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Daikin F-Series Service Manual
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Daikin F-Series Service Manual

Wall mounted type
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See also: Service Manual , Technical Manual
Inverter Pair
Wall Mounted Type D-Series
F-Series
[Applied Models]
Inverter Pair : Cooling Only
Inverter Pair : Heat Pump
Non-Inverter Pair : Cooling Only
Non-Inverter Pair : Heat Pump
SiBE04 - 705

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Summary of Contents for Daikin F-Series

  • Page 1 SiBE04 - 705 Inverter Pair Wall Mounted Type D-Series F-Series [Applied Models] Inverter Pair : Cooling Only Inverter Pair : Heat Pump Non-Inverter Pair : Cooling Only Non-Inverter Pair : Heat Pump...
  • Page 2 SiBE04-705 Inverter Pair D-Series F-Series Cooling Only Indoor Units FTKS50D2V1W(L) FTN50FV1B FTKS50FV1B FTN60FV1B FTKS60FV1B FTKS71FV1B Outdoor Units RKS50F2V1B RN50E3V1B RKS60F2V1B RN60E3V1B RKS71FV1B Heat Pump Indoor Units FTXS50D2V1W(L) FTYN50FV1B FTXS50FV1B FTYN60FV1B FTXS60FV1B FTXS71FV1B Outdoor Units RXS50F2V1B RYN50E3V1B RXS60F2V1B RYN60E3V1B RXS71FV1B Table of Contents...

  • Page 3: Table Of Contents

    SiBE04-705 1. Introduction .....................v 1.1 Safety Cautions ..................v 1.2 Used Icons ....................ix Part 1 List of Functions ..............1 1. List of Functions ..................2 Part 2 Specifications ..............7 1. Specifications ..................8 1.1 Cooling Only.....................8 1.2 Heat Pump .....................12 Part 3 Printed Circuit Board Connector Wiring Diagram ...
  • Page 4 SiBE04-705 3.15 Facility Setting Switch (cooling at low outdoor temperature)....57 Part 5 Operation Manual ............. 59 1. System Configuration................60 2. Instruction....................61 2.1 Safety Precautions .................61 2.2 FTK(X)S 50 D..................63 2.3 FTK(X)S 50/60/71 F, FT(Y) 50/60 F............87 Part 6 Service Diagnosis............113 1.
  • Page 5 SiBE04-705 Part 8 Others ................267 1. Others ....................268 1.1 Test Run from the Remote Controller ..........268 1.2 Jumper Settings ...................269 Part 9 Appendix................. 271 1. Piping Diagrams..................272 1.1 Indoor Units ..................272 1.2 Outdoor Units ..................274 2. Wiring Diagrams..................276 2.1 Indoor Units ..................276 2.2 Outdoor Units ..................278 Index .....................

  • Page 6: Introduction

    SiBE04-705 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 Introduction SiBE04-705 Warning Be sure to wear a safety helmet, gloves, and a safety belt when working at a high place (more than 2m). Insufficient safety measures may cause a fall accident. In case of R410A refrigerant models, be sure to use pipes, flare nuts and tools for the exclusive use of the R410A refrigerant.
  • Page 8 SiBE04-705 Introduction 1.1.2 Cautions Regarding Safety of Users Warning Be sure to use parts listed in the service parts list of the applicable model and appropriate tools to conduct repair work. Never attempt to modify the equipment. The use of inappropriate parts or tools may cause an electrical shock, excessive heat generation or fire.
  • Page 9 Introduction SiBE04-705 Warning Check to make sure that the power cable plug is not dirty or loose, then insert the plug into a power outlet securely. If the plug has dust or loose connection, it may cause an electrical shock or fire. Be sure to install the product correctly by using the provided standard For unitary type installation frame.

  • Page 10: Used Icons

    SiBE04-705 Introduction Caution Be sure to measure the insulation resistance after the repair, and make sure that the resistance is 1 MΩ or higher. Faulty insulation may cause an electrical shock. Be sure to check the drainage of the indoor unit after the repair. Faulty drainage may cause the water to enter the room and wet the furniture and floor.
  • Page 11 Introduction SiBE04-705...

  • Page 12: Part 1 List Of Functions

    SiBE04-705 Part 1 List of Functions 1. List of Functions ..................2 List of Functions...

  • Page 13: List Of Functions

    List of Functions SiBE04-705 List of Functions Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Function Clean Air Purifying Filter — — –10 –10 Operation Limit for Cooling (°CDB) –15 Operation Limit for Heating (°CWB) — Photocatalytic Deodorizing Filter —...
  • Page 14 SiBE04-705 List of Functions Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air Purifying Filter — — Function Clean –10 –10 Operation Limit for Cooling (°CDB) Photocatalytic Deodorizing Filter — — –15 Air Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
  • Page 15 List of Functions SiBE04-705 Category Functions Category Functions Basic Inverter (with Inverter Power Control) Health & Air Purifying Filter — — Function Clean –10 –10 Operation Limit for Cooling (°CDB) Photocatalytic Deodorizing Filter — — –15 Air Purifying Filter with Photocatalytic Operation Limit for Heating (°CWB) —...
  • Page 16 SiBE04-705 List of Functions Category Functions Category Functions Basic Inverter (with Inverter Power Control) — — Health & Function Clean Air Purifying Filter — — –10 –10 Operation Limit for Cooling (°CDB) –15 Operation Limit for Heating (°CWB) — Photocatalytic Deodorizing Filter —...
  • Page 17 List of Functions SiBE04-705 List of Functions...

  • Page 18: Part 2 Specifications

    SiBE04-705 Part 2 Specifications 1. Specifications ..................8 1.1 Cooling Only.....................8 1.2 Heat Pump .....................12 Specifications...

  • Page 19: Specifications

    Specifications SiBE04-705 Specifications Cooling Only 50Hz 220-230-240V Indoor Units FTKS50D2V1W FTKS50D2V1L Models Outdoor Units RKS50F2V1B RKS50F2V1B 5.0 (1.7~5.2) 5.0 (1.7~5.2) Capacity Btu/h 17,100 (5,800~17,700) 17,100 (5,800~17,700) Rated (Min.~Max.) kcal/h 4,300 (1,460~4,470) 4,300 (1,460~4,470) Running Current (Rated) Power Consumption 1,650 (440~1,820) 1,650 (440~1,820) Rated (Min.~Max.) Power Factor...
  • Page 20 SiBE04-705 Specifications 50Hz 220-230-240V Indoor Units FTKS50FV1B FTKS60FV1B Models Outdoor Units RKS50F2V1B RKS60F2V1B 5.0 (1.7~6.0) 6.0 (1.7~6.7) Capacity Btu/h 17,100 (5,800~20,500) 20,500 (5,800~22,900) Rated (Min.~Max.) kcal/h 4,300 (1,460~5,160) 5,160 (1,460~5,760) Running Current (Rated) 7.2-6.9-6.6 9.2-8.8-8.4 Power Consumption 1,550 (440~2,080) 1,990 (440~2,400) Rated (Min.~Max.) Power Factor 97.9-97.7-97.9...
  • Page 21 Specifications SiBE04-705 50Hz 220-230-240V Indoor Units FTKS71FV1B Models Outdoor Units RKS71FV1B 7.1 (2.3~8.5) Capacity Btu/h 24,200 (7,800~29,000) Rated (Min.~Max.) kcal/h 6,110 (1,980~7,310) Running Current (Rated) 10.8-10.4-9.9 Power Consumption 2,350 (570~3,200) Rated (Min.~Max.) Power Factor 98.9-98.2-98.9 COP (Rated) 3.02 (4.04~2.66) φ Liquid Piping φ...
  • Page 22 SiBE04-705 Specifications 50Hz 220-230-240V Indoor Units FTN50FV1B FTN60FV1B Models Outdoor Units RN50E3V1B RN60E3V1B Capacity Btu/h 17,100 20,500 Rated kcal/h 4,300 5,160 Running Current (Rated) 7.2-6.9-6.6 9.2-8.8-8.4 Power Consumption 1,550 1,990 Rated Power Factor 97.9-97.7-97.9 98.3-98.3-98.7 COP (Rated) 3.23 3.02 φ φ...

  • Page 23: Heat Pump

    Specifications SiBE04-705 Heat Pump 50Hz 220-230-240V Indoor Units FTXS50D2V1W FTXS50D2V1L Model RXS50F2V1B RXS50F2V1B Outdoor Units Cooling Heating Cooling Heating 5.0 (1.7~5.2) 5.8 (1.7~6.0) 5.0 (1.7~5.2) 5.8 (1.7~6.0) Capacity Btu/h 17,100 (5,800~17,700) 19,800 (5,800~20,500) 17,100 (5,800~17,700) 19,800 (5,800~20,500) Rated (Min.~Max.) kcal/h 4,300 (1,460~4,470) 4,990 (1,460~5,160) 4,300 (1,460~4,470)
  • Page 24 SiBE04-705 Specifications 50Hz 220-230-240V Indoor Units FTXS50FV1B FTXS60FV1B Model RXS50F2V1B RXS60F2V1B Outdoor Units Cooling Heating Cooling Heating 5.0 (1.7~6.0) 5.8 (1.7~7.7) 6.0 (1.7~6.7) 7.0 (1.7~8.0) Capacity Btu/h 17,100 (5,800~20,500) 19,800 (5,800~26,300) 20,500 (5,800~22,900) 23,900 (5,800~27,300) Rated (Min.~Max.) kcal/h 4,300 (1,460~5,160) 4,990 (1,460~6,620) 5,160 (1,460~5,760) 6,020 (1,460~6,880)
  • Page 25 Specifications SiBE04-705 50Hz 220-230-240V Indoor Units FTXS71FV1B Model RXS71FV1B Outdoor Units Cooling Heating 7.1 (2.3~8.5) 8.2 (2.3~10.2) Capacity Btu/h 24,200 (7,800~29,000) 28,000 (7,800~34,800) Rated (Min.~Max.) kcal/h 6,110 (1,980~7,310) 7,050 (1,980~8,770) Running Current 10.8-10.4-9.9 11.7-11.2-10.7 Rated Power Consumption 2,350 (570~3,200) 2,550 (520~3,820) Rated (Min.~Max.) Power Factor 98.9-98.2-98.9...
  • Page 26 SiBE04-705 Specifications 50Hz 220-230-240V Indoor Units FTYN50FV1B FTYN60FV1B Model RYN50E3V1B RYN60E3V1B Outdoor Units Cooling Heating Cooling Heating Capacity Btu/h 17,100 19,800 20,500 23,900 Rated kcal/h 4,300 4,990 5,160 6,020 Running Current 7.2-6.9-6.6 7.4-7.1-6.8 9.2-8.8-8.4 9.4-9.0-8.6 Rated Power Consumption 1,550 1,600 1,990 2,040 Rated...
  • Page 27 Specifications SiBE04-705 Specifications...

