Daikin SