1) (Control PCB) 1) S6 Connector for swing motor (horizontal swing) 2) S7 Connector for AC fan motor 3) S21 Connector for centralized control 4) S24 Connector for display PCB 5) S26 Connector for signal receiver PCB...
  • Page 80 SiEN18-622 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB (1): Control PCB Pb Free LED A 12V Check 5V Check PCB Detail PCB (2): Power Supply PCB Pb Free Printed Circuit Board Connector Wiring Diagram and Name...
  • Page 81 Printed Circuit Board Connector Wiring Diagram SiEN18-622 PCB (3): Display PCB Pb Free LED2 LED1 LED3 PCB (4): Signal Receiver PCB EX511 REV 12 PHOTO 2P084377-1 S31(RTH) (R4977) Printed Circuit Board Connector Wiring Diagram and Name...

  • Page 82: Floor Standing Type

    SiEN18-622 Printed Circuit Board Connector Wiring Diagram Floor Standing Type Connectors PCB(1) (Power Supply PCB) 1) S8, S202, Connector for control PCB S204 PCB(2) (Control PCB) 1) S6 Connector for swing motor and lower air outlet motor 2) S21 Connector for centralized control 3) S23 Connector for display PCB 4) S31, S32...
  • Page 83 Printed Circuit Board Connector Wiring Diagram SiEN18-622 PCB Detail PCB (1): Power Supply PCB (25, 35 class) PCB Detail PCB (1): Power Supply PCB (50 class) Printed Circuit Board Connector Wiring Diagram and Name...
  • Page 84 SiEN18-622 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB (2): Control PCB PCB (3): Display PCB PCB (4): Signal Receiver PCB Pb Free Pb Free Pb Free Printed Circuit Board Connector Wiring Diagram and Name...

  • Page 85: Ceiling Mounted Cassette 600×600 Type

    Printed Circuit Board Connector Wiring Diagram SiEN18-622 Ceiling Mounted Cassette 600×600 Type Connectors PCB(1)(Control PCB [A1P]) 1) X5A Connector for terminal strip (for wired remote control) 2) X10A, X11A Connector for transformer 3) X15A Connector for float switch 4) X17A, X18A Connector for heat exchanger thermistor 5) X19A Connector for room temperature thermistor...
  • Page 86 SiEN18-622 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB (1): Control PCB (A1P) X20A X25A X27A X33A X18A Capacity setting adaptor X19A X61A X36A X60A X40A (Service monitor LED) X24A X17A X35A X15A 2P095006 Printed Circuit Board Connector Wiring Diagram and Name...
  • Page 87 Printed Circuit Board Connector Wiring Diagram SiEN18-622 PCB Detail PCB(2): Signal Receiver PCB (A3P) 3P156326 PCB(3): Display PCB (A4P) LED4 LED3 LED2 LED1 3P086209 Printed Circuit Board Connector Wiring Diagram and Name...

  • Page 88: Ceiling Mounted Cassette Type (950×950)

    SiEN18-622 Printed Circuit Board Connector Wiring Diagram Ceiling Mounted Cassette Type (950×950) Connectors PCB(1)(Control PCB [A1P]) 1) X5A Connector for terminal strip (for wired remote control) 2) X10A, X11A Connector for transformer 3) X15A Connector for float switch 4) X17A, X18A Connector for heat exchanger thermistor 5) X19A Connector for room temperature thermistor...
  • Page 89 Printed Circuit Board Connector Wiring Diagram SiEN18-622 PCB Detail PCB(1): Control PCB (A1P) X20A X25A X27A X11A X10A X33A X18A Capacity setting adaptor X19A X61A X60A X36A (Service monitor LED) X17A X15A 2P095006 X24A X35A Printed Circuit Board Connector Wiring Diagram and Name...
  • Page 90 SiEN18-622 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(2): Signal Receiver PCB (A2P) 3P156326 PCB(3): Display PCB (A3P) LED2 LED1 LED3 LED4 3P008986 Printed Circuit Board Connector Wiring Diagram and Name...

  • Page 91: Ceiling Mounted Built-In Type

    Printed Circuit Board Connector Wiring Diagram SiEN18-622 1.10 Ceiling Mounted Built-in Type Connectors Control PCB [A1P] 1) X5A Connector for terminal strip (for wired remote control) 2) X10A, X11A Connector for transformer 3) X15A Connector for float switch 4) X17A, X18A Connector for heat exchanger thermistor 5) X19A Connector for room temperature thermistor...
  • Page 92 SiEN18-622 Printed Circuit Board Connector Wiring Diagram PCB Detail Control PCB (A1P) X21A X27A X25A X11A X10A X35A X33A X60A X61A 2P095008 X15A X18A X19A X17A Printed Circuit Board Connector Wiring Diagram and Name...

  • Page 93: Ceiling Suspended Type

    Printed Circuit Board Connector Wiring Diagram SiEN18-622 1.11 Ceiling Suspended Type Connectors PCB(1) : Control PCB [A1P] 1) X5A Connector for Terminal Strip (for Wired Remote Control) 2) X14A Connector for Limit Switch (for Swing Flap) 3) X15A Connector for Drain Pump (Optional Accessory) 4) X17A Connector for Heat Exchanger Thermistor (2) 5) X18A...
  • Page 94 SiEN18-622 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1) : Control PCB (A1P) Capacity setting adaptor X40A X15A X19A X18A X14A X17A X61A X35A X60A X33A (Service monitor LED) X24A X26A X27A X29A X20A X25A 2P095007 Printed Circuit Board Connector Wiring Diagram and Name...
  • Page 95 Printed Circuit Board Connector Wiring Diagram SiEN18-622 PCB Detail PCB(2): Signal Receiver PCB (A3P) 3P156326 PCB(3): Display PCB (A4P) LED1 LED2 LED4 LED3 3PA58761 Printed Circuit Board Connector Wiring Diagram and Name...

  • Page 96: Refrigerant Circuit

    SiEN18-622 Part 4 Refrigerant Circuit 1. Refrigerant Circuit .................84 1.1 Outdoor Units ................84 1.2 BP Units..................86 2. Functional Parts Layout ................87 2.1 Outdoor Units ................87 3. Refrigerant Flow for Each Operation Mode...........88 3.1 Cooling Operation.................88 3.2 Heating Operation ................89 3.3 Cooling Oil Return Operation............90 3.4 Heating Oil Return Operation &...

  • Page 97: Outdoor Units

    Refrigerant Circuit SiEN18-622 1. Refrigerant Circuit Outdoor Units No. in refrigerant Symbol Name Major Function system diagram Inverter compressor is operated on frequencies between 36 Hz and 195 Hz by using Inverter compressor (INV) the inverter. 31 steps Since the system is of air heat exchanging type, the fan is operated at 8-step rotation Inverter fan speed by using the inverter.
  • Page 98 SiEN18-622 Refrigerant Circuit Refrigerant Circuit Diagram C : 3D052627A Refrigerant Circuit...

  • Page 99: Bp Units

    Refrigerant Circuit SiEN18-622 BP Units No. in refrigerant Symbol Name Major Function system diagram Electronic expansion valve Among EVA, EVB and EVC, the electronic expansion valve of operating room is called (for operating room) EVU. Electronic expansion valve Among EVA, EVB and EVC, the electronic expansion valve of stopping room is called (for stopping room) EVT.

  • Page 100: Functional Parts Layout

    SiEN18-622 Functional Parts Layout 2. Functional Parts Layout Outdoor Units Birds-eye view Solenoid valve (Connector color: black) Reactor lead wire (High voltage) Solenoid valve lead wire (Connector color: black) (High voltage) Pressure sensor (high) (Connector color: red) 4 way valve lead wire 4 way valve (Connector color: blue) (Connector color: blue)

  • Page 101: Refrigerant Flow For Each Operation Mode

    Refrigerant Flow for Each Operation Mode SiEN18-622 3. Refrigerant Flow for Each Operation Mode Cooling Operation Refrigerant Circuit...

  • Page 102: Heating Operation

    SiEN18-622 Refrigerant Flow for Each Operation Mode Heating Operation Refrigerant Circuit...

  • Page 103: Cooling Oil Return Operation

    Refrigerant Flow for Each Operation Mode SiEN18-622 Cooling Oil Return Operation Refrigerant Circuit...

  • Page 104: Heating Oil Return Operation & Defrost Operation

    SiEN18-622 Refrigerant Flow for Each Operation Mode Heating Oil Return Operation & Defrost Operation Refrigerant Circuit...
  • Page 105 Refrigerant Flow for Each Operation Mode SiEN18-622 Refrigerant Circuit...

  • Page 106: Part 5 Function

    SiEN18-622 Part 5 Function 1. Operation Mode ..................94 2. Basic Control..................95 2.1 Normal Operation ...................95 2.2 Compressor PI Control................96 2.3 Electronic Expansion Valve PI Control...........99 2.4 Cooling Operation Fan Control.............100 3. Special Control..................101 3.1 Startup Control ..................101 3.2 Oil Return Operation ................102 3.3 Defrosting Operation ................104 3.4 Pump-down Residual Operation ............105 3.5 Restart Standby..................105...

  • Page 107: Operation Mode

    Operation Mode SiEN18-622 1. Operation Mode Operation in stop mode Indoor unit stop or Indoor unit thermostat ON thermostat OFF Malfunction/Standby Restart standby (Compressor stop) Pressure equalization prior to startup Malfunction/ Standby Indoor unit stop or Startup control thermostat OFF Cooling startup Pump-down •...

  • Page 108: Compressor Pi Control

    SiEN18-622 Basic Control 2. Basic Control Normal Operation Cooling Operation Actuator Operation Remarks Used for high pressure protection control, low pressure protection control, discharge pipe Compressor Compressor PI control temperature protection control, and compressor operating frequency upper limit control with inverter protection control.

  • Page 109: Compressor Pi Control

    Basic Control SiEN18-622 Compressor PI Control Compressor PI Control Carries out the compressor capacity PI control to maintain Te at constant during cooling operation and Tc at constant during heating operation to ensure stable unit performance. [Cooling operation] Controls compressor capacity to adjust Te to Te : Low pressure equivalent saturation achieve target value (TeS).
  • Page 110 SiEN18-622 Basic Control ΔD Control Receiving the capacity request signal from the indoor unit, the outdoor unit corrects its target pressure for capacity control. Controls ΔD signal from indoor unit as follows. UP control : When the UP command come from more than one indoor unit among thermostat-ON indoor units.
  • Page 111 Basic Control SiEN18-622 Heating Operation TcS = TcS initial value + KTc2 KTc2 : Correction value by ΔD signal in heating. KTc2 = 0 (without correction) During compressor frequency PI Not during compressor frequency PI control control (KTc2 = 0) Δ...

  • Page 112: Electronic Expansion Valve Pi Control

    SiEN18-622 Basic Control Electronic Expansion Valve PI Control Main Electronic Expansion Valve EV1 Control Carries out the electronic expansion valve (Y1E) PI control to maintain the evaporator outlet superheated degree (SH) at constant during heating operation to make maximum use of the outdoor unit heat exchanger (evaporator).

  • Page 113: Cooling Operation Fan Control

    Basic Control SiEN18-622 Cooling Operation Fan Control In cooling operation with low outdoor air temperature, this control is used to provide the adequate amount of circulation air with liquid pressure secured by high pressure control using outdoor unit fan. Furthermore, when outdoor temperature ≥ 20°C, the compressor will run in Step 7 or higher. When outdoor temperature ≥...

  • Page 114: Special Control

    SiEN18-622 Special Control 3. Special Control Startup Control This control is used to equalize the pressure in the front and back of the compressor prior to the startup of the compressor, thus reducing startup loads. Furthermore, the inverter is turned ON to charge the capacitor. In addition, to avoid stresses to the compressor due to oil return or else after the startup, the following control is made and the position of the four way valve is also determined.

  • Page 115: Oil Return Operation

    Special Control SiEN18-622 Oil Return Operation Oil flown from the compressor to the side of system is collected by oil-returning operation, in case of that oil in the compressor runs down. 3.2.1 Oil Return Operation in Cooling Operation [Conditions to start] The cooling oil-returning operation is started referring following conditions.
  • Page 116 SiEN18-622 Special Control 3.2.2 Oil Return Operation in Heating Operation [Conditions to start] The heating oil-returning operation is started referring following conditions. Integrated amount of displaced oil Timer (After the power is turned on, integrated operating-time is 2 hours and subsequently every 8 hours.) In addition, integrated amount of displaced oil is derived from Tc, Te, and the compressor load.

  • Page 117: Defrosting Operation

    Special Control SiEN18-622 Defrosting Operation The defrost operation is performed to solve frost on the outdoor unit heat exchanger when heating, and the heating capacity is recovered. [Conditions to start] The defrost operation is started referring following conditions. Outdoor heat exchanger heat transfer co-efficiency Temperature of heat-exchange (Tb) Low pressure equivalent saturation temperature (Te) Timer (2 hours at the minimum)

  • Page 118: Pump-Down Residual Operation

    SiEN18-622 Special Control Pump-down Residual Operation When activating compressor, if the liquid refrigerant remains in the heat-exchanger, the liquid enters into the compressor and dilutes oil therein resulting in decrease of lubricity. Therefore, the pump-down residual operation is performed to collect the refrigerant in the heat- exchanger when the compressor is down.

  • Page 119: Stopping Operation

    Special Control SiEN18-622 Stopping Operation Operation of the actuator when the system is down, is cleared up. 3.6.1 When System is in Stop Mode Actuator Operation Compressor Outdoor unit fan Four way valve Keep former condition. Main electronic expansion valve (EV1) 0 pls Subcooling electronic expansion valve (EV3) 0 pls...

  • Page 120: Protection Control

    SiEN18-622 Protection Control 4. Protection Control High Pressure Protection Control This high pressure protection control is used to prevent the activation of protection devices due to abnormal increase of high pressure and to protect compressors against the transient increase of high pressure. [In cooling operation] Pc>3.47MPa High pressure not limited...

  • Page 121: Low Pressure Protection Control

    Protection Control SiEN18-622 Low Pressure Protection Control This low pressure protection control is used to protect compressors against the transient decrease of low pressure. [In cooling operation] Low pressure not limited Pe: LP pressure sensor detection value Pe<0.25MPa Pe>0.39MPa Low pressure Hot gas SVP = OFF limited Pe<0.15MPa...

  • Page 122: Discharge Pipe Protection Control

    SiEN18-622 Protection Control Discharge Pipe Protection Control This discharge pipe protection control is used to protect the compressor internal temperature against a malfunction or transient increase of discharge pipe temperature. [INV compressor] Discharge pipe protection Value of INV compressor discharge pipe HTdi : control not limited temperature (Tdi) compensated with...

  • Page 123: Inverter Protection Control

    Protection Control SiEN18-622 Inverter Protection Control Inverter current protection control and inverter fin temperature control are performed to prevent tripping due to a malfunction, or transient inverter overcurrent, and fin temperature increase. [Inverter overcurrent protection control] Not limited •Inverter current ≤ 23.8A &...

  • Page 124: Freeze-Up Protection Control

    SiEN18-622 Protection Control Freeze-up Protection Control Outline According to the freeze prevention status sent from the BP unit. The compressor output frequency is regulated to decrease the compressor capacity in order to prevent the indoor heat exchanger from freezing. Detail Zones are produced based on the freeze prevention status signal sent from the BP unit (Indoor unit), and the freeze prevention control prevents freezing of the indoor unit.

