Daikin FTK25JVE9 Service Manual
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Daikin FTK25JVE9 Service Manual

Inverter pair ftk(x)-j / rk(x)-j series
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Service
Manual
Inverter Pair
FTK(X)-J / RK(X)-J Series
[Applied Models]
! ! ! ! Inverter Pair : Cooling Only
! ! ! ! Inverter Pair : Heat Pump
Si04-115

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Summary of Contents for Daikin FTK25JVE9

  • Page 1 Si04-115 Service Manual Inverter Pair FTK(X)-J / RK(X)-J Series [Applied Models] ! ! ! ! Inverter Pair : Cooling Only ! ! ! ! Inverter Pair : Heat Pump...
  • Page 2 Inverter Pair Inverter Pair Inverter Pair FTK(X)-J / RK(X)-J Series FTK(X)-J / RK(X)-J Series FTK(X)-J / RK(X)-J Series FTK(X)-J / RK(X)-J Series !Cooling Only Indoor Unit FTK25JVE9 FTK25JVEA9 FTK25JVET9 FTK25JV1NB9 FTK35JVE9 FTK35JVEA9 FTK35JVET9 FTK35JV1NB9 Outdoor Unit RK25JVE9 RK25JVEA9 RK25JVET9 RK25JV1NB9...

  • Page 3: Table Of Contents

    Si04-115 Inverter Pair FTK(X)-J / RK(X)-J Series........... i 1. Introduction .....................v 1.1 Safety Cautions ..................v Part 1 List of Function ..............1 1. Functions....................2 1.1 Indoor Unit and Outdoor Unit ..............2 Part 2 Specification ..............3 1. Specifications ..................4 1.1 Cooling Only.....................4 1.2 Heat Pump ....................8 Part 3 Printed Circuit Board Connector Wiring Diagram ...
  • Page 4 Si04-115 2. Problem Symptoms and Measures ............63 3. Service Check Function ................64 3.1 ARC423 Series..................64 4. Code Indication on The Remote Controller...........65 4.1 Error Codes and Description of Fault .............65 5. Trouble shooting ...................66 5.1 Faulty PCB .....................66 5.2 Operation Shutdown Due to High-Pressure Control or Freeze-Up Protection (Thermistor Activation) ........67 5.3 Operation Halt Due to Fan Motor (AC Motor) or Related Abnormality.
  • Page 5 Si04-115 Part 9 Appendix................. 141 1. Piping Diagram..................142 1.1 Indoor Unit....................142 1.2 Outdoor Unit ..................143 2. Wiring Diagram ...................145 2.1 Indoor Unit....................145 2.2 Outdoor Unit ..................147 Index ..................... i Drawings & Flow Charts ............... iii Table of Contents...

  • Page 6: Introduction

    Si04-115 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 Si04-115 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

    Si04-115 Introduction Warning Be sure to use the specified cable to connect between the indoor and outdoor units. Make the connections securely and route the cable properly so that there is no force pulling the cable at the connection terminals. Improper connections can cause excessive heat generation or fire.

  • Page 9: Using Icons

    Introduction Si04-115 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. Improper installation and connections can cause excessive heat generation, fire or an electrical shock. If the installation platform or frame has corroded, replace it.

  • Page 10: Part 1 List Of Function

    Si04-115 Part 1 List of Function 1. Functions....................2 1.1 Indoor Unit and Outdoor Unit ..............2 List of Function...

  • Page 11: Functions

    Photocatalytic Filter with UV Lamp — — Horizontal Scroll, Oval Scroll — — Compressor (DAIKIN SCROLL) Mold Proof Air Filter Compressor Swing Compressor (DAIKIN ROTARY) — — Washable Grille Rotary Compressor Filter Cleaning Indicator — — Reluctance DC Motor —...

  • Page 12: Part 2 Specification

    Si04-115 Part 2 Part 2 Part 2 Part 2 Specification Specification Specification Specification 1. Specifications ..................4 1.1 Cooling Only.....................4 1.2 Heat Pump ....................8 Printed Circuit Board Connector Wiring Diagram...

  • Page 13: Specifications

    Specifications Si04-115 Specifications Cooling Only 220 - 230 - 240V, 50Hz 220 - 230V, 60Hz Indoor Units FTK25JVE9 FTK35JVE9 Model Outdoor Units RK25JVE9 RK35JVE9 2.55 (1.3~3.2) 3.5 (1.4~4.0) Capacity Btu/h 8,720 (4,400~10,900) 12,000 (4,800~13,700) Rated (Min.~Max.) kcal/h 2,200 (1,100~2,750) 3,000 (1,200~3,450)

  • Page 14: Specifications

    Si04-115 Specifications 220 - 230 - 240V, 50Hz Indoor Units FTK25JVEA9 FTK35JVEA9 Model Outdoor Units RK25JVEA9 RK35JVEA9 2.54 (1.3~3.2) 3.6 (1.4~4.0) Capacity Btu/h 8,700 (4,400~10,900) 12,300 (4,800~13,700) Rated (Min.~Max.) kcal/h 2,190 (1,100~2,750) 3,100 (1,200~3,450) Moisture Removal Running Current (Rated) Power Consumption Rated 900 (430~1,250) 1,340 (500~1,550) (Min.~Max.)
  • Page 15 Specifications Si04-115 220V, 60Hz Indoor Units FTK25JVET9 FTK35JVET9 Models Outdoor Units RK25JVET9 RK35JVET9 1.3~3.2 1.4~4.0 Capacity (Min.~Max.) kcal/h 1,100~2,750 1,200~3,450 Moisture Removal Running Current (Min.~Max.) 3.1~7.1 3.4~8.9 Power Consumption (Min.~Max.) 470~1,300 520~1,650 Power Factor (Min.~Max.) 68.9~83.2 69.5~84.3 COP (Min.~Max.) 2.77~2.46 2.69~2.42 EER (Min.~Max.) kcal/h·W...
  • Page 16 Si04-115 Specifications 230V, 50Hz Indoor Units FTK25JAV1NB FTK35JAV1NB Models Outdoor Units RK25JV1NB9 RK35JV1NB9 2.5 (1.3~3.0) 3.54 (1.4~3.8) Capacity Btu/h 8,500 (4,400~10,300) 12,100 (4,800~13,000) Rated (Min.~Max.) kcal/h 2,150 (1,100~2,600) 3,050 (1,200~3,300) Moisture Removal Running Current (Rated) Power Consumption 945 (430~1,250) 1,345 (470~1,720) Rated (Min.~Max.) Power Factor 91.3...

