Daikin FTKS50BVMA Service Manual
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Daikin FTKS50BVMA Service Manual

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See also: Operating Manual
Service
Manual
Inverter Pair
Wall Mounted Type B-Series
[Applied Models]
Inverter Pair : Cooling Only
Inverter Pair : Heat Pump
Non-Inverter Pair : Cooling Only
Non-Inverter Pair : Heat Pump
Si04-306

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Summary of Contents for Daikin FTKS50BVMA

  • Page 1 Si04-306 Service Manual Inverter Pair Wall Mounted Type B-Series [Applied Models] Inverter Pair : Cooling Only Inverter Pair : Heat Pump Non-Inverter Pair : Cooling Only Non-Inverter Pair : Heat Pump...
  • Page 2 Inverter Pair Inverter Pair Inverter Pair Inverter Pair B-Series B-Series B-Series B-Series Cooling Only Indoor Unit <R410A> FTKS50BVMA FTKS50BVMB FTS50BVMB FTKS60BVMA FTKS60BVMB FTS60BVMB FTKS71BVMA FTKS71BVMB <R22> FTKD50BVM FTKD50BVMA FTKD50BVMT FTKD18BVMS FTKD60BVM FTKD60BVMA FTKD60BVMT FTKD24BVMS FTKD71BVM FTKD71BVMA FTKD71BVMT FTKD28BVMS Outdoor Unit <R410A>...

  • Page 3: Table Of Contents

    Si04-306 1. Introduction .....................v 1.1 Safety Cautions ..................v Part 1 List of Functions ..............1 1. List of Functions ..................2 1.1 R410A Series ...................2 1.2 R22 Series....................5 Part 2 Specifications ..............9 1. Specifications ..................10 1.1 Cooling Only - R410A Series ..............10 1.2 Cooling Only - R22 Series..............13 1.3 Heat Pump - R410A Series ..............17 1.4 Heat Pump - R22 Series ................22...
  • Page 4 Si04-306 3.13 Malfunctions ...................59 3.14 Forced Operation Mode .................60 3.15 Additional Function.................60 Part 5 System Configuration............61 1. System Configuration................62 2. Instruction....................63 2.1 Safety Precautions .................63 2.2 Names of Parts..................65 2.3 Preparation before Operation..............68 2.4 AUTO · DRY · COOL · HEAT · FAN Operation ........71 2.5 Adjusting the Air Flow Direction .............73 2.6 POWERFUL Operation ................75 2.7 OUTDOOR UNIT SILENT Operation .............76...
  • Page 5 Si04-306 Part 7 Removal Procedure ............135 1. Indoor Unit...................136 1.1 Removal of the Air Filter / Front Panel ..........136 1.2 Removal of the Front Grille ..............139 1.3 Removal of the Horizontal Blades / Vertical Blades ......141 1.4 Removal of the Electrical Box / PCB / Swing Motor ......143 1.5 Removal of the Heat Exchanger ............149 1.6 Removal of the Fan Rotor / Fan Motor..........152 2.

  • Page 6: Introduction

    Si04-306 Introduction 1. Introduction Safety Cautions Cautions and Be sure to read the following safety cautions before conducting repair work. The caution items are classified into “ Warning” and “ Caution”. The “ Warning” Warnings items are especially important since they can lead to death or serious injury if they are not followed closely.

  • Page 7: Cautions Regarding Products After Repair

    Introduction Si04-306 Caution Do not repair the electrical components with wet hands. Working on the equipment with wet hands can cause an electrical shock. Do not clean the air conditioner by splashing water. Washing the unit with water can cause an electrical shock. Be sure to provide the grounding when repairing the equipment in a humid or wet place, to avoid electrical shocks.

  • Page 8: Inspection After Repair

    Si04-306 Introduction Warning Be sure to use an exclusive power circuit for the equipment, and follow the technical standards related to the electrical equipment, the internal wiring regulations and the instruction manual for installation when conducting electrical work. Insufficient power circuit capacity and improper electrical work can cause an electrical shock or fire.

  • Page 9: Using Icons

    Introduction Si04-306 Warning Do not use a joined power cable or extension cable, or share the same power outlet with other electrical appliances, since it can cause an electrical shock, excessive heat generation or fire. Caution Check to see if the parts and wires are mounted and connected properly, and if the connections at the soldered or crimped terminals are secure.

  • Page 10: Part 1 List Of Functions

    Si04-306 Part 1 Part 1 Part 1 Part 1 List of Functions List of Functions List of Functions List of Functions 1. List of Functions ..................2 1.1 R410A Series ...................2 1.2 R22 Series....................5 List of Functions...

  • Page 11: List Of Functions

    List of Functions Si04-306 List of Functions R410A Series Category Functions Category Functions Inverter (with Inverter Power Control) Air Purifying Filter with Bacteriostatic, — — –5 –5 Virustatic Functions Operation Limit for Cooling (°CDB) Basic –15 Function Operation Limit for Heating (°CWB) —...
  • Page 12 Si04-306 List of Functions Category Functions Category Functions Inverter (with Inverter Power Control) Air Purifying Filter with Bacteriostatic, — — –10 –10 Virustatic Functions Operation Limit for Cooling (°CDB) Basic –15 Function Operation Limit for Heating (°CWB) — Photocatalytic Deodorizing Filter —...
  • Page 13 List of Functions Si04-306 Category Functions Category Functions Inverter (with Inverter Power Control) — — Air Purifying Filter with Bacteriostatic, — — –10 –10 Virustatic Functions Operation Limit for Cooling (°CDB) Basic –15 Function Operation Limit for Heating (°CWB) — Photocatalytic Deodorizing Filter —...

  • Page 14: R22 Series

    Si04-306 List of Functions R22 Series Category Functions Category Functions Inverter (with Inverter Power Control) Air Purifying Filter with Bacteriostatic, — — –5 –5 Virustatic Functions Operation Limit for Cooling (°CDB) Basic –15 Function Operation Limit for Heating (°CWB) — Photocatalytic Deodorizing Filter —...
  • Page 15 List of Functions Si04-306 Category Functions Category Functions Inverter (with Inverter Power Control) Air Purifying Filter with Bacteriostatic, — — –5 –5 Virustatic Functions Operation Limit for Cooling (°CDB) Basic –15 Function Operation Limit for Heating (°CWB) — Photocatalytic Deodorizing Filter —...
  • Page 16 Si04-306 List of Functions Category Functions Category Functions Inverter (with Inverter Power Control) Air Purifying Filter with Bacteriostatic, — Virustatic Functions Operation Limit for Cooling (°CDB) 10~46 Basic Operation Limit for Heating (°CWB) — Photocatalytic Deodorizing Filter — Function Air Purifying Filter with Photocatalytic PAM Control Deodorizing Function Oval Scroll Compressor...
  • Page 17 List of Functions Si04-306 List of Functions...
  • Page 18 Si04-306 Part 2 Part 2 Part 2 Part 2 Specifications Specifications Specifications Specifications 1. Specifications ..................10 1.1 Cooling Only - R410A Series ..............10 1.2 Cooling Only - R22 Series..............13 1.3 Heat Pump - R410A Series ..............17 1.4 Heat Pump - R22 Series ................22 Specifications...

  • Page 19: Part 2 Specifications

    Specifications Si04-306 Specifications Cooling Only - R410A Series 240V, 50Hz Indoor Units FTKS50BVMA FTKS60BVMA FTKS71BVMA Model Outdoor Units RKS50BVMA RKS60BVMA RKS71BVMA 5.0 (0.9~5.8) 6.0 (0.9~6.7) 7.1 (0.9~8.0) Capacity Btu/h 17,070 (3,070~19,800) 20,480 (3,070~22,870) 24,240 (3,070~27,310) Rated (Min.~Max.) kcal/h 4,300 (770~4,990)
  • Page 20 Si04-306 Specifications 230V, 50Hz Indoor Units FTKS50BVMB FTKS60BVMB FTKS71BVMB Model Outdoor Units RKS50BVMB RKS60BVMB RKS71BVMB 5.0 (0.9~5.8) 6.0 (0.9~6.7) 7.1 (0.9~8.0) Capacity Btu/h 17,070 (3,070~19,800) 20,480 (3,070~22,870) 24,240 (3,070~27,310) Rated (Min.~Max.) kcal/h 4,300 (770~4,990) 5,160 (770~5,760) 6,110 (770~6,880) Moisture Removal Running Current (Rated) 11.1 Power Consumption...
  • Page 21 Specifications Si04-306 230V, 50Hz Indoor Units FTS50BVMB FTS60BVMB Model Outdoor Units RS50BVMB RS60BVMB Capacity Btu/h 17,070 20,480 Rated kcal/h 4,300 5,160 Moisture Removal Running Current (Rated) Power Consumption 1,660 2,120 Rated Power Factor 98.9 99.1 3.01 2.83 φ φ Liquid Piping φ...