  • Page 125: Dew Condensation Prevention Control

    Protection Control SiEN18-622 Dew Condensation Prevention Control Outline According to the dew condensation prevention status sent from the BP unit. The compressor output frequency is regulated to decrease the compressor capacity in order to prevent the indoor unit from dew condensation. Detail Zones are produced based on the dew condensation prevention status signal sent from the BP unit (Indoor unit), and the dew condensation prevention control prevents dew condensation of...

  • Page 126: Other Control

    SiEN18-622 Other Control 5. Other Control Demand Operation In order to save the power consumption, the capacity of outdoor unit is saved with control forcibly by using “Demand 1 Setting”. To operate the unit with this mode, additional setting of “Continuous Demand Setting” or external input by external control adapter is required.

  • Page 127: Bp Unit Control

    BP Unit Control SiEN18-622 6. BP Unit Control BP Unit Command Conversion 1. ΔD (room temperature − temperature setting) signals from BP units are converted to capacity up / down signal. ΔD signals from BP units are used as the capacity up / down signal in frequency commands (excludes when Powerful function is in operation).

  • Page 128: Bp Unit Electronic Expansion Valve Control

    SiEN18-622 BP Unit Control BP Unit Electronic Expansion Valve Control Purpose of the This function provides instructions regarding the absolute flow rate, relative flow rate and fully closing from the outdoor unit to the BP unit in order to ensure outdoor unit compressor safety Function and optimum refrigerating cycle of the system.

  • Page 129: Full Closing Of Electronic Expansion Valves

    BP Unit Control SiEN18-622 6.2.3 Full Closing of Electronic Expansion Valves Purpose of the The electronic expansion valves are initialized when the power is turned on. Function Details The following processes are conducted. 1. Conducts P1 pulses close when power is turned on, and sets current opening to 0 pulse (fully closing process).

  • Page 130: Sh Control In Cooling Operation

    SiEN18-622 BP Unit Control SH Control in Cooling Operation Purpose of the This function ensures appropriate refrigerant distribution when many room units are operating in the cooling mode. Function Outline The heat exchanger temperatures and gas pipe temperatures of operating room units are detected by the gas pipe thermistors, and the electronic expansion valves' flow rates are corrected so as to adjust the difference between heat exchanger temperature and gas pipe temperature of each room unit (hereafter referred to as SH) close to the target values.

  • Page 131: Sc Control In Heating Operation

    BP Unit Control SiEN18-622 Note: 1. In Sky Air models, the indoor units are equipped with distribution capillary tubes; therefore, the heat exchangers may superheat even when the condition is met. 2. In Sky Air models, the heat exchanger intermediate position is provided on the liquid connection pipe side;...

  • Page 132: Indoor Unit (Ra Models)

    SiEN18-622 Indoor Unit (RA Models) 7. Indoor Unit (RA Models) Power-Airflow Dual Flaps, Wide Angle Louvers and Auto-Swing Power-airflow The large flaps send a large volume of air downwards to the floor. The flap provides an optimum Dual Flaps control area in cooling, heating and dry mode. Heating Mode During heating mode, the large flap enables direct warm air straight downwards.

  • Page 133: Fan Speed Control For Indoor Units

    Indoor Unit (RA Models) SiEN18-622 Fan Speed Control for Indoor Units Control Mode The airflow rate can be automatically controlled depending on the difference between the set temperature and the room temperature. This is done through phase control and Hall IC control. For more information about Hall IC, refer to the troubleshooting for fan motor on page 325.

  • Page 134: Programme Dry Function

    SiEN18-622 Indoor Unit (RA Models) Programme Dry Function Programme dry function removes humidity while preventing the room temperature from lowering. Since the microcomputer controls both the temperature and air flow volume, the temperature adjustment and fan adjustment buttons are inoperable in this mode. In Case of The microcomputer automatically sets the temperature and fan settings.

  • Page 135: Automatic Operation

    Indoor Unit (RA Models) SiEN18-622 Automatic Operation Automatic Cooling / Heating Function (Heat Pump Only) When the AUTO mode is selected with the remote control, the microcomputer automatically determines the operation mode from cooling and heating according to the room temperature and setting temperature at the time of the operation startup, and automatically operates in that mode.

  • Page 136: Thermostat Control

    SiEN18-622 Indoor Unit (RA Models) Thermostat Control Thermostat control is based on the difference between the room temperature and the setpoint. Thermostat OFF Condition The temperature difference is in the zone A. Thermostat ON Condition The temperature difference is above the zone C after being in the zone A. The system resumes from defrost control in any zones except A.

  • Page 137: Night Set Mode

    Indoor Unit (RA Models) SiEN18-622 Night Set Mode When the OFF timer is set, the Night Set circuit automatically activates. The Night Set circuit maintains the airflow setting made by users. The Night Set The Night Set circuit continues heating or cooling the room at the set temperature for the first Circuit one hour, then automatically raises the temperature setting slightly in the case of cooling, or lowers it slightly in the case of heating, for economical operations.

  • Page 138: Econo Mode

    SiEN18-622 Indoor Unit (RA Models) ECONO Mode Outline 20-35 Class The "ECONO mode" reduces the maximum operating current and power consumption by approx. 30% during start up etc.. This mode 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 139: Intelligent Eye (Wall Mounted Type Only)

    Indoor Unit (RA Models) SiEN18-622 INTELLIGENT EYE (Wall Mounted Type Only) 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 no human in the room in order to save electricity.
  • Page 140 SiEN18-622 Indoor Unit (RA Models) Since the set temperature is shifted by 2°C higher for 40 minutes, compressor speed becomes low and can realize energy saving operation. But as thermostat is prone to be off by the fact that the set temperature has been shifted, the thermostat-off action is prohibited in 40 minutes so as to prevent this phenomena.

  • Page 141: Home Leave Operation

    Indoor Unit (RA Models) SiEN18-622 7.10 HOME LEAVE Operation Outline In order to respond to the customer's need for immediate heating and cooling of the room after returning home or for house care, a measure to switch the temperature and air volume from that for normal time over to outing time by one touch is provided.

  • Page 142: Inverter Powerful Operation

    SiEN18-622 Indoor Unit (RA Models) 7.11 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. Details of the When POWERFUL button is pushed in each operation mode, the fan speed / setting Control temperature will be converted to the following states in a period of twenty minutes.

  • Page 143: Other Functions

    Indoor Unit (RA Models) SiEN18-622 7.12 Other Functions 7.12.1 Hot Start Function Heat Pump Only In order to prevent the cold air blast that normally comes when heating is started, the temperature of the heat exchanger of the indoor unit is detected, and either the air flow is stopped or is made very weak thereby carrying out comfortable heating of the room.
  • Page 144 SiEN18-622 Indoor Unit (RA Models) 7.12.5 Photocatalytic Deodorizing Filter Photocatalytic Deodorizing Filter demonstrates powerful oxidation characteristics when subjected to harmless ultraviolet light. Photocatalytic deodorizing power is recovered simply by exposing the filter to the sun for 6 hours once every 6 months. 7.12.6 Air-Purifying Filter A double structure made up of a bacteriostatic filter and an Air-Purifying Filter traps dust, mildew, mites, tobacco smoke, and allergy-causing pollen.

  • Page 145: Indoor Unit (Skyair Models)

    Indoor Unit (SkyAir Models) SiEN18-622 8. Indoor Unit (SkyAir Models) Function Outline FFQ-B, FCQ-B FBQ-B, FHQ-B (Input) (Output) Indoor Unit Thermostat Control Two thermostats used, suction Suction Sensor(R1T) and remote controller. Fan Motor Monitoring Function Drain Pump Heat Exchanger Sensor Cool/Heat Automatic Optional for FHQ (R2T)

  • Page 146: Electric Function Parts

    SiEN18-622 Indoor Unit (SkyAir Models) Electric Function Parts FFQ – B Capacity Remarks Wired remote control BRC1C61 Optional Accessory Infrared remote Heat pump BRC7E530W Optional control Accessory Cooling only BRC7E531W Electronic control unit [2P095006-2] EC0226 Fan motor [3P104408-1] 4P 55W Fan motor capacitor 4μF [440VAC] Float switch...

  • Page 147: Function Details

    Indoor Unit (SkyAir Models) SiEN18-622 Function Details Thermostat Control Initial setting Set temperature Cooling thermostat ON Cooling thermostat OFF Heating thermostat OFF Heating thermostat ON Freeze-up The thermostat turns OFF under the following temperature conditions to prevent freezing of the Protection indoor unit heat exchanger.

  • Page 148: Function

    SiEN18-622 Indoor Unit (SkyAir Models) Condensation Avoidance Continuous 30 minutes operation of cooling One hour drying Control (FHQ Only) After continuous 30 minutes of operation with downward The unit operation can be reset with changing operation horizontal blade position, change the blade position to mode into "heating"...
  • Page 149 Indoor Unit (SkyAir Models) SiEN18-622 1-2 Operations when an occurrence of water level abnormality 1-2-a) Behavior between occurrence and recovery of water level abnormality After compressor stops due to water level abnormality, drain pump is operated intermittently, i.e. 5 min ON, 5 sec OFF and 5 min ON.
  • Page 150 SiEN18-622 Indoor Unit (SkyAir Models) 2. Heating 2-1 Basic operation In heating operation of the unit equipped with a humidifier, when "Interlocking of drain pump / humidifier" (15(25)-3) is set to "yes" (02), the drain pump operates 20-min OFF and 3-min ON repeatedly during compressor is in operation.
  • Page 151 Indoor Unit (SkyAir Models) SiEN18-622 2-2-a)-2 When a water level abnormality occurs during drain pump OFF The abnormality is determined when 80 seconds elapse from compressor stop. Other than above, behavior is same as 2-2-a). Occurrence of drain water level abnormality Intermittent operation (*1) 5min 5min...
  • Page 152 SiEN18-622 Indoor Unit (SkyAir Models) Using Conditions Remote control thermostat is equipped only in wired remote control. for Remote Even when “use remote control thermostat” is selected in service mode, the remote control thermostat may not be used. Control < Conditions not to use > Thermostat 1.
  • Page 153 Indoor Unit (SkyAir Models) SiEN18-622 Program Dry The points of thermostat ON or OFF are determined according to the suction air temperature at Operation the startup of unit operation. The set temperature and flow rate are not displayed on remote control. Function Operation startup Thermostat...
  • Page 154 SiEN18-622 Indoor Unit (SkyAir Models) Fan and Flap Operations Flap Remote Control FHQ, FFQ, Indication Heating Hot Start from Defrost In Swing Horizontal Swing Operation Operation In Airflow Horizontal Set Position Direction Setting Defrost In Swing Horizontal Swing Operation In Airflow Horizontal Set Position Direction Setting...
  • Page 155 Indoor Unit (SkyAir Models) SiEN18-622 Mode Conflict [Overview] While the indoor unit for another room and the outdoor unit are operating, when the indoor unit for the own room is activated, the operation mode which can be selected in the own room has some restrictions as mentioned below.
  • Page 156 SiEN18-622 Indoor Unit (SkyAir Models) Non-operating [Overview] Room Dew After operating an indoor unit for the own room in the cooling mode or dry mode, stop the unit using the remote control. Under the condition, when an unit for another room is started Prevention Fan operation in the heating mode, the fan in the own room may rotate in the LL mode even though Control...
  • Page 157 Indoor Unit (SkyAir Models) SiEN18-622 Function...

  • Page 158: Test Operation

    SiEN18-622 Part 6 Test Operation 1. Test Operation ..................146 1.1 Procedure and Outline..............146 2. Outdoor Unit PCB Layout..............151 3. Field Setting ..................152 3.1 Field Setting from Outdoor Unit ..........152 3.2 Detail of Setting Mode ..............161 4. Field Setting for SkyAir Indoor Unit .............170 4.1 Explanation .................170 4.2 Field Setting................171 4.3 Initial Setting Contents..............172...

  • Page 159: Procedure And Outline

    Test Operation SiEN18-622 1. Test Operation Procedure and Outline Follow the following procedure to conduct the initial test operation after installation. 1.1.1 Check work prior to turn power supply on Is the power supply single-phase 220-230V / 50Hz? Check the below items. Have you finished a ductwork to drain? 2Power wiring Have you detach transport fitting?
  • Page 160 SiEN18-622 Test Operation 1.1.3 Judging and reprogramming in case of redundant BP addresses The BP unit of this system is provided with specific addresses in its production stage. These addresses are used to conduct various controls. If by any chance (on 3 out of 260000 units) these addresses are redundant, the system may get in trouble.
  • Page 161 Test Operation SiEN18-622 Example of DIP switch (DS2) settings on the BP unit's PCB DS2-1 DS2-2 DS2-3 DS2-4 BP unit 1 BP unit 2 BP unit 3 DS1~4 : Factory setting is OFF. The BP unit 1 through 3 show the first through third unit, respectively. The order of these units is flexible.

  • Page 162: Check Operation

    SiEN18-622 Test Operation 1.1.7 Check Operation * During check operation, mount front panel to avoid the misjudging. * Check operation is mandatory for normal unit operation. (When the check operation is not executed, alarm code "U3" will be displayed.) Press and hold the TEST The test operation is started automatically.
  • Page 163 Test Operation SiEN18-622 1.1.8 Confirmation on Normal Operation • Conduct normal unit operation after the check operation has been completed. (When outdoor air temperature is 30°CDB or higher, the unit can not be operated with heating mode. See the installation manual attached.) •...

  • Page 164: Outdoor Unit Pcb Layout

    SiEN18-622 Outdoor Unit PCB Layout 2. Outdoor Unit PCB Layout Outdoor Unit PCB (The LED indicator status shown at left LED indicator status Turn off Turn on Flicker Turn on or off indicates the status at factory set.) Reactor Curing range Curing this range with Changeover between an insulating sheet...

  • Page 165: Field Setting

    Field Setting SiEN18-622 3. Field Setting Field Setting from Outdoor Unit 3.1.1 Setting by Dip Switches The following field settings are made by dip switches on PC board. Dipswitch Setting item Description Setting Cool / Heat Used to set cool / heat change over setting by remote DS1-1 change over control equipped with outdoor unit.
  • Page 166 SiEN18-622 Field Setting Caution DIP switch Setting after changing the main PCB(A1P) to spare parts PCB When you change the main PCB(A1P) to spare parts PCB, please carry out the following setting. Please Attach the Capacity Setting Adapter corresponding to Capacity Class (ex. 112, 140, 160) in connector X51A. (See Below) Capacity Setting Adapter Capacity Class...
  • Page 167 Field Setting SiEN18-622 Setting by pushbutton switches The following settings are made by pushbutton switches on PCB. LED indication (Factory setting) MODE RETURN TEST RESET (V2760) There are the following three setting modes. Setting mode 1 (H1P off) Initial status (when normal) : Also indicates during “abnormal”. Setting mode 2 (H1P on) Used to modify the operating status and to set program addresses, etc.
  • Page 168 SiEN18-622 Field Setting a. “Setting mode 1” This mode is used to set and check the following items. 1. Set items ············ In order to make COOL/HEAT selection in a batch of outdoor unit group, change the setting. • COOL/HEAT selection (IND) ·····················Used to select COOL or HEAT by individual outdoor unit (factory set).
  • Page 169 Field Setting SiEN18-622 b. “Setting mode 2” Setting item Description Cool/heat unified Sets address for cool/heat unified operation. Push and hold the MODE (BS1) address button for 5 seconds and set to Low noise/demand Address for low noise/demand operation “Setting mode 2”. address Used to conduct test operation without making changes Test operation...
  • Page 170 SiEN18-622 Field Setting Setting item display C/H selection Setting condition display MODE TEST Demand Setting item noise Master Slave ∗ Factory set 8777777 ∗ Address Binary number 8777778 Cool / Heat Unified address (6 digits) 8788888 8777777 ∗ Address Binary number 8777778 Low noise/demand address...
  • Page 171 Field Setting SiEN18-622 Setting item display C/H selection Setting condition display MODE TEST Demand Setting item noise Master Slave ∗ Factory set Level 1 (outdoor fan with 8 step or lower) 8777778 8777787 ∗ 25 Low noise setting Level 2 (outdoor fan with 7 step or lower) Level 3 (outdoor fan with 6 step or lower) 8777877 About 20:00...
  • Page 172 SiEN18-622 Field Setting c. Monitor mode LED display Setting item Data display To enter the monitor mode, push the 9 7 7 7 7 7 7 Various setting See below MODE (BS1) button when in “Setting 9 7 7 7 7 7 8 C/H unified address mode 1”.
  • Page 173 Field Setting SiEN18-622 Push the SET button and match with the LEDs No. 1 - 15, push the RETURN button, and confirm the data for each setting. H Data such as addresses and number of units is expressed as binary numbers; the two ways of expressing are as follows: The No.

  • Page 174: Detail Of Setting Mode

    SiEN18-622 Field Setting Detail of Setting Mode 3.2.1 Cool / Heat Mode Switching There are the following 4 cool/heat switching modes. Set cool/heat separately for each outdoor unit system by indoor unit remote control. Set cool/heat separately for each outdoor unit system by cool/heat switching remote control. Set cool/heat for more than one outdoor unit system simultaneously in accordance with unified master outdoor unit by indoor unit remote control.
  • Page 175 Field Setting SiEN18-622 Set Cool / Heat Separately for Each Outdoor Unit System by Cool/Heat Switching Remote Control It does not matter whether or not there is outdoor - outdoor unit wiring. Set outdoor unit PC board DS1-1 to OUT (factory set). Set cool/heat switching to IND (individual) for “Setting mode 1”...

  • Page 176: Setting Of Low Noise Operation And Demand Operation

    SiEN18-622 Field Setting 3.2.2 Setting of Low Noise Operation and Demand Operation Setting of Low Noise Operation By connecting the external contact input to the low noise input of the outdoor unit external control adapter (optional), you can lower operating noise by 2-3 dB. When the low noise operation is carried out automatically at night (The external control adapter for outdoor unit is not required) 1.
  • Page 177 Field Setting SiEN18-622 Setting of Demand Operation By connecting the external contact input to the demand input of the outdoor unit external control adapter (optional), the power consumption of unit operation can be saved suppressing the compressor operating condition. Set item Condition Content Demand...
  • Page 178 SiEN18-622 Field Setting Detailed Setting Procedure of Low Noise Operation and Demand Control 1. Setting mode 1 (H1P off) In setting mode 2, push the BS1 (MODE button) one time. → Setting mode 1 is entered and H1P off. During the setting mode 1 is displayed, “In low noise operation” and “In demand control” are displayed.
  • Page 179 Field Setting SiEN18-622 : ON : OFF : Blink Setting Setting Setting No. indication Setting No. indication Setting Setting contents indication (Initial setting) contents contents H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P External low noise / (Factory...

  • Page 180: Setting Of Refrigerant Additional Charging Operation

    SiEN18-622 Field Setting 3.2.3 Setting of Refrigerant Additional Charging Operation Refrigerant additional charging operation procedure e, make sure When the outdoor unit is stopped and the entire quantity of refrigerant cannot be charged from the stop valve on the liquid sid to charge the remaining quantity of refrigerant using this procedure.
  • Page 181 Field Setting SiEN18-622 3.2.4 Setting of Refrigerant Recovery Mode When carrying out the refrigerant collection on site, fully open the respective expansion valve of indoor and outdoor units All indoor and outdoor unit’s operation are prohibited. Operation In “Setting Mode 2” with units in stop mode, set “B Refrigerant Recovery / Vacuuming mode” procedure to ON.
  • Page 182 SiEN18-622 Field Setting 3.2.6 Check Operation To prevent any trouble in the period of installation at site, the system is provided with a test operation mode enabling check for incorrect wiring, stop valve left in closed, coming out (or misplacing with suction pipe thermistor) of discharge pipe thermistor and judgment of piping length, refrigerant overcharging, and learning for the minimum opening degree of electronic expansion valve.

  • Page 183: Field Setting For Skyair Indoor Unit

    Field Setting for SkyAir Indoor Unit SiEN18-622 4. Field Setting for SkyAir Indoor Unit Explanation Field set is carried out from the remote control. At time of installation, or after maintenance inspection/repair, carry out field set according to the explanation below. Incorrect settings will cause a malfunction to occur.

  • Page 184: Field Setting

    SiEN18-622 Field Setting for SkyAir Indoor Unit Field Setting 4.2.1 Wired Remote Control Note: (Field setting must be made from the remote control in accordance with the installation conditions.) Setting can be made by changing the “Mode number”, “FIRST CODE NO.”, and “SECOND CODE NO.”.

  • Page 185: Initial Setting Contents

    Field Setting for SkyAir Indoor Unit SiEN18-622 4.2.2 Infrared Remote Control Note: If optional accessories are mounted on the indoor unit, the indoor unit setting may have to be changed. Refer to the instruction manual (optional hand book) for each optional accessory. Procedure 1.

  • Page 186: Local Setting Mode Number

    SiEN18-622 Field Setting for SkyAir Indoor Unit Local Setting Mode Number Example To set the filter sign time to “filter contamination - heavy” for all units in a group: Set mode No. to “10,” setting switch No. to “0,” and setting position No. to “02.” Table Mode Setting...

  • Page 187: Detailed Explanation Of Setting Modes

    Field Setting for SkyAir Indoor Unit SiEN18-622 Detailed Explanation of Setting Modes 4.5.1 Air Flow Direction Setting (FFQ, FCQ) Set the air flow direction of indoor units as given in the table below. (Set when optional air outlet blocking pad has been installed.) The second code No. is factory set to “01.” Setting Table Mode No.
  • Page 188 SiEN18-622 Field Setting for SkyAir Indoor Unit 4.5.5 Fan Speed Changeover When Thermostat is OFF By setting to “Set Fan Speed,” you can switch the fan speed to the set fan speed when the heating thermostat is OFF. ∗ Since there is concern about draft if using “fan speed up when thermostat is OFF,” you should take the setup location into consideration.
  • Page 189 Field Setting for SkyAir Indoor Unit SiEN18-622 Address Setting <Setting from the remote control> (It is Factory Set 1. Hold down the “ ” button and the “ ” button for at least 4 seconds, to get the FIELD SET MODE. (Indicated in the display area in the figure at below). to “1”) 2.
  • Page 190 SiEN18-622 Field Setting for SkyAir Indoor Unit After Setting Stick the Unit No. label at decoration panel air discharge outlet as well as on the back of the infrared remote control. Wireless remote controller Unit No. label Decoration panel PRECAUTIONS Set the Unit No.

  • Page 191: Centralized Group No. Setting

    Field Setting for SkyAir Indoor Unit SiEN18-622 Centralized Group No. Setting If carrying out centralized control with a central remote control and unified ON/OFF controller, you have to set the group No. for each group by remote control. To set the group No., first turn on the power supply of the central remote control, unified ON/ OFF controller and indoor unit.

  • Page 192: Maintenance Mode Setting

    SiEN18-622 Field Setting for SkyAir Indoor Unit Maintenance Mode Setting Procedure 1. Enter the field set mode. Continue to push the inspection / test operation button for a minimum of 4 seconds. 2. Enter the maintenance mode. After having entered the field set mode, continue to push the inspection / test operation button for a minimum of 4 seconds.

  • Page 193: Test Operation And Field Setting For Ra Indoor Unit

    Test Operation and Field Setting for RA Indoor Unit SiEN18-622 5. Test Operation and Field Setting for RA Indoor Unit Test Operation from the Remote Control For Heat pump In cooling mode, select the lowest programmable temperature; in heating mode, select the highest programmable temperature.

  • Page 194: Jumper Settings

    SiEN18-622 Test Operation and Field Setting for RA Indoor Unit Jumper Settings 5.2.1 When Two Units are Installed in One Room When two indoor units are installed in one room, the two infrared remote controls can be set for different addresses. How to set the different addresses Control PCB of the indoor unit (1) Remove the electrical box.

  • Page 195: System Configuration

    SiEN18-622 Part 7 System Configuration 1. System Configuration................184 1.1 Operation Instructions ................184 2. Instruction....................185 2.1 RMXS Series..................185 2.2 Wall Mounted, Duct, Floor/Ceiling, Floor Standing Type .....186 2.3 Ceiling Mounted Cassette Type ............256 2.4 Ceiling Mounted Built-in Type ..............278 2.5 Ceiling Suspended Type ..............288 System Configuration...

  • Page 196: Operation Instructions

    System Configuration SiEN18-622 1. System Configuration Operation Instructions 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 197: Instruction

    SiEN18-622 Instruction 2. Instruction RMXS Series Regarding use Super Multi Plus System air conditioner Points the customer should be aware of Comfort At startup • After the power is initially turned on, it will take approx. 10 minutes until startup. Usually the unit will start in 3 minutes. Heating operation (Not for a unit for cooling only) •...

  • Page 198: Wall Mounted, Duct, Floor/Ceiling, Floor Standing Type

    Instruction SiEN18-622 Wall Mounted, Duct, Floor/Ceiling, Floor Standing Type 2.2.1 Manual Contents and Reference Page Wall Mounted Type Model Series FTK(X)S20/25/35D FTK(X)S50/60/71B FTK(X)S50/60/71F FTK(X)S25/35E FTXS50/60/71D Read before Operation Safety Precautions Names of Parts Preparation before Operation H1 Operation AUTO, DRY, COOL, HEAT, FAN Operation H1 Adjusting the Air Flow Direction POWERFUL Operation H1...

  • Page 199: Safety Precautions

    Do not attempt to repair, relocate, modify or reinstall the air conditioner by yourself. Incorrect work will cause electric shocks, fire etc. For repairs and reinstallation, consult your Daikin dealer for advice and information. • The refrigerant used in the air conditioner is safe. Although leaks should not occur, if for some reason any refrigerant happens to leak into the room, make sure it does not come in contact with any flame as of gas heaters, kerosene heaters or gas range.

  • Page 200: Installation Site

    Instruction SiEN18-622 • To avoid oxygen deficiency, ventilate the room sufficiently if equipment with burner is used together with the air conditioner. • Before cleaning, be sure to stop the operation, turn the breaker off or pull out the supply cord.

  • Page 201: Names Of Parts

    SiEN18-622 Instruction 2.2.3 Names of Parts FTK(X)S 20/25/35 D, FTK(X)S 25/35 E Indoor Unit ON/OFF System Configuration...
  • Page 202 Instruction SiEN18-622 Outdoor Unit Indoor Unit 1. Air filter 12. Indoor Unit ON/OFF switch: 2. Titanium Apatite Photocatalytic Air- • Push this switch once to start operation. Purifying Filter: Push once again to stop it. • These filters are attached to the inside of •...

  • Page 203: Remote Control

    SiEN18-622 Instruction Remote control ECONO ON/OFF TEMP POWERFUL MODE SWING SILENT MOLD PROOF SENSOR CANCEL TIMER < > ARC433A46, A47 1. Signal transmitter: 8. SILENT button: OUTDOOR UNIT • It sends signals to the indoor unit. SILENToperation 2. Display: 9. FAN setting button: •...
  • Page 204 Instruction SiEN18-622 FTK(X)S 50/60/71 F Indoor Unit System Configuration...
  • Page 205 SiEN18-622 Instruction Outdoor Unit 50/60 class 71/80/90 class Indoor Unit 1. Air filter 14. HOME LEAVE lamp (red): 2. Titanium Apatite Photocatalytic Air- • Lights up when you use HOME LEAVE Purifying Filter Operation. (page 224) 3. Air inlet 15. Indoor Unit ON/OFF switch: 4.
  • Page 206 Instruction SiEN18-622 Remote control CANCEL TIMER ARC433A70, A71 1. Signal transmitter: 8. SILENT button: OUTDOOR UNIT • It sends signals to the indoor unit. SILENT operation (page 232) 2. Display: 9. FAN setting button: • It displays the current settings. (In this •...
  • Page 207 SiEN18-622 Instruction FTK(X)S 50/60/71 B, FTXS 50/60/71 D Indoor Unit The illustration shows a 50-class unit Main unit control panel System Configuration...
  • Page 208 Instruction SiEN18-622 Outdoor Unit Indoor Unit 1. Air filter 14. Indoor Unit ON/OFF switch: 2. Air-Purifying Filter with photocatalytic • Push this switch once to start operation. deodorizing function: Push once again to stop it. • These filters are attached to the inside of •...
  • Page 209 SiEN18-622 Instruction Remote control <ARC433A21, A22> 1. Signal transmitter: 8. SILENT button: • It sends signals to the indoor unit. for OUTDOOR UNIT SILENT operation 2. Display: 9. FAN setting button: • It displays the current settings. (In this • It selects the air flow rate setting.
  • Page 210 Instruction SiEN18-622 CDK(X)S 25/35/50/60 C, FDK(X)S 25/35/50/60 C, CDXS 25/35/50/60 D, CDK(X)S 25/35 E, FDKS 25/35 E Indoor Unit System Configuration...
  • Page 211 SiEN18-622 Instruction Outdoor Unit Indoor Unit 1. Air outlet 10. Indoor Unit ON/OFF switch: 2. Air outlet grille: (Field supply) • Push this switch once to start operation. • Appearance of the Air outlet grille and Air Push once again to stop it. inlet grille may differ with some models •...
  • Page 212 Instruction SiEN18-622 Remote control 〈ARC433A7, 8〉 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. (In this 8. SILENT button: OUTDOOR UNIT SILENT illustration, each section is shown with all its operation displays ON for the purpose of explanation.)

  • Page 213: Indoor Unit

    SiEN18-622 Instruction FVXS 35/50 B Indoor Unit Opening the front grille How to open the front grille: Air outlet selection switch 12 13 • This setting blows air from upper outlet only. This setting automatically decides a blow • pattern depending on mode and conditions. •...
  • Page 214 Instruction SiEN18-622 Outdoor Unit Indoor Unit 1. Photocatalytic deodorizing filter and Air • The operation mode refers to the following purifying filter: table. • These filters are attached to the inside of Temperature Air flow the air filters. Mode setting rate 2.
  • Page 215 SiEN18-622 Instruction Remote Control HOME LEAVE ON/OFF TEMP POWERFUL MODE SWING SILENT CANCEL TIMER < > ARC433A5 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) •...
  • Page 216 Instruction SiEN18-622 FLXS 25/35/50/60 B Indoor Unit The indoor unit can be installed either to the ceiling or to a wall. The descriptions contained in this manual show the case when installation is being carried out to the ceiling. (The methods of operation used are the same when installing to a wall.) Opening the front grille How to open the front grille: CAUTION...
  • Page 217 SiEN18-622 Instruction Outdoor Unit Indoor Unit 1. Louvers (vertical blades): 13. Indoor unit ON/OFF switch: The louvers are inside of the air outlet. • Push this switch once to start operation. 2. Air outlet Push once again to stop it. 3.
  • Page 218 Instruction SiEN18-622 Remote Control HOME LE AV E ON/OFF TEMP POWERFUL MODE FA N SWING SILENT CANCEL TIMER < > ARC433A5 1. Signal transmitter: 7. MODE selector button: • It sends signals to the indoor unit. • It selects the operation mode. 2.

  • Page 219: Preparation Before Operation

    SiEN18-622 Instruction 2.2.4 Preparation before Operation To set the batteries 1. Press with a finger and slide the Position + and – correctly! front cover to take it off. 2. Set two dry batteries (AAA). 3. Set the front cover as before. ATTENTION About batteries •...
  • Page 220 Instruction SiEN18-622 To operate the remote control • To use the remote control, aim the transmitter at the indoor unit. If there is anything to block signals between the unit and the remote control, such as a curtain, the unit will not operate. Reciever •...

  • Page 221: To Set The Clock

    SiEN18-622 Instruction To set the clock 1. Press “CLOCK button”. 0:00 is displayed. blinks. 2. Press “TIMER setting button” to set the clock to the present time. Holding down “ ” or “ ” button rapidly increases or decreases the time display. 3.

  • Page 222: Auto Dry Cool Heat Fan Operation

    Instruction SiEN18-622 2.2.5 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 1. Press “MODE” selector button and select an operation mode.

  • Page 223: To Change The Air Flow Rate Setting

    SiEN18-622 Instruction 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 224: Adjusting The Air Flow Direction

    Instruction SiEN18-622 2.2.6 Adjusting the Air Flow Direction FTK(X)S 20/25/35 D, FTK(X)S 25/35 E You can adjust the air flow 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 225 SiEN18-622 Instruction To adjust the vertical blades (louvers) Hold the knob and move the louvers. (You will find a knob on the left-side and the right-side blades.) • When the unit is installed in the corner of a room, the direction of the louvers should be facing away from the wall.
  • Page 226 Instruction SiEN18-622 FTK(X)S 50/60/71 F(B), FTXS 50/60/71 D 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 227 SiEN18-622 Instruction To 3-D Airflow 1. 3. Press the “SWING button ” and the “SWING button ”: the “ ” and “ ” display will light up and the flap and louvers will move in turn. To cancel 3-D Airflow 2.
  • Page 228 Instruction SiEN18-622 FVXS 35/50 B 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. 2. When the flap has reached the desired position, press “SWING button”...

  • Page 229: Air Flow Selection

    SiEN18-622 Instruction Air flow selection • Make air flow selection according to what suits you. When setting the air flow selection switch to • Air conditioner automatically decides the appropriate blowing pattern depending on the operating mode/situation. Operating mode Situation Blowing pattern •...
  • Page 230 Instruction SiEN18-622 FLXS 25/35/50/60 B To adjust the horizontal blade (flap) 1. Press “SWING button”. • “ ” is displayed on the LCD. 2. When the flap has reached the desired position, press “SWING button” once more. • The flap will stop moving. HOME LEAVE ON/OFF TEMP...
  • Page 231 SiEN18-622 Instruction 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 angle.

  • Page 232: Powerful Operation

    Instruction SiEN18-622 2.2.7 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 233: Outdoor Unit Silent Operation

    SiEN18-622 Instruction 2.2.8 OUTDOOR UNIT SILENT Operation OUTDOOR UNIT SILENT 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 SILENT operation 1.

  • Page 234: Econo Operation

    Instruction SiEN18-622 2.2.9 ECONO Operation ECONO operation is a function which enables efficient operation by lowering the maximum power consumption value. To start ECONO operation 1. Press “ECONO button”. • “ ” is displayed on the LCD. To cancel ECONO operation 2.
  • Page 235 SiEN18-622 Instruction 2.2.10 MOLD PROOF Operation MOLD PROOF operation is a function which reduces the spread of mold by using Fan mode to lower the humidity inside the indoor unit. To set MOLD PROOF operation 1. Press and hold the MOLD PROOF button for two seconds.
  • Page 236 Instruction SiEN18-622 2.2.11 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”. • “ ” is displayed on the LCD. •...
  • Page 237 SiEN18-622 Instruction 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. You can start your favorite operation mode simply by pressing the HOME LEAVE button on the remote control.

  • Page 238: Intelligent Eye Operation

    Instruction SiEN18-622 2.2.12 INTELLIGENT EYE Operation FTK(X)S 20/25/35 D, FTK(X)S 25/35E “INTELLIGENT EYE” is the infrared sensor which detects the human movement. To start INTELLIGENT EYE operation 1. Press “SENSOR button”. • “ ” is displayed on the LCD. To cancel the INTELLIGENT EYE operation 2.
  • Page 239 SiEN18-622 Instruction “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 240 Instruction SiEN18-622 FTK(X)S 50/60/71 F(B), FTXS 50/60/71 D “INTELLIGENT EYE” is the infrared sensor which detects the human movement. To start INTELLIGENT EYE operation 1. Press “SENSOR button”. • “ ” is displayed on the LCD. To cancel the INTELLIGENT EYE operation 2.
  • Page 241 SiEN18-622 Instruction “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 242: Timer Operation

    Instruction SiEN18-622 2.2.13 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 243: To Use On Timer Operation

    SiEN18-622 Instruction 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”. 6:00 is displayed. • • “ “blinks. 2. Press “TIMER Setting button” until the time setting reaches the point you like.

  • Page 244: Note For Multi System

    Instruction SiEN18-622 2.2.14 Note for Multi System <<What is a “Multi System”? >> This system has one outdoor unit connected to multiple indoor units. Selecting the Operation Mode 1. With the Priority Room Setting present but room Outdoor inactive or not present unit When more than one indoor unit is operating, room...

  • Page 245: Priority Room Setting

    SiEN18-622 Instruction Priority Room Setting The Priority Room Setting requires initial programming during installation. Please consult your retailer or dealer for assistance. The room designated as the Priority Room takes priority in the following situations: 1. Operation Mode Priority As the operation mode of the Priority Room takes precedence, the user can select a different operation mode from other rooms.

  • Page 246: Care And Cleaning

    Instruction SiEN18-622 2.2.15 Care and cleaning FTK(X)S 20/25/35 D, FTK(X)S 25/35 E CAUTION Before cleaning, be sure to stop the operation and turn the breaker OFF. UNITS Indoor unit, Outdoor unit and Remote control 1. Wipe them with dry soft cloth. Front panel 1.

  • Page 247: Air Filter

    SiEN18-622 Instruction FILTERS 1. Open the front panel. 2. Pull out the air filters. • Push a little upwards the tab at the center of each air filter, then pull it down. 3. Take off the Titanium Apatite Photocatalytic Air-Purifying Filter. •...

  • Page 248: Before A Long Idle Period

    Instruction SiEN18-622 NOTE • Operation with dirty filters: (1) cannot deodorize the air. (2) cannot clean the air. (3) results in poor heating or cooling. (4) may cause odour. • To order Titanium Apatite Photocatalytic Air-Purifying Filter contact to the service shop where you bought the air conditioner.

  • Page 249: Front Panel

    SiEN18-622 Instruction FTK(X)S 50/60/71 F CAUTION Before cleaning, be sure to stop the operation and turn the breaker OFF. UNITS Indoor unit, outdoor unit and remote control 1. Wipe them with dry soft cloth. Front panel 1. Open the front panel. •...
  • Page 250 Instruction SiEN18-622 Filters 1. Open the front panel. 2. Pull out the air filters. • Push a little upwards the tab at the center of each air filter, then pull it down. 3. Take off the Titanium Apatite Photodcatalytic Air-Purifying Filter. tabs (3 at top) •...
  • Page 251 SiEN18-622 Instruction NOTE • Operation with dirty filters: (1) cannot deodorize the air. (2) cannot clean the air. (3) results in poor heating or cooling. (4) may cause odour. • To order Titanium Apatite Photocatalytic Air-Purifying Filter contact the service shop where you bought the air conditioner.

  • Page 252: Front Grille

    Instruction SiEN18-622 FTK(X)S 50/60/71 B, FTXS 50/60/71 D CAUTION Before cleaning, be sure to stop the operation and turn the breaker OFF. UNITS Indoor unit, Outdoor unit and Remote control 1. Wipe them with dry soft cloth. Front grille 1. Open the front grille. •...
  • Page 253 SiEN18-622 Instruction FILTERS 1. Open the front panel. 2. Pull out the air filters. • Push a little upwards the tab at the center of each air filter, then pull it down. 3. Take off the air purifying filter with tabs (3 tabs at top) photocatalytic deodorizing function.
  • Page 254 Instruction SiEN18-622 Check Check that the base, stand and other fittings of the outdoor unit are not decayed or corroded. Check that nothing blocks the air inlets and the outlets of the indoor unit and the outdoor unit. Check that the drain comes smoothly out of the drain hose during COOL or DRY operation. •...

  • Page 255: Cleaning The Air Filter

    SiEN18-622 Instruction CDK(X)S 25/35/50/60 C, FDK(X)S 25/35 C, CDXS 25/35/50/60 D CAUTION • Only a qualified service person is allowed to perform maintenance. • Before cleaning, be sure to stop the operation and turn the breaker OFF. Cleaning the air filter 1.
  • Page 256 • Clean the drain pan periodically, or drain piping may be clogged with dust and may result in water leakage.Ask your DAIKIN dealer to clean them. • Prepare a cover locally to prevent any dust in the air around the indoor unit from getting in the drain pan, if there is a great deal of dust present.
  • Page 257 SiEN18-622 Instruction CDK(X)S 25/35 E, FDKS 25/35 E, FDK(X)S 50/60 C CAUTION • Only a qualified service person is allowed to perform maintenance. • Before cleaning, be sure to stop the operation and turn the breaker OFF. Cleaning the air filter 1.
  • Page 258 • Clean the drain pan periodically, or drain piping may be clogged with dust and may result in water leakage. Ask your DAIKIN dealer to clean them. • Prepare a cover locally to prevent any dust in the air around the indoor unit from getting in the drain pan, if there is a great deal of dust present.
  • Page 259 SiEN18-622 Instruction FVXS 35/50 B CAUTION Before cleaning, ve sure to stop the operation and turn the breaker OFF. UNITS Indoor unit, Outdoor unit and Remote control 1.Wipe them with dry soft cloth. Front grille 1. Open the front grille. •...
  • Page 260 Instruction SiEN18-622 FILTERS 1. Open the front grille. 2. Remove the air filter. • Press the claws on the right and left of the air filter down slightly, then pull upward. 3. Take off the air purifying filter, Photocatalytic deodorizing filter. •...
  • Page 261 SiEN18-622 Instruction Check Check that the base, stand and other fittings of the outdoor unit are not decayed or corroded. Check that nothing blocks the air inlets and the outlets of the indoor unit and the outdoor unit. Check that the drain comes smoothly out of the drain hose during COOL or DRY operation. •...
  • Page 262 Instruction SiEN18-622 FLXS 25/35/50/60 B CAUTION Before cleaning, be sure to stop the operation and turn the breaker OFF. UNITS Indoor unit, Outdoor unit and Remote control 1. Wipe them with dry soft cloth. Front grille 1. Open the front grille. •...
  • Page 263 SiEN18-622 Instruction FILTERS 1. Open the front grille. 2. Pull out the air filters. • Push upwards the tab at the center of each air filter, then pull it down. 3. Take off the air purifying filter, photocatalytic deodorizing filter. •...
  • Page 264 Instruction SiEN18-622 Check Check that the base, stand and other fittings of the outdoor unit are not decayed or corroded. Check that nothing blocks the air inlets and the outlets of the indoor unit and the outdoor unit. Check that the drain comes smoothly out of the drain hose during COOL or DRY operation. •...

  • Page 265: Troubleshooting

    SiEN18-622 Instruction 2.2.16 Troubleshooting These cases are not troubles The following cases are not air conditioner troubles but have some reasons. You may just continue using it. Case Explanation Operation does not start soon. • This is to protect the air conditioner. •...

  • Page 266: Check Again

    Instruction SiEN18-622 Check again Please check again before calling a repair person. Case Check The air conditioner does not operate. • Hasn’t a breaker turned OFF or a fuse blown? (OPERATION lamp is off) • Isn’t it a power failure? •...
  • Page 267 SiEN18-622 Instruction Call the service shop immediately. WARNING When an abnormality (such as a burning smell) occurs, stop operation and turn the breaker OFF. Continued operation in an abnormal condition may result in troubles, electric shocks or fire. Consult the service shop where you bought the air conditioner. Do not attempt to repair or modify the air conditioner by yourself.

  • Page 268: Ceiling Mounted Cassette Type

    Ceiling Mounted Cassette Type SiEN18-622 3. Ceiling Mounted Cassette Type FFQ 25/35/50/60 B TEST AVAILABLE TEST System Configuration...
  • Page 269 This operation manual is for the following systems with • Cooling only type standard control. Before initiating operation, contact your This system provides cooling, program dry, and fan Daikin dealer for the operation that corresponds to your operation modes. system. • Pair system...
  • Page 270 Ceiling Mounted Cassette Type SiEN18-622 For installation of separately sold component parts, 2. Safety considerations ask a specialist. Be sure to use the separately sold component parts We recommend that you read this instruction manual carefully designated by our company. before use to gain full advantage of the function of the air Incomplete installation performed by yourself may result in conditioner, and to avoid malfunction due to erroneous...
  • Page 271 SiEN18-622 Ceiling Mounted Cassette Type Do not install the air conditioner at any place where 4. Installation site flammable gas may leak out. If the gas leaks out and stays around the air conditioner, a Regarding places for installation fire may break out. •...
  • Page 272 Refer to figure 1 on page [1] • Operating procedure varies with heat pump type and This display shows the PROGRAMMED TIME cooling only type. Contact your Daikin dealer to confirm of the system start or stop. your system type. DISPLAY “...

  • Page 273: Temperature Setting

    • The movable limit of the flap is changeable. automatically until the temperature inside the air Contact your Daikin dealer for details. conditioner reaches a certain level. At this time, the remote control displays “ ”. Leave it as it stands and wait Press the AIR FLOW DIRECTION ADJUST button for a while.
  • Page 274 Ceiling Mounted Cassette Type SiEN18-622 Movement of the air flow flap When the timer is programmed to stop the system after 3 hours and start the system after 4 hours, the system will stop For the following conditions, micro computer controls the air after 3 hours and then 1 hour later the system will start.
  • Page 275 SiEN18-622 Ceiling Mounted Cassette Type How to clean the air filter (2) Push the lower part of the air filter onto the protrusion at the lower part of the suction grille, and fix the air filter Clean the air filter when the display shows “ ”...
  • Page 276 Ceiling Mounted Cassette Type SiEN18-622 3. Detach the air filter. 9. Not malfunction of the air conditioner Refer to “How to clean the air filter”. The following symptoms do not indicate air conditioner (Refer to Fig. 2) malfunction 4. Clean the suction grille. I.
  • Page 277 It is necessary to clean the inside of the indoor unit. Ask your Daikin dealer for details on cleaning the unit. • If a safety device such as a fuse, a breaker, or an earth This operation requires a qualified service person.
  • Page 278 Ceiling Mounted Cassette Type SiEN18-622 II. If the system does not properly operate except for the above mentioned case, and none of the above mentioned malfunctions is evident, investigate the system according to the following procedures. 1. If the system does not operate at all. •...
  • Page 279 SiEN18-622 Ceiling Mounted Cassette Type FCQ 35/50/60/71 B TEST AVAILABLE System Configuration...
  • Page 280 This operation manual is for the system with standard control. individual control (one remote control controls one indoor unit) Before initiating operation, contact your Daikin dealer for the system. Confirm the following if your unit is of the following operation that corresponds to your system.
  • Page 281 SiEN18-622 Ceiling Mounted Cassette Type For refrigerant leakage, consult your dealer. 2. Safety considerations When the air conditioner is to be installed in a small room, it is necessary to take proper measures so that the amount We recommend that you read this instruction manual carefully of any leaked refrigerant does not exceed the limiting before use to gain full advantage of the function of the air concentration even when it leaks.
  • Page 282 Ceiling Mounted Cassette Type SiEN18-622 Never expose little children, plants or animals directly 4. Installation site to the air flow. Adverse influence to little children, plants or animals may Regarding places for installation result. • Is the air conditioner installed at a well-ventilated Do not wash the air conditioner with water.
  • Page 283 ” (SET TEMPERATURE) • Operating procedure varies with heat pump type and This display shows the set temperature. cooling only type. Contact your Daikin dealer to confirm DISPLAY “ ” (FAN SPEED) your system type. This display shows the set fan speed.
  • Page 284 The movable limit of the flap is changeable. remote control displays “ ”. Leave it as it stands Contact your Daikin dealer for details. and wait for a while. • When the warm air stays under the ceiling and your feet are cold, we recommend that you use a circulator (a fan to circulate the air inside the room).
  • Page 285 SiEN18-622 Ceiling Mounted Cassette Type Press the AIR FLOW DIRECTION ADJUST button to select the air direction as following. Timer mode START/STOP The AIR FLOW FLAP display swings as shown left and the air flow direction Press the TIMER MODE START/STOP button several continuously varies.
  • Page 286 Ceiling Mounted Cassette Type SiEN18-622 • Keep doors and windows closed. If the doors and windows How to clean the air filter remain open, room air will flow out and cause to decrease Clean the air filter when the display shows “ ”...
  • Page 287 SiEN18-622 Ceiling Mounted Cassette Type 4. Fix the air filter How to clean the suction grille (1) Hook the air filter to a protrusion on the suction grille. 1. Open the suction grille. (2) Push the lower part of the air filter onto the protrusion at Push it downward slowly while pressing horizontally the the lower part of the suction grille, and fix the air filter buttons provided on two spots.
  • Page 288 It is necessary to clean the inside of the indoor • To protect the unit, turn on the main power switch at least unit. Ask your Daikin dealer for details on cleaning the unit. 6 hours before operation. This operation requires a qualified service person.
  • Page 289 I. If one of the following malfunctions occurs, take the mentioned malfunctions is evident, investigate the measures shown below and contact your Daikin dealer. system according to the following procedures. The system must be repaired by a qualified service person.

  • Page 290: Ceiling Mounted Built-In Type

    Ceiling Mounted Cassette Type SiEN18-622 Ceiling Mounted Built-in Type TEST AVAILABLE TEST System Configuration...
  • Page 291 NOTE 1. What to do before operation • Contact your Daikin dealer in case of changing the This operation manual is for the system with standard control. combination or setting of group control and two remote Before initiating operation, contact your Daikin dealer for the controls control sytem.
  • Page 292 SiEN18-622 Ceiling Mounted Cassette Type Do not remove the air outlet of the outdoor unit. WARNING ... The fan may get exposed and result in injury. Avoid exposure of your body directly to the cold air for Do not place items that might be damaged by water a long time, or avoid excessive exposure of your body under the indoor unit.
  • Page 293 Ceiling Mounted Cassette Type SiEN18-622 Regarding wiring 3. Operation range • All wiring must be performed by an authorized electrician. If the temperature or the humidity is beyond the following To do wiring, ask your dealer. Never do it by yourself. conditions, safety devices may work and the air •...
  • Page 294 • Operating procedure varies with heat pump type and DISPLAY “ ” (DEFROST) cooling only type. Contact your Daikin dealer to confirm Refer to “DEFROST OPERATION”. your system type. • to protect the unit, turn on the main power switch 6 hours before operation.
  • Page 295 SiEN18-622 Ceiling Mounted Cassette Type conditioner reaches a certain level. At this time, the remote Cooling, heating, automatic, fan, and program dry control displays “ ”. Leave it as it stands and wait operation for a while. Operate in the following order. •...
  • Page 296 SiEN18-622 Ceiling Mounted Cassette Type • Never place objects near the air inlet and the air outlet of the unit. It may cause deterioration in the effect or stop in Timer mode START/STOP the operation. • Turn off the main power supply switch when it is not used Press the TIMER MODE START/STOP button several for long periods of time.
  • Page 297 SiEN18-622 Ceiling Mounted Cassette Type 1. Open the suction grille NOTE Slide both knobs simultaneously as shown and then pull • Do not wash the air conditioner with hot water of more than them downward. 50°C, as doing so may result in discoloration and/or (Do the same procedure for closing).
  • Page 298 It is necessary to clean the inside of the indoor • To protect the unit, turn on the main power switch at least unit. Ask your Daikin dealer for details on cleaning the unit. 6 hours before operation. This operation requires a qualified service person.
  • Page 299 I. If one of the following malfunctions occurs, take the mentioned malfunctions is evident, investigate the measures shown below and contact your Daikin dealer. system according to the following procedures. The system must be repaired by a qualified service person.

  • Page 300: Ceiling Suspended Type

    Ceiling Mounted Cassette Type SiEN18-622 Ceiling Suspended Type TEST AVAILABLE TEST System Configuration...
  • Page 301 This system provides two other control systems beside standard control. Before initiating operation, contact your individual control (one remote control controls one indoor unit) Daikin dealer for the operation that corresponds to your system. Confirm the following if your unit is of the following system.
  • Page 302 Ceiling Mounted Cassette Type SiEN18-622 • The precautions described below are WARNING and Do not use any fuse with improper capacity. CAUTION. These are very important precautions IThe use of a piece of wire and whatnot may result in a concerning safety.

  • Page 303: Operation Range

    SiEN18-622 Ceiling Mounted Cassette Type Be sure the air conditioner is electrically grounded. HEATING Do not connect the grounding conductor to a gas pipe, water pipe, lightning arrester and the grounding conductor INDOOR OUTDOOR OUTDOOR UNIT TEMPERATURE TEMPERATURE for a telephone. Imperfect grounding work may result in an electric shock.
  • Page 304 Ceiling Mounted Cassette Type SiEN18-622 • Make sure that a separate power supply circuit is provided for this air conditioner and that all electrical DISPLAY “ ” “ ” “ ” “ ” “ ” (OPERATION MODE) work is carried out by qualified personnel according to local laws and regulations.
  • Page 305 • Operating procedure varies with heat pump type and shows “ ”. cooling only type. Contact your Daikin dealer to confirm • After 6 to 8 minutes (maximum 10 minutes) of DEFROST your system type. OPERATION, the system returns to HEATING •...
  • Page 306 Your hand may get caught if you attempt to make adjustments while the unit is swinging. A. Up and down direction • The movable limit of the flap is changeable. Contact your Daikin dealer for details. System Configuration...
  • Page 307 Ceiling Mounted Cassette Type SiEN18-622 Program timer operation 7. Optimum operation Operate in the following order. Observe the following precautions to ensure the system • The timer is operated in the following two ways. operates. • Programming the stop time ( ) ...
  • Page 308 Ceiling Mounted Cassette Type SiEN18-622 How to clean the air filter 8. Maintenance (for service personnel) Clean the air filter when the display shows “ ” Only a qualified service person is allowed to perform (TIME TO CLEAN AIR FILTER). maintenance It will display that it will operate for a set amount of time.
  • Page 309 Ceiling Mounted Cassette Type SiEN18-622 How to clean air outlet and outside panels What to do when stopping the system for a long • Clean with soft cloth. period • When it is difficult to remove stains, use water or neutral Turn on FAN OPERATION for half a day and dry the unit.
  • Page 310 If the inside of an indoor unit is extremely contaminated, the temperature distribution inside a room becomes uneven. It is necessary to clean the inside of the indoor unit. Ask your Daikin dealer for details on cleaning the unit This operation requires a qualified service person. •...
  • Page 311 MALFUNCTION CODE • If the air flow angle is not proper (Refer to AIR FLOW DIRECTION ADJUST). Measure: Notify your Daikin dealer and inform him/her of • If the doors or the windows are open. the display. Shut the doors or windows to prevent wind from coming in.
  • Page 312 SiEN18-622 Ceiling Mounted Cassette Type System Configuration...
  • Page 313 SiEN18-622 Part 8 Troubleshooting Caution for Diagnosis ...............303 1.1 Troubleshooting with the Operation Lamp (RA Indoor Unit) ....303 1.2 Troubleshooting with the LED on the SkyAir Indoor Unit .....304 1.3 Troubleshooting with the LED on the Outdoor Unit......305 1.4 Troubleshooting with the LED on the BP Unit ........306 Service Check Function..............307 2.1 RA Indoor Unit Infrared Remote Control ..........307 2.2 SkyAir Indoor Unit INSPECTION/TEST Button........311...
  • Page 314 SiEN18-622 7.1 Faulty Outdoor Unit PCB..............359 7.2 Actuation of High Pressure Switch ............360 7.3 Actuation of Low Pressure Sensor ............362 7.4 Compressor Motor Lock ...............364 7.5 Malfunction of Outdoor Unit Fan Motor ..........365 7.6 Malfunction of Moving Part of Electronic Expansion Valve (Y1E, Y3E) ...................366 7.7 Abnormal Discharge Pipe Temperature ..........368 7.8 Refrigerant Overcharged..............369...

  • Page 315: Caution For Diagnosis

    SiEN18-622 Caution for Diagnosis 1. Caution for Diagnosis Troubleshooting with the Operation Lamp (RA Indoor Unit) 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, disabling equipment operation.

  • Page 316: Troubleshooting With The Led On The Skyair Indoor Unit

    Caution for Diagnosis SiEN18-622 Caution: Operation stops suddenly. (Operation lamp blinks.) Cause of above trouble could be "Operation mode butting". Check followings; Are the operation modes all the same for indoor units connected to Multi system outdoor unit? If not set all indoor units to the same operation mode and confirm that the operation lamp is not blinking.

  • Page 317: Troubleshooting With The Led On The Outdoor Unit

    SiEN18-622 Caution for Diagnosis Troubleshooting with the LED on the Outdoor Unit There are green and orange LEDs on the PCB. The blinking green LED indicates normal equipment condition, and the OFF condition of the orange LED indicates normal equipment condition.

  • Page 318: Troubleshooting With The Led On The Bp Unit

    Caution for Diagnosis SiEN18-622 Troubleshooting with the LED on the BP Unit LEDA(H1P) LED1(H2P) LED2(H3P) LED3(H4P) LED4(H5P) (Q0395) GREEN LED-B (GREEN) NORMALLY FLASHING NORMALLY OFF INTERCOMMNICATION TO DIAGNOSIS OUTDOOR UNIT : NORMAL NORMAL FLASH ABNORMALITY → CHECK INTER-UNIT WIRING ⎯ ABNORMALITY →...

  • Page 319: Service Check Function

    SiEN18-622 Service Check Function 2. Service Check Function RA Indoor Unit Infrared Remote Control In the ARC433A series remote control, the temperature display sections on the main unit indicate corresponding codes. Check Method 1 1. When the timer cancel button is held down for 5 seconds, a “00” indication flashes on the temperature display section.
  • Page 320 Service Check Function SiEN18-622 Check Method 2 1. Enter the diagnosis mode. s ,TEMP t , MODE) simultaneously. Press the 3 buttons (TEMP (R4272) The digit of the number of tens blinks. HTry again from the start when the digit does not blink. (R4273) 2.
  • Page 321 SiEN18-622 Service Check Function 5. Press the TEMP button. s or TEMP t and change the digit until you hear the sound of “beep”. Press TEMP (R4277) 6. Diagnose by the sound. H“pi” : The both numbers of tens and units do not accord with the error code. H“pi pi”...
  • Page 322 Service Check Function SiEN18-622 Error Code List in - : Not used for troubleshooting Relation to RA Indication on Description of the Fault Details of fault the remote (Refer to the Indoor Units control indicated page.) Indoor unit in normal condition (Conduct a diagnosis of the outdoor —...

  • Page 323: Skyair Indoor Unit Inspection/Test Button

    SiEN18-622 Service Check Function SkyAir Indoor Unit INSPECTION/TEST Button Explanation The following modes can be selected by using the [Inspection/Test Operation] button on the remote control. Be sure to turn off power switch before connect or disconnect connector, or Caution parts damage may be occurred.

  • Page 324: Skyair Indoor Unit Wired Remote Control

    Service Check Function SiEN18-622 SkyAir Indoor Unit Wired Remote Control Explanation If operation stops due to malfunction, the remote control’s operation LED blinks, and malfunction code is displayed. (Even if stop operation is carried out, malfunction contents are displayed when the inspection mode is entered.) The malfunction code enables you to tell what kind of malfunction caused operation to stop.

  • Page 325: Skyair Indoor Unit Infrared Remote Control

    SiEN18-622 Service Check Function SkyAir Indoor Unit Infrared Remote Control If equipment stops due to a malfunction, the operation indicating LED on the light reception section flashes. The malfunction code can be determined by following the procedure described below. (The malfunction code is displayed when an operation error has occurred.
  • Page 326 Service Check Function SiEN18-622 Normal status Enters inspection mode from normal status when the INSPECTION/TEST button is pressed. 1. Press INSPECTION/TEST button. If no button is pressed for 1 minute, equipment returns to normal status returns to normal status. Press MODE selector When MODE selector...

  • Page 327: Sky Air Indoor Unit Error Codes And Led Indication

    SiEN18-622 Service Check Function Sky Air Indoor Unit Error Codes and LED Indication Symbols : Blinks : On : Off — : No connection with troubleshooting : High probability of malfunction : Possibility of malfunction : Low probability of malfunction —...

  • Page 328: Malfunction Code Indication By Outdoor Unit Pcb

    Service Check Function SiEN18-622 Malfunction Code Indication by Outdoor Unit PCB <Monitor mode> Contents of malfunction Malfunction To enter the monitor mode, push the code MODE (BS1) button when in “Setting In-phase malfunction of DIII-NET Detection of DIII-NET mode 1”. Abnormal discharge pressure HPS activated Abnormal suction pressure...
  • Page 329 SiEN18-622 Service Check Function 8: ON 7: OFF 9:Blink Confirmation of malfunction 1 Confirmation of malfunction 2 Confirmation of malfunction 3 Confirmation of malfunction 4 Malfunction code H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P ∗1 ∗1 ∗1...
  • Page 330 Service Check Function SiEN18-622 <Monitor mode> Contents of malfunction Malfunction To enter the monitor mode, push the code MODE (BS1) button when in “Setting Open phase/Power supply imbalance Imbalance of inverter power supply mode 1”. voltage Faulty temperature sensor of inverter Faulty thermistor of inverter fin radiation fin Gas shortage...
  • Page 331 SiEN18-622 Service Check Function 8: ON 7: OFF 9:Blink Confirmation of malfunction 1 Confirmation of malfunction 2 Confirmation of malfunction 3 Confirmation of malfunction 4 Malfunctio n code ∗1 ∗1 Display of contents of Display of contents of Display 1 of Display 2 of malfunction (first digit) malfunction in detail...

  • Page 332: List Of Malfunction Code

    List of Malfunction Code SiEN18-622 3. List of Malfunction Code 9: Blink 8: ON 7: OFF Malfunction Malfunction contents Page Referred code RA Indoor SkyAir BP Unit Outdoor Indoor Unit Unit Unit Indoor Error of external protection device — — —...
  • Page 333 SiEN18-622 List of Malfunction Code 9: Blink 8: ON 7: OFF Malfunction Malfunction contents Page Referred code RA Indoor SkyAir BP Unit Outdoor Indoor Unit Unit Unit Outdoor Malfunction of PC board — — — Unit Malfunction of inverter radiating fin temperature rise —...

  • Page 334: Troubleshooting For Ra Indoor Unit

    Troubleshooting for RA Indoor Unit SiEN18-622 4. Troubleshooting for RA Indoor Unit Indoor Unit PCB Abnormality Remote Control Display Method of Evaluation of zero-cross detection of power supply by indoor unit. Malfunction Detection Malfunction When there is no zero-cross detection in approximately 10 continuous seconds. Decision Conditions Supposed...

  • Page 335: Freeze-Up Protection Control Or High Pressure Control

    SiEN18-622 Troubleshooting for RA Indoor Unit Freeze-up Protection Control or High Pressure Control Remote Control Display Method of High pressure control (heat pump model only) Malfunction During heating operations, the temperature detected by the indoor heat exchanger thermistor is used for the high pressure control (stop, outdoor fan stop, etc.) Detection The freeze-up protection control (operation halt) is activated during cooling operation according to the temperature detected by the indoor unit heat exchanger thermistor.
  • Page 336 Troubleshooting for RA Indoor Unit SiEN18-622 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Caution Check No.06 Check the air passage. Refer to P.331 Is there any Provide sufficient air passage. short-circuit? Check the intake air filter.

  • Page 337: Fan Motor Or Related Abnormality

    SiEN18-622 Troubleshooting for RA Indoor Unit Fan Motor or Related Abnormality 4.3.1 AC Motor (Wall 20~35 C series, Duct, Floor / Ceiling) Remote Control Display Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine Malfunction abnormal fan motor operation.
  • Page 338 Troubleshooting for RA Indoor Unit SiEN18-622 4.3.2 DC Motor (Wall 20~35 D series and 50~71 class, Floor) Remote Control Display Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor operation. Malfunction Detection Malfunction...
  • Page 339 SiEN18-622 Troubleshooting for RA Indoor Unit Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.01 Turn off power supply Refer to P.330 and rotate fan by hand. Check No.02 Does fan rotate Replace fan motor.

  • Page 340: Thermistor Or Related Abnormality (Indoor Unit)

    Troubleshooting for RA Indoor Unit SiEN18-622 Thermistor or Related Abnormality (Indoor Unit) C4, C9 Remote Control Display Method of The temperatures detected by the thermistors are used to determine thermistor errors. Malfunction Detection Malfunction When the thermistor input is more than 4.96 V or less than 0.04 V during compressor Decision operation∗.

  • Page 341: Shutter Drive Motor / Shutter Limit Switch Abnormality

    SiEN18-622 Troubleshooting for RA Indoor Unit Shutter Drive Motor / Shutter Limit Switch Abnormality Remote Control Display Method of The shutter open / close performance is detected by the limit switch attached on its structure. In this way, the shutter drive motor and the shutter limit switch are checked for failure. Malfunction Detection Malfunction...

  • Page 342: Check

    Troubleshooting for RA Indoor Unit SiEN18-622 Check 4.6.1 Fan Motor Connector Output Check Check No.01 1. Check connector connection. 2. Check motor power supply voltage output (pins 4-7 and 4-8). 3. Check motor control voltage (pins 4-3). 4. Check rotation command voltage output (pins 4-2). 5.

  • Page 343: Thermistor Resistance Check

    SiEN18-622 Troubleshooting for RA Indoor Unit 4.6.3 Thermistor Resistance Check Check No.06 Remove the connectors of the thermistors on 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 344: Hall Ic Check

    Troubleshooting for RA Indoor Unit SiEN18-622 4.6.4 Hall IC Check Check No.16 1. Check the connector connection. 2. With the power ON, operation OFF, and the connector connected, check the following. ∗Output voltage of about 5 V between pins 1 and 3. ∗Generation of 3 pulses between pins 2 and 3 when the fan motor is operating.

  • Page 345: Troubleshooting For Skyair Indoor Unit

    SiEN18-622 Troubleshooting for SkyAir Indoor Unit 5. Troubleshooting for SkyAir Indoor Unit Indoor Unit PCB Abnormality Remote Control Display Applicable FFQ, FCQ, FBQ, FHQ Models Method of Check data from E²PROM. Malfunction Detection Malfunction When data could not be correctly received from the E²PROM Decision E²PROM : Type of nonvolatile memory.

  • Page 346: Malfunction Of Drain Water Level System (Float Type)

    Troubleshooting for SkyAir Indoor Unit SiEN18-622 Malfunction of Drain Water Level System (Float Type) Remote Control Display Applicable FFQ, FCQ, FBQ, FHQ Models Method of By float switch OFF detection Malfunction Detection Malfunction When rise of water level is not a condition and the float switch goes OFF. Decision Conditions Supposed...
  • Page 347 SiEN18-622 Troubleshooting for SkyAir Indoor Unit Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. If “A3” is detected by a PC board which is not mounted with X15A, the PC board is defective.

  • Page 348: Malfunction Of Drain System

    Troubleshooting for SkyAir Indoor Unit SiEN18-622 Malfunction of Drain System Remote Control Display Applicable Models Method of Water leakage is detected based on float switch ON/OFF operation while the compressor is in Malfunction non-operation. Detection Malfunction When the float switch changes from ON to OFF while the compressor is in non-operation. Decision Conditions Supposed...

  • Page 349: Indoor Unit Fan Motor Lock

    SiEN18-622 Troubleshooting for SkyAir Indoor Unit Indoor Unit Fan Motor Lock Remote Control Display Applicable Models Method of Detection by failure of signal for detecting number of turns to come from the fan motor Malfunction Detection Malfunction When number of turns can’t be detected even when output voltage to the fan is maximum Decision Conditions Supposed...

  • Page 350: Malfunction Of Indoor Unit Fan Motor

    Troubleshooting for SkyAir Indoor Unit SiEN18-622 Malfunction of Indoor Unit Fan Motor Remote Control Display Applicable FFQ, FCQ, FBQ Models Method of Detection of abnormal fan speed by signal from the fan motor Malfunction Detection Malfunction When fan speed does not increase Decision Conditions Supposed...
  • Page 351 SiEN18-622 Troubleshooting for SkyAir Indoor Unit Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.01 Turn off the power supply. Refer to P.350 Is there any foreign matter Remove the foreign matter.

  • Page 352: Swing Flap Motor Malfunction / Lock

    Troubleshooting for SkyAir Indoor Unit SiEN18-622 Swing Flap Motor Malfunction / Lock Remote Control Display Applicable Models Method of Utilizes ON/OFF of the limit switch when the motor turns. Malfunction Detection Malfunction When ON/OFF of the microswitch for positioning cannot be reversed even though the swing flap Decision motor is energized for a specified amount of time (about 30 seconds).
  • Page 353 SiEN18-622 Troubleshooting for SkyAir Indoor Unit Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. the connectors correctly connected Connect correctly. to X29A and X14A on the PC board? the limit switch's transfer Connect correctly.

  • Page 354: Malfunction Of Capacity Setting

    Troubleshooting for SkyAir Indoor Unit SiEN18-622 Malfunction of Capacity Setting Remote Control Display Applicable FFQ, FCQ, FBQ, FHQ Models Method of Capacity is determined according to resistance of the capacity setting adapter and the memory Malfunction inside the IC memory on the indoor unit PCB, and whether the value is normal or abnormal is determined.

  • Page 355: Malfunction Of Heat Exchanger Thermistor (R2T)

    SiEN18-622 Troubleshooting for SkyAir Indoor Unit Malfunction of Heat Exchanger Thermistor (R2T) Remote Control Display Applicable FFQ, FCQ, FBQ, FHQ Models Method of Malfunction detection is carried out by temperature detected by heat exchanger sensor. Malfunction Detection Malfunction When the heat exchanger thermistor becomes disconnected or shorted while the unit is running. Decision Conditions Supposed...

  • Page 356: Malfunction Of Heat Exchanger Thermistor (R3T)

    Troubleshooting for SkyAir Indoor Unit SiEN18-622 Malfunction of Heat Exchanger Thermistor (R3T) Remote Control Display Applicable FFQ, FCQ, FBQ, FHQ Models Method of Malfunction detection is carried out by temperature detected by heat exchanger sensor (R3T). Malfunction Detection Malfunction When the heat exchanger thermistor becomes disconnected or shorted while the unit is running. Decision Conditions Supposed...

  • Page 357: Malfunction Of Suction Air Thermistor

    SiEN18-622 Troubleshooting for SkyAir Indoor Unit 5.10 Malfunction of Suction Air Thermistor Remote Control Display Applicable FFQ, FCQ, FBQ, FHQ Models Method of Malfunction detection is carried out by temperature detected by suction air temperature sensor. Malfunction Detection Malfunction When the suction air temperature sensor’s thermistor becomes disconnected or shorted while Decision the unit is running.

  • Page 358: Malfunction Of Remote Control Thermistor

    Troubleshooting for SkyAir Indoor Unit SiEN18-622 5.11 Malfunction of Remote Control Thermistor Remote Control Display Applicable FFQ, FCQ, FBQ, FHQ Models Method of Even if remote control thermistor is faulty, system is possible to operate by system thermistor. Malfunction Malfunction detection is carried out by temperature detected by remote control thermistor. Detection Malfunction When the remote control thermistor becomes disconnected or shorted while the unit is running.

  • Page 359: Transmission Error (Between Indoor Unit And Remote Control)

    SiEN18-622 Troubleshooting for SkyAir Indoor Unit 5.12 Transmission Error (between Indoor Unit and Remote Control) Remote Control Display Applicable FFQ, FCQ, FBQ, FHQ Models Method of Microcomputer checks if transmission between indoor unit and remote control is normal. Malfunction Detection Malfunction When transmission is not carried out normally for a certain amount of time Decision...

  • Page 360: Transmission Error (Between Main And Sub Remote Control)

    Troubleshooting for SkyAir Indoor Unit SiEN18-622 5.13 Transmission Error (between Main and Sub Remote Control) Remote Control Display Applicable FFQ, FCQ, FBQ, FHQ Models Method of In case of controlling with 2- remote control, check the system using microcomputer if signal Malfunction transmission between indoor unit and remote control (main and sub) is normal.

  • Page 361: Malfunction Of Field Setting Switch

    SiEN18-622 Troubleshooting for SkyAir Indoor Unit 5.14 Malfunction of Field Setting Switch Remote Control Display Applicable FFQ, FCQ, FBQ, FHQ Models Method of Malfunction Detection Malfunction Incorrect field setting Decision Conditions Supposed Indoor-Outdoor (BP) transmission line Causes Faulty remote control wiring Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 362: Check

    Troubleshooting for SkyAir Indoor Unit SiEN18-622 5.15 Check Check No. 01 Check for Fan Motor Connector (Power Supply Line) (1) Turn the power supply off. With the relay connector disconnected, measure the resistance between UVW phases of the connector (3 cores) at the motor side, then make sure that the resistance between each phase is balanced and not short-circuited.
  • Page 363 SiEN18-622 Troubleshooting for SkyAir Indoor Unit Check No. 02 Check for Thermistors Disconnect the thermistor connector from PCB, then measure the resistance by using a tester. Unit : kΩ Thermistor temperature and resistance characteristics Temperature °C -6.0 90.8 88.0 -4.0 81.7 79.1 -2.0...

  • Page 364: Troubleshooting For Bp Unit

    Troubleshooting for BP Unit SiEN18-622 6. Troubleshooting for BP Unit Malfunction of Electronic Expansion Valve Remote Control Display Method of Detection by checking continuity and lack of connector. Malfunction Detection Malfunction Malfunction is determined by no common voltage applied when turning the power supply on. Decision Conditions Supposed...

  • Page 365: Faulty Bp Unit Pcb

    SiEN18-622 Troubleshooting for BP Unit Faulty BP Unit PCB Remote Control Display Method of Check data from E²PROM Malfunction Detection Malfunction When data could not be correctly received from the E²PROM Decision E²PROM : Type of nonvolatile memory. Maintains memory contents even when the power supply is turned off.

  • Page 366: Faulty Bp Liquid Or Gas Pipe Thermistor

    Troubleshooting for BP Unit SiEN18-622 Faulty BP Liquid or Gas Pipe Thermistor Remote Control Display Method of Malfunction Detection Malfunction When the BP liquid or gas pipe temperature sensor became short-circuited or open. Decision Conditions Supposed Faulty BP liquid or gas pipe temperature sensor Causes Faulty connectors connection of BP liquid or gas pipe temperature sensor Troubleshooting...

  • Page 367: Transmission Error Between Indoor Unit And Bp Unit

    SiEN18-622 Troubleshooting for BP Unit Transmission Error between Indoor Unit and BP Unit Outdoor Unit Indication Method of The data received from the BP unit in indoor unit-BP unit signal transmission is checked Malfunction whether it is normal. Detection Malfunction When the data sent from the BP unit cannot be received normally, or when the content of the Decision data is abnormal.
  • Page 368 Troubleshooting for BP Unit SiEN18-622 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Push and hold the RESET button on Check No.14 the outdoor unit PCB for 5 seconds Refer to P.358 Does the malfunction Normal...

  • Page 369: Transmission Error Between Outdoor Unit And Bp Unit

    SiEN18-622 Troubleshooting for BP Unit Transmission Error between Outdoor Unit and BP Unit Outdoor Unit Indication Method of Transmission error is detected when the outdoor unit could not received the data from BP unit Malfunction correctly. Detection Malfunction When the data from BP unit could not be correctly received continuously for 10 minutes Decision Conditions Supposed...

  • Page 370: Check

    Troubleshooting for BP Unit SiEN18-622 Check 6.6.1 Power Supply Waveforms Check Check No.14 Measure the power supply waveform between pins 1 and 3 on the terminal board, and check the waveform disturbance. Check to see if the power supply waveform is a sine wave (Fig.1). Check to see if there is waveform disturbance near the zero cross (sections circled in Fig.2) [Fig.1] [Fig.2]...

  • Page 371: Troubleshooting For Outdoor Unit

    SiEN18-622 Troubleshooting for Outdoor Unit 7. Troubleshooting for Outdoor Unit Faulty Outdoor Unit PCB Remote Control Display Applicable AII outdoor unit models Models Method of Check data from E²PROM Malfunction Detection Malfunction When data could not be correctly received from the E²PROM Decision E²PROM : Type of nonvolatile memory.

  • Page 372: Actuation Of High Pressure Switch

    Troubleshooting for Outdoor Unit SiEN18-622 Actuation of High Pressure Switch Remote Control Display Applicable AII outdoor unit models Models Method of Abnormality is detected when the contact of the high pressure protection switch opens. Malfunction Detection Malfunction Error is generated when the HPS activation count reaches the number specific to the operation mode.
  • Page 373 SiEN18-622 Troubleshooting for Outdoor Unit Troubleshooting Check No.01 Be sure to turn off power switch before connect or disconnect connector, Refer to P.404 Caution or parts damage may be occurred. Check for the points shown below. 1 Is the stop valve open? 2 Is the HPS connector properly connected to the main PCB? 3 Does the high pressure switch have continuity?

  • Page 374: Actuation Of Low Pressure Sensor

    Troubleshooting for Outdoor Unit SiEN18-622 Actuation of Low Pressure Sensor Remote Control Display Applicable AII outdoor unit models Models Method of Abnormality is detected by the pressure value with the low pressure sensor. Malfunction Detection Malfunction Error is generated when the low pressure is dropped under specific pressure. Operating pressure:0.07MPa Decision Conditions...
  • Page 375 SiEN18-622 Troubleshooting for Outdoor Unit Troubleshooting Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Caution Check No.02 Refer to P.405 Is the stop Open the stop valve. valve open? 1 Mount a pressure gauge on the low-pressure service port. 2 Connect the Service Checker.