  • Page 28: Part 3 Printed Circuit Board Connector Wiring Diagram

    SiBE04-705 Part 3 Printed Circuit Board Connector Wiring Diagram 1. Printed Circuit Board Connector Wiring Diagram........18 1.1 Indoor Units ....................18 1.2 Outdoor Units ..................22 Printed Circuit Board Connector Wiring Diagram...

  • Page 29: Printed Circuit Board Connector Wiring Diagram

    Printed Circuit Board Connector Wiring Diagram SiBE04-705 1. Printed Circuit Board Connector Wiring Diagram Indoor Units 1.1.1 FTK(X)S 50 D Connectors PCB(1) (Control PCB) Connector for DC fan motor Connector for swing motor (horizontal blades) Connector for centralized control (HA) Connector for display PCB Connector for signal receiver PCB Connector for heat exchanger thermistor...
  • Page 30 SiBE04-705 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1): Control PCB LED A (R4288) PCB(2): Signal Receiver PCB PCB(3): Display PCB LED1 LED2 LED3 RTH1 (R5183) (R4290) PCB(4): INTELLIGENT EYE sensor PCB (R4291) Printed Circuit Board Connector Wiring Diagram...
  • Page 31 Printed Circuit Board Connector Wiring Diagram SiBE04-705 1.1.2 FTK(X)S 50/60/71 F, FT(Y)N 50/60 F Connectors PCB(1) (Control PCB) Connector for DC fan motor Connector for swing motor (horizontal blades) Connector for swing motor (vertical blades) Connector for centralized control (HA) Connector for buzzer PCB Connector for signal receiver PCB Connector for heat exchanger thermistor...

  • Page 32: Display Pcb

    SiBE04-705 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1): Control PCB (indoor unit) LED A (R2860) PCB(2): Signal Receiver PCB PCB(3): Buzzer PCB (R2861) RTH1 (R2862) PCB(4): Display PCB PCB(5): Intelligent Eye sensor PCB LED1 LED2 LED3 (R2863) (R2864) Printed Circuit Board Connector Wiring Diagram...

  • Page 33: Outdoor Units

    Printed Circuit Board Connector Wiring Diagram SiBE04-705 Outdoor Units Connectors PCB(1)(Main PCB) Connector for terminal strip (indoor-outdoor transmission) Connector for electronic expansion valve coil Connector for overload protector 4) S51, S101 Connector for service monitor PCB Connector for fan motor Connector for four way valve coil Connector for thermistors (outdoor air, heat exchanger, and discharge pipe)
  • Page 34 SiBE04-705 Printed Circuit Board Connector Wiring Diagram PCB Detail PCB(1): Main PCB (outdoor unit 50/60 models) FU2(3.15A) (30A) S101 FU3(3.15A) (R5201) PCB(1): Main PCB (outdoor unit 71 models) FU2(3.15A) V100 (30A) FU3(3.15A) (R5202) Printed Circuit Board Connector Wiring Diagram...
  • Page 35 Printed Circuit Board Connector Wiring Diagram SiBE04-705 PCB(2): Service Monitor PCB LED A S102 (R5203) Printed Circuit Board Connector Wiring Diagram...

  • Page 36: Part 4 Function And Control

    SiBE04-705 Part 4 Function and Control 1. Main Functions..................26 1.1 Frequency Principle................26 1.2 Power-Airflow Dual Flaps, Wide Angle Louvers and Auto-Swing ..28 1.3 Fan Speed Control for Indoor Units............29 1.4 Programme Dry Function ...............30 1.5 Automatic Operation................31 1.6 Thermostat Control.................32 1.7 Night Set Mode..................33 1.8 ECONO Mode ..................34 1.9 Intelligent Eye..................35...

  • Page 37: Main Functions

    Main Functions SiBE04-705 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 38 SiBE04-705 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 39: Power-Airflow Dual Flaps, Wide Angle Louvers And Auto-Swing

    Main Functions SiBE04-705 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 40: Fan Speed Control For Indoor Units

    SiBE04-705 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 rotation speed control and Hall IC control.

  • Page 41: Programme Dry Function

    Main Functions SiBE04-705 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 42: Automatic Operation

    SiBE04-705 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 43: Thermostat Control

    Main Functions SiBE04-705 Thermostat Control Thermostat control is based on the difference between the room temperature and the setpoint. Thermostat OFF Condition The temperature difference is in the zone A. Thermostat ON Condition The temperature difference is above the zone C after being in the zone A. The system resumes from defrost control in any zones except A.

  • Page 44: Night Set Mode

    SiBE04-705 Main Functions Night Set Mode When the OFF timer is set, the Night Set circuit automatically activates. The Night Set circuit maintains the airflow setting made by users. The Night Set The Night Set circuit continues heating or cooling the room at the set temperature for the first Circuit one hour, then automatically raises the temperature setting slightly in the case of cooling, or lowers it slightly in the case of heating, for economical operations.

  • Page 45: Econo Mode

    Main Functions SiBE04-705 ECONO Mode Outline FTK(X)S50D The "ECONO mode" reduces the maximum operating current and power consumption by approx. 30% during start up etc.. This mode is particularly convenient for energy-saving-oriented users. It is also a major bonus for those whose breaker capacities do not allow the use of multiple electrical devices and air conditioners.

  • Page 46: Intelligent Eye

    SiBE04-705 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. Processing 1.
  • Page 47 Main Functions SiBE04-705 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 48: Home Leave Operation

    SiBE04-705 Main Functions 1.10 HOME LEAVE Operation Outline FTK(X)S50-71F 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 49: Inverter Powerful Operation

    Main Functions SiBE04-705 1.11 Inverter POWERFUL Operation Outline In order to exploit the cooling and heating capacity to full extent, operate the air conditioner by increasing the indoor fan rotating speed and the compressor frequency. Details of the When POWERFUL button is pushed in each operation mode, the fan speed/setting temperature will be converted to the following states in a period of twenty minutes.

  • Page 50: Other Functions

    SiBE04-705 Main Functions 1.12 Other Functions 1.12.1 Hot Start Function Heat Pump Only In order to prevent the cold air blast that normally comes when heating is started, the temperature of the heat exchanger of the indoor unit is detected, and either the air flow is stopped or is made very weak thereby carrying out comfortable heating of the room.
  • Page 51 Main Functions SiBE04-705 1.12.7 Auto-restart Function Even if a power failure (including one for just a moment) occurs during the operation, the operation restarts in the condition before power failure automatically when power is restored. (Note) It takes 3 minutes to restart the operation because the 3-minute standby function is activated.

  • Page 52: Function Of Thermistor

    SiBE04-705 Function of Thermistor 2. Function of Thermistor Heat Pump Model Electrontic expansion valve Four way valve Compressor (R5204) Outdoor Heat 1. The outdoor heat exchanger thermistor is used for controlling target discharge temperature. The system sets a target discharge temperature according to the outdoor and indoor heat Exchanger exchanger temperature, and controls the electronic expansion valve opening so that the Thermistor...

  • Page 53: Cooling Only Model

    Function of Thermistor SiBE04-705 Cooling Only Model Electrontic expansion valve Compressor (R2828) Outdoor Heat 1. The outdoor heat exchanger thermistor is used for controlling target discharge temperature. Exchanger The system sets a target discharge temperature according to the outdoor and indoor heat exchanger temperature, and controls the electronic expansion valve opening so that the Thermistor target discharge temperature can be obtained.

  • Page 54: Control Specification

    SiBE04-705 Control Specification 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 55: Frequency Control

    Control Specification SiBE04-705 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 56 SiBE04-705 Control Specification 2. Determine upper limit frequency Set a minimum value as an upper limit frequency among the frequency upper limits of the following functions: Compressor protection, input current, discharge pipes, freeze prevention, dew prevention, fin thermistor temperature. 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.

  • Page 57: Controls At Mode Changing / Start-Up

    Control Specification SiBE04-705 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 outdoor air temperature, discharge pipe temperature, and fin temperature (internal temperature of PM1). ≥ →...

  • Page 58: Discharge Pipe Temperature Control

    SiBE04-705 Control Specification 3.3.4 3 Minutes Stand-by Prohibit to turn ON the compressor for 3 minutes after turning it off. (Except when defrosting. (Only for Heat Pump Model).) 3.3.5 Compressor Protection Function When turning the compressor from OFF to ON, the upper limit of frequency must be set as follows.

  • Page 59: Input Current Control

    Control Specification SiBE04-705 Input Current Control Outline The microcomputer calculates the input current during the compressor is running, and set the frequency upper limit from such input current. In case of heat pump model, this control is the upper limit control function of the frequency which takes priority of the lower limit of four way valve activating compensation.

  • Page 60: Freeze-Up Protection Control

    SiBE04-705 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 61: Fan Control

    Control Specification SiBE04-705 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. Fan control for maintaining pressure difference 5.

  • Page 62: Defrost Control

    SiBE04-705 Control Specification 3.10 Defrost Control Outline Heat Pump Only Defrosting is carried out by the cooling cycle (reverse cycle). The defrosting time or outdoor heat exchanger temperature must be more than its fixed value when finishing. Detail Conditions for Starting Defrost The starting conditions must be made with the outdoor air temperature and heat exchanger temperature.

  • Page 63: Electronic Expansion Valve Control

    Control Specification SiBE04-705 3.11 Electronic Expansion Valve Control Outline The following items are included in the electronic expansion valve control. Electronic expansion valve is fully closed 1. Electronic expansion valve is fully closed when turning on the power. 2. Pressure equalizing control Open Control 1.
  • Page 64 SiBE04-705 Control Specification 3.11.1 Fully Closing with Power ON Initialize the electronic expansion valve when turning on the power, set the opening position and develop pressure equalizing. 3.11.2 Pressure Equalization Control When the compressor is stopped, open and close the electronic expansion valve and develop pressure equalization.

  • Page 65: Target Discharge Pipe Temperature Control

    Control Specification SiBE04-705 3.11.7 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. 3.11.8 Target Discharge Pipe Temperature Control Obtain the target discharge pipe temperature from the indoor and outdoor heat exchanger...

  • Page 66: Malfunctions

    SiBE04-705 Control Specification 3.12 Malfunctions 3.12.1 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 0.5A, carry out abnormal adjustment.

  • Page 67: Forced Operation Mode

    Control Specification SiBE04-705 Detail Judgment by Input Current When an output frequency is exceeds 55 Hz (40Hz for 71 class) and the input current is less than specified value, the adjustment is made for insufficient gas. Judgment by Discharge Pipe Temperature When discharge pipe temperature is 20~45°C (depending on the model or mode) higher than target value and the electronic expansion value opening is 480 pulse (max.), the adjustment is made for insufficient gas.

  • Page 68: Facility Setting Switch (Cooling At Low Outdoor Temperature)

    SiBE04-705 Control Specification 3.15 Facility Setting Switch (cooling at low outdoor temperature) Outline Only for RKS50/60F2V1B This function is limited only for facilities (the target of air conditioning is equipment (such as computer)). Never use it in a residence or office (the space where there is a human). Detail You can expand the operation range to –15°C by turning on switch B (SW4) on the PCB.
  • Page 69 Control Specification SiBE04-705 Function and Control...

  • Page 70: Part 5 Operation Manual

    SiBE04-705 Part 5 Operation Manual 1. System Configuration................60 2. Instruction....................61 2.1 Safety Precautions .................61 2.2 FTK(X)S 50 D..................63 2.3 FTK(X)S 50/60/71 F, FT(Y) 50/60 F............87 Operation Manual...

  • Page 71: System Configuration

    System Configuration SiBE04-705 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 SiBE04-705 • Do not block air inlets nor outlets. Impaired air flow may result in insufficient performance or trouble. • 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. •...

  • Page 74: Ftk(X)S 50 D

    SiBE04-705 Instruction FTK(X)S 50 D 2.2.1 Names of Parts Names of parts Indoor Unit ON/OFF Operation Manual...
  • Page 75 Instruction SiBE04-705 Outdoor Unit Indoor Unit 1. Air filter 12. Indoor Unit ON/OFF switch: (page 10.) • Push this switch once to start operation. 2. Titanium Apatite Photocatalytic Push once again to stop it. Air-Purifying Filter: • The operation mode refers to the following •...

  • Page 76: Remote Controller

    SiBE04-705 Instruction Remote Controller ECONO ON/OFF TEMP POWERFUL MODE SWING QUIET COMFORT SENSOR CANCEL TIMER < > ARC433B50, B43 1. Signal transmitter: 8. QUIET button: OUTDOOR UNIT QUIET • It sends signals to the indoor unit. operation (page 15.) 2. Display: 9.

  • Page 77: Preparation Before Operation

    Instruction SiBE04-705 2.2.2 Preparation Before Operation Preparation Before Operation To set the batteries Position + and – correctly! 1. Slide the front cover to take it off. 2. Set two dry batteries (AAA). 3. Set the front cover as before. ATTENTION About batteries •...
  • Page 78 SiBE04-705 Instruction Preparation Before Operation 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 SiBE04-705 To set the clock 1. Press “CLOCK button”. is displayed. blinks. 2. Press “TIMER setting button” to set the clock to the present time. Holding down “ ” or “ ” button rapidly ECONO ON/OFF increases or decreases the time display. TEMP POWERFUL 3.
  • Page 80 SiBE04-705 Instruction 2.2.3 AUTO • DRY • COOL • HEAT • FAN Operation AUTO · DRY · COOL · HEAT · FAN Operation The air conditioner operates with the operation mode of your choice. From the next time on, the air conditioner will operate with the same operation mode.
  • Page 81 Instruction SiBE04-705 To change the air flow rate setting 5. Press “FAN setting button”. DRY mode AUTO or COOL or HEAT or FAN mode Five levels of air flow rate setting from “ ” to “ ” plus “ ” “ ”...

  • Page 82: Adjusting The Air Flow Direction

    SiBE04-705 Instruction 2.2.4 Adjusting the Air Flow Direction Adjusting the Air Flow Direction You can adjust the air flow direction to increase your comfort. To adjust the horizontal blades (flaps) 1. Press “SWING button”. • “ ” is displayed on the LCD and the flaps will begin to swing.
  • Page 83 Instruction SiBE04-705 To start COMFORT AIRFLOW operation 3. Press “COMFORT AIRFLOW button”. • The flap position will change, preventing air from blowing directly on the occupants of the room. • “ ” is displayed on the LCD. 〈COOL/DRY〉 The flap will go up. 〈HEAT〉...

  • Page 84: Powerful Operation

    SiBE04-705 Instruction 2.2.5 POWERFUL Operation POWERFUL Operation POWERFUL operation quickly maximizes the cooling (heating) effect in any operation mode. You can get the maximum capacity . To start POWERFUL operation 1. Press “POWERFUL button”. • POWERFUL operation ends in 20 minutes. Then the system automatically operates ECONO ON/OFF...

  • Page 85: Outdoor Unit Quiet Operation

    Instruction SiBE04-705 2.2.6 OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET operation lowers the noise level of the outdoor unit by changing the frequency and fan speed on the outdoor unit. This function is conve- nient during night. To start OUTDOOR UNIT QUIET operation 1.

  • Page 86: Econo Operation

    SiBE04-705 Instruction 2.2.7 ECONO Operation ECONO Operation ECONO operation is a function which enables efficient operation by lowering the maximum power con- sumption value. To start ECONO operation 1. Press “ECONO button” . • “ ” is displayed on the LCD. To cancel ECONO opera- tion 2.

  • Page 87: Intelligent Eye Operation

    Instruction SiBE04-705 2.2.8 INTELLIGENT EYE Operation INTELLIGENT EYE Operation “INTELLIGENT EYE” is the infrared sensor which detects the human movement. To start INTELLIGENT EYE operation 1. Press “SENSOR button”. • “ ” is displayed on the LCD. To cancel the ECONO ON/OFF INTELLIGENT EYE...
  • Page 88 SiBE04-705 Instruction INTELLIGENT EYE Operation “INTELLIGENT EYE” is useful for Energy Saving Energy saving operation • Change the temperature –2°C in heating / +2°C in cooling / +2°C in dry mode from set temperature. • Decrease the air flow rate slightly in fan operation. (In FAN mode only) Notes on “INTELLIGENT EYE”...

  • Page 89: Timer Operation

    Instruction SiBE04-705 2.2.9 TIMER Operation TIMER Operation Timer functions are useful for automatically switching the air conditioner on or off at night or in the morning. You can also use OFF TIMER and ON TIMER in combination. To use OFF TIMER operation •...
  • Page 90 SiBE04-705 Instruction TIMER Operation 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 ECONO point you like.

  • Page 91: Care And Cleaning

    Instruction SiBE04-705 2.2.10 Care and Cleaning Care and Cleaning Before cleaning, be sure to stop the operation and CAUTION turn the breaker OFF. Units Indoor unit, Outdoor unit and Remote controller 1. Wipe them with dry soft cloth. Front panel 1.

  • Page 92: Air Filter

    SiBE04-705 Instruction Filters 1. Open the front panel. (page 23.) 2. Pull out the air filters. • Push a little upwards the tab at the center of each air filter, then pull it down. 3. Take off the Titanium Apatite Photocatalytic Air-Purifying Filter.

  • Page 93: Before A Long Idle Period

    Instruction SiBE04-705 NOTE • Operation with dirty filters: (1) cannot deodorize the air. (2) cannot clean the air. (3) results in poor heating or cooling. (4) may cause odour. • To order Titanium Apatite Photocatalytic Air-Purifying Filter contact to the service shop there you bought the air conditioner.

  • Page 94: Trouble Shooting

    SiBE04-705 Instruction 2.2.11 Troubleshooting 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. •...
  • Page 95 Instruction SiBE04-705 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 96: Disposal Requirements

    SiBE04-705 Instruction Call the service shop immediately. WARNING When an abnormality (such as a burning smell) occurs, stop operation and turn the breaker OFF. Continued operation in an abnormal condition may result in troubles, electric shocks or fire. Consult the service shop where you bought the air conditioner. Do not attempt to repair or modify the air conditioner by yourself.

  • Page 97: Fault Diagnosis

    Instruction SiBE04-705 Fault diagnosis. FAULT DIAGNOSIS BY REMOTE CONTROLLER In the ARC433 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 “ ” indication flashes on the temperature display section.