  • Page 17: Heat Pump

    Specifications Si04-115 Heat Pump 220-230-240V, 50Hz / 220-230V, 60Hz Indoor Units FTX25JVEA9 FTX35JVEA9 Models RX25JVEA9 RX35JVEA9 Outdoor Units Cooling Heating Cooling Heating 2.54 (1.3~3.0) 3.4 (1.3~4.0) 3.60 (1.4~3.8) 4.2 (1.4~5.1) Capacity Btu/h 8,700 (4,400~10,300) 11,600 (4,400~13,600) 12,300 (4,800~13,000) 14,300 (4,800~17,600) Rated (Min.~Max.) kcal/h 2,190 (1,100~2,600)
  • Page 18 Si04-115 Specifications 220V, 60Hz Indoor Units FTX25JVET9 FTX35JVET9 Models RX25JVET9 RX35JVET9 Outdoor Units Cooling Heating Cooling Heating 1.3~3.0 1.3~3.8 1.4~3.8 1.4~4.5 Capacity (Min.~Max.) kcal/h 1,100~2,600 1,100~3,200 1,200~3,250 1,200~4,000 Moisture Removal — — Running Current (Min.~Max.) 3.1~7.1 2.8~8.4 3.4~8.9 2.8~9.5 Power Consumption (Min.~Max.) 470~1,300 300~1,300 520~1,650...
  • Page 19 Specifications Si04-115 230V, 50Hz Indoor Units FTX25JAV1NB FTX35JAV1NB Models RX25JV1NB9 RX35JV1NB9 Outdoor Units Cooling Heating Cooling Heating 2.5 (1.3~3.0) 3.4 (1.3~4.0) 3.43 (1.4~3.8) 4.1 (1.4~5.1) Capacity Btu/h 8,500 (4,400~10,300) 11,600 (4,400~13,600) 11,700 (4,800~13,000) 14,000 (4,800~17,600) Rated (Min.~Max.) kcal/h 2,150 (1,100~2,600) 2,920 (1,100~3,440) 2,950 (1,200~3,300) 3,500 (1,200~4,400)

  • Page 20: Part 3 Printed Circuit Board Connector Wiring Diagram

    Si04-115 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 and Name ....12 1.1 FTK25/35J Series, FTX25/35J Series............12 1.2 RK25/35J Series, RX25/35J Series ............15 Printed Circuit Board Connector Wiring Diagram...

  • Page 21: Printed Circuit Board Connector Wiring Diagram And Name

    Printed Circuit Board Connector Wiring Diagram and Name Si04-115 1. Printed Circuit Board Connector Wiring Diagram and Name FTK25/35J Series, FTX25/35J Series Printed circuit board (1) (Control PCB) Printed circuit board (2) (Signal Receiver PCB) Printed circuit board (3) (Intelligent Eye Sensor PCB) Name of connector...

  • Page 22: Control Pcb

    Si04-115 Printed Circuit Board Connector Wiring Diagram and Name Control PCB (1) Signal receive P C B (2) Control P C B (1) LED1 LED2 LED3 12V check Jumper ground Intelligent eye sensor P C B (3) 5V check Jumper (R1895) Printed Circuit Board Connector Wiring Diagram...
  • Page 23 Printed Circuit Board Connector Wiring Diagram and Name Si04-115 P.C.B (1) (Control P.C.B) Detail Printed Circuit Board Connector Wiring Diagram...

  • Page 24: Rk25/35J Series, Rx25/35J Series

    Si04-115 Printed Circuit Board Connector Wiring Diagram and Name RK25/35J Series, RX25/35J Series Printed circuit board (Main-PCB) Printed circuit board (Mid-PCB) Name of connector 1) S10 Connector for Main-PCB 2) S11 Connector for Mid-PCB 3) S30 Connector for compressor motor (with internal thermostat & OL) 4) S70 Connector for fan motor 5) S80...
  • Page 25 Printed Circuit Board Connector Wiring Diagram and Name Si04-115 P.C.B Detail Printed Circuit Board Connector Wiring Diagram...

  • Page 26: Part 4 Main Function

    Si04-115 Part 4 Part 4 Part 4 Part 4 Main Function Main Function Main Function Main Function General Functionality..................18 1.1 Functions of Thermistors................18 1.2 Operating Modes..................20 1.3 Frequency Principle................21 1.4 Defrost Control ..................23 1.5 Forced Operation Mode .................24 1.6 Wide-angle Flaps, Diffuser, Louveres and Autoswing......25 1.7 Fan Speed Control for Indoor Units............26 1.8 Fan Speed Control for Outdoor Units.............27 1.9 General Functions ..................28...

  • Page 27: General Functionality

    General Functionality Si04-115 1. General Functionality Functions of Thermistors Location of The thermistors on the drawing below are used to control the system. This control secures a proper cooling and prevents problems of the unit: thermistors OUTDOOR UNIT INDOOR UNIT FIELD PIPING FIELD PIPING COOLING...
  • Page 28 Si04-115 General Functionality Frequency controlled functions The following table shows the different functions, which are controlled by decreasing or increasing the frequency: Sensor Function Why? How? Reset Malfunction Thermistor outdoor ambient To avoid condensation By setting a < > — outdoor ambient outdoor ambient outdoor...

  • Page 29: Operating Modes

    General Functionality Si04-115 Operating Modes Modes There are two operating modes: " normal operating mode " forced operating mode. Overview The following table shows the different control modes of the Split inverter room air conditioners: Mode Item Normal operating mode Auto (Heat pump only) Cooling Dry keep...

  • Page 30: Frequency Principle

    Si04-115 General Functionality 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 "...
  • Page 31 General Functionality Si04-115 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 32: Defrost Control

    Si04-115 General Functionality Defrost Control Principle Defrost control is carried out by reversing the cycle from heating to cooling. Start conditions Defrost control is set by the following conditions: " during heating " More than 6 minutes after the compressor has started up "...

  • Page 33: Forced Operation Mode

    General Functionality Si04-115 Forced Operation Mode Forced mode Item Forced cooling Forced heating " not in the 3-minute stand-by mode " not in the 3-minute stand-by mode " normal operation mode " normal operation mode " outdoor unit off " outdoor unit off Conditions "...

  • Page 34: Wide-Angle Flaps, Diffuser, Louveres And Autoswing

    Si04-115 General Functionality Wide-angle Flaps, Diffuser, Louveres and Autoswing Outline of the It can be commanded for J type by means of a user setting to select either any one desired position among the five-step directions of air flow adjusted on a remote controller, or Auto- action swing.

  • Page 35: Fan Speed Control For Indoor Units

    General Functionality Si04-115 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 ‘Hall IC check (A6)’...

  • Page 36: Fan Speed Control For Outdoor Units

    Si04-115 General Functionality Fan Speed Control for Outdoor Units Control The following drawing explains the fan speed control: For ambient temperature between ˚C. ˚C ˚C outdoor heat exchanger temperature (R1910) > D°C, the outdoor fan stays running at the Fan off delay When the compressor turns off and T [outdoor ambient] same speed for E seconds.

  • Page 37: General Functions

    General Functionality Si04-115 General Functions Pre-heat When the equipment has stopped and t < 11.5°C, the compressor is warmed-up by [outside] passing a single-phase (U, V phase) current through the compressor motor to speed up the operation start. The power consumption is 30-40W. Outside temperature 13.5˚C...
  • Page 38 Si04-115 General Functionality " The frequency command for every zone is stated below. (Please note that an operation will not carry out in the commanded frequency sometimes in case a protection control like a freeze-protection etc. will be actuated.) Command frequency Room temperature Room temp.

  • Page 39: Intelligent Eye

    General Functionality Si04-115 1.10 Intelligent Eye Outline The function that detects existence of humans in the air-conditioned room and reduces the capacity when no humans are available in the room in order to save electricity by means of a human motion sensor. Processing 1.
  • Page 40 Si04-115 General Functionality conditions to conduct thermostat-off depending on the room temperature. In or after this forty minutes, if the sensor detects human motion detection signal, it turns on “Human detection LED” and let the set temperature and the fan speed return to the original set point, keeping a normal operation.

  • Page 41: Good Sleep Cooling Control

    General Functionality Si04-115 1.11 Good Sleep Cooling Control Outline The function to create deep sleeping and to offer good sleep by altering the set temperatures in certain intervals to give temperature variation to a living space based on “1/f temperature fluctuation”...

  • Page 42: Automatic Operation

    Si04-115 General Functionality 1.12 Automatic Operation The unit automatically switches the operation mode to cooling or heating to maintain the room temperature at the main unit setting temperature. Detailed 1. Remote controller setting temperature is set as automatic cooling / heating setting temperature (18 to 30°C).

  • Page 43: Input Current Control

    General Functionality Si04-115 1.13 Input Current Control Outline The frequency control will be carried out so that the input current will not exceed the rated value in the zone which is divided by the input current detected with CT as the figure below shows. Compressor stops.

  • Page 44: Freeze Protection Function In Cooling

    Si04-115 General Functionality 1.14 Freeze Protection Function in Cooling Outline During Cooling/Dry operation, when the heat exchanger’s temperature falls down excessively, the capacity supply will be reduced (frequency step down) so as to prevent freeze of the heat exchanger and the creation of dew on a rotor caused by a excessive capacity supply to the indoor unit.

  • Page 45: Peak-Cut Control Function

    General Functionality Si04-115 1.15 Peak-Cut Control Function Outline In a heating operation, there will be anxiety that a head pressure excessively increases and exceeds the permissible limit in an over load conditions. For avoiding this fact, when the head pressure increases, frequency step down control is carried out for the protection so that the head pressure will not exceed the permissible limit after detecting the temperature of the indoor unit’s heat exchanger (saturation temperature equivalent to head pressure).

  • Page 46: Four-Way Valve Function Compensation

    Si04-115 General Functionality 1.16 Four-Way Valve Function Compensation Outline When the initial start of compressors is required after power is on or at operation mode’s alteration (Cooling/Dry ↔ Heating) that the a switch-over of a four-way valve takes place, it secures the necessary differential pressure by restricting the operation frequency in the lower limit in a certain period, and the switch-over action is ensured.

  • Page 47: Compressor Protection Function

    General Functionality Si04-115 1.17 Compressor Protection Function Outline An refrigeration oil level descent and progression of the dilution which will arise at operation of the compressors will be avoided by controlling the upper limit of frequency at the edge of compressor’s changeover from OFF to ON as follows.

  • Page 48: Wet Operation Protection

    Si04-115 General Functionality 1.18 Wet Operation Protection Outline The lower limit of output frequency is limited in two steps in accordance with outdoor conditions in order to secure the reliability of compressor (suction dryness and differential pressure). Processing 1. at the first step During operation of compressors.

  • Page 49: Dew Condensation Sweating Prevention Function

    General Functionality Si04-115 1.19 Dew Condensation Sweating Prevention Function Outline During Cooling/Dry operation, when the heat exchanger’s temperature falls down excessively, the capacity supply will be reduced (frequency step down) so as to prevent dew formation around a discharge grille caused by a excessive capacity supply to an indoor unit. Processing 1.

  • Page 50: Part 5 System Configuration

    Si04-115 Part 5 System Configuration 1. Instruction....................42 1.1 FTK25 / 35J, FTX25 / 35J ..............42 System Configuration...

  • Page 51: Instruction

    Instruction Si04-115 Instruction FTK25 / 35J, FTX25 / 35J Safety Precautions Read the following warnings and cautions carefully Failure to follow a warning is very likely before operating the system and use it correctly. WARNING to result in such grave consequences This manual classifies the precautions to the user as death or serious injury.
  • Page 52 Si04-115 Instruction Installation WARNING Do not attempt to install the air conditioner The air conditioner must be earthed. by yourself. Incomplete earthing may result in electric Consult the service shop or a qualified shocks. technician. Do not connect the earth line to a gas pipe, Incorrect work will result in water leakage, water pipe, lightening rod, or a telephone earth line .

  • Page 53: Names Of Parts

    Instruction Si04-115 Names of Parts Air purifying filter Indoor unit Front grille Air purifying filters are Air inlet attached to the inside of the air filters. Grille tab Air outlet Louvre (vertical blades) The louvre is inside of the air Indicator lamps outlet.
  • Page 54 Si04-115 Instruction Names of Parts Outdoor unit Outside air temperature sensor It senses the ambient temperature Air inlet around the unit. (Back and side) Refrigerant piping and inter-unit cable Drain hose Air outlet Earth terminal It is inside of this part. Appearance of the outdoor unit may differ with some models.

  • Page 55: Preparation Before Operation

    Instruction Si04-115 Preparation Before Operation Operating the remote controller 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 Setting the batteries the remote controller, such as a curtain, the unit will not operate.

  • Page 56: Setting The Clock

    Si04-115 Instruction Preparation Before Operation Indoor unit Setting the air purifying filters Setting the clock Open the front grille . Press Hold the grille by the tabs on the two sides and lift it until it stops with a click. (about 60˚) is displayed.
  • Page 57 Instruction Si04-115 AUTO • DRY • COOL • HEAT • FAN Operation To change the air flow rate setting: The air conditioner operates with the settings of your choice. From the next time on, the air conditioner will operate Press with the same settings.