  • Page 376: Compressor Motor Lock

    Troubleshooting for Outdoor Unit SiEN18-622 Compressor Motor Lock Remote Control Display Applicable AII outdoor unit models Models Method of Inverter PCB takes the position signal from UVW line connected between the inverter and Malfunction compressor, and the malfunction is detected when any abnormality is observed in the phase- current waveform.

  • Page 377: Malfunction Of Outdoor Unit Fan Motor

    SiEN18-622 Troubleshooting for Outdoor Unit Malfunction of Outdoor Unit Fan Motor Remote Control Display Applicable AII outdoor unit models Models Method of Malfunction of fan motor system is detected according to the fan speed detected by Hall IC Malfunction when the fan motor runs. Detection Malfunction When the fan runs with speed less than a specified one for 6 seconds or more when the fan...

  • Page 378: Malfunction Of Moving Part Of Electronic Expansion Valve (Y1E, Y3E)

    Troubleshooting for Outdoor Unit SiEN18-622 Malfunction of Moving Part of Electronic Expansion Valve (Y1E, Y3E) Remote Control Display Applicable AII outdoor unit models Models Method of Check disconnection of connector Malfunction Check continuity of expansion valve coil Detection Malfunction Error is generated under no common power supply when the power is on. Decision Conditions Supposed...
  • Page 379 SiEN18-622 Troubleshooting for Outdoor Unit Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Turn power supply off, and turn power supply on again. Return to normal? External factor other than malfunction (for example, noise etc.).

  • Page 380: Abnormal Discharge Pipe Temperature

    Troubleshooting for Outdoor Unit SiEN18-622 Abnormal Discharge Pipe Temperature Remote Control Display Applicable AII outdoor unit models Models Method of Abnormality is detected according to the temperature detected by the discharge pipe Malfunction temperature sensor. Detection Malfunction When the discharge pipe temperature rises to an abnormally high level When the discharge pipe temperature rises suddenly Decision Conditions...

  • Page 381: Refrigerant Overcharged

    SiEN18-622 Troubleshooting for Outdoor Unit Refrigerant Overcharged Remote Control Display Applicable All outdoor unit models Models Method of Excessive charging of refrigerant is detected by using the heat exchanging deicer temperature Malfunction during a check operation. Detection Malfunction When the amount of refrigerant, which is calculated by using the heat exchanging deicer temperature during a check run, exceeds the standard.

  • Page 382: Malfunction Of Thermistor For Outdoor Air (R1T)

    Troubleshooting for Outdoor Unit SiEN18-622 Malfunction of Thermistor for Outdoor Air (R1T) Remote Control Display Applicable AII outdoor unit models Models Method of Malfunction is detected from the temperature detected by the outdoor air thermistor. Malfunction Detection Malfunction When the outside air temperature thermistor has short circuit or open circuit. Decision Conditions Supposed...

  • Page 383: Malfunction Of Discharge Pipe Thermistor (R2T)

    SiEN18-622 Troubleshooting for Outdoor Unit 7.10 Malfunction of Discharge Pipe Thermistor (R2T) Remote Control Display Applicable AII outdoor unit models Models Method of Malfunction is detected from the temperature detected by discharge pipe temperature Malfunction thermistor. Detection Malfunction When a short circuit or an open circuit in the discharge pipe temperature thermistor is detected. Decision Conditions Supposed...

  • Page 384: Malfunction Of Thermistor (R3T, R5T) For Suction Pipe1, 2

    Troubleshooting for Outdoor Unit SiEN18-622 7.11 Malfunction of Thermistor (R3T, R5T) for Suction Pipe1, 2 Remote Control Display Applicable AII outdoor unit models Models Method of Malfunction is detected from the temperature detected by the thermistor for suction pipe 1, 2. Malfunction Detection Malfunction...

  • Page 385: Malfunction Of Thermistor (R4T) For Outdoor Unit Heat Exchanger

    SiEN18-622 Troubleshooting for Outdoor Unit 7.12 Malfunction of Thermistor (R4T) for Outdoor Unit Heat Exchanger Remote Control Display Applicable AII outdoor unit models Models Method of Malfunction is detected from the temperature detected by the heat exchanger thermistor. Malfunction Detection Malfunction When a short circuit or an open circuit in the heat exchange thermistor is detected.

  • Page 386: Malfunction Of Thermistor (R7T) For Outdoor Unit Liquid Pipe

    Troubleshooting for Outdoor Unit SiEN18-622 7.13 Malfunction of Thermistor (R7T) for Outdoor Unit Liquid Pipe Remote Control Display Applicable AII outdoor unit models Models Method of Malfunction is detected from the temperature detected by the liquid pipe thermistor. Malfunction Detection Malfunction When a short circuit or an open circuit in the heat exchange thermistor is detected.

  • Page 387: Malfunction Of Subcooling Heat Exchanger Thermistor (R6T)

    SiEN18-622 Troubleshooting for Outdoor Unit 7.14 Malfunction of Subcooling Heat Exchanger Thermistor (R6T) Remote Control Display Applicable AII outdoor unit models Models Method of Malfunction is detected according to the temperature detected by subcooling heat exchanger Malfunction gas pipe thermistor. Detection Malfunction When the subcooling heat exchanger gas pipe thermistor is short circuited or open.

  • Page 388: Malfunction Of High Pressure Sensor

    Troubleshooting for Outdoor Unit SiEN18-622 7.15 Malfunction of High Pressure Sensor Remote Control Display Applicable AII outdoor unit models Models Method of Malfunction is detected from the pressure detected by the high pressure sensor. Malfunction Detection Malfunction When the high pressure sensor is short circuit or open circuit. Decision Conditions Supposed...

  • Page 389: Malfunction Of Low Pressure Sensor

    SiEN18-622 Troubleshooting for Outdoor Unit 7.16 Malfunction of Low Pressure Sensor Remote Control Display Applicable AII outdoor unit models Models Method of Malfunction is detected from pressure detected by low pressure sensor. Malfunction Detection Malfunction When the low pressure sensor is short circuit or open circuit. Decision Conditions Supposed...

  • Page 390: Malfunction Of Pcb

    Troubleshooting for Outdoor Unit SiEN18-622 7.17 Malfunction of PCB Remote Control Display Applicable AII outdoor unit models Models Method of Detect malfunctions by current value during waveform output before compressor startup. Malfunction Detect malfunctions by current sensor value during synchronized operation at the time of startup.

  • Page 391: Malfunction Of Inverter Radiating Fin Temperature Rise

    SiEN18-622 Troubleshooting for Outdoor Unit 7.18 Malfunction of Inverter Radiating Fin Temperature Rise Remote Control Display Applicable AII outdoor unit models Models Method of Fin temperature is detected by the thermistor of the radiation fin. Malfunction Detection Malfunction When the temperature of the inverter radiation fin increases above 83°C. Decision Conditions Supposed...

  • Page 392: Inverter Compressor Abnormal

    Troubleshooting for Outdoor Unit SiEN18-622 7.19 Inverter Compressor Abnormal Remote Control Display Applicable AII outdoor unit models Models Method of Malfunction is detected from current flowing in the power transistor. Malfunction Detection Malfunction When an excessive current flows in the power transistor. Decision (Instantaneous overcurrent also causes activation.) Conditions...

  • Page 393: Inverter Current Abnormal

    SiEN18-622 Troubleshooting for Outdoor Unit 7.20 Inverter Current Abnormal Remote Control Display Applicable AII outdoor unit models Models Method of Malfunction is detected by current flowing in the power transistor. Malfunction Detection Malfunction When overload in the compressor is detected. Decision Conditions Supposed...

  • Page 394: Inverter Start Up Error

    Troubleshooting for Outdoor Unit SiEN18-622 7.21 Inverter Start up Error Remote Control Display Applicable AII outdoor unit models Models Method of Malfunction is detected from current flowing in the power transistor. Malfunction Detection Malfunction When overload in the compressor is detected during startup Decision Conditions Supposed...

  • Page 395: Malfunction Of Transmission Between Inverter And Control Pcb

    SiEN18-622 Troubleshooting for Outdoor Unit 7.22 Malfunction of Transmission between Inverter and Control PCB Remote Control Display Applicable AII outdoor unit models Models Method of Check the communication state between inverter PCB and control PCB by micro-computer. Malfunction Detection Malfunction When the correct communication is not conducted in certain period.

  • Page 396: High Voltage Of Capacitor In Main Inverter Circuit

    Troubleshooting for Outdoor Unit SiEN18-622 7.23 High Voltage of Capacitor in Main Inverter Circuit Remote Control Display Applicable All outdoor unit models Models Method of Malfunction is detected according to the voltage waveform of main circuit capacitor built in the Malfunction inverter.

  • Page 397: Malfunction Of Inverter Radiating Fin Temperature Rise Sensor

    SiEN18-622 Troubleshooting for Outdoor Unit 7.24 Malfunction of Inverter Radiating Fin Temperature Rise Sensor Remote Control Display Applicable AII outdoor unit models Models Method of Resistance of radiation fin thermistor is detected when the compressor is not operating. Malfunction Detection Malfunction When the resistance value of thermistor becomes a value equivalent to open or short circuited Decision...

  • Page 398: Faulty Combination Of Inverter And Fan Driver

    Troubleshooting for Outdoor Unit SiEN18-622 7.25 Faulty Combination of Inverter and Fan Driver Remote Control Display Applicable AII outdoor unit models Models Method of Check the communication state between inverter PCB and control PCB by micro-computer. Malfunction Detection Malfunction When the communication data about inverter PCB type is incorrect. Decision Conditions Supposed...

  • Page 399: Low Pressure Drop Due To Refrigerant Shortage Or Electronic Expansion Valve Failure

    SiEN18-622 Troubleshooting for Outdoor Unit 7.26 Low Pressure Drop Due to Refrigerant Shortage or Electronic Expansion Valve Failure Remote Control Display Applicable AII outdoor unit models Models Method of Short of gas malfunction is detected by discharge pipe temperature thermistor and low pressure Malfunction saturation temperature.
  • Page 400 Troubleshooting for Outdoor Unit SiEN18-622 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Low pressure is Out of gas, closing of stop Cooling 0.25 MPa valve or refrigerant system or less.

  • Page 401: Power Supply Insufficient Or Instantaneous Failure

    SiEN18-622 Troubleshooting for Outdoor Unit 7.27 Power Supply Insufficient or Instantaneous Failure Remote Control Display Applicable AII outdoor unit models Models Method of Detection of voltage of main circuit capacitor built in the inverter and power supply voltage. Malfunction Detection Malfunction When the abnormal voltage of main circuit capacitor built in the inverter and abnormal power Decision...
  • Page 402 Troubleshooting for Outdoor Unit SiEN18-622 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.03 Is the power supply voltage Refer to P.406 Correct power supply 200~240V ±10%? Is the P-N resistance not less than Field factors...

  • Page 403: Check Operation Not Executed

    SiEN18-622 Troubleshooting for Outdoor Unit 7.28 Check Operation not Executed Remote Control Display Applicable AII outdoor unit models Models Method of Check operation is executed or not Malfunction Detection Malfunction Malfunction is decided when the unit starts operation without check operation. Decision Conditions Supposed...

  • Page 404: Malfunction Of Transmission Between Indoor Units And Outdoor Units

    Troubleshooting for Outdoor Unit SiEN18-622 7.29 Malfunction of Transmission between Indoor Units and Outdoor Units Remote Control Display Applicable AII indoor unit models Models AII outdoor unit models Method of Microcomputer checks if transmission between indoor and outdoor units is normal. Malfunction Detection Malfunction...
  • Page 405 SiEN18-622 Troubleshooting for Outdoor Unit Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Has the indoor or outdoor unit PC board been replaced, or has the indoor - outdoor Push and hold the RESET or outdoor - outdoor button on the master outdoor...

  • Page 406: Malfunction Of Transmission Between Remote Control And Indoor Unit

    Troubleshooting for Outdoor Unit SiEN18-622 7.30 Malfunction of Transmission between Remote Control and Indoor Unit Remote Control Display Applicable AII indoor unit models Models Method of In case of controlling with 2-remote control, check the system using microcomputer is signal Malfunction transmission between indoor unit and remote control (main and sub) is normal.

  • Page 407: Malfunction Of Transmission Between Main And Sub Remote Controls

    SiEN18-622 Troubleshooting for Outdoor Unit 7.31 Malfunction of Transmission between Main and Sub Remote Controls Remote Control Display Applicable AII indoor unit models Models Method of In case of controlling with 2-remote control, check the system using microcomputer if signal Malfunction transmission between indoor unit and remote control (main and sub) is normal.

  • Page 408: Malfunction Of Transmission Between Indoor And Outdoor Units In The Same System

    Troubleshooting for Outdoor Unit SiEN18-622 7.32 Malfunction of Transmission between Indoor and Outdoor Units in the Same System Remote Control Display Applicable AII indoor unit models Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Malfunction of transmission within or outside of other system Causes Malfunction of electronic expansion valve in indoor unit of other system Defect of PCB of indoor unit in other system...
  • Page 409 SiEN18-622 Troubleshooting for Outdoor Unit Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. "U9"has been displayed for 2 Re-diagnose by display after minutes or more. passage of 2 minutes or more. Turn on all indoor units.

  • Page 410: Excessive Number Of Indoor Units

    Troubleshooting for Outdoor Unit SiEN18-622 7.33 Excessive Number of Indoor Units Remote Control Display Applicable AII indoor unit models Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Excess of connected indoor units Causes Defect of outdoor unit PCB (A1P) Mismatching of the refrigerant type of indoor and outdoor unit.

  • Page 411: Address Duplication Of Central Remote Control

    SiEN18-622 Troubleshooting for Outdoor Unit 7.34 Address Duplication of Central Remote Control Remote Control Display Applicable AII indoor unit models Models Method of Malfunction Detection Malfunction Decision Conditions Supposed Address duplication of centralized remote control Causes Defect of indoor unit PCB Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution...

  • Page 412: Malfunction Of Transmission Between Central Remote Control And Indoor Unit

    Troubleshooting for Outdoor Unit SiEN18-622 7.35 Malfunction of Transmission between Central Remote Control and Indoor Unit Remote Control Display Applicable AII indoor unit models Models Centralized controller Method of Microcomputer checks if transmission between indoor unit and centralized remote control is Malfunction normal.
  • Page 413 SiEN18-622 Troubleshooting for Outdoor Unit Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. an indoor unit once connected been Reset power supply removed or its address simultaneously for all changed? optional controllers for centralized control.

  • Page 414: System Is Not Set Yet

    Troubleshooting for Outdoor Unit SiEN18-622 7.36 System is not Set yet Remote Control Display Applicable All indoor unit models All outdoor unit models Models Method of On check operation, the number of indoor units in terms of transmission is not corresponding to Malfunction that of indoor units that have made changes in temperature.

  • Page 415: Malfunction Of System, Refrigerant System Address Undefined

    SiEN18-622 Troubleshooting for Outdoor Unit 7.37 Malfunction of System, Refrigerant System Address Undefined Remote Control Display Applicable All indoor unit models Models All outdoor unit models Method of Malfunction Detection Malfunction Decision Conditions Supposed Improper connection of transmission wiring between outdoor unit and outdoor unit outside Causes control adapter Defect of indoor unit PCB...