  • Page 22: Cooling Only - R22 Series

    Si04-306 Specifications Cooling Only - R22 Series 220-230-240V, 50Hz / 220-230V, 60Hz Indoor Units FTKD50BVM FTKD60BVM FTKD71BVM Model Outdoor Units RKD50BVM RKD60BVM RKD71BVM 5.2 (0.9~5.9) 6.2 (0.9~6.5) 7.1 (0.9~7.6) Capacity Btu/h 17,750 (3,070~20,140) 21,170 (3,070~22,190) 24,240 (3,070~25,950) Rated (Min.~Max.) kcal/h 4,470 (770~5,070) 5,330 (770~5,590) 6,110 (770~6,540)
  • Page 23 Specifications Si04-306 220-230-240V, 50Hz / 220-230V, 60Hz Indoor Units FTKD50BVMA FTKD60BVMA FTKD71BVMA Model Outdoor Units RKD50BVMA RKD60BVMA RKD71BVMA 5.2 (0.9~5.9) 6.2 (0.9~7.6) 7.1 (0.9~8.0) Capacity Btu/h 17,750 (3,070~20,140) 21,170 (3,070~22,190) 24,240 (3,070~25,950) Rated (Min.~Max.) kcal/h 4,470 (770~5,070) 5,330 (770~5,590) 6,110 (770~6,540) Moisture Removal Running Current (Rated) 7.4-7.0-6.7/7.4-7.0...
  • Page 24 Si04-306 Specifications 220V, 60Hz Indoor Units FTKD50BVMT FTKD60BVMT FTKD71BVMT Model Outdoor Units RKD50BVMT RKD60BVMT RKD71BVMT 0.9~5.9 0.9~6.5 0.9~7.6 Cooling Capacity (Min.~Max.) kcal/h 775~5,070 775~5,590 775~6,540 Moisture Removal Running Current 14.0 Power Consumption (Min.~Max.) 450~2,300 460~2,710 470~3,210 Power Factor 99.4 99.0 99.0 2.86 2.79...
  • Page 25 Specifications Si04-306 220V, 50Hz Indoor Units FTKD18BVMS FTKD24BVMS FTKD28BVMS Model Outdoor Units RKD18BVMS RKD24BVMS RKD28BVMS 5.2 (0.9~5.8) 6.1 (0.9~7.0) 7.5 (0.9~7.8) Capacity Btu/h 17,700 (3,070~19,800) 20,800 (3,070~23,900) 25,600 (3,070~26,600) Rated (Min.~Max.) kcal/h 4,470 (770~4,990) 5,250 (770~6,020) 6,450 (775~6,710) Moisture Removal Running Current (Rated) 13.7 Power Consumption...

  • Page 26: Heat Pump - R410A Series

    Si04-306 Specifications Heat Pump - R410A Series 240V, 50Hz Indoor Units FTXS50BVMA FTXS60BVMA Model RXS50BVMA RXS60BVMA Outdoor Units Cooling Heating Cooling Heating 5.0 (0.9~5.8) 5.8 (0.9~7.5) 6.0 (0.9~6.7) 7.0 (0.9~8.0) Capacity Btu/h 17,070 (3,070~19,800) 19,800 (3,070~25,610) 20,480 (3,070~22,870) 23,900 (3,070~27,310) Rated (Min.~Max.) kcal/h 4,300 (770~4,990)
  • Page 27 Specifications Si04-306 240V, 50Hz Indoor Units FTXS71BVMA Model RXS71BVMA Outdoor Units Cooling Heating 7.1 (0.9~8.0) 8.5 (0.9~9.5) Capacity Btu/h 24,240 (3,070~27,310) 29,020 (3,070~32,430) Rated (Min.~Max.) kcal/h 6,110 (770~6,880) 7,310 (770~8,170) Moisture Removal — Running Current (Rated) 10.6 11.1 Power Consumption 2,530 (450~3,070) 2,630 (450~3,800) Rated (Min.~Max.)
  • Page 28 Si04-306 Specifications 230V, 50Hz Indoor Units FTXS50BVMB FTXS60BVMB Model RXS50BVMB RXS60BVMB Outdoor Units Cooling Heating Cooling Heating 5.0 (0.9~5.8) 5.8 (0.9~7.5) 6.0 (0.9~6.7) 7.0 (0.9~8.0) Capacity Btu/h 17,070 (3,070~19,800) 19,800 (3,070~25,610) 20,480 (3,070~22,870) 23,900 (3,070~27,310) Rated (Min.~Max.) kcal/h 4,300 (770~4,990) 4,990 (770~6,450) 5,160 (770~5,760) 6,020 (770~6,880)
  • Page 29 Specifications Si04-306 230V, 50Hz Indoor Units FTXS71BVMB Model RXS71BVMB Outdoor Units Cooling Heating 7.1 (0.9~8.0) 8.5 (0.9~9.5) Capacity Btu/h 24,240 (3,070~27,310) 29,020 (3,070~32,430) Rated (Min.~Max.) kcal/h 6,110 (770~6,880) 7,310 (770~8,170) Moisture Removal — Running Current (Rated) 11.1 11.6 Power Consumption 2,530 (450~3,070) 2,630 (450~3,800) Rated (Min.~Max.)
  • Page 30 Si04-306 Specifications 230V, 50Hz Indoor Units FTYS50BVMB FTYS60BVMB Model RYS50BVMB RYS60BVMB Outdoor Units Cooling Heating Cooling Heating Capacity Btu/h 17,070 19,800 20,480 23,900 Rated kcal/h 4,300 4,990 5,160 6,020 Moisture Removal — — Running Current (Rated) Power Consumption 1,660 1,700 2,120 2,090 Rated...

  • Page 31: Heat Pump - R22 Series

    Specifications Si04-306 Heat Pump - R22 Series 220-230-240V, 50Hz / 220-230V, 60Hz Indoor Units FTXD50BVMA FTXD60BVMA Model RXD50BVMA RXD60BVMA Outdoor Units Cooling Heating Cooling Heating 5.2 (0.9~5.9) 6.5 (0.9~8.0) 6.2 (0.9~7.6) 7.2 (0.9~9.0) Capacity Btu/h 17,750 (3,070~20,140) 22,190 (3,070~27,310) 21,170 (3,070~25,950) 24,580 (3,070~30,730) Rated (Min.~Max.) kcal/h...
  • Page 32 Si04-306 Specifications 220-230-240V, 50Hz / 220-230V, 60Hz Indoor Units FTXD71BVMA Model RXD71BVMA Outdoor Units Cooling Heating 7.1 (0.9~8.0) 8.5 (0.9~9.7) Capacity Btu/h 24,240 (3,070~27,310) 29,020 (3,070~33,120) Rated (Min.~Max.) kcal/h 6,110 (770~6,880) 7,310 (770~8,340) Moisture Removal — Running Current (Rated) 11.9-11.4-10.9/11.9-11.4 11.8-11.3-10.9/11.8-11.3 Power Consumption 2,600 (450~3,350)
  • Page 33 Specifications Si04-306 220V, 60Hz Indoor Units FTXD50BVMT FTXD60BVMT Model RXD50BVMT RXD60BVMT Outdoor Units Cooling Heating Cooling Heating 0.9~5.9 0.9~8.0 0.9~6.5 0.9~8.1 Capacity (Min.~Max.) kcal/h 775~5,070 775~6,880 775~5,590 775~6,970 Moisture Removal — — Running Current 8.00 9.10 9.60 9.60 Power Consumption (Min.~Max.) 450~2,300 450~2,800 460~2,710...
  • Page 34 Si04-306 Specifications 220V, 60Hz Indoor Units FTXD71BVMT Model RXD71BVMT Outdoor Units Cooling Heating 0.9~7.6 0.9~9.0 Capacity (Min.~Max.) kcal/h 775~6,540 775~7,740 Moisture Removal — Running Current 14.0 12.6 Power Consumption (Min.~Max.) 470~3,210 470~3,600 Power Factor 99.0 99.2 2.48 3.09 φ Liquid Piping φ...
  • Page 35 Specifications Si04-306 Specifications...

  • Page 36: Part 3 Printed Circuit Board

    Si04-306 Part 3 Part 3 Part 3 Part 3 Printed Circuit Board Printed Circuit Board Printed Circuit Board Printed Circuit Board Connector Wiring Diagram Connector Wiring Diagram Connector Wiring Diagram Connector Wiring Diagram 1. Printed Circuit Board Connector Wiring Diagram........28 1.1 Indoor Unit....................28 1.2 Outdoor Unit ...................30 Printed Circuit Board Connector Wiring Diagram...

  • Page 37: Printed Circuit Board Connector Wiring Diagram

    Printed Circuit Board Connector Wiring Diagram Si04-306 1. Printed Circuit Board Connector Wiring Diagram Indoor Unit Connectors Connector for fan motor Connector for swing motor (horizontal blades) Connector for swing motor (vertical blades) Connector for centralized control (HA) 5) S26, Connector for buzzer PCB 6) S27, S29, Connector for control PCB...
  • Page 38 Si04-306 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1): Control PCB (indoor unit) (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...

  • Page 39: Outdoor Unit

    Printed Circuit Board Connector Wiring Diagram Si04-306 Outdoor Unit Connectors 1) S10, AC2, Connector for terminal strip Connector for electronic expansion valve coil 3) S31, Connector for SPM 4) S33, Connector for MID 5) S34, S52, S72, S102 Connector for control PCB CN11, CN14 HAC1,...
  • Page 40 Si04-306 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1): Control PCB (outdoor unit) FU2(3.15A) S101 (R2865) PCB(2): Power Supply PCB Service Monitor PCB FU1(30A) LED-A HAC1 S102 (R2867) (R2866) Printed Circuit Board Connector Wiring Diagram...
  • Page 41 Printed Circuit Board Connector Wiring Diagram Si04-306 FU201 (3.15A) (R2868) CN11 CN14 (R2869) Printed Circuit Board Connector Wiring Diagram...

  • Page 42: Part 4 Function And Control

    Si04-306 Part 4 Part 4 Part 4 Part 4 Function and Control Function and Control Function and Control Function and Control 1. Main Functions..................34 1.1 Frequency Principle................34 1.2 Power-Airflow Dual Flaps, Wide Angle Louvers and Auto-Swing ..36 1.3 Fan Speed Control for Indoor Units............37 1.4 Programme Dry Function ...............38 1.5 Automatic Operation................39 1.6 Night Set Mode..................40...

  • Page 43: Main Functions

    Main Functions Si04-306 1. Main Functions Note: See the list of functions for the functions applicable to different models. Frequency Principle Main Control The compressor is frequency-controlled during normal operation. The target frequency is set by the following 2 parameters coming from the operating indoor unit: Parameters The load condition of the operating indoor unit The difference between the room temperature and the set temperature...
  • Page 44 Si04-306 Main Functions Inverter Features The inverter provides the following features: The regulating capacity can be changed according to the changes in the outside temperature and cooling/heating load. Quick heating and quick cooling The compressor rotational speed is increased when starting the heating (or cooling). This enables a quick set temperature.

  • Page 45: Power-Airflow Dual Flaps, Wide Angle Louvers And Auto-Swing

    Main Functions Si04-306 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 control area in cooling, heating and dry mode. Dual Flaps Heating Mode During heating mode, the large flap enables direct warm air straight downwards.

  • Page 46: Fan Speed Control For Indoor Units

    Si04-306 Main Functions 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 97.

  • Page 47: Programme Dry Function

    Main Functions Si04-306 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 48: Automatic Operation

    Si04-306 Main Functions Automatic Operation Automatic Cooling / Heating Function (Heat Pump Only) When the AUTO mode is selected with the remote controller, 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 49: Night Set Mode

    Main Functions Si04-306 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 lowers the temperature setting slightly in the case of cooling, or raises it slightly in the case of heating, for economical operations.

  • Page 50: Intelligent Eye

    Si04-306 Main Functions Intelligent Eye 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 51 Main Functions Si04-306 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 52: Home Leave Operation

    Si04-306 Main Functions 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 53: Inverter Powerful Operation

    Main Functions Si04-306 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 temperature will be converted to the following states in a period of twenty minutes.

  • Page 54: Other Functions

    Si04-306 Main Functions 1.10 Other Functions 1.10.1 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 55: Function Of Main Structural Parts

    Function of Main Structural Parts Si04-306 2. Function of Main Structural Parts Function of Thermistor 2.1.1 Heat Pump Model Electrontic expansion valve Four way valve Compressor (R2827) Outdoor Heat 1. The outdoor heat exchanger thermistor is used for controlling target discharge temperature. Set a target discharge temperature depending on the outdoor and indoor heat exchanger Exchanger temperature.

  • Page 56: Cooling Only Model

    Si04-306 Function of Main Structural Parts 2.1.2 Cooling Only Model Electrontic expansion valve Compressor (R2828) Outdoor Heat 1. The outdoor heat exchanger thermistor is used for controlling target discharge temperature. Exchanger Set a target discharge temperature depending on the outdoor and indoor heat exchanger temperature.

  • Page 57: Control Specification

    Control Specification Si04-306 3. Control Specification Mode Hierarchy Outline There are two modes; the mode selected in user’s place (normal air conditioning mode) and forced operation mode for installation and providing service. Detail 1. For heat pump model There are following modes; stop, cooling (includes drying), heating (include defrosting) Air conditioner control mode Forced operating mode Forced cooling (for Pump Down Operation)

  • Page 58: Frequency Control

    Si04-306 Control Specification Frequency Control Outline Frequency will be determined according to the difference between room and set temperature. The function is explained as follows. 1. How to determine frequency. 2. Frequency command from an indoor unit. (The difference between a room temperature and the temperature set by the remote controller.) 3.
  • Page 59 Control Specification Si04-306 3. Determine lower limit frequency Set a maximum value as an lower limit frequency among the frequency lower limits of the following functions: Pressure difference upkeep. 4. Determine prohibited frequency There is a certain prohibited frequency such as a power supply frequency. Indoor Frequency Command ( ∆...

  • Page 60: Controls At Mode Changing / Start-Up

    Si04-306 Control Specification Controls at Mode Changing / Start-up 3.3.1 Preheating Operation Outline Operate the inverter in the open phase operation with the conditions including the preheating command (only for heat pump model) from the indoor, the outdoor air temperature and discharge pipe temperature.

  • Page 61: Discharge Pipe Temperature Control

    Control Specification Si04-306 Discharge Pipe Temperature Control Outline The discharge pipe temperature is used as the compressor's internal temperature. If the discharge pipe temperature rises above a certain level, the operating frequency upper limit is set to keep this temperature from going up further. Detail Divide the Zone (R2836)

  • Page 62: Freeze-Up Protection Control

    Si04-306 Control Specification Freeze-up Protection Control Outline During cooling operation, the signals being sent from the indoor unit allow the operating frequency limitation and then prevent freezing of the indoor heat exchanger. (The signal from the indoor unit must be divided into the zones as the followings. Detail Conditions for Start Controlling Judge the controlling start with the indoor heat exchanger temperature after 2 sec from...

  • Page 63: Fan Control

    Control Specification Si04-306 Fan Control Outline Fan control is carried out according to the following priority. 1. Fan ON control for electric component cooling fan 2. Fan control when defrosting 3. Fan OFF delay when stopped 4. ON/OFF control in cooling operation 5.

  • Page 64: Low Hz High Pressure Limit

    Si04-306 Control Specification 3.10 Low Hz High Pressure Limit Outline Heat Pump Only Set the upper limit of high pressure in a low Hz zone. Set the upper limit of the indoor heat exchanger temperature by its operating frequency of Hz. Separate into three zones, reset zone, unchanged zone and drooping zone and the frequency control must be carried out in such zones.

  • Page 65: Electronic Expansion Valve Control

    Control Specification Si04-306 3.12 Electronic Expansion Valve Control Outline The following items are included in the electronic expansion valve control. Electronic expansion valve is fully closed 1. Electronic expansion valve is fully closed when turning on the power. 2. Pressure equalizing control Open Control 1.