  • Page 58: Powerful Operation

    Si04-115 Instruction POWERFUL Operation POWERFUL operation quickly maximizes the cooling (heating) effect in any operation mode. You can get the maximum capacity with a touch of a button. Pressing the (POWERFUL) button during operation starts POWERFUL operation. POWERFUL operation ends in 20 minutes. Then the system automatically operates again with the settings which were used before POWERFUL operation.

  • Page 59: Adjusting The Air Flow Direction

    Instruction Si04-115 Adjusting the Air Flow Direction You can adjust the air flow direction to increase your Adjusting the louvre comfort. Adjusting the horizontal blade (flap) Press while the air conditioner is SWING operating. Every time the button is pressed, " "...

  • Page 60: Timer Operation

    Si04-115 Instruction Timer Operation Timer functions are useful for automatically switching the ON TIMER operation air conditioner on or off at night or in the morning. You can Check that the clock is correct. If not, set the clock to the present also use OFF TIMER and ON TIMER in combination.
  • Page 61 Instruction Si04-115 Good Sleep Cooling Operation (G-SLEEP) •The "Good Sleep Cooling Operation" makes the 1/f Fluctuating Temperature. It brings you comfortable sleep as it prevents from getting chilied. -SLEEP Press in cooling operation. To change the temperature setting. (See page 48.) To change the air flow rate setting.
  • Page 62 Si04-115 Instruction Intelligent Eye Adjusting the angle of the “Intelligent Eye” is the infrared sensor which detecs the human movement. Intelligent-eye sensor SENSOR • You can adjust the angle of the Intelligent-eye Press While the air conditioner sensor to remove the detection area. (Adjustable angle: 15˚...

  • Page 63: Care And Cleaning

    Instruction Si04-115 Care and Cleaning Cleaning the indoor and outdoor CAUTION units and the remote controller Before cleaning, be sure to stop the operation and turn the breaker OFF. Wipe them with dry soft cloth. For cleaning, do not use water hotter than 40˚C, benzine, gasoline, thinner, nor other volatile oils, polishing compound, Cleaning the air filters scrubbing brushes nor other hard stuff.

  • Page 64: Before A Long Idle Period

    Si04-115 Instruction Care and Cleaning Check Cleaning the front grille You may remove the front grille for cleaning. Check that the base, stand and other fittings of the outdoor unit are not decayed CAUTION or corroded. When removing or attaching the front grille, use a robust and stable stool and watch your steps carefully.

  • Page 65: Trouble Shooting

    Instruction Si04-115 Trouble Shooting 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. When ON/OFF button was You should wait for about 3 minutes.
  • Page 66 Si04-115 Instruction Trouble Shooting 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) Are batteries set in the remote controller? Is the address switch in the remote controller set correctly?
  • Page 67 Instruction Si04-115 Trouble Shooting 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.

  • Page 68: Fault Diagnosis

    Si04-115 Instruction Trouble Shooting Fault diagnosis FAULT DIAGNOSIS BY REMOTE CONTROLLER IN THE EVENT OF AN ABNORMALITY, THE RELEVANT ABNORMALITY CODE APPEARS FLASHING IN THE REMOTE CONTROLLER'S TEMPERATURE DISPLAY. CODE MEANING CODE MEANING NORMAL INTERNAL THERMOSTAT WORKED OR REFRIGEMENT SHORTAGE HIGH DISCHARGE PIPE TEMPERATURE POWER FACTOR MODULE ABNORMALITY FAULTY COMPRESSOR START...
  • Page 69 Instruction Si04-115 System Configuration...

  • Page 70: Part 6 Service Diagnosis

    Si04-115 Part 6 Part 6 Part 6 Part 6 Service Diagnosis Service Diagnosis Service Diagnosis Service Diagnosis 1. Caution for Diagnosis................62 1.1 Troubleshooting with The Operation Lamp ..........62 2. Problem Symptoms and Measures ............63 3. Service Check Function ................64 3.1 ARC423 Series..................64 4.

  • Page 71: Caution For Diagnosis

    Caution for Diagnosis Si04-115 1. Caution for Diagnosis Troubleshooting with The Operation Lamp 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.

  • Page 72: Problem Symptoms And Measures

    Si04-115 Problem Symptoms and Measures 2. Problem Symptoms and Measures Problem Symptom Check Item Details of Measure Page No. to referred None of The Units Check the power supply. Check to make sure that the rated voltage is — Operates. supplied.

  • Page 73: Service Check Function

    Service Check Function Si04-115 Service Check Function ARC423 Series In the ARC423A series, 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 74: Code Indication On The Remote Controller

    Si04-115 Code Indication on The Remote Controller 4. Code Indication on The Remote Controller Error Codes and Description of Fault Code Description of Problem Indication System Normal Signal transmission error (between indoor and outdoor units) Indoor Unit Faulty indoor unit PCB Operation halt due to the freeze protection function or high pressure control Fan motor or related abnormality...

  • Page 75: Trouble Shooting

    Trouble shooting Si04-115 5. Trouble shooting Faulty PCB A1 A1 A1 A1 Remote Controller Display Indoor unit LED 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. "...

  • Page 76: Operation Shutdown Due To High-Pressure Control Or Freeze-Up Protection (Thermistor Activation)

    Si04-115 Trouble shooting Operation Shutdown Due to High-Pressure Control or Freeze-Up Protection (Thermistor Activation) A5 A5 A5 A5 Remote Controller Display Indoor unit LED Display " Method of High pressure control During heating operations, the temperature detected by the indoor heat exchanger Malfunction thermistor is used for the high pressure control (stop, outdoor fan stop, etc.) Detection...

  • Page 77: Operation Halt Due To Fan Motor (Ac Motor) Or Related Abnormality

    Trouble shooting Si04-115 Operation Halt Due to Fan Motor (AC Motor) or Related Abnormality A6 A6 A6 A6 Remote Controller Display Indoor unit LED Display Method of The rotation speed detected by the hall IC during fan motor operation is used to determine abnormal fan motor operation.

  • Page 78: Operation Halt Due To Detection Of Thermistor Or Related Abnormality

    Si04-115 Trouble shooting Operation Halt Due to Detection of Thermistor or Related Abnormality C4, C9, C9, CA CA CA CA Remote Controller Display Indoor unit LED Display Method of The temperatures detected by the thermistors are used to determine thermistor errors. Malfunction Detection Malfunction...

  • Page 79: Faulty Indoor Unit Pcb

    Trouble shooting Si04-115 Faulty Indoor Unit PCB ∗ Remote Controller Display Indoor unit LED Display Method of The proper program operation of the microcomputer is checked by the program. Malfunction Detection Malfunction When the microcomputer program does not function properly. Decision Conditions "...