  • Page 416: Check

    Check SiEN18-622 8. Check Check No.01 Check for causes of rise in high pressure Referring to the Fault Tree Analysis (FTA) shown below, probe the faulty points. ←Check to be sure the stop valve is open. Stop valve closed Local High pipe ←Conduct visual checks for pipe conditions.
  • Page 417 SiEN18-622 Check Check No.02 Check for causes of drop in low pressure Referring to the Fault Tree Analysis (FTA) shown below, probe the faulty points. [In cooling] ←Are the electrical characteristics normal? Faulty low pressure sensor (See *1.) Faulty compressor ←Is the pressure value checked with the Service Checker Faulty low Faulty control PCB...
  • Page 418 Check SiEN18-622 Check No. 03 Check for Fan Motor Connector (1) Turn the power supply off. (2) With the fan motor connector disconnected, measure the resistance between each pin, then make sure that the resistance is more than the value mentioned in the following table. 1 White Measurement point Judgment...

  • Page 419: Thermistor Resistance / Temperature Characteristics

    SiEN18-622 Thermistor Resistance / Temperature Characteristics 9. Thermistor Resistance / Temperature Characteristics Indoor unit For air suction For liquid pipe For gas pipe Outdoor unit For outdoor air Outdoor unit for fin thermistor For suction pipe 1 For heat exchanger For suction pipe 2 For Subcooling heat exchanger outlet R6T For Liquid pipe...
  • Page 420 Thermistor Resistance / Temperature Characteristics SiEN18-622 Outdoor Unit Thermistors for Discharge Pipe (R2T) (kΩ) T°C T°C T°C 640.44 624.65 72.32 70.96 13.35 13.15 609.31 594.43 69.64 68.34 12.95 12.76 579.96 565.78 67.06 65.82 12.57 12.38 552.00 538.63 64.60 63.41 12.20 12.01 525.63 512.97...

  • Page 421: Pressure Sensor

    SiEN18-622 Pressure Sensor 10.Pressure Sensor = 1.38V-0.69 : Detected Pressure [High Side] MPa = 0.57V-0.28 : Detected Pressure [Low Side] MPa Detected Pressure : High pressure (MPa) : Output Voltage [High Side] V : Low pressure (MPa) : Output Voltage [Low Side] V V : Voltage (V) High Pressure (P Low Pressure (P...

  • Page 422: Method Of Replacing The Inverter's Power Transistors Modules

    Method of Replacing The Inverter’s Power Transistors Modules SiEN18-622 11.Method of Replacing The Inverter’s Power Transistors Modules Checking failures in power semiconductors mounted on inverter PCB Check the power semiconductors mounted on the inverter PCB by the use of a multiple tester. <Items to be prepared>...
  • Page 423 SiEN18-622 Method of Replacing The Inverter’s Power Transistors Modules Power module checking When using the digital type of multiple tester, make measurement in diode check mode. Tester terminal Criterion Remark Not less than 0.3V It may take time to (including ∞)* determine the voltage due to capacitor...
  • Page 424 Method of Replacing The Inverter’s Power Transistors Modules SiEN18-622 Troubleshooting...

  • Page 425: Part 9 Appendix

    SiEN18-622 Part 9 Appendix 1. Piping Diagrams..................414 1.1 Outdoor Units ..................414 1.2 BP Units ....................415 1.3 Indoor Units ..................416 2. Wiring Diagrams..................422 2.1 Outdoor Units ..................422 2.2 BP Units ....................424 2.3 Indoor Units ..................426 Appendix...

  • Page 426: Piping Diagrams

    Piping Diagrams SiEN18-622 1. Piping Diagrams Outdoor Units RMKS112/140/160EV1A, RMKS112/140/160EVM RMXS112/140/160EV1A, RMXS112/140/160EVLT Electronic expansion valve Electronic Double pipe expansion valve heat exchanger Filter Heat exchanger Pressure regulating valve Filter Service port Four way valve High pressure Service port sensor Low pressure sensor Filter Capillary...

  • Page 427: Bp Units

    SiEN18-622 Piping Diagrams BP Units BPMKS967A2, BPMKS967B2B Indoor unit Gas side Room A Refrigerant flow Thermistor ( DGA ) ( 15.9CuT ) Heating LOCAL PIPING Cooling GAS SIDE Room B Thermistor ( DGB ) ( 15.9CuT ) LOCAL PIPING Electronic Expansion valve ( BYPASS ) Electronic Indoor unit...

  • Page 428: Indoor Units

    Piping Diagrams SiEN18-622 Indoor Units 1.3.1 Wall Mounted Type FTKS20/25/35DVMA FTXS20/25/35DVMA FTKS25/35DVM FTXS25/35EVMA FTKS25/35EVMA FTXS20/25/35DVMT Indoor unit Indoor unit Maffler assy Heat exchanger Maffler assy Heat exchanger 7.0CuT 7.0CuT 6.4CuT 6.4CuT Thermistor 6.4CuT Thermistor 6.4CuT on heat exch. on heat exch. 6.4CuT 6.4CuT Cross flow fan...
  • Page 429 SiEN18-622 Piping Diagrams FTKS71FVMA, FTKS71BVMB FTXS71FVMA, FTXS71DVMT FTKS71BVMA8 FTXS71BVMA8 Indoor unit Indoor unit ( 7.9CuT ) ( 7.9CuT ) Heat exchanger Heat exchanger Thermistor Thermistor on heat exch. on heat exch. Cross flow fan Cross flow fan Field piping Field piping ( 6.4CuT ) ( 6.4CuT ) Fan motor...
  • Page 430 Piping Diagrams SiEN18-622 1.3.3 Floor / Ceiling Suspended Dual Type FLXS25/35BVMA FLXS50/60BVMA Indoor unit Indoor unit ( 6.4CuT ) ( 9.5CuT ) Heat exchanger Heat exchanger Thermistor Field piping Field piping Thermistor on heat ( 6.4CuT ) ( 6.4CuT ) on heat exch.
  • Page 431 SiEN18-622 Piping Diagrams 1.3.4 Floor Standing Type FVXS35BVMA Indoor unit Heat exchanger Thermistor on heat Cross flow fan Fan motor exch. 7.0CuT 7.0CuT Cross flow fan Fan motor Field piping ( 6.4CuT ) Single union joint Field piping 9.5CuT ( 9.5CuT ) Single union joint Refrigerant flow Cooling...
  • Page 432 Piping Diagrams SiEN18-622 1.3.5 Ceiling Mounted Cassette Type FFQ25/35/50/60B8V1B Indoor heat exchanger MODEL FFQ25 · 35B8V1B FFQ50 · 60B8V1B 12.7 Field piping φ C1220T-O Outdoor unit Field piping φ C1220T-O Indoor unit C : 4D039335 FCQ35/50/60/71BVE Indoor heat exchanger φ Field piping C1220T-0 φ...
  • Page 433 SiEN18-622 Piping Diagrams 1.3.6 Ceiling Mounted Built-in Type FBQ60/71BV1, FBQ60/71BVL Indoor heat exchanger φ Field piping C1220T-0 φ Field piping C1220T-0 Outdoor unit Indoor unit MODEL FHQ35BUV1B FHQ35BVV1B FCQ35BVE FHQ50 • 60BUV1B FHQ50 • 60BVV1B FCQ50 • 60BVE 12.7 FBQ60BV1, FBQ60BVL FUQ71, 100, 125BUV1B FUQ71, 100, 125BVV1B FHQ71, 100, 125BUV1B...

  • Page 434: Wiring Diagrams

    Wiring Diagrams SiEN18-622 2. Wiring Diagrams Outdoor Units RMKS112/140/160EV1A, RMKS112/140/160EVM Appendix...
  • Page 435 SiEN18-622 Wiring Diagrams RMXS112/140/160EV1A, RMXS112/140/160EVLT Appendix...

  • Page 436: Bp Units

    Wiring Diagrams SiEN18-622 BP Units BPMKS967A2 ( DLA ) ( DGA ) ( DLB ) ( DGB ) t° t° t° t° FIELD WIRING X22A ROOM B ( BLU ) X21A LEDA ROOM A INDOOR ( RED ) LED1 ROOM A LED2 TRANSMISSION X20A...
  • Page 437 SiEN18-622 Wiring Diagrams BPMKS967B2B ( DLA ) ( DGA ) ( DLB ) ( DGB ) t° t° t° t° FIELD WIRING X22A ROOM B ( BLU ) X21A LEDA ROOM A INDOOR ( RED ) LED1 ROOM A TRANSMISSION LED2 X20A CIRCUIT...

  • Page 438: Indoor Units

    Wiring Diagrams SiEN18-622 Indoor Units 2.3.1 Wall Mounted Type FTKS20/25/35DVMA, FTKS25/35DVM, FTKS25/35EVMA FTXS20/25/35DVMA, FTXS25/35EVMA FIELD WIRING. PCB3 PCB1 RECTIFIER 3.15A LED1 OUTDOOR LED2 CAUTION LED3 TRANSMISSION NOTE THAT OPERATION WILL CIRCUIT RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS TURNED OFF AND THEN BACK ON AGAIN.
  • Page 439 SiEN18-622 Wiring Diagrams FTKS50BVMB, FTKS50BVMA8 FTXS50BVMA8, FTXS50DVMT FIELD WIRING. PCB3 PCB1 RECTIFIER 3.15A OUTDOOR t° CAUTION TRANSMISSION NOTE THAT OPERATION WILL CIRCUIT RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS PCB4 TURNED OFF AND THEN BACK ON AGAIN. LED1 LED2 LED3 : FRAME GROUND : FUSE...
  • Page 440 Wiring Diagrams SiEN18-622 2.3.2 Duct Connected Type FDKS25/35CAVMB, FDKS50/60CVMB, FDKS25/35EAVMB CDKS25/35/50/60CVMA, CDKS25/35EAVMA FDXS25/35/50/60CVMA, CDXS25/35/50/60CVMA, CDXS25/35EAVMA PCB1 PCB2 V1TR outdoor 3.15A FIELD WIRING. TERMINAL FOR CAUTION CENTRALIZED CONTROL TRANSMISSION NOTE THAT OPERATION WILL CIRCUIT RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY ISTURNED OFF AND THEN BACK SIGNAL ON AGAIN.
  • Page 441 SiEN18-622 Wiring Diagrams 2.3.3 Floor / Ceiling Suspended Dual Type FLXS25/35/50/60BVMA PCB3 PCB1 PCB2 3.15A → outdoor FIELD WIRING. PCB4 / YLW 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 442 Wiring Diagrams SiEN18-622 2.3.5 Ceiling Mounted Cassette Type FFQ25/35/50/60B8V1B : CONNECTOR DISCRIMINATION COLOUR FOR COMPONENTS. : CONNECTOR COLOUR FOR COMPONENTS. : CONNECTOR COLOUR FOR PRINTED CIRCUIT BOARD. t° IN CASE OF SIMULTANEOUS t° t° OPERATION SYSTEM INDOOR UNIT INDOOR UNIT (MASTER) (SLAVE) NOTE 5...
  • Page 443 SiEN18-622 Wiring Diagrams FCQ35/50/60/71BVE :CONNECTOR DISCRIMINATION COLOUR FOR COMPONENTS. :CONNECTOR COLOUR FOR COMPONENTS. :CONNECTOR COLOUR FOR PRINTED CIRCUIT BOARD. t° t° t° X19A X18A X17A NOTE ) 3 TO BP UNIT NOTE 5 X61A NOTE 5 X24A X10A X24A X11A NOTE 3 t °...
  • Page 444 Wiring Diagrams SiEN18-622 2.3.6 Ceiling Mounted Built-in Type FBQ60/71BV1, FBQ60/71BVL :CONNECTER DISCRIMINATION COLOUR FOR COMPONENTS. :CONNECTER COLOUR FOR COMPONENTS. :CONNECTER COLOUR FOR PRINTED CIRCUIT BOARD. t° t ° t ° INDOOR UNIT WIRED REMOTE CONTROL (OPTIONAL PARTS) X19A X18A X17A X61A TO BP UNIT X10A...
  • Page 445 SiEN18-622 Wiring Diagrams 2.3.7 Ceiling Suspended Type FHQ35/50/60BVV1B : CONNECTER DISCRIMINATION COLOUR FOR COMPONENTS. : CONNECTER COLOUR FOR COMPONENTS. t° : CONNECTER COLOUR FOR PRINTED CIRCUIT BOARD. IN CASE OF SIMULTANEOUS t° t° OPERATION SYSTEM INDOOR UNIT INDOOR UNIT X19A X18A X17A (MASTER)
  • Page 446 Wiring Diagrams SiEN18-622 Appendix...

  • Page 447: Index

    SiEN18-622 Index thermistor resistance check ....331, 351 check for causes of drop in low pressure .... 405 A1 ..............322, 333 check for causes of rise in high pressure .... 404 A1P ................55 check for fan motor connector ......406 A2P ................56 check operation ...........
  • Page 448 SiEN18-622 CJ ..............346 fan speed setting ......60, 62, 64, 66, 69 E1 ..............359 faulty BP liquid or gas pipe thermistor ....354 E2 ..............353 faulty BP unit PCB ..........353 E3 ..............360 faulty combination of inverter and fan driver ..386 E4 ..............362 faulty outdoor unit PCB ........
  • Page 449 SiEN18-622 malfunction of discharge pipe thermistor (R2T) .. 371 malfunction of drain system ........ 336 J0 .................354 malfunction of drain water level system ....334 J3 .................371 malfunction of electronic expansion valve ... 352 J4 .................181 malfunction of field setting switch ......349 J5 .................372 malfunction of heat exchanger thermistor (R2T) .
  • Page 450 SiEN18-622 oil return operation ..........102 S1 .............. 60, 62, 64 ON/OFF button on indoor unit ......130 S201 ..............69 operation lamp .............303 S202 ..............69 operation mode ............94 S203 ..............69 outdoor unit identification function ......135 S204 ..............69 outdoor unit PCB layout ........151 S21 ..........
  • Page 451 SiEN18-622 thermistor X14A ..............80 indoor heat exchanger, troubleshooting X15A ........... 72, 75, 78, 80 ..........343, 344 X17A ..........54, 72, 75, 78, 80 remote control ..........346 X18A ..........54, 72, 75, 78, 80 suction air ............345 X19A ........... 72, 75, 78, 80 thermistor or related abnormality (indoor unit) ..328 X1A .............
  • Page 452 SiEN18-622 Index...

  • Page 453: Drawings & Flow Charts

    SiEN18-622 Drawings & Flow Charts wired remote control ........171 infrared remote control ........172 abnormal discharge pipe temperature ....368 freeze-up protection control ......111, 134 actuation of high pressure switch ......360 freeze-up protection control or high pressure control actuation of low pressure sensor ......362 ..............
  • Page 454 SiEN18-622 malfunction of moving part of electronic FLXS25/35BVMA .......... 418 expansion valve ..........366 FLXS50/60BVMA .......... 418 malfunction of outdoor unit fan motor ....365 FTKS20/25/35DVMA ........416 malfunction of PCB ..........378 FTKS25/35DVM ..........416 malfunction of remote control thermistor ....346 FTKS25/35EVMA ......... 416 malfunction of subcooling heat exchanger FTKS50/60BVMA8 ........
  • Page 455 SiEN18-622 swing flap motor malfunction / lock ......340 FTXS60/71DVMT ......... 427 system is not set yet ..........402 FVXS35/50BVMA ......... 429 RMKS112/140/160EV1A ......422 RMKS112/140/160EVM ........ 422 thermistor or related abnormality (indoor unit) ..328 RMXS112/140/160EV1A ......423 thermistor resistance check .........331 RMXS112/140/160EVLT ......
  • Page 456 "The present publication is drawn up by way of Daikin Europe N.V. is approved by LRQA for its Quality Daikin units comply with the European regulations that information only and does not constitute an offer Management System in accordance with the ISO9001 guarantee the safety of the product.

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