  • Page 98: Ftk(X)S 50/60/71 F, Ft(Y) 50/60 F

    SiBE04-705 Instruction FTK(X)S 50/60/71 F, FT(Y) 50/60 F 2.3.1 Names of parts Note: The instruction is for FTK(X)S50/60/71 F as representative. Names of parts Indoor Unit Operation Manual...
  • Page 99 Instruction SiBE04-705 Outdoor Unit 50/60 class 71 class Indoor Unit 1. Air filter 14. HOME LEAVE lamp (red): • Lights up when you use HOME LEAVE 2. Titanium Apatite Photocatalytic Operation. (page 16.) Air-Purifying Filter 15. Indoor Unit ON/OFF switch: 3.
  • Page 100 SiBE04-705 Instruction Remote Controller CANCEL TIMER < > ARC433B70, 71 1. Signal transmitter: 8. QUIET button: OUTDOOR UNIT QUIET • It sends signals to the indoor unit. operation (page 15.) 2. Display: 9. FAN setting button: • It displays the current settings. •...
  • Page 101 Instruction SiBE04-705 2.3.2 Preparation Before Operation Preparation Before Operation To set the batteries Position correctly! 1. Slide the front cover to take it off. 2. Set two dry batteries (AAA). 3. Set the front cover as before. ATTENTION About batteries •...
  • Page 102 SiBE04-705 Instruction Preparation Before Operation 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 controller, such as a curtain, the unit will not operate. •...
  • Page 103 Instruction SiBE04-705 To set the clock 1. Press “CLOCK button”. is displayed. blinks. 2. Press “TIMER setting button” to set the clock to the present time. Holding down “ ” or “ ” button rapidly increases or decreases the time display.
  • Page 104 SiBE04-705 Instruction 2.3.3 AUTO • DRY • COOL • HEAT • FAN Operation AUTO · DRY · COOL · HEAT · FAN Operation The air conditioner operates with the operation mode of your choice. From the next time on, the air conditioner will operate with the same operation mode.
  • Page 105 Instruction SiBE04-705 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 106 SiBE04-705 Instruction 2.3.4 Adjusting the Air Flow Direction Adjusting the Air Flow Direction You can adjust the air flow direction to increase your comfort. To adjust the horizontal blade (flap) 1. Press “SWING button ”. • “ ” is displayed on the LCD and the flaps will begin to swing.
  • Page 107 Instruction SiBE04-705 To 3-D Airflow 1. 3. Press the “SWING button ” and the “SWING button ”: the “ ” and “ ” display will light up and the flap and louvers will move in turn. To cancel 3-D Airflow 2.
  • Page 108 SiBE04-705 Instruction 2.3.5 POWERFUL Operation POWERFUL Operation POWERFUL operation quickly maximizes the cooling (heating) effect in any operation mode. You can get the maximum capacity. To start POWERFUL operation 1. Press “POWERFUL button”. • POWERFUL operation ends in 20 minutes. Then the system automatically operates again with the settings which were used before POWERFUL operation.
  • Page 109 Instruction SiBE04-705 2.3.6 OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET operation lowers the noise level of the outdoor unit by changing the frequency and fan speed on the outdoor unit. This function is convenient during night. To start OUTDOOR UNIT QUIET operation 1.
  • Page 110 SiBE04-705 Instruction 2.3.7 HOME LEAVE Operation HOME LEAVE Operation HOME LEAVE operation is a function which allows you to record your preferred temperature and air flow rate settings. To start HOME LEAVE operation 1. Press “HOME LEAVE button”. • “ ”...
  • Page 111 Instruction SiBE04-705 What’s the HOME LEAVE operation? Is there a set temperature and air flow rate which is most comfortable, a set temperature and air flow rate which you use the most? HOME LEAVE operation is a function that allows you to record your favorite set temperature and air flow rate.
  • Page 112 SiBE04-705 Instruction 2.3.8 INTELLIGENT EYE Operation INTELLIGENT EYE Operation “INTELLIGENT EYE” is the infrared sensor which detects the human movement. To start INTELLIGENT EYE operation 1. Press “SENSOR button”. • “ ” is displayed on the LCD. To cancel the INTELLIGENT EYE operation 2.
  • Page 113 Instruction SiBE04-705 “INTELLIGENT EYE” is useful for Energy Saving. 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 114 SiBE04-705 Instruction 2.3.9 TIMER Operation TIMER Operation Timer functions are useful for automatically switching the air conditioner on or off at night or in the morning. You can also use OFF TIMER and ON TIMER in combination. To use OFF TIMER operation •...
  • Page 115 Instruction SiBE04-705 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 116 SiBE04-705 Instruction 2.3.10 Care and Cleaning Care and Cleaning Before cleaning, be sure to stop the operation and CAUTION turn the breaker OFF. Units Indoor unit, Outdoor unit and Remote controller 1. Wipe them with dry soft cloth. Front panel 1.
  • Page 117 Instruction SiBE04-705 Filters 1. Open the front panel. (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 Titanium tabs (3 tabs at top) Apatite Photocatalytic Air-Purifying Filter.
  • Page 118 SiBE04-705 Instruction NOTE • Operation with dirty filters: (1) cannot deodorize the air. (2) cannot clean the air. (3) results in poor heating or cooling. (4) may cause odour. • To order Titanium Apatite Photocatalytic Air-Purifying Filter contact to the service shop there you bought the air conditioner.
  • Page 119 Instruction SiBE04-705 2.3.11 Troubleshooting 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. •...
  • Page 120 SiBE04-705 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 121 Instruction SiBE04-705 Call the service shop immediately. WARNING When an abnormality (such as a burning smell) occurs, stop operation and turn the breaker OFF. Continued operation in an abnormal condition may result in troubles, electric shocks or fire. Consult the service shop where you bought the air conditioner. Do not attempt to repair or modify the air conditioner by yourself.
  • Page 122 SiBE04-705 Instruction Fault diagnosis. FAULT DIAGNOSIS BY REMOTE CONTROLLER In the ARC433 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 “ ” indication flashes on the temperature display section.
  • Page 123 Instruction SiBE04-705 Operation Manual...

  • Page 124: Part 6 Service Diagnosis

    SiBE04-705 Part 6 Service Diagnosis 1. Caution for Diagnosis................114 2. Problem Symptoms and Measures .............115 3. Service Check Function ..............116 4. Troubleshooting ..................117 4.1 Error Codes and Description ..............117 4.2 Indoor Unit PCB Abnormality ...............118 4.3 Freeze-up Protection Control or High Pressure Control.......119 4.4 Fan Motor (DC Motor) or Related Abnormality........121 4.5 Thermistor or Related Abnormality (Indoor Unit)........123 4.6 Signal Transmission Error (between Indoor and Outdoor Unit) ...124...

  • Page 125: Caution For Diagnosis

    Caution for Diagnosis SiBE04-705 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 126: Problem Symptoms And Measures

    SiBE04-705 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 127: Service Check Function

    Service Check Function SiBE04-705 Service Check Function In the ARC433B 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 “ ” indication flashes on the temperature display section.

  • Page 128: Troubleshooting

    SiBE04-705 Troubleshooting Troubleshooting Error Codes and Description Reference Code Indication Description Page System — Normal Insufficient gas Low-voltage detection or over-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 129: Indoor Unit Pcb Abnormality

    Troubleshooting SiBE04-705 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 Faulty connector connection Causes Troubleshooting...

  • Page 130: Freeze-Up Protection Control Or High Pressure Control

    SiBE04-705 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 131 Troubleshooting SiBE04-705 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.06 Check the air passage. Refer to P.156 Is there any Provide sufficient air passage. short-circuit? Check the intake air filter. Is it very dirty? Clean the air filter.

  • Page 132: Fan Motor (Dc Motor) Or Related Abnormality

    SiBE04-705 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 does not reach the demanded rotation speed of the target tap, and is less than 50% of the maximum fan motor rotation speed.
  • Page 133 Troubleshooting SiBE04-705 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.154 and rotate fan by hand. Does fan rotate Replace fan motor. smoothly? Turn power ON and operate fan.

  • Page 134: Thermistor Or Related Abnormality (Indoor Unit)

    SiBE04-705 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 ∗...

  • Page 135: Signal Transmission Error (Between Indoor And Outdoor Unit)

    Troubleshooting SiBE04-705 Signal Transmission Error (between Indoor and Outdoor Unit) 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 136 SiBE04-705 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.10 Check the indoor unit-outdoor unit Refer to P.159 connection wires. Is there any wiring error? Correct the indoor unit-outdoor unit connection wires.

  • Page 137: Outdoor Unit Pcb Abnormality

    Troubleshooting SiBE04-705 Outdoor Unit PCB Abnormality Remote Controller Display Method of Detect within the programme of the microcomputer that the programme is in normal running order. Malfunction Detection Malfunction When the programme of the microcomputer is in abnormal running order. Decision Conditions Supposed...

  • Page 138: Ol Activation (Compressor Overload)

    SiBE04-705 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 139: Compressor Lock

    Troubleshooting SiBE04-705 Compressor Lock Remote Controller Display Method of A compressor lock is detected by checking the compressor running condition through the position detection circuit. Malfunction Detection Malfunction Judging from current waveform generated when high-frequency voltage is applied to the compressor.

  • Page 140: Dc Fan Lock

    SiBE04-705 Troubleshooting 4.10 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 detected by the Hall IC. Malfunction 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 141: Input Over Current Detection

    Troubleshooting SiBE04-705 4.11 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 the compressor running. Malfunction 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 142 SiBE04-705 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.07 ∗ 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.157 take the following procedure.

  • Page 143: Four Way Valve Abnormality

    Troubleshooting SiBE04-705 4.12 Four Way Valve Abnormality Remote Controller Display Method of The room temperature thermistor, the indoor unit heat exchanger thermistor, the outdoor temperature thermistor and the outdoor unit heat exchanger thermistor are checked to see if Malfunction they function within their normal ranges in the operating mode. Detection Malfunction A following condition continues over 1 minute after operating 10 minutes.
  • Page 144 SiBE04-705 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.05 Refer to P.155 Four way valve coil Correct. disconnected (loose)? Check No.06 Refer to P.156 Harness out of connector? Reconnect.

  • Page 145: Discharge Pipe Temperature Control

    Troubleshooting SiBE04-705 4.13 Discharge Pipe Temperature Control Remote Controller Display Method of The discharge pipe temperature control (stop, frequency drooping, etc.) is checked with the temperature being detected by the discharge pipe thermistor. Malfunction Detection Malfunction If a stop takes place 6 times successively due to abnormal discharge pipe temperature, the system will be shut down.

  • Page 146: High Pressure Control In Cooling

    SiBE04-705 Troubleshooting 4.14 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 temperature being sensed by the heat exchanger thermistor exceeds the limit. Malfunction Detection Malfunction Activated when the temperature being sensed by the heat exchanger thermistor rises above 65°C.
  • Page 147 Troubleshooting SiBE04-705 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.04 Check the installation space. Refer to P.154 Check No.07 Abnormal Check No.06 Installation condition Change the air outlet grille check position.

  • Page 148: Compressor Sensor System Abnormality

    SiBE04-705 Troubleshooting 4.15 Compressor Sensor System Abnormality Remote Controller Display Method of Fault condition is identified by the supply voltage and the DC voltage which is detected before the compressor startup. Malfunction Fault condition is identified by compressor current which is detected right after the Detection compressor startup.
  • Page 149 Troubleshooting SiBE04-705 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Turn off the power Reactor connection check Connection OK? Connect properly. Compressor connection check Connection OK? Connect properly. Disconnect the reactor from the outdoor unit PCB and measure the resistance Reactor check...

  • Page 150: Position Sensor Abnormality

    SiBE04-705 Troubleshooting 4.16 Position Sensor Abnormality Remote Controller Display Method of A compressor startup failure is detected by checking the compressor running condition through the position detection circuit. Malfunction Detection Malfunction The compressor fails to start in about 15 seconds after the compressor run command signal is sent.

  • Page 151: Ct Or Related Abnormality

    Troubleshooting SiBE04-705 4.17 CT or Related Abnormality Remote Controller Display Method of A CT or related error is detected by checking the compressor running frequency and CT- detected input current. Malfunction 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 0.5 A.) Decision If this error repeats 4 times, the system will be shut down.
  • Page 152 SiBE04-705 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.160 again. Get the system started. ∗...

  • Page 153: Thermistor Or Related Abnormality (Outdoor Unit)

    Troubleshooting SiBE04-705 4.18 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. [A thermistor error is detected by checking the temperature.] Malfunction Detection Malfunction...
  • Page 154 SiBE04-705 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.06 Turn on the power again. Refer to P.156 Error displayed again Reconnect. on remote controller? Connector or thermistor Reconnect.

  • Page 155: Electrical Box Temperature Rise

    Troubleshooting SiBE04-705 4.19 Electrical Box Temperature Rise Remote Controller Display Method of An electrical box temperature rise is detected by checking the radiation fin thermistor with the compressor off. Malfunction Detection Malfunction With the compressor off, the radiation fin temperature is above 95°C. (Reset is made when the temperature drops below 80°C.) Decision Conditions...
  • Page 156 SiBE04-705 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.06 WARNING Turn off the power and turn it on Refer to P.156 again. To cool down the electricals, the outdoor unit fan gets started when the radiation fin temperature rises above 95˚C and stops itself when...

  • Page 157: Radiation Fin Temperature Rise

    Troubleshooting SiBE04-705 4.20 Radiation Fin Temperature Rise Remote Controller Display Method of A radiation fin temperature rise is detected by checking the radiation fin thermistor with the compressor on. Malfunction Detection Malfunction If the radiation fin temperature with the compressor on is above 105°C, The error is cleared when the temperature drops below 99°C.
  • Page 158 SiBE04-705 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.06 Turn off the power and turn it on Refer to P.156 again to get the system started. Check No.07 Refer to P.157 Error displayed again?

  • Page 159: Output Over Current Detection

    Troubleshooting SiBE04-705 4.21 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 160 SiBE04-705 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.07 reconnected for part replacement, for example, and the system is interrupted by an output over-current, take the following procedure.

  • Page 161: Insufficient Gas

    Troubleshooting SiBE04-705 4.22 Insufficient Gas Remote Controller Display Method of Gas shortage detection I : A gas shortage is detected by checking the CT-detected input current value and the compressor running frequency. Malfunction 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 162 SiBE04-705 Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector, Caution or parts damage may be occurred. Check No.04 Refer to P.154 Any thermistor Reconnect in position. disconnected? * Discharge pipe thermistor * Indoor / outdoor unit heat exchanger thermistor * Room temperature thermistor Check No.06 * Outdoor air thermistor...

  • Page 163: Low-Voltage Detection Or Over-Voltage Detection

    Troubleshooting SiBE04-705 4.23 Low-voltage Detection or Over-voltage Detection Remote Controller Display Method of An abnormal voltage rise or drop is detected by checking the detection circuit or DC voltage detection circuit. Malfunction 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 164: Signal Transmission Error On Outdoor Unit Pcb

    SiBE04-705 Troubleshooting 4.24 Signal Transmission Error on Outdoor Unit PCB Remote Controller Display Method of Communication error between microcomputer mounted on the main microcomputer and PM1. Malfunction Detection Malfunction When the data sent from the PM1 can not be received successively for 9 sec. Decision The abnormality is determined if the above fault conditions occurs once.

  • Page 165: Check

    Check SiBE04-705 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). 3. Check motor control voltage (pins 4-3). 4. Check rotation command voltage output (pins 4-2). 5.

  • Page 166: Four Way Valve Performance Check

    SiBE04-705 Check 5.1.3 Four Way Valve Performance Check Check No.05 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 220-240 V with Replace the outdoor unit compressor on? PCB.

  • Page 167: Thermistor Resistance Check

    Check SiBE04-705 5.1.4 Thermistor Resistance Check Check No.06 Remove the connectors of the thermistors on the PCB, and measure the resistance of each thermistor using tester. The relationship between normal temperature and resistance is shown in the graph and the table below.

  • Page 168: Installation Condition Check

    SiBE04-705 Check 5.1.5 Installation Condition Check Check No.07 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 169: Discharge Pressure Check

    Check SiBE04-705 5.1.6 Discharge Pressure Check Check No.08 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 170: Power Supply Waveforms Check

    SiBE04-705 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 171: Capacitor Voltage Check

    Check SiBE04-705 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 172: Main Circuit Electrolytic Capacitor Check

    SiBE04-705 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 173 Check SiBE04-705 Service Diagnosis...

  • Page 174: Part 7 Removal Procedure

    SiBE04-705 Part 7 Removal Procedure 1. Indoor Unit...................164 1.1 FTK(X)S 50 D..................164 1.2 FTK(X)S 50/60/71 F, FT(Y)N 50/60 F ..........195 2. Outdoor Unit..................213 2.1 RK(X)S 50/60 F, R(Y)N 50/60 E............213 2.2 RK(X)S 71 F ..................236 Removal Procedure...

  • Page 175: Indoor Unit

    Indoor Unit SiBE04-705 1. Indoor Unit FTK(X)S 50 D 1.1.1 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. Appearance feature Warning Dangerous: High voltage A high voltage is applied to all the electric circuits of this...
  • Page 176 SiBE04-705 Indoor Unit Step Procedure Points 3. Removing the titanium apatite photocatalytic air- purifying filter The titanium apatite The titanium apatite photocatalytic air- photocatalytic air-purifying purifying filter is Air filter filter is not marked for attached to the back of difference between the right the air filter.

  • Page 177: Removal Of Front Panel

    Indoor Unit SiBE04-705 1.1.2 Removal of 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. Removing the front panel Put your fingers on the right and left projections of the front panel, and open the panel over the...
  • Page 178 SiBE04-705 Indoor Unit Step Procedure Points Remove the front panel. Caution on Mounting When mounting the front panel, fit the right and left rotary shafts one by one into the grooves and fully push them in position. (R4316) Removal Procedure...

  • Page 179: Removal Of Front Grille

    Indoor Unit SiBE04-705 1.1.3 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. Removing the service cover Remove the screw of Preparation the service cover.
  • Page 180 SiBE04-705 Indoor Unit Step Procedure Points Remove the screw covers (one each at the right and left). (R4321) Remove the screws When installing the indoor (one each at the right unit, drive the screws with and left). the horizontal blades open or removed.
  • Page 181 Indoor Unit SiBE04-705 Step Procedure Points Put your fingers into the front grille and lift the grille up to unfasten the centre hook. (R4325) Unfasten the right hook also by putting your fingers into the grille and lifting it. (R4326) Remove the front grille Caution on Mounting by tilting the upper part...
  • Page 182 SiBE04-705 Indoor Unit 1.1.4 Removal of 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. Removing the horizontal blade (large) Open the horizontal Cautions on Mounting blade (large).
  • Page 183 Indoor Unit SiBE04-705 Step Procedure Points 2. Removing the horizontal blade (small) Remove the horizontal blade (small) while bending the fixed part at the center slightly. Unfasten the left side. Unfasten the key type fixing shaft at the right side. Removal Procedure...
  • Page 184 SiBE04-705 Indoor Unit Step Procedure Points 3. Removing the vertical blade Unfasten the hooks at the shaft mounting part by pressing them with a flat screwdriver. Unfasten the hooks at the upper 2 positions. Remove the vertical 6 vertical blades are united blade toward yourself.

  • Page 185: Removal Of Electrical Box

    Indoor Unit SiBE04-705 1.1.5 Removal of Electrical Box Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points The figure shows the Preparation connections of wire Remove the front grille harnesses.
  • Page 186 SiBE04-705 Indoor Unit Step Procedure Points Remove the drip proof Put any excess wires behind plate by removing the the power supply lead wire. screw. Replace the heat exchanger thermistor. Use care not to lose the retainer of thermistor. Heat exchanger Retainer of thermistor thermistor...
  • Page 187 Indoor Unit SiBE04-705 Step Procedure Points Release the hook at the upper far side by pressing it from above and pulling the box toward yourself. Lift up the electrical box There is a hook also at the and pull it toward lower part of the back.

  • Page 188: Removal Of Pcb

    SiBE04-705 Indoor Unit 1.1.6 Removal of Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Removing the shelter The figure shows the Preparation appearance of the Remove the electrical box electrical box.
  • Page 189 Indoor Unit SiBE04-705 Step Procedure Points 3. Removing the terminal board Dismount the terminal board by removing the screw. 4. Removing the signal receiver unit Remove the signal receiver unit by unfastening the hooks (one each at the right and left). Remove the electrical box (cover) by unfastening the hooks...
  • Page 190 SiBE04-705 Indoor Unit Step Procedure Points Remove the electrical box by sliding it to the left. Disconnect the wire harness. 5. Removing the signal receiver PCB Remove the signal receiver PCB by opening the hooks at 3 positions. Disconnect the connector from the signal receiver PCB.
  • Page 191 Indoor Unit SiBE04-705 Step Procedure Points 6. Removing the INTELLIGENT EYE PCB Remove the INTELLIGENT EYE INTELLIGENT EYE fixing plate by twisting it fixing plate clockwise. (R4363) Remove the INTELLIGENT EYE PCB by unfastening the hook. Hook (R4364) Disconnect the connector from the INTELLIGENT EYE PCB.
  • Page 192 SiBE04-705 Indoor Unit Step Procedure Points 7. Removing the display The figure shows the connection of wire harness for the display PCB. Remove the display PCB by unfastening the 2 hooks. Disconnect the connector from the display PCB. 8. Removing the control PCB Dismount the control PCB by removing the 2 hooks.
  • Page 193 Indoor Unit SiBE04-705 Step Procedure Points Lift up the bottom of the When mounting the control control PCB and pull it PCB, make sure that it is out. fixed by upper hooks. The figures show the Lead-free solder (PbF) is names of the PCB used for the PCB.

  • Page 194: Removal Of Drain Pan Unit

    SiBE04-705 Indoor Unit 1.1.7 Removal of Drain Pan Unit Procedure Warning Be sure to turn off all power supplies at least 10 min. before disassembling work. Step Procedure Points 1. Removing the drain pan Preparation unit Remove the electrical box according to the “Removal Lift up the indoor unit of Electrical Box.”...
  • Page 195 Indoor Unit SiBE04-705 Step Procedure Points Remove the drain pan Caution on Mounting toward yourself from Make sure that the hook at the indoor unit body. the left side is fitted in the groove. 2. Removing the swing motor Remove the screw of the swing motor.
  • Page 196 SiBE04-705 Indoor Unit Step Procedure Points 3. Removing the crank assembly Remove the screw of the crank assembly. Remove the crank assembly by unfastening the hook. The figure shows the position of the hook when the crank assembly has been removed.
  • Page 197 Indoor Unit SiBE04-705 Step Procedure Points Remove the drain cap located at the left side of the drain pan unit. Insert the drain hose to the left side. Press the removed Use a 4mm Allen wrench. drain plug into the right side with an Allen Caution wrench (4mm).

  • Page 198: Removal Of Fan Motor

    SiBE04-705 Indoor Unit 1.1.8 Removal of Fan Motor Procedure Warning Be sure to turn off all power supplies at least 10 min. before disassembling work. Step Procedure Points Undo the fan motor Preparation lead wires from the Remove the drain pan unit hooks.
  • Page 199 Indoor Unit SiBE04-705 Step Procedure Points Unfasten the hook (a) of the fan motor fixing plate with your thumb. Unfasten the hook (c). Remove the fan motor. Removal Procedure...

  • Page 200: Removal Of Heat Exchanger

    SiBE04-705 Indoor Unit 1.1.9 Removal of Heat Exchanger Procedure Warning Be sure to turn off all power supplies at least 10 min. before disassembling work. Step Procedure Points 1. Disconnecting the Preparation refrigerant pipe Remove the drain pan unit according to the “Removal Remove the screws of Drain Pan Unit.”...
  • Page 201 Indoor Unit SiBE04-705 Step Procedure Points 2. Removing the indoor unit Remove the indoor unit from the installation plate. 3. Removing the heat exchanger Unfasten the hook of the pipe fixing plate at the back of the unit and pull out the pipe. Widen the auxiliary pipe by about 10-20 degrees.
  • Page 202 SiBE04-705 Indoor Unit Step Procedure Points After unfastening the When mounting the heat lower hooks, hold up exchanger, make sure that the heat exchanger by the hook (left) is fastened. its left side and lift it up toward yourself. When the left side is lifted, the hook at the right side comes off position.

  • Page 203: Removal Of Fan Rotor

    Indoor Unit SiBE04-705 1.1.10 Removal of Fan Rotor Procedure Warning Be sure to turn off all power supplies at least 10 min. before disassembling work. Step Procedure Points 1. Removing the drip proof Preparation plate Remove the heat exchanger according to the “Removal of Heat Exchanger.”...
  • Page 204 SiBE04-705 Indoor Unit Step Procedure Points Unfasten the hook (a) of the fan motor fixing plate with your thumb and unfasten the hook (b). The fan motor fixing plate can be removed from the unit when the hook (c) is unfastened. 2.
  • Page 205 Indoor Unit SiBE04-705 Step Procedure Points 3. Removing the bearing Remove the screw of the drip proof plate (left). The drip proof plate can be removed when the hooks at 2 positions are unfastened. Press the rubber-made bearing with force from outside.

  • Page 206: Ftk(X)S 50/60/71 F, Ft(Y)N 50/60 F

    SiBE04-705 Indoor Unit FTK(X)S 50/60/71 F, FT(Y)N 50/60 F 1.2.1 Removal of 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 Room temperature sensor (thermistor) (R6699)
  • Page 207 Indoor Unit SiBE04-705 Procedure Points Step 3. Remove an “titanium apatite photocatalytic air purifying filter”. Push up the bottom of The right and left filters are an air purifying filter to interchangeable. undo the hooks (2 on lower, 3 on upper) and take the filter out.
  • Page 208 SiBE04-705 Indoor Unit Procedure Points Step 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 209 Indoor Unit SiBE04-705 1.2.2 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. Remove the service cover. Loosen the screw and remove the service cover by the knob.
  • Page 210 SiBE04-705 Indoor Unit Procedure Points Step Undo the 3 hooks on The front grille has 3 hooks the top of the front on the center and the both grille. sides of the upper part. Refer to the removal procedure in a reverse way when reassembling.
  • Page 211 Indoor Unit SiBE04-705 1.2.3 Removal of 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 212 SiBE04-705 Indoor Unit Procedure Points Step 2. Remove the vertical blades. Undo the right and left pivots. Undo the 3 hooks. Pull the vertical blades rightwards and remove (R6706) Removal Procedure...
  • Page 213 Indoor Unit SiBE04-705 1.2.4 Removal of 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 214 SiBE04-705 Indoor Unit Procedure Points Step 4. Remove the electrical box. Disconnect the 4 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 motor (S1).
  • Page 215 Indoor Unit SiBE04-705 Procedure Points Step Dislocate the electrical The electrical box has a box to the left and undo hook on its back. the back hook. Pull the electrical box Catch the back hook of the out towards you. electrical box when reassembling.
  • Page 216 SiBE04-705 Indoor Unit Procedure Points Step Press the receiver units Release the hooks on the down and undo the upper side. hooks on the upper side, and then undo the hooks on the lower side. Cut the clamp. The receiver units Remove the receiver units contain 4 PCBs.
  • Page 217 Indoor Unit SiBE04-705 Procedure Points Step 5. Remove the control PCB. Undo the 2 hooks on the lower side, and then the 2 hooks on the upper side. Remove the control PCB. Control PCB (indoor unit) S1: connector for the fan motor S21: S26: connector for...
  • Page 218 SiBE04-705 Indoor Unit Procedure Points Step 7. Remove the swing motor for vertical blades. Release the swing axis Releasing the swing axis on the right side. Loosen the 2 screws and detach the swing motor assembly. Loosen the 2 screws 6 hooks hold the assembly.
  • Page 219 Indoor Unit SiBE04-705 1.2.5 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 Remove the electrical Caution box. If gas leaks, repair the spot of 1.
  • Page 220 SiBE04-705 Indoor Unit Procedure Points Step 2. Remove the indoor unit. Detach the indoor unit from the installation plate. 3. Remove the piping fixture. Release the hook on the upper side of the piping fixture on the back of the unit. 4.
  • Page 221 Indoor Unit SiBE04-705 Procedure Points Step Release the hooks on the left side. Push the fixing hooks on the right side and release. Pull the heat exchanger Caution to the front side and When removing or undo the hooks reinstalling heat exchanger, completely, and then lift be sure to wear protective gloves or wrap the heat...

  • Page 222: Fan Motor

    SiBE04-705 Indoor Unit 1.2.6 Removal of 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 2 screws. You can remove the fan rotor without detaching the right side panel.
  • Page 223 Indoor Unit SiBE04-705 Procedure Points Step 3. Remove the motor. Remove the fan rotor. 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 224: Outdoor Unit

    SiBE04-705 Outdoor Unit 2. Outdoor Unit RK(X)S 50/60 F, R(Y)N 50/60 E 2.1.1 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.
  • Page 225 Outdoor Unit SiBE04-705 Procedure Points Step The front grille has 4 hooks. Slide the discharge grille upwards and remove it. Loosen the 6 screws of front panel. Push the front panel and undo the hooks. Lift the clamp plate remove it. Removal Procedure...
  • Page 226 SiBE04-705 Outdoor Unit Procedure Points Step Undo the left side Lift the front panel and hooks, and then the remove it while pushing the right side hook. left side panel inwards. Remove the front panel. Lift the front panel and undo the right side hook.
  • Page 227 Outdoor Unit SiBE04-705 Procedure Points Step 2. Remove the stop valve cover. Loosen the screw of the stop valve cover. Pull down the stop valve cover to undo the hooks and remove it. The stop valve cover has 6 hooks. (R5254) Removal Procedure...
  • Page 228 SiBE04-705 Outdoor Unit 2.1.2 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 229 Outdoor Unit SiBE04-705 Procedure Points Step 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 230 SiBE04-705 Outdoor Unit Procedure Points Step 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 4 screws from the motor.
  • Page 231 Outdoor Unit SiBE04-705 Procedure Points Step 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). (R5265) Removal Procedure...

  • Page 232: Removal Of The Electrical Box

    SiBE04-705 Outdoor Unit 2.1.3 Removal of the 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. Remove the shield plate. Loosen the 2 screws.
  • Page 233 Outdoor Unit SiBE04-705 Procedure Points Step Disconnect the 2 earth wires. Loosen the 3 screws of right side panel. Loosen the fixing screw of the electrical box. Removal Procedure...
  • Page 234 SiBE04-705 Outdoor Unit Procedure Points Step Insert the 2 hooks of the lower part and the 1 hook of the upper back when Hook reassembling. (R5272) Hooks (R5273) Disconnect the connectors of the front side. S20: electronic expansion valve S40: overload protector S80: four way valve S90: thermistors (discharge pipe,...
  • Page 235 Outdoor Unit SiBE04-705 Procedure Points Step Release the clamp and undo the wire from the hook. Lift the electrical box and remove it. Removal Procedure...

  • Page 236: Removal Of The Pcb

    SiBE04-705 Outdoor Unit 2.1.4 Removal of the PCB 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 PCB. Disconnect the connectors for the control PCB (S52, S102).
  • Page 237 Outdoor Unit SiBE04-705 Procedure Points Step Undo the hook on the right. Open the cable way board. Disconnect the 1: Black harnesses. 2: White 3: Red L1: Black L2: Brown N1: White N2: Blue Disconnect the 2 harnesses for the reactor (HR1, HR2).
  • Page 238 SiBE04-705 Outdoor Unit Procedure Points Step Loosen the 3 fixing screws for the main PCB. Undo the 4 hooks. Lift up and remove the PCB. Removal Procedure...

  • Page 239: Removal Of The Sound Blanket

    Outdoor Unit SiBE04-705 2.1.5 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 Remove the sound blanket (back). Remove the sound Since the piping ports on the blanket (outer).
  • Page 240 SiBE04-705 Outdoor Unit Procedure Points Step Remove the sound blanket (top-lower). Remove the sound Since the piping ports on the blanket (inner). sound blanket (inner) are torn easily, remove the blanket carefully. Release the discharge Pay attention to the direction pipe thermistor.

  • Page 241: Removal Of The Four Way Valve

    Outdoor Unit SiBE04-705 2.1.6 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 242: Removal Of The Electronic Expansion Valve

    SiBE04-705 Outdoor Unit 2.1.7 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 In case of 50/60 class heat expansion valve coil.
  • Page 243 Outdoor Unit SiBE04-705 Procedure Points Step Before working, The illustration is different make sure that the depending on the models. refrigerant is empty in the circuit. Caution Heat up the 2 brazed Be careful about the parts of the electronic electronic expansion valve, expansion valve pipes and so on, which were...

  • Page 244: Removal Of The Compressor

    SiBE04-705 Outdoor Unit 2.1.8 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 245 Outdoor Unit SiBE04-705 Procedure Points Step Release the clamp by pliers to detach the wire harness for the compressor. Remove the putty. The illustration is for 50/60 class heat pump models as representative. Before working, make sure that the refrigerant is empty in the circuit.
  • Page 246 SiBE04-705 Outdoor Unit Procedure Points Step Unscrew the nut of the compressor. 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 replacement when...

  • Page 247: Rk(X)S 71 F

    Outdoor Unit SiBE04-705 RK(X)S 71 F 2.2.1 Removal of Outer Panels Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points External appearance from front side. (R6368) 1. Removing the suction The hooks are secured in grille.
  • Page 248 SiBE04-705 Outdoor Unit Step Procedure Points Next, slide the grille downward to undo the 3 Hooks top hooks. (R6371) Remove the suction grille. (R6372) 2. Removing the panel. Remove the 4 screws on the back and 1 screw on the left side panel.
  • Page 249 Outdoor Unit SiBE04-705 Step Procedure Points Remove the 2 screws on the front and 1 screw on the right side panel. (R6374) Lift the top panel and remove it. (R6375) 3. Removing the right side panel. Remove the 5 screws. (R6376) Removal Procedure...
  • Page 250 SiBE04-705 Outdoor Unit Step Procedure Points Slide the panel downward to undo 2 hooks on the back side. (R6377) Hooks (R6378) Hooks Hook Holes Hook Holes (R6379) Removal Procedure...
  • Page 251 Outdoor Unit SiBE04-705 Step Procedure Points Remove the right side panel. (R6983) 4. Removing the front panel Front Panel (2) Remove the 2 screws. Front Panel (1) (R6984) Removal Procedure...
  • Page 252 SiBE04-705 Outdoor Unit Step Procedure Points Slide the panel downward to undo the hook. (R6985) (R6383) Remove the front panel (2). (R6986) Removal Procedure...
  • Page 253 Outdoor Unit SiBE04-705 Step Procedure Points 5. Removing the front panel Remove the discharge grille propeller fan first to remove the Front Panel (1) front panel (1). Remove the 4 screws on the discharge grille. Discharge grille (R6987) Pull the bottom of the discharge grille toward yourself.
  • Page 254 SiBE04-705 Outdoor Unit Step Procedure Points Next, slide the grille downward to undo the 2 hooks at the top. (R6989) Hooks (R6388) Remove the discharge grille. (R6990) Remove the propeller Fan fixing nut : M8 fan fixing nut. (R6991) Removal Procedure...
  • Page 255 Outdoor Unit SiBE04-705 Step Procedure Points Remove the 2 fixing screws on the partition plate. (R6992) Remove the screw at bottom left of the front. (R6993) Remove the screw at bottom of the left side. (R6393) Removal Procedure...
  • Page 256 SiBE04-705 Outdoor Unit Step Procedure Points Remove the screw at bottom of the back side. (R6394) The front panel (1) is provided with a hook on its front. Lift the front panel off position to remove it. Hook (R6994) Removal Procedure...
  • Page 257 Outdoor Unit SiBE04-705 Step Procedure Points Remove the front panel (1). The back is a little complicated in shape. Be sure to detach carefully. (R6995) 6. Removing the rear panel Illustrations are different depending on the models. Remove the fixing screw on the partition plate.
  • Page 258 SiBE04-705 Outdoor Unit Step Procedure Points Slide the panel leftward to undo the hook, and remove the partition plate. Hook (R6997) Remove the 3 screws. (R6998) Remove the wire fixing plate. (R6999) Removal Procedure...
  • Page 259 Outdoor Unit SiBE04-705 Step Procedure Points Undo the holder of the The holder is secured in the thermistor. clearances of the heat exchanger fins. (R6403) Groove (R6404) Remove the 3 fixing screws on the partition plate. (R7000) Removal Procedure...
  • Page 260 SiBE04-705 Outdoor Unit Step Procedure Points Remove the fixing screw from the bottom frame. (R6406) (R7001) Remove the fixing screw from the shut-off valve mounting plate. (R7002) Lift the panel upward to undo the 2 hooks and remove it. Hooks Hooks (R7003) Removal Procedure...
  • Page 261 Outdoor Unit SiBE04-705 Step Procedure Points Remove the rear panel. (R7004) Removal Procedure...
  • Page 262 SiBE04-705 Outdoor Unit 2.2.2 Removal of the 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 fixing screw from the shut-off valve mounting plate. (R7005) Remove the fixing screw on the partition...
  • Page 263 Outdoor Unit SiBE04-705 Step Procedure Points Disconnect the connector for fan motor (S70). The illustration shows arrangement of the fan motor lead wire. Disconnect the connectors of the front side. S20: electronic expansion valve S40: overload protector S80: four way valve S90: thermistors (discharge pipe, outdoor air,...
  • Page 264 SiBE04-705 Outdoor Unit Step Procedure Points Remove the OL wire harness and the compressor wire harness together from the partition. Clamp (R6422) Use long-nose pliers or Detach the clamp. the like to pull out the Just pull the push-mount clamp. type out of position.
  • Page 265 Outdoor Unit SiBE04-705 Step Procedure Points 10 First, slide the box leftward to undo the hook on the right side of the box. (R7009) 11 Lift up the electrical box to remove it. (R7010) Removal Procedure...
  • Page 266 SiBE04-705 Outdoor Unit 2.2.3 Removal of the PCB 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 PCB. Disconnect the connectors for the control PCB (S52, S102).
  • Page 267 Outdoor Unit SiBE04-705 Procedure Points Step Undo the hook on the right. Open the cable way board. Disconnect the 1: Black harnesses. 2: White 3: Red L1: Black L2: Brown N1: White N2: Blue Disconnect the 2 harnesses for the reactor (HR1, HR2).
  • Page 268 SiBE04-705 Outdoor Unit Procedure Points Step Loosen the 3 fixing screws for the main PCB. Undo the 4 hooks. Lift up and remove the PCB. Removal Procedure...
  • Page 269 Outdoor Unit SiBE04-705 2.2.4 Removal of Fan Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the 2 screws Be sure to remove the bottom at the bottom first.
  • Page 270 SiBE04-705 Outdoor Unit 2.2.5 Removal of Coils / Thermistors Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Removing the motorized Illustrations are different valve coil depending on the models.
  • Page 271 Outdoor Unit SiBE04-705 Step Procedure Points Slightly open the sound blanket. (R7011) Remove the sound blanket (top upper). (R7012) Remove the discharge pipe thermistor. (R6455) Removal Procedure...
  • Page 272 SiBE04-705 Outdoor Unit Step Procedure Points Remove the fixture. (R6456) 3. Removing the Four way valve coil and motorized valve coil Remove the screw. (R6457) Remove the Four way valve coil. (R6458) Removal Procedure...