  • Page 80: Faulty Indoor Unit Pcb

    Si04-115 Trouble shooting Faulty Indoor Unit PCB ∗ Remote Controller Display Indoor unit LED Display Method of The condition of the transmission circuit for indoor-outdoor signal transmission is detected. Malfunction Detection Malfunction When the transmission circuit remains ON. Decision Conditions "...

  • Page 81: Power Supply Abnormalities Or Faulty Indoor Printed Circuit Boards

    Trouble shooting Si04-115 Power Supply Abnormalities or Faulty Indoor Printed Circuit Boards ∗ U4 U4 U4 U4 Remote Controller Display Indoor unit LED Display Method of 1. The proper program operation of the microcomputer is checked by the program. 2. In indoor-outdoor signal communications, the indoor unit determines whether the outdoor Malfunction unit receives signals properly by detecting signals transmitted by the outdoor unit to the Detection...

  • Page 82: Signal Transmission Error (Between Indoor And Outdoor Units)

    Si04-115 Trouble shooting Signal Transmission Error (Between Indoor and Outdoor Units) U4 U4 U4 U4 Remote Controller Display Indoor unit LED 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...

  • Page 83: Operation Halt Due To Detection Of Ct Error

    Trouble shooting Si04-115 Operation Halt Due to Detection of CT Error H8 H8 H8 H8 Remote Controller Display Outdoor unit LED Display Method of CT errors are detected using the compressor's operating frequency and the input current detected by the CT. Malfunction Detection Malfunction...

  • Page 84: Operation Halt Due To Thermistor Error Or Disconnection Detection

    Si04-115 Trouble shooting 5.10 Operation Halt Due to Thermistor Error or Disconnection Detection J3, J6, J6, H9 H9 H9 H9 Remote Controller Display Outdoor unit LED Display Method of Thermistor errors are detected using thermistor input voltage to micro computer. (Thermistor errors are detected using the temperatures detected by the thermistors.) Malfunction Detection...

  • Page 85: Operation Halt Due To Compressor Startup Error

    Trouble shooting Si04-115 5.11 Operation Halt Due to Compressor Startup Error E6 E6 E6 E6 Remote Controller Display Outdoor unit LED Display Method of Compressor startup errors are detected using input current detected by CT and compressor’s operation frequency. Malfunction Detection Malfunction When the inlet current is over the setting value.

  • Page 86: Output Overcurrent

    Si04-115 Trouble shooting 5.12 Output Overcurrent L5 L5 L5 L5 Remote Controller Display Outdoor unit LED Display Method of Detection of output overcurrent based on current flowing in Power transistor. (Inverter direct current part) Malfunction Detection Malfunction When output overcurrent enters microcomputer from output overcurrent detection circuit. Decision When error occurs 6 times, system shuts down.

  • Page 87: Troubleshooting

    Trouble shooting Si04-115 ∗ Troubleshooting Erroneous internal wiring can result in output overcurrent in some cases. If system stops due to output overcurrent after parts replacement that requires disconnection of wires, check wiring carefully Be sure to turn off power switch before connect or disconnect connector, Check No.3 Caution or parts damage may be occurred.

  • Page 88: Faulty Outdoor Unit Pcb

    Si04-115 Trouble shooting 5.13 Faulty Outdoor Unit PCB ∗ Remote Controller Display Outdoor unit LED Display Method of The proper program operation of the microcomputer is checked by the program. Malfunction Detection Malfunction When the microcomputer program does not function properly. Decision Conditions "...

  • Page 89: Faulty Outdoor Unit Pcb And Transmitting/Receiving Circuit

    Trouble shooting Si04-115 5.14 Faulty Outdoor Unit PCB and Transmitting/Receiving Circuit ∗ Remote Controller Display Outdoor unit LED 3 3 3 3 Display Method of 1. The proper program operation of the microcomputer is checked by the program. 2. Signals transmitted from the outdoor unit to the indoor unit are received by the outdoor unit Malfunction itself in indoor unit -outdoor unit signal transmission mode, and proper receiving of the Detection...

  • Page 90: Operation Halt Due To Detection Of Input Over Current

    Si04-115 Trouble shooting 5.15 Operation Halt Due to Detection of Input Over Current E8 E8 E8 E8 Remote Controller Display Outdoor unit LED 5 5 5 5 Display Method of Input over current is checked using the input current detected by the CT during compressor operation.
  • Page 91 Trouble shooting Si04-115 ∗ Troubleshooting Internal wiring errors can cause an input over current. If the equipment stops due to an input over current after the wires are disconnected and connected again for parts replacement, etc., check for wiring errors. Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred.

  • Page 92: Interrupt Due To Ol Action

    Si04-115 Trouble shooting 5.16 Interrupt due to OL Action Remote Controller Display Outdoor unit LED Display " Method of OL action detected by the opening of OL contact. Malfunction Detection Malfunction If an OL action signal has come to the microcomputer. "...
  • Page 93 Trouble shooting Si04-115 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.17 Check continuity between contacts using a tester. Refer to P.92 Is there continuity (with system Replace the OL.

  • Page 94: Check

    Si04-115 Check 6. Check How to Check 6.1.1 Power transistor check Capacitor voltage check Check No.3 1. Power transistor check Note: Check to make sure that the voltage between the terminal of Power transistor (+) and (-) is approx. 0 volt before checking power transistor. <...
  • Page 95 Check Si04-115 < Measuring positions > Take measurements at the power transistor (+) and (-) terminals in the same way as described in section 1. Set the multi-tester to DC and VOLTAGE RANGE before measurement. ∗ Since capacitor (+) and (-) are connected to power transistor (+) and (-), capacitor voltage can be measured at the power transistor (+) and (-) terminals.
  • Page 96 Si04-115 Check 6.1.2 Power Transistor Output Check Check No.4 Measure the output current and voltage of the power transistor. Output Current Remove the front panel, and measure the current in the red, yellow and blue wire harness inside the compressor using a clamp meter. Measurement 1.

  • Page 97: Thermistor Resistance Check

    Check Si04-115 6.1.3 Thermistor Resistance Check Check No.5 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 98: Installation Condition Check

    Si04-115 Check For the models whose thermistor is directly equipped on the printed circuit board; " Remove the signal receiver and the display printed circuit board (disconnect the connector too), and then measure ohm by an ohmmeter at the both ends. "...

  • Page 99: Discharge Pressure Check

    Check Si04-115 6.1.5 Rectifier Check Check No.11 There are several different terminal position patterns. Therefore, be sure to check the terminal marks. Negative ( ) terminal of tester (positive terminal ( for digital tester) Positive ( ) terminal of tester (negative terminal ( ) for digital tester) Several KΩ...