  • Page 66: Discharge Pipe

    Si04-306 Control Specification 3.12.1 Fully Closing with Power ON Initialize the electronic expansion valve when turning on the power, set the opening position and develop pressure equalizing. 3.12.2 Pressure Equalization Control When the compressor is stopped, open and close the electronic expansion valve and develop pressure equalization.
  • Page 67 Control Specification Si04-306 3.12.7 Control when frequency is changed When the target discharge pipe temperature control is active, if the target frequency is changed for a specified value in a certain time period, cancel the target discharge pipe temperature control and change the target opening of the electronic expansion valve according to the shift. 3.12.8 Target Discharge Pipe Temperature Control Obtain the target discharge pipe temperature from the indoor and outdoor heat exchanger...

  • Page 68: Malfunctions

    Si04-306 Control Specification 3.13 Malfunctions 3.13.1 Sensor Malfunction Detection Sensor malfunction may occur either in the thermistor or current transformer (CT) system. Relating to Thermistor Malfunction 1. Outdoor heat exchanger thermistor 2. Discharge pipe thermistor 3. Fin thermistor 4. Outside air thermistor Relating to CT Malfunction When the output frequency is more than 55 Hz and the input current is less than 1.25A, carry out abnormal adjustment.

  • Page 69: Forced Operation Mode

    Control Specification Si04-306 3.14 Forced Operation Mode Outline Forced operating mode includes only forced cooling. Detail Forced Cooling Item Forced Cooling Forced operation 1) The outdoor unit is not abnormal allowing conditions and not in the 3-minute stand-by mode. 2) The operating mode of the outdoor unit is the stop mode.

  • Page 70: Part 5 System Configuration

    Si04-306 Part 5 Part 5 Part 5 Part 5 System Configuration System Configuration System Configuration System Configuration 1. System Configuration................62 2. Instruction....................63 2.1 Safety Precautions .................63 2.2 Names of Parts..................65 2.3 Preparation before Operation..............68 2.4 AUTO · DRY · COOL · HEAT · FAN Operation ........71 2.5 Adjusting the Air Flow Direction .............73 2.6 POWERFUL Operation ................75 2.7 OUTDOOR UNIT SILENT Operation .............76...

  • Page 71: System Configuration

    System Configuration Si04-306 1. System Configuration After the installation and test operation of the room air conditioner have been completed, it should be operated and handled as described below. Every user would like to know the correct method of operation of the room air conditioner, to check if it is capable of cooling (or heating) well, and to know a clever method of using it.

  • Page 72: Instruction

    • 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 73: Installation Site

    Instruction Si04-306 • Do not stand or sit on the outdoor unit. Do not place any object on the unit to avoid injury, do not remove the fan guard. • Do not place anything under the indoor or outdoor unit that must be kept away from moisture. In certain conditions, moisture in the air may condense and drip.

  • Page 74: Names Of Parts

    Si04-306 Instruction Names of Parts I Indoor Unit I Main unit control panel System Configuration...

  • Page 75: I Outdoor Unit

    Instruction Si04-306 I Outdoor Unit I I I I Indoor Unit 1. Air filter 13. HOME LEAVE lamp (red): • Lights up when you use HOME LEAVE 2. Photocatalytic deodorizing filter or Operation. (page 16.) Air purifying filter: • These filters are attached to the inside of the air 14.

  • Page 76: Remote Controller

    Si04-306 Instruction I Remote Controller HOME LEAVE ON/OFF TEMP POWERFUL MODE SILENT SENSOR SWING CANCEL TIMER < > ARC433A21, A22 1. Signal transmitter: 8. SILENT button: for OUTDOOR UNIT • It sends signals to the indoor unit. SILENT operation (page 15.) 2.

  • Page 77: Preparation Before Operation

    Instruction Si04-306 Preparation before Operation I To set the batteries Position + and – correctly! 1. Press with a finger and slide the front cover to take it off. 2. Set two dry batteries (AAA). 3. Set the front cover as before. ATTENTION I I I I About batteries •...
  • Page 78 Si04-306 Instruction I To operate the remote controller • To use the remote controller, aim the transmitter at the indoor unit. If there is anything to block signals between the unit and the remote control- ler, such as a curtain, the unit will not operate. •...
  • Page 79 Instruction Si04-306 I To set the clock 1. Press “CLOCK button”. is displayed. blinks. 2. Press “TIMER setting button” to set the clock to the present time. HOME LEAVE ON/OFF Holding down “ ” or “ ” button rap- TEMP POWERFUL idly increases or decreases the time dis- play.

  • Page 80: Auto · Dry · Cool · Heat · Fan Operation

    Si04-306 Instruction 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. I To start operation 1.
  • Page 81 Instruction Si04-306 I To change the air flow rate setting 5. Press “FAN setting button”. DRY mode AUTO or HEAT or COOL or FAN mode Five levels of air flow rate setting from “ ” to “ ” plus “ ”...

  • Page 82: Adjusting The Air Flow Direction

    Si04-306 Instruction Adjusting the Air Flow Direction You can adjust the air flow direction to increase your comfort. I To adjust the horizontal blade (flap) 1. Press “SWING button”. The display will light up and the flap will begin to swing. HOME LEAVE ON/OFF 2.
  • Page 83 Instruction Si04-306 I To 3-D Airflow 1. 3. press “SWING button”: the “ ” “ ” display will light up and the flaps and louvers will move in turn. I To cancel 3-D Airflow 2. 4. press “SWING button” Notes on louvers angles I I I I ATTENTION •...

  • Page 84: Powerful Operation

    Si04-306 Instruction POWERFUL Operation POWERFUL operation quickly maximizes the cooling (heating) effect in any operation mode. You can get the maximum capacity . I To start POWERFUL operation 1. Press “POWERFUL button”. • POWERFUL operation ends in 20 minutes. Then the system automatically operates HOME LEAVE again with the settings which were used ON/OFF...

  • Page 85: Outdoor Unit Silent Operation

    Instruction Si04-306 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 conve- nient during night. I To start OUTDOOR UNIT SILENT operation 1.

  • Page 86: Home Leave Operation

    Si04-306 Instruction HOME LEAVE Operation HOME LEAVE operation is a function which allows you to record your preferred temperature and air flow rate settings. I To start HOME LEAVE operation 1. Press “HOME LEAVE button” . • The HOME LEAVE lamp lights up. 1, 2 HOME LEAVE ON/OFF...
  • Page 87 Instruction Si04-306 I 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 favor- ite set temperature and air flow rate.

  • Page 88: Intelligent Eye Operation

    Si04-306 Instruction INTELLIGENT EYE Operation “INTELLIGENT EYE” is the infrared sensor which detects the human movement. I To start INTELLIGENT EYE operation 1. Press “SENSOR button”. I To cancel the HOME LEAVE INTELLIGENT EYE ON/OFF TEMP POWERFUL operation 2. Press “SENSOR button” again. MODE [EX.] SILENT...
  • Page 89 Instruction Si04-306 “INTELLIGENT EYE” is useful for Energy Saving I I I I Energy saving operation • Change the temperature –2°C in heating / +2°C in cooling / +1°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 90: Timer Operation

    Si04-306 Instruction 2.10 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. I To use OFF TIMER opera- tion •...
  • Page 91 Instruction Si04-306 I To use ON TIMER operation • Check that the clock is correct. If not, set the clock to the present time (page 9.). 1. Press “ON TIMER button”. is displayed. blinks. 2. Press “TIMER Setting button” until the time setting reaches the point you like.

  • Page 92: Care And Cleaning

    Si04-306 Instruction 2.11 Care and Cleaning Before cleaning, be sure to stop the operation and CAUTION turn the breaker OFF. Units I Indoor unit, Outdoor unit and Remote controller 1. Wipe them with dry soft cloth. I Front grille 1. Open the front grille. •...

  • Page 93: I Air Filter

    Instruction Si04-306 Filters 1. Open the front grille. (page 24) 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 photocatalytic deodorizing function.

  • Page 94: Before A Long Idle Period

    Si04-306 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 earth wire is not disconnected or broken. Check that the drain comes smoothly out of the drain hose during COOL or DRY operation.

  • Page 95: Troubleshooting

    Instruction Si04-306 2.12 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 96: Check Again

    Si04-306 Instruction Check again. Please check again before calling a repair person. Case Check The air conditioner does not • Hasn’t a breaker turned OFF or a fuse blown? operate. • Isn’t it a power failure? (OPERATION lamp is off) •...
  • Page 97 Instruction Si04-306 Call the service shop immediately. WARNING I I I I 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.

  • Page 98: Part 6 Service Diagnosis

    Si04-306 Part 6 Part 6 Part 6 Part 6 Service Diagnosis Service Diagnosis Service Diagnosis Service Diagnosis 1. Caution for Diagnosis................90 2. Problem Symptoms and Measures ............91 3. Service Check Function ................92 4. Troubleshooting ..................93 4.1 Error Codes and Description ..............93 4.2 Indoor Unit PCB Abnormality ..............94 4.3 Freeze-up Protection Control or High Pressure Control......95 4.4 Fan Motor (DC Motor) or Related Abnormality........97...

  • Page 99: Caution For Diagnosis

    Caution for Diagnosis Si04-306 1. Caution for Diagnosis The Operation lamp flashes 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. 2.

  • Page 100: Problem Symptoms And Measures

    Si04-306 Problem Symptoms and Measures Problem Symptoms and Measures Symptom Check Item Details of Measure Reference Page None of the units operates. Check the power supply. Check to make sure that the rated voltage is — supplied. Check the type of the indoor units. Check to make sure that the indoor unit type is —...

  • Page 101: Service Check Function

    Service Check Function Si04-306 Service Check Function In the ARC433A series remote controller, the temperature display sections on the main unit indicate corresponding codes. 1. When the timer cancel button is held down for 5 seconds, a “00” indication flashes on the temperature display section.

  • Page 102: Troubleshooting

    Si04-306 Troubleshooting Troubleshooting Error Codes and Description Reference Code Indication Description Page System — Normal Insufficient gas Low-voltage detection Signal transmission error (between indoor and outdoor units) Indoor Indoor unit PCB abnormality Unit Freeze-up protection control or high pressure control Fan motor or related abnormality Heat exchanger thermistor abnormality Room temperature thermistor abnormality...

  • Page 103: Indoor Unit Pcb Abnormality

    Troubleshooting Si04-306 Indoor Unit PCB Abnormality Remote Controller 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 Faulty indoor unit PCB Causes Faulty connector connection Troubleshooting...

  • Page 104: Freeze-Up Protection Control Or High Pressure Control

    Si04-306 Troubleshooting Freeze-up Protection Control High Pressure Control Remote Controller 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 105 Troubleshooting Si04-306 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.6 Check the air passage. Refer to P.128 Is there any Provide sufficient air passage. short-circuit? Check the intake air filter. Is it very dirty? Clean the air filter.

  • Page 106: Fan Motor (Dc Motor) Or Related Abnormality

    Si04-306 Troubleshooting Fan Motor (DC Motor) or Related Abnormality Remote Controller Display Method of The rotation speed detected by the hall IC during fan motor operation is used to determine abnormal fan motor operation. Malfunction Detection Malfunction When the detected rotation speed is less than 50% of the H tap under maximum fan motor rotation demand.
  • Page 107 Troubleshooting Si04-306 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.125 and rotate fan by hand. Check No.02 Does fan rotate Replace fan motor.

  • Page 108: Thermistor Or Related Abnormality (Indoor Unit)

    Si04-306 Troubleshooting Thermistor or Related Abnormality (Indoor Unit) Remote Controller 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 operation ∗...

  • Page 109: Signal Transmission Error (Between Indoor And Outdoor Units)

    Troubleshooting Si04-306 Signal Transmission Error (between Indoor and Outdoor Units) Remote Controller Display Method of The data received from the outdoor unit in indoor unit-outdoor unit signal transmission is checked whether it is normal. Malfunction Detection Malfunction When the data sent from the outdoor unit cannot be received normally, or when the content of the data is abnormal.

  • Page 110: Ol Activation (Compressor Overload)

    Si04-306 Troubleshooting OL Activation (Compressor Overload) Remote Controller Display Method of A compressor overload is detected through compressor OL. Malfunction Detection Malfunction If the compressor OL is activated twice, the system will be shut down. The error counter will reset itself if this or any other error does not occur during the following Decision 60-minute compressor running time (total time).

  • Page 111: Compressor Lock

    Troubleshooting Si04-306 Compressor Lock Remote Controller Display Method of A compressor lock is detected by checking the compressor running condition through the Malfunction position detection circuit. Detection Malfunction The position detection circuit detects a compressor frequency of below 10 Hz for 20 seconds or a frequency of above 160 Hz.

  • Page 112: Dc Fan Lock

    Si04-306 Troubleshooting DC Fan Lock Remote Controller Display Method of A fan motor or related error is detected by checking the high-voltage fan motor rpm being Malfunction detected by the hall IC. Detection Malfunction The fan does not start in 30 seconds even when the fan motor is running. The system will be shut down if the error occurs 16 times.

  • Page 113: Input Over Current Detection

    Troubleshooting Si04-306 4.10 Input Over Current Detection Remote Controller Display Method of An input over-current is detected by checking the input current value being detected by CT with Malfunction the compressor running. Detection Malfunction The following CT input with the compressor running continues for 2.5 seconds. CT input : Above 20 A Decision The system will be shut down if the error occurs 16 times.
  • Page 114 Si04-306 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.7 ∗ An input over-current may result from wrong internal wiring. If the wires have been disconnected and reconnected for part replacement, for example, and the system is interrupted by an input over-current, Refer to P.129 take the following procedure.

  • Page 115: Four Way Valve Abnormality

    Troubleshooting Si04-306 4.11 Four Way Valve Abnormality Remote Controller Display Method of The room temperature thermistor, the indoor unit heat exchanger thermistor, the outdoor Malfunction temperature thermistor and the outdoor unit heat exchanger thermistor are checked to see if they function within their normal ranges in the operating mode. Detection Malfunction A following condition continues over 1 minute after operating 10 minutes.
  • Page 116 Si04-306 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.5 Refer to P.127 Four way valve coil Correct. disconnected (loose)? Check No.6 Refer to P.128 Harness out of connector? Reconnect.

  • Page 117: Discharge Pipe Temperature Control

    Troubleshooting Si04-306 4.12 Discharge Pipe Temperature Control Remote Controller Display Method of The discharge pipe temperature control (stop, frequency drooping, etc.) is checked with the Malfunction temperature being detected by the discharge pipe thermistor. Detection Malfunction If a stop takes place 6 times successively due to abnormal discharge pipe temperature, the system will be shut down.

  • Page 118: Position Sensor Abnormality

    Si04-306 Troubleshooting 4.13 Position Sensor Abnormality Remote Controller Display Method of A compressor startup failure is detected by checking the compressor running condition through Malfunction the position detection circuit. Detection Malfunction The compressor fails to start in about 15 seconds after the compressor run command signal is sent.

  • Page 119: Ct Or Related Abnormality

    Troubleshooting Si04-306 4.14 CT or Related Abnormality Remote Controller Display Method of A CT or related error is detected by checking the compressor running frequency and CT- Malfunction detected input current. Detection Malfunction The compressor running frequency is below 55 Hz and the CT input is below 0.1 V. (The input current is also below 1.25 A.) Decision If this error repeats 4 times, the system will be shut down.
  • Page 120 Si04-306 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.12 Turn off the power and turn it on Refer to P.132 again. Get the system started. ∗...

  • Page 121: Thermistor Or Related Abnormality (Outdoor Unit)

    Troubleshooting Si04-306 4.15 Thermistor or Related Abnormality (Outdoor Unit) P4, J3, J6, H9 Remote Controller Display Method of This type of error is detected by checking the thermistor input voltage to the microcomputer. Malfunction [A thermistor error is detected by checking the temperature.] Detection Malfunction The thermistor input is above 4.96 V or below 0.04 V with the power on.
  • Page 122 Si04-306 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.6 Turn on the power again. Refer to P.128 Error displayed again Reconnect. on remote controller? Connector or thermistor Reconnect.

  • Page 123: Electrical Box Temperature Rise

    Troubleshooting Si04-306 4.16 Electrical Box Temperature Rise Remote Controller Display Method of An electrical box temperature rise is detected by checking the radiation fin thermistor with the Malfunction compressor off. Detection Malfunction With the compressor off, the radiation fin temperature is above 80°C (above 75°C in the case of 7.1kW class).
  • Page 124 Si04-306 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.6 WARNING Turn off the power and turn it on Refer to P.128 again. To cool down the electricals, the outdoor unit fan gets started when the radiation fin temperature rises above 78˚C and stops itself when...

  • Page 125: Radiation Fin Temperature Rise

    Troubleshooting Si04-306 4.17 Radiation Fin Temperature Rise Remote Controller Display Method of A radiation fin temperature rise is detected by checking the radiation fin thermistor with the Malfunction compressor on. Detection Malfunction If the radiation fin temperature with the compressor on is above 90°C, If a radiation fin temperature rise takes place 4 times successively, the system will be shut Decision down.
  • Page 126 Si04-306 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.6 Turn off the power and turn it on Refer to P.128 again to get the system started. Check No.7 Refer to P.129 Error displayed again?

  • Page 127: Output Over Current Detection

    Troubleshooting Si04-306 4.18 Output Over Current Detection Remote Controller Display Method of An output over-current is detected by checking the current that flows in the inverter DC section. Malfunction Detection Malfunction A position signal error occurs while the compressor is running. A speed error occurs while the compressor is running.
  • Page 128 Si04-306 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. ∗ An output over-current may result from wrong internal wiring. If the wires have been disconnected and Check No.7 reconnected for part replacement, for example, and the system is interrupted by an output over-current, take the following procedure.

  • Page 129: Insufficient Gas

    Troubleshooting Si04-306 4.19 Insufficient Gas Remote Controller Display Method of Gas shortage detection I : A gas shortage is detected by checking the CT-detected input current Malfunction value and the compressor running frequency. Gas shortage detection II : A gas shortage is detected by checking the difference between Detection indoor unit heat exchanger temperature and room temperature as well as the difference between outdoor unit heat exchanger temperature and room temperature.
  • Page 130 Si04-306 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.4 Refer to P.126 Any thermistor Reconnect in position. disconnected? * Discharge pipe thermistor * Indoor / outdoor unit heat exchanger thermistor * Room temperature thermistor Check No.6 * Outdoor air thermistor...

  • Page 131: Low-Voltage Detection

    Troubleshooting Si04-306 4.20 Low-voltage Detection Remote Controller Display Method of An abnormal voltage rise or drop is detected by checking the detection circuit or DC voltage Malfunction detection circuit. Detection Malfunction An over-voltage signal is fed from the over-voltage detection circuit to the microcomputer, or the voltage being detected by the DC voltage detection circuit is judged to be below 150 V Decision for 0.1 second.

  • Page 132: High Pressure Control In Cooling

    Si04-306 Troubleshooting 4.21 High Pressure Control in Cooling Remote Controller Display Method of High-pressure control (stop, frequency drop, etc.) is activated in the cooling mode if the Malfunction temperature being sensed by the heat exchanger thermistor exceeds the limit. Detection Malfunction Activated when the temperature being sensed by the heat exchanger thermistor rises above 60°C.
  • Page 133 Troubleshooting Si04-306 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.4 Check the installation space. Refer to P.126 Check No.7 Abnormal Check No.6 Installation condition Change the air outlet grille check position.

  • Page 134: Check

    Si04-306 Check 5. Check How to Check 5.1.1 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 135: Si04

    Check Si04-306 5.1.2 Electronic Expansion Valve Check Check No.4 Conduct the followings to check the electronic expansion valve (EV). 1. Check to see if the EV connector is correctly inserted in the PCB. Compare the EV unit and the connector number. 2.

  • Page 136: Four Way Valve Performance Check

    Si04-306 Check 5.1.3 Four Way Valve Performance Check Check No.5 Turn off the power and turn it on again. ∗ Four way valve coil Cooling / dry : No continuity Start the heating-mode run. Heating : Continuity S80 voltage at DC 180-220 V with Replace the outdoor unit compressor on? PCB.

  • Page 137: Thermistor Resistance Check

    Check Si04-306 5.1.4 Thermistor Resistance Check Check No.6 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 138: Installation Condition Check

    Si04-306 Check 5.1.5 Installation Condition Check Check No.7 Installation condition check Check the allowable Abnormal Change the position of the air dimensions of the air suction discharge grille or the and discharge area. installation location. Normal Does the discharged air from other outdoor Change the position of the air unit cause an increase of discharge grille or the...

  • Page 139: Discharge Pressure Check

    Check Si04-306 5.1.6 Discharge Pressure Check Check No.8 Discharge pressure check High Replace compessor. Open the stop valve. Is the stop valve open? Is the Replace the pipe installed at connection pipe deformed? the site. At the heat exchanger and Clean.

  • Page 140: Power Supply Waveforms Check

    Si04-306 Check 5.1.8 Power Supply Waveforms Check Check No.10 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 141: Capacitor Voltage Check

    Check Si04-306 5.1.10 Capacitor Voltage Check Check No.12 Before this checking, be sure to check the main circuit for short-circuit. Checking the capacitor voltage With the circuit breaker still on, measure the voltage according to the drawing of the model in question.

  • Page 142: Main Circuit Electrolytic Capacitor Check

    Si04-306 Check 5.1.12 Main Circuit Electrolytic Capacitor Check Check No.14 Checking the main circuit electrolytic capacitor Never touch any live parts for at least 10 minutes after turning off the circuit breaker. If unavoidably necessary to touch a live part, make sure there is no DC voltage using the tester.
  • Page 143 Check Si04-306 Service Diagnosis...

  • Page 144: Part 7 Removal Procedure

    Si04-306 Part 7 Part 7 Part 7 Part 7 Removal Procedure Removal Procedure Removal Procedure Removal Procedure 1. Indoor Unit...................136 1.1 Removal of the Air Filter / Front Panel ..........136 1.2 Removal of the Front Grille ..............139 1.3 Removal of the Horizontal Blades / Vertical Blades ......141 1.4 Removal of the Electrical Box / PCB / Swing Motor ......143 1.5 Removal of the Heat Exchanger ............149 1.6 Removal of the Fan Rotor / Fan Motor..........152...

  • Page 145: Indoor Unit

    Indoor Unit Si04-306 1. Indoor Unit Removal of the Air Filter / Front Panel Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Features When the signal receiver catches a signal from the remote controller, it...
  • Page 146 Si04-306 Indoor Unit Step Procedure Points The right and left filters are interchangeable. Insert the air filters along grooves when installing. Set the air filters with displaying “FRONT” on the front side. Insert two claws of the air filter completely. 3.
  • Page 147 Indoor Unit Si04-306 Step Procedure Points 4. Remove the front panel. While opening the front panel further than it stops, release both axes and remove the front panel. Slide the front panel side to side to release each axis. Align the right and left axes with grooves in turn and insert them to the end when installing.

  • Page 148: Removal Of The Front Grille

    Si04-306 Indoor Unit Removal of the Front Grille Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the service cover. Loosen the screw and remove the service cover by the knob.
  • Page 149 Indoor Unit Si04-306 Step Procedure Points Undo the three hooks The front grille has three on the top of the front hooks on the center and the grille. both sides of the upper part. Refer to the removal procedure in a reverse way when reassembling.

  • Page 150: Removal Of The Horizontal Blades / Vertical Blades

    Si04-306 Indoor Unit Removal of the Horizontal Blades / Vertical Blades Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the horizontal blades. Open the horizontal It has no fixing screws inside blades.
  • Page 151 Indoor Unit Si04-306 Step Procedure Points 2. Remove the vertical blades. Undo the right and left pivots. Undo the three claws. Pull the vertical blades rightwards and remove Removal Procedure...

  • Page 152: Removal Of The Electrical Box / Pcb / Swing Motor

    Si04-306 Indoor Unit Removal of the Electrical Box / PCB / Swing Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the front grille. Parts layout 2.
  • Page 153 Indoor Unit Si04-306 Step Procedure Points 4. Remove the electrical box. Disconnect the four You can remove the connection wirings. electrical box without Loosen the screw and detaching the terminal strip remove the terminal board. strip board. Screw: M4×25 Disconnect the connectors for fan motor (S1).
  • Page 154 Si04-306 Indoor Unit Step Procedure Points Dislocate the electrical The electrical box has a claw box to the left and undo on its back. the back claw. Pull the electrical box Hook the back claw of the out towards you. electrical box when reassembling.
  • Page 155 Indoor Unit Si04-306 Step Procedure Points Press the receiver units Release the claws on the down and release the upper side. claws on the upper side, and then undo the claws on the lower side. Cut the clamp. The receiver units Remove the receiver units contain four PCBs.
  • Page 156 Si04-306 Indoor Unit Step Procedure Points 5. Remove the control PCB. Undo the two claws on the lower side, and then the two claws on the upper side. Remove the control PCB. Control PCB (indoor unit) S1: connector for the fan motor S21: S26: connector for the...
  • Page 157 Indoor Unit Si04-306 Step Procedure Points 7. Remove the swing motor for vertical blades. Release the swing axis Releasing the swing axis on the right side. Loosen the two screws and detach the swing motor assembly. Loosen the two screws Six claws hold the assembly.

  • Page 158: Removal Of The Heat Exchanger

    Si04-306 Indoor Unit Removal of the Heat Exchanger Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the electrical Caution box. If gas leaks, repair the spot of 1.
  • Page 159 Indoor Unit Si04-306 Step Procedure Points 2. Remove the indoor unit. Detach the indoor unit from the installation plate. 3. Remove the piping fixture. Release the claw on the upper side of the piping fixture on the back of the unit. 4.
  • Page 160 Si04-306 Indoor Unit Step Procedure Points Release the claws on the left side. Push the fixing claws on the right side and release. Pull the heat exchanger Caution to the front side and When removing or undo the claws reinstalling heat exchanger, completely, and then lift be sure to wear protective gloves or wrap the heat...

  • Page 161: Removal Of The Fan Rotor / Fan Motor

    Indoor Unit Si04-306 Removal of the Fan Rotor / Fan Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the right side panel. Loosen the two screws. You can remove the fan rotor without detaching the right side panel.
  • Page 162 Si04-306 Indoor Unit Step Procedure Points 3. Remove the fan motor. Remove the motor. Reassembling the fan motor (1) When reassembling the fan rotor, provide as much as 5mm of play between the side face of the rotor and the bottom frame.

  • Page 163: Outdoor Unit

    Outdoor Unit Si04-306 2. Outdoor Unit Removal of the Panels and Plates Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the panels and plates. Loosen the four screws and lift the panel.
  • Page 164 Si04-306 Outdoor Unit Step Procedure Points The front grille has four claws. Slide the discharge grille upwards and remove it. Loosen the six screws of the front panel. Push the front panel and undo the claw. Lift the clamp plate remove it.
  • Page 165 Outdoor Unit Si04-306 Step Procedure Points Undo the right side Lift the front panel and claw, and then the left remove it while pushing the side claws. right side panel inwards. Remove the front panel. Lift the front panel and undo the left side claws.
  • Page 166 Si04-306 Outdoor Unit Step Procedure Points 2. Remove the stop valve cover. Loosen the screw of the stop valve cover. Pull down the stop valve cover to undo the claws and remove it. The stop valve cover has six claws. (R2687) Removal Procedure...

  • Page 167: Removal Of The Fan Motor / Propeller Fan

    Outdoor Unit Si04-306 Removal of the Fan Motor / Propeller Fan Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the top panel and the front panel. Shelter 1.
  • Page 168 Si04-306 Outdoor Unit Step Procedure Points 2. Remove the fan motor. Disconnect the connector for fan motor (S70). The illustration shows arrangement of the fan motor lead wire. Removal Procedure...
  • Page 169 Outdoor Unit Si04-306 Step Procedure Points Unscrew the washer- fitted nut (M10) of the propeller fan with a spanner. Align mark of the propeller fan with D-cut section of the motor shaft when reassembling. Remove the four screws from the motor.
  • Page 170 Si04-306 Outdoor Unit Step Procedure Points Pull the fan motor out. Put the lead wire through the back of the motor when reassembling. (so as not to be entangled with the propeller fan) (R2697) Removal Procedure...

  • Page 171: Removal Of The Pcb / Electrical Box

    Outdoor Unit Si04-306 Removal of the PCB / Electrical Box Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the top panel and the front panel. 1.
  • Page 172 Si04-306 Outdoor Unit Step Procedure Points Insert the two claws of the lower part and the one claw of the upper back when Claw reassembling. (R2701) Claws (R2702) 2. Disconnect harnesses. Loosen the fixing screw Service monitor PCB of the cable way board.
  • Page 173 Outdoor Unit Si04-306 Step Procedure Points Push the claw up to release the cable way board. Open the cable way board. Disconnect the Power supply PCB harnesses from the V3(varistor) HAC1 power supply PCB. (black) ···· to the terminal strip (yellow / green) ····...
  • Page 174 Si04-306 Outdoor Unit Step Procedure Points Loosen the screw of the control PCB. Undo the two claws and release the control PCB from the ditch of the front side. Disconnect the harnesses while opening the control PCB. S10: to the terminal strip AC2: to the terminal strip...
  • Page 175 Outdoor Unit Si04-306 Step Procedure Points Disconnect the connectors. S31: to the SPM S32: to the SPM S33: to the MID S71: to the MID S91: fin thermistor Control PCB (outdoor unit) S10: to the terminal strip S20: electronic expansion valve S31: to CN14 of the...
  • Page 176 Si04-306 Outdoor Unit Step Procedure Points Disconnect the relaying wire connector for the compressor. Release the clamp by pliers. (R2715) Disconnect the reactor harness. Removal Procedure...
  • Page 177 Outdoor Unit Si04-306 Step Procedure Points Pull the clamp and draw the thermistor harness out from the back of the electrical box. Loosen the screw of the electrical box. Removal Procedure...
  • Page 178 Si04-306 Outdoor Unit Step Procedure Points Release the clamp of the four way valve harness. (R2720) Lift the electrical box and remove it. Removal Procedure...

  • Page 179: Removal Of The Reactor

    Outdoor Unit Si04-306 Removal of the Reactor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the electrical box. 1. Remove the partition plate. Release the clamp by pliers.
  • Page 180 Si04-306 Outdoor Unit Step Procedure Points Lift the partition plate and remove it. Loosen the screw. Slide the reactor remove it from the partition plate. Removal Procedure...

  • Page 181: Removal Of The Sound Blanket

    Outdoor Unit Si04-306 Removal of the Sound Blanket Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Disconnect the harness of each thermistor. Release the discharge Pay attention to the direction pipe thermistor.
  • Page 182 Si04-306 Outdoor Unit Step Procedure Points Remove the sound Since the piping ports on the blanket (side-outer). sound blanket (side-outer) are torn easily, remove the blanket carefully. Remove the sound blanket (top-upper). Remove the sound blanket (top-lower). Remove the sound Since the piping ports on the blanket (side-inner).

  • Page 183: Removal Of The Four Way Valve

    Outdoor Unit Si04-306 Removal of the Four Way Valve Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Loosen the screw of the Provide a protective sheet or four way valve coil.

  • Page 184: Removal Of The Electronic Expansion Valve

    Si04-306 Outdoor Unit Removal of the Electronic Expansion Valve Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the electronic expansion valve coil. Remove the sheets of putty.

  • Page 185: Removal Of The Compressor

    Outdoor Unit Si04-306 Removal of the Compressor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the terminal cover. Disconnect the lead Be careful so as not to burn wires of the the compressor terminals or compressor.
  • Page 186 Si04-306 Outdoor Unit Step Procedure Points Unscrew the nut of the compressor. Remove the putty of the accumulator. Before working, Warning make sure that the Ventilate when refrigerant refrigerant is empty leaks during the work. in the circuit. (If refrigerant contacts fire, it Be sure to apply will cause to arise toxic gas.) nitrogen...
  • Page 187 Outdoor Unit Si04-306 Removal Procedure...

  • Page 188: Part 8 Others

    Si04-306 Part 8 Part 8 Part 8 Part 8 Others Others Others Others 1. Others ....................180 1.1 Test Run from the Remote Controller ..........180 1.2 Jumper Settings ...................181 Others...

  • Page 189: Others

    Others Si04-306 1. Others Test Run from the Remote Controller For Heat pump In cooling mode, select the lowest programmable temperature; in heating mode, select the highest programmable temperature. Trial operation may be disabled in either mode depending on the room temperature. After trial operation is complete, set the temperature to a normal level.

  • Page 190: Jumper Settings

    Si04-306 Others Jumper Settings 1.2.1 When Two Units are Installed in One Room When two indoor units are installed in one room, the two wireless remote controllers can be set for different addresses. How to set the different addresses Control PCB of the indoor unit (1) Remove the front grille.
  • Page 191 Others Si04-306 Others...

  • Page 192: Part 9 Appendix

    Si04-306 Part 9 Part 9 Part 9 Part 9 Appendix Appendix Appendix Appendix 1. Piping Diagrams..................184 1.1 Indoor Units ..................184 1.2 Outdoor Units ..................186 2. Wiring Diagrams..................190 2.1 Indoor Units ..................190 2.2 Outdoor Units ..................193 Appendix...

  • Page 193: Piping Diagrams

    Piping Diagrams Si04-306 Piping Diagrams Indoor Units FTK(X)S 50/60 BVMA, FTK(X)S 50/60 BVMB, FT(Y)S 50/60 BVMB FTKD50BVM, FTK(X)D50BVMA, FTK(X)D50BVMT INDOOR UNIT ( 7.9CuT ) HEAT EXCHANGER THERMISTOR ON HEAT EXCH. CROSS FLOW FAN FIELD PIPING ( 6.4CuT ) FAN MOTOR FIELD PIPING ( 12.7CuT ) ( 12.7CuT )
  • Page 194 Si04-306 Piping Diagrams FTKD71BVM, FTK(X)D71BVMA, FTK(X)D71BVMT, FTKD 24/28 BVMS INDOOR UNIT ( 7.9CuT ) HEAT EXCHANGER THERMISTOR ON HEAT EXCH. CROSS FLOW FAN FIELD PIPING ( 9.5CuT ) REFRIGERANT FLOW FAN MOTOR COOLING FIELD PIPING ( 15.9CuT ) HEATING ( 12.7CuT ) 4D040083A Appendix...

  • Page 195: Outdoor Units

    Piping Diagrams Si04-306 Outdoor Units 1.2.1 Cooling Only RKS50BVMA, RKS50BVMB, RS50BVMB OUTDOOR UNIT HEAT EXCHANGER OUTDOOR AIR TEMPERATURE THERMISTOR 7.9CuT 12.7CuT 7.9CuT CAPILLARY TUBE 1 7.9CuT MUFFLER 7.9CuT WITH REFRIGERANT FLOW FILTER 6.4CuT 7.9CuT COOLING HEAT EXCHANGER THERMISTOR CAPILLARY TUBE 2 7.9CuT CAPILLARY TUBE 3 PROPELLER FAN...
  • Page 196 Si04-306 Piping Diagrams RKD50BVM, RKD50BVMA, RKD50BVMT OUTDOOR UNIT HEAT EXCHANGER OUTDOOR TEMPARATURE THERMISTOR 7.9CuT 7.9CuT 12.7CuT 7.9CuT CAPILLARY TUBE 1 7.9CuT 7.9CuT MUFFLER 7.9CuT WITH REFRIGERANT FLOW FILTER CAPILLARY TUBE 2 COOLING HEAT EXCHANGER CAPILLARY TUBE 3 THERMISTOR CAPILLARY TUBE 4 PROPELLER FAN MOTOR OPERATED VALVE...

  • Page 197: Heat Pump

    Piping Diagrams Si04-306 1.2.2 Heat Pump RXS50BVMA, RXS50BVMB, RYS50BVMB OUTDOOR UNIT HEAT EXCHANGER OUTDOOR AIR TEMPERATURE THERMISTOR 7.9CuT 12.7CuT 7.9CuT CAPILLARY TUBE 1 7.9CuT MUFFLER 7.9CuT WITH REFRIGERANT FLOW FILTER 6.4CuT 7.9CuT COOLING HEAT EXCHANGER CAPILLARY TUBE 2 THERMISTOR HEATING 7.9CuT CAPILLARY TUBE 3 PROPELLER FAN...
  • Page 198 Si04-306 Piping Diagrams RXD50BVMA, RXD50BVMT OUTDOOR UNIT HEAT EXCHANGER OUTDOOR TEMPARATURE THERMISTOR 7.9CuT 7.9CuT 15.9CuT CAPILLARY TUBE 1 7.9CuT 7.9CuT MUFFLER 7.9CuT 7.9CuT WITH REFRIGERANT FLOW FILTER CAPILLARY TUBE 2 COOLING HEAT EXCHANGER CAPILLARY TUBE 3 THERMISTOR HEATING CAPILLARY TUBE 4 PROPELLER FAN 12.7CuT FOUR WAY...

  • Page 199: Wiring Diagrams

    Wiring Diagrams Si04-306 Wiring Diagrams Indoor Units FTK(X)S50BVMA, FTK(X)S50BVMB 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...
  • Page 200 Si04-306 Wiring Diagrams FT(Y)S50BVMB 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 : FRAME GROUND : FUSE H1~H3 : HARNESS...
  • Page 201 Wiring Diagrams Si04-306 FTKD 18/24/28 BVMS Appendix...

  • Page 202: Outdoor Units

    Si04-306 Wiring Diagrams Outdoor Units RKS 50/60/71 BVMA, RKS 50/60/71 BVMB, RS 50/60 BVMB RKD 50/60/71 BVM, RKD 50/60/71 BVMA, RKD 50/60/71 BVMT PCB2 FU201 3.15A MRM20 + + + HAC1 MRM10 X11A CT1 H2 CN11 R12T CN14 3.15A TO INDOOR UNIT t˚...
  • Page 203 Wiring Diagrams Si04-306 RKD 18/24/28 BVMS Appendix...

  • Page 204: Index

    Si04-306 Index Index Index Index Numerics check No.06 ............128 check No.07 ............129 00 ................93 check No.08 ............130 3 minutes stand-by ..........51 check No.09 ............130 3-D airflow ..............36 check No.10 ............131 check No.11 ............131 check No.12 ............132 A1 ................94 check No.13 ............
  • Page 205 Si04-306 C9 ..............99 H8 ................ 110 E5 ..............101 H9 ................ 112 E6 ..............102 HA ..............28, 147 E7 ..............103 HAC1 ............. 30, 164 E8 ..............104 hall IC .............. 37, 97 EA ..............106 HE1 ............... 30, 164 F3 ..............108 HE2 ............... 30, 164 F6 ..............123 heat exchanger ...........
  • Page 206 Si04-306 mounting plate for the bearing ......153 S101 ............30, 165, 166 S102 .............. 30, 166 S20 ............30, 164, 166 names of parts ............65 S21 ..............28, 147 night set mode ............40 S26 ..............28, 147 S27 ................ 28 S28 ................
  • Page 207 Si04-306 thermistor or related abnormality (outdoor unit) ...112 thermistor resistance check .........128 Timer operation ............81 top panel ..............154 troubleshooting ..........86, 93 troubleshooting with the LED indication ....90 turning speed pulse input on the outdoor unit PCB check ..........133 U0 .................120 U2 .................122 U4 .................100 V1 ................28...
  • Page 208 Si04-306 Drawings & Flow Charts Drawings & Flow Charts Drawings & Flow Charts Drawings & Flow Charts ARC433A series ............92 heating peak-cut control ........53 automatic air flow control ........37 high pressure control in cooling ......123 automatic operation ..........39 Home Leave operation ..........
  • Page 209 Si04-306 FTKD18BVMS ..........184 FTK(X)D 50/60/71 BVMA ......190 FTKD50BVM ..........184 FTK(X)D 50/60/71 BVMT ......190 FTKD60BVM ..........184 FTK(X)S 60/71 BVMA ........190 FTKD71BVM ..........185 FTK(X)S 60/71 BVMB ........190 RKD 18/24/28 BVMS ........187 FTK(X)S50BVMA .......... 190 RKD 60/71 BVM ..........187 FTK(X)S50BVMB ..........
  • Page 210 Head office: Zandvoordestraat 300, B-8400 Oostende, Belgium Umeda Center Bldg., 4-12, Nakazaki-Nishi 2-chome, Kita-ku, Osaka, 530-8323 Japan Tokyo office: Shinjuku Sumitomo Bldg., 6-1 Nishi-Shinjuku 2-chome, Shinjuku-ku, Tokyo, 163-0235 Japan For further improvement, specifications or designs are subject to change without prior notice. Printed in Singapore 06/2003 AK COS...

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