  • Page 273: Removal Of Sound Blanket

    Outdoor Unit SiBE04-705 2.2.6 Removal of Sound Blanket Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Undo the 2 Velcro tapes off the sound blanket, and open the sound blanket (outer sleeve).
  • Page 274 SiBE04-705 Outdoor Unit Step Procedure Points Remove the sound The sound blanket is fragile. blanket (outer sleeve). Be careful of the notches of the compressor mount (3 locations). (R7016) Remove the sound The sound blanket is fragile. blanket (top lower). Carefully pass the discharge pipe through it.
  • Page 275 Outdoor Unit SiBE04-705 Step Procedure Points Remove the sound blanket (outer sleeve). (R7019) Removal Procedure...

  • Page 276: Removal Of Compressor

    SiBE04-705 Outdoor Unit 2.2.7 Removal of 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. (R7020) Pull out the 3 leads U:red, V:yellow, W:blue using long-nose pliers.
  • Page 277 Outdoor Unit SiBE04-705 Removal Procedure...

  • Page 278: Part 8 Others

    SiBE04-705 Part 8 Others 1. Others ....................268 1.1 Test Run from the Remote Controller ..........268 1.2 Jumper Settings ...................269 Others...

  • Page 279: Others

    Others SiBE04-705 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 280: Jumper Settings

    SiBE04-705 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 281 Others SiBE04-705 Others...

  • Page 282: Part 9 Appendix

    SiBE04-705 Part 9 Appendix 1. Piping Diagrams..................272 1.1 Indoor Units ..................272 1.2 Outdoor Units ..................274 2. Wiring Diagrams..................276 2.1 Indoor Units ..................276 2.2 Outdoor Units ..................278 Appendix...

  • Page 283: Piping Diagrams

    Piping Diagrams SiBE04-705 Piping Diagrams Indoor Units 1.1.1 Cooling Only FTKS50D2V1W(L) FTKS50FV1B, FTKS60FV1B FTN50FV1B, FTN60FV1B INDOOR UNIT MAFFLER ASSY HEAT EXCHANGER INDOOR UNIT 7.0CuT 6.4CuT (7.9CuT) THERMISTOR 6.4CuT ON HEAT EXCH. 6.4CuT HEAT EXCHANGER CROSS FLOW FAN FIELD PIPING THERMISTOR (6.4CuT) ON HEAT EXCH.
  • Page 284 SiBE04-705 Piping Diagrams 1.1.2 Heat Pump FTXS50D2V1W(L) FTXS50FV1B, FTXS60FV1B FTYN50FV1B, FTYN60FV1B INDOOR UNIT INDOOR UNIT MAFFLER ASSY HEAT EXCHANGER 7.0CuT 6.4CuT ( 7.9CuT ) THERMISTOR 6.4CuT HEAT EXCHANGER ON HEAT EXCH. 6.4CuT THERMISTOR ON HEAT EXCH. CROSS FLOW FAN CROSS FLOW FAN FIELD PIPING FIELD PIPING ( 6.4CuT )

  • Page 285: Outdoor Units

    Piping Diagrams SiBE04-705 Outdoor Units 1.2.1 Cooling Only RKS50F2V1B, RKS60F2V1B, RN50E3V1B, RN60E3V1B OUTDOOR UNIT HEAT EXCHANGER 7.9CuT OUTDOOR AIR TEMPERATURE THERMISTOR 7.9CuT 7.9CuT 7.9CuT 12.7CuT 7.9CuT CAPILLARY TUBE 1 7.9CuT 4.0CuT MUFFLER 7.9CuT WITH 7.9CuT 4.0CuT 7.9CuT REFRIGERANT FLOW FILTER CAPILLARY TUBE 2 6.4CuT 7.9CuT...
  • Page 286 SiBE04-705 Piping Diagrams 1.2.2 Heat Pump RXS50F2V1B, RXS60F2V1B, RYN50E3V1B, RYN60E3V1B OUTDOOR UNIT 7.9CuT HEAT EXCHANGER OUTDOOR AIR TEMPERATURE THERMISTOR 7.9CuT 7.9CuT 7.9CuT 12.7CuT 7.9CuT CAPILLARY TUBE 1 7.9CuT 4.0CuT MUFFLER 7.9CuT WITH 7.9CuT 4.0CuT 7.9CuT REFRIGERANT FLOW FILTER CAPILLARY TUBE 2 6.4CuT 7.9CuT COOLING...

  • Page 287: Wiring Diagrams

    Wiring Diagrams SiBE04-705 Wiring Diagrams Indoor Units FTKS50D2V1W(L), FTXS50D2V1W(L) FIELD WIRING. PCB3 PCB1 RECTIFIER 3.15A LED1 OUTDOOR LED2 LED3 CAUTION TRANSMISSION CIRCUIT NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS TURNED OFF AND THEN BACK ON AGAIN. t°...
  • Page 288 SiBE04-705 Wiring Diagrams FTN50FV1B, FTN60FV1B FTYN50FV1B, FTYN60FV1B 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...

  • Page 289: Outdoor Units

    Wiring Diagrams SiBE04-705 Outdoor Units 2.2.1 Cooling Only RKS50F2V1B X12A MRM20 3.15A POWER SUPPLY MRM10 6(P) + + + 7(N) X11A TO INDOOR UNIT 3.15A PCB1 SHEET METAL S101 indoor FIELD WIRING t° t° t° 1 S102 PCB2 (OUTDOOR)(DISCHARGE) LED A (CONDENSER) outdoor Z1C~Z5C...
  • Page 290 SiBE04-705 Wiring Diagrams RKS71FV1B 3.15A MRM20 V100 POWER SUPPLY MRM10 6(P) 7(N) X11A TO INDOOR UNIT 3.15A PCB1 SHEET METAL S101 indoor FIELD WIRING t° t° t° S102 PCB2 (OUTDOOR)(DISCHARGE) LED A (CONDENSER) outdoor Z1C~Z7C : FERRITE CORE X1M,X2M : TERMINAL STRIP MRM10,MRM20 : ELECTRONIC EXPANSION VALVE COIL MRC/W...
  • Page 291 Wiring Diagrams SiBE04-705 2.2.2 Heat Pump RXS50F2V1B X12A MRM20 3.15A POWER SUPPLY MRM10 6(P) + + + 7(N) X11A TO INDOOR UNIT 3.15A PCB1 SHEET METAL 1 S51 S101 indoor FIELD WIRING t° t° t° S102 PCB2 (OUTDOOR)(DISCHARGE) LED A (CONDENSER) outdoor Z1C~Z5C...
  • Page 292 SiBE04-705 Wiring Diagrams RXS71FV1B MRM20 3.15A POWER SUPPLY V100 MRM10 6(P) 7(N) X11A TO INDOOR UNIT 3.15A PCB1 SHEET METAL S101 indoor FIELD WIRING t° t° t° S102 PCB2 (OUTDOOR)(DISCHARGE) LED A (CONDENSER) outdoor : FERRITE CORE Z1C~Z7C : TERMINAL STRIP MRM10,MRM20 X1M,X2M : ELECTRONIC EXPANSION VALVE COIL...
  • Page 293 Wiring Diagrams SiBE04-705 Appendix...

  • Page 294: Index

    SiBE04-705 Index Numerics check No.13 ............160 check No.14 ............161 00 .................117 check No.15 ............161 3 minutes stand-by ...........40, 47 clamp plate ............214 coils ..............259 compressor ..........235, 265 A1 .................118 compressor lock ..........128 A5 .................119 compressor overload ...........
  • Page 295 SiBE04-705 E8 ..............130 heat exchanger ........189, 208, 213 EA ..............132 heat exchanger thermistor ........259 F3 ..............134 heating peak-cut control ........49 F6 ..............135 high pressure control ........... 119 H0 ..............137 high pressure control in cooling ......135 H6 ..............139 HOME LEAVE operation .........
  • Page 296 SiBE04-705 S101 ..............22 S102 ..............22 names of parts ..........63, 87 S20 ............22, 223, 252 night set mode ............33 S21 ..........18, 20, 182, 206 S26 ..........18, 20, 182, 206 S27 ..............18, 20 OL activation ............127 S28 ..........
  • Page 297 SiBE04-705 thermistor or related abnormality (indoor unit) ..123 thermistor or related abnormality (outdoor unit) ...142 thermistor resistance check .........156 thermostat control ..........32 TIMER operation ..........78, 103 top panel ............213, 237 troubleshooting ........83, 108, 117 troubleshooting with the LED indication ....114 turning speed pulse input on the outdoor unit PCB check ............161 U0 .................150...
  • Page 298 SiBE04-705 Drawings & Flow Charts ARC433B series ...........116 heating peak-cut control ........49 automatic air flow control ........29 high pressure control in cooling ......135 automatic operation ..........31 HOME LEAVE operation ........37 auto-swing ..............28 indoor unit PCB abnormality ....... 118 buzzer PCB ............21 input current control ..........
  • Page 299 SiBE04-705 FTYN60FV1B ..........273 RXS71FV1B ..........281 RKS50F2V1B ..........274 RYN50E3V1B ..........280 RKS60F2V1B ..........274 RYN60E3V1B ..........280 RKS71FV1B ..........274 RN50E3V1B ..........274 RN60E3V1B ..........274 RXS50F2V1B ..........275 RXS60F2V1B ..........275 RXS71FV1B ..........275 RYN50E3V1B ..........275 RYN60E3V1B ..........275 position sensor abnormality .........139 power supply waveforms check ......159 power transistor check .........160 programme dry function .........30 radiation fin temperature rise .......146...
  • Page 300 Specifications, designs and other content appearing in this brochure are current as of March 2007 but subject to change without notice. SiBE 04-705 Printed in Japan 03/2007 B AK...

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