  • Page 100: Power Supply Waveforms Check

    Si04-115 Check 6.1.7 Power Supply Waveforms Check Check No.13 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). "...

  • Page 101: Hall Ic Check

    Check Si04-115 6.1.9 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 102: Part 7 Removal Procedure

    Si04-115 Part 7 Part 7 Part 7 Part 7 Removal Procedure Removal Procedure Removal Procedure Removal Procedure 1. For FTK25J, FTK35J, FTX25J, FTX35J ..........94 1.1 Removal of Air Filter................94 1.2 Removal of Front Grille ................97 1.3 Removal of Horizontal Blade and Vertical Blade........100 1.4 Removal of Switch Box, PC Board and Swing Motor......102 1.5 Removal of Heat Exchanger ..............108 1.6 Install of Drain Plug ................111...

  • Page 103: For Ftk25J, Ftk35J, Ftx25J, Ftx35J

    For FTK25J, FTK35J, FTX25J, FTX35J Si04-115 1. For FTK25J, FTK35J, FTX25J, FTX35J Removal of Air Filter Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work.. Step Procedure Points 1. External features (Illustrations show D series.) "...
  • Page 104 Si04-115 For FTK25J, FTK35J, FTX25J, FTX35J Step Procedure Points 3. Opening and shutting front panel Hook a finger onto the Support the front panel by one projection part provided hand, while remove the rotation on the both sides of the axis at the upper center by the unit’s panel and open other hand.
  • Page 105 For FTK25J, FTK35J, FTX25J, FTX35J Si04-115 Step Procedure Points When restoring the air filter, make sure that the projection parts on the panel are in the guide groove, and then shut the panel. Removal Procedure...

  • Page 106: Removal Of Front Grille

    Si04-115 For FTK25J, FTK35J, FTX25J, FTX35J Removal of 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. Opening and closing of service cover Remove a service cover mounting screw.
  • Page 107 For FTK25J, FTK35J, FTX25J, FTX35J Si04-115 Step Procedure Points 2. Removal of front grille assembly. " Remove the two Screw stoppers inside the screws, in the right and flap which were equipped in the left, which fix the the existing models are not main body with the front provided.
  • Page 108 Si04-115 For FTK25J, FTK35J, FTX25J, FTX35J Step Procedure Points " The front grille can be When restoring the grille, removed in a manner to Make sure whether each pull out the upper part hook is set as it was. forward and lift up the lower part.

  • Page 109: Removal Of Horizontal Blade And Vertical Blade

    For FTK25J, FTK35J, FTX25J, FTX35J Si04-115 Removal of Horizontal Blade and Vertical Blade Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove horizontal blade. " Lift horizontal blade to Screw stoppers inside the open position.
  • Page 110 Si04-115 For FTK25J, FTK35J, FTX25J, FTX35J Step Procedure Points " For restoring. 1. Since the key pattern hook is provided on the left side, insert the edge of the blade to the tip while rotating it. 2. Restore the two fixed parts of the horizontal blade onto the hook.

  • Page 111: Removal Of Switch Box, Pc Board And Swing Motor

    For FTK25J, FTK35J, FTX25J, FTX35J Si04-115 Removal of Switch Box, PC Board and Swing Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points " Remove front grill. 1.
  • Page 112 Si04-115 For FTK25J, FTK35J, FTX25J, FTX35J Step Procedure Points " Remove a screw on the The switch box can be terminal strip. removed instead of disengaging the terminal strip. Remove a screw on the switch box. Removal Procedure...
  • Page 113 For FTK25J, FTK35J, FTX25J, FTX35J Si04-115 Step Procedure Points " Pull up the switch box A hook is provided on the forward to remove. behind. Removal Procedure...
  • Page 114 Si04-115 For FTK25J, FTK35J, FTX25J, FTX35J Step Procedure Points 2. Removal of printed circuit board Remove the shelter. Disengage the front plate of the switch box. Disengage the knobs by pushing the two hooks at the top and the bottom. Sliding to the left, the front part of the switch box can be removed.
  • Page 115 For FTK25J, FTK35J, FTX25J, FTX35J Si04-115 Step Procedure Points Disengage the four knobs on the back of the display printed circuit board. Display printed circuit board. Removal Procedure...
  • Page 116 Si04-115 For FTK25J, FTK35J, FTX25J, FTX35J Step Procedure Points " Control printed circuit The control printed circuit board. board is integrated with the power supply printed circuit board. 3. Remove swing motor assembly. To remove swing motor assembly, remove two screws.

  • Page 117: Removal Of Heat Exchanger

    For FTK25J, FTK35J, FTX25J, FTX35J Si04-115 Removal of Heat Exchanger Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points " Conduct pump-down Warning! operation. " If gas leaks, repair the leak Remove the installation location, then connect all frame from the mounting...
  • Page 118 Si04-115 For FTK25J, FTK35J, FTX25J, FTX35J Step Procedure Points Disengage the hooks of the pipe retainer on the back. " Pull auxiliary pipe Be careful to prevent pipe forward to an angle of deformation. 10 to 20 degrees. Disengage hooks located right and left side, and pull heat exchanger forward.
  • Page 119 For FTK25J, FTK35J, FTX25J, FTX35J Si04-115 Step Procedure Points Lift and remove heat exchanger. Caution! When removing or re- installing heat exchanger, be sure to wear protective gloves or wrap heat exchanger with cloths. (Fins can cut fingers.) Removal Procedure...

  • Page 120: Install Of Drain Plug

    Si04-115 For FTK25J, FTK35J, FTX25J, FTX35J Install of Drain Plug Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points " Disconnect drain hose. The drain pan is integrated with the bottom plate.

  • Page 121: Removal Of Fan Rotor And Motor

    For FTK25J, FTK35J, FTX25J, FTX35J Si04-115 Removal of Fan Rotor and Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points " Remove heat exchanger. To remove right side panel, remove three screws.
  • Page 122 Si04-115 For FTK25J, FTK35J, FTX25J, FTX35J Step Procedure Points Disengage hook. Loosen the hexagon head set screw on the fan rotor. Removal Procedure...
  • Page 123 For FTK25J, FTK35J, FTX25J, FTX35J Si04-115 Step Procedure Points Remove the motor and fan rotor. Remove a screw on the left side panel. Removal Procedure...

  • Page 124: Si04

    Si04-115 For FTK25J, FTK35J, FTX25J, FTX35J Step Procedure Points Disengage a hook from the backward. Since the fan bearing is made of rubber, push it strongly off from the inside. The bearing can be removed just as the left-side plate is attached with.

  • Page 125: For Rk25J, Rk35J, Rx25J, Rx35J

    For RK25J, RK35J, RX25J, RX35J Si04-115 2. For RK25J, RK35J, RX25J, RX35J Removal of External Casing Procedure Warning Be sure to turn off all power supplies at least 10 min. before disassembling work. Step Procedure Points The stop valve cover can be removed when the fixed screw is removed.
  • Page 126 Si04-115 For RK25J, RK35J, RX25J, RX35J Step Procedure Points The top plate and the front plate are constructed in a monoblock. Remove the three screws on the right side and the two screws on the front plate. Remove the three screws on the left side.
  • Page 127 For RK25J, RK35J, RX25J, RX35J Si04-115 Step Procedure Points " The front plate and the Sectional view at the front. left side plate can be Top plate removed when the one fixed screw is removed. The edge of the top plate gets into this groove.

  • Page 128: Removal Of Bell Mouth And Left Side Plate

    Si04-115 For RK25J, RK35J, RX25J, RX35J Removal of Bell mouth and Left Side Plate Procedure Warning Be sure to turn off all power supplies at least 10 min. before disassembling work. Step Procedure Points " The bell mouth is Remove the bell mouth from attached to the front the front plate after removing plate with two screws...

  • Page 129: Removal Of Pc Board And Switch Box

    For RK25J, RK35J, RX25J, RX35J Si04-115 Removal of PC Board and Switch Box Procedure Warning Be sure to turn off all power supplies at least 10 min. before disassembling work. Step Procedure Points " 1. Remove the shelter. The shelter has five hooks. "...
  • Page 130 Si04-115 For RK25J, RK35J, RX25J, RX35J Step Procedure Points Remove the four screws fixing the printed circuit board. Disconnect the wire harness. Disconnect the two connectors of the reactor. Removal Procedure...
  • Page 131 For RK25J, RK35J, RX25J, RX35J Si04-115 Step Procedure Points " Undo the eight hooks The printed circuit board has and the printed circuit eight hooks. board can be disengaged. Disconnect the three wires from the printed circuit board. Removal Procedure...
  • Page 132 Si04-115 For RK25J, RK35J, RX25J, RX35J Step Procedure Points The printed circuit board can completely be released. 3. Remove the switch box. Remove the two screws fixing the switch box. Removal Procedure...
  • Page 133 For RK25J, RK35J, RX25J, RX35J Si04-115 Step Procedure Points Lift and remove the switch box. 4. Remove the molded interconnect device (MID). Remove the one screw fixing the MID. Removal Procedure...
  • Page 134 Si04-115 For RK25J, RK35J, RX25J, RX35J Step Procedure Points Slide the MID upward and release. Removal Procedure...

  • Page 135: Removal Of Propeller Fan And Fan Motor

    For RK25J, RK35J, RX25J, RX35J Si04-115 Removal of Propeller Fan and Fan Motor Procedure Warning Be sure to turn off all power supplies at least 10 min. before disassembling work. Step Procedure Points " " Disconnect the fan motor Remove the external plates connector S70.
  • Page 136 Si04-115 For RK25J, RK35J, RX25J, RX35J Step Procedure Points Remove the fan motor. Removal Procedure...

  • Page 137: Removal Of Compressor Noise Absorption Pad

    For RK25J, RK35J, RX25J, RX35J Si04-115 Removal of Compressor Noise Absorption Pad Procedure Warning Be sure to turn off all power supplies at least 10 min. before disassembling work. Step Procedure Points 1. To remove the right side plate. Remove the three screws for removing the right side plate.
  • Page 138 Si04-115 For RK25J, RK35J, RX25J, RX35J Step Procedure Points Pull out the body of the noise absorption pad. " Pull out the top pad of Since the slit prepared for the noise absorption the piping on the noise (a). absorption pad is torn easily, remove the pad carefully.

  • Page 139: Removal Of Partition Plate And Reactor

    For RK25J, RK35J, RX25J, RX35J Si04-115 Removal of Partition Plate and Reactor Procedure Warning Be sure to turn off all power supplies at least 10 min. before disassembling work. Step Procedure Points 1. To remove the partition plate. Disengage the lead wires from the wire clip.
  • Page 140 Si04-115 For RK25J, RK35J, RX25J, RX35J Step Procedure Points When restoring the partition plate, put the hook into the bottom frame. 2. To remove the reactor The reactor can be removed by removing the fixed screw. Removal Procedure...

  • Page 141: Removal Of Four-Way Valve

    For RK25J, RK35J, RX25J, RX35J Si04-115 Removal of Four-way Valve Procedure Warning Be sure to turn off all power supplies at least 10 min. before disassembling work. Step Procedure Points 1. To remove the parts around the four-way valve. Remove the terminal cover, the lead wires of the compressor and the partition plate so as not...
  • Page 142 Si04-115 For RK25J, RK35J, RX25J, RX35J Step Procedure Points " Begin your work after recognizing complete Caution empty of refrigerant in the Be careful about four-way refrigerant circuit. valve, pipes and so on, which were heated up by a gas Provide a protective brazing machine, so as not to sheet or a steel plate so...

  • Page 143: Removal Of Compressor

    For RK25J, RK35J, RX25J, RX35J Si04-115 Removal of Compressor Procedure Warning Be sure to turn off all power supplies at least 10 min. before disassembling work. Step Procedure Points " 1. To Remove the Parts Be careful so as not to burn Around the Compressor.
  • Page 144 Si04-115 For RK25J, RK35J, RX25J, RX35J Step Procedure Points The compressor’s mounting nut to be removed is one piece. Remove the nut by means of an open-end wrench. Warning Since it may happen that refrigeration oil in the compressor will catch fire, "...
  • Page 145 For RK25J, RK35J, RX25J, RX35J Si04-115 Removal Procedure...
  • Page 146 Si04-115 Part 8 Others 1. Others ....................138 1.1 Explanation...................138 Others...

  • Page 147: Part 8 Others

    Others Si04-115 1. Others Explanation 1.1.1 Test Run from the Remote Controller (For Heat Pump Model Only) Trial Operation and Testing 1. Measure the supply voltage and make sure that it falls in the specified range. 2. Trial operation should be carried out in either cooling or heating mode. For Heat pump In cooling mode, select the lowest programmable temperature;...
  • Page 148 Si04-115 Others 1.1.2 Method of Operating Air Conditioners Individually (When Two Units are Installed in One Room) For Cooling Only and Heat Pump Model " How to set the different addresses. " When two indoor units are installed in one room, the two wireless remote controllers can be set for different addresses.
  • Page 149 Others Si04-115 1.1.5 Adjusting the Angle of the Intelligent-eye Sensor " Once installation of the indoor unit is complete, adjust the angle of the Intelligent-eye sensor to ensure the detection area properly covers the room. (Adjustable angle : 15° to right and left of center) "...

  • Page 150: Part 9 Appendix

    Si04-115 Part 9 Part 9 Part 9 Part 9 Appendix Appendix Appendix Appendix 1. Piping Diagram..................142 1.1 Indoor Unit....................142 1.2 Outdoor Unit ..................143 2. Wiring Diagram ...................145 2.1 Indoor Unit....................145 2.2 Outdoor Unit ..................147 Appendix...

  • Page 151: Piping Diagram

    Piping Diagram Si04-115 1. Piping Diagram Indoor Unit 1.1.1 Cooling Only and Heat Pump INDOOR UNIT HEAT EXCHANGER 7.0CuT 7.0CuT THERMISTOR 7.0CuT ON HEAT EXCH. 7.0CuT CROSS FLOW FAN FIELD PIPING ( 6.4CuT ) FAN MOTOR FTK25- FIELD PIPING FTX25- 9.5CuT CuT ) FTK35-...

  • Page 152: Outdoor Unit

    Si04-115 Piping Diagram Outdoor Unit 1.2.1 Cooling Only RK25JVE9, RK25JVEA9, RK25JVET9, RK25JV1NB9 OUTDOOR UNIT OUTDOOR TEMPARATURE THERMISTOR HEAT EXCHANGER 7.9CuT 7.9CuT HEAT EXCHANGER THERMISTOR CAPILLARY TUBE 7.9CuT FIELD PIPING 6.4CuT 7.9CuT ( 6.4CuT ) 7.9CuT LIQUID STOP VALVE PROPELLER FAN FIELD PIPING 9.5CuT 9.5CuT...
  • Page 153 Piping Diagram Si04-115 1.2.2 Heat Pump RX25JVEA9, RX25JVET9, RX25JV1NB9 OUTDOOR UNIT HEAT EXCHANGER OUTDOOR TEMPARATURE 7.9CuT THERMISTOR 7.9CuT HEAT EXCHANGER THERMISTOR CAPILLARY TUBE 1 7.9CuT 6.4CuT 7.9CuT CAPILLARY TUBE 2 PROPELLER FAN 9.5CuT REVERSING FOUR WAY FIELD PIPING SOLENOID VALVE ( 6.4CuT ) VALVE LIQUID...

  • Page 154: Wiring Diagram

    Si04-115 Wiring Diagram 2. Wiring Diagram Indoor Unit 2.1.1 Cooling Only FTK25JVE9, FTK25JVEA9, FTK25JVET9, FTK25JV1NB9 FTK35JVE9, FTK35JVEA9, FTK35JVET9, FTK35JV1NB9 PCB3 PCB1 INTELLIGENT- → EYE SENSOR 3.15A TERMINAL FOR outdoor CENTRALIZED CONTROL PCB2 FIELD WIRING. GRN/YLW LED1 LED2 LED3 CAUTION NOTE THAT OPERATION WILL...
  • Page 155 Wiring Diagram Si04-115 2.1.2 Heat Pump FTX25JVEA9, FTX25JVET9, FTX25JV1NB9 FTX35JVEA9, FTX35JVET9, FTX35JV1NB9 PCB3 PCB1 INTELLIGENT- → 3.15A EYE SENSOR TERMINAL FOR outdoor CENTRALIZED CONTROL PCB2 GRN/YLW LED3 LED1 LED2 FIELD WIRING. CAUTION NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF SIGNAL THE MAIN POWER SUPPLY IS tº...

  • Page 156: Outdoor Unit

    Si04-115 Wiring Diagram Outdoor Unit 2.2.1 Cooling Only RK25JVE9, RK25JVEA9, RK25JVET9 RK35JVE9, RK35JVEA9, RK35JVET9 indoor MRM20 TRM1 /YLW MRM10 3.15A 102˚C FIELD WIRING. NOTE 1. REFER TO THE NAMEPLATE FOR THE POWER REQUIREMENTS. outdoor t˚ t˚ C9 , C37 , C38 , C39 , C40 : CAPACITOR : CURRENT TRANSFORMER...
  • Page 157 Wiring Diagram Si04-115 2.2.2 Heat Pump RX25JVEA9, RX25JVET9 RX35JVEA9, RX35JVET9 indoor MRM20 TRM1 /YLW MRM10 3.15A MRCW 102˚C FIELD WIRING. NOTE 1.REFER TO THE NAMEPLATE FOR outdoor t˚ t˚ THE POWER REQUIREMENTS. C9 , C37 , C38 , ( OUTDOOR ) ( CONDENSER ) C39 , C40 CAPACITOR...

  • Page 158: Index

    Si04-115 Index Index Index Index How to set the different addresses ...... 139 A1 ................66 A5 ................67 Input Current Control ..........34 A6 ................68 Install of Drain Plug ..........111 ADDRESS SETTING JUMPER ......12 Installation Condition Check ........89 ARC423 Series ............64 Instruction ..............
  • Page 159 Si04-115 Power Supply Waveforms Check ......91 Power transistor check ...........85 Power Transistor Output Check ......87 Pre-heat operation ..........28 Rectifier Check ............90 Refrigerant System Check ........92 Removal of Air Filter ..........94 Removal of Bell mouth and Left Side Plate ..119 Removal of Compressor ........134 Removal of Compressor Noise Absorption Pad ..........128 Removal of External Casing .........116...
  • Page 160 Si04-115 Drawings & Flow Charts Drawings & Flow Charts Drawings & Flow Charts Drawings & Flow Charts Operation Halt Due to Compressor Startup Error ..........76 Adjusting the Angle of the Intelligent-eye Operation Halt Due to Detection of CT Error ..74 Sensor ............140 Operation Halt Due to Detection of Input ARC423 Series ............64...
  • Page 161 (Between Indoor and Outdoor Units) ....73 Thermistor Resistance Check ........88 Trial operation from Remote Controller ....138 Wet Operation Protection ........39 Wide-angle Flaps, Diffuser, Louveres and Autoswing ..........25 Wiring Diagram FTK25JVE9,FTK25JVEA9,FTK25JVET9, FTK25JV1NB9 ........145 FTK35JVE9,FTK35JVEA9,FTK35JVET9, FTK35JV1NB9 ........145 FTX25JVEA9, FTX25JVET9, FTX25JV1NB9 ........146 FTX35JVEA9, FTX35JVET9, FTX35JV1NB9 ........146...
  • Page 162 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 Japan 02/2002 AK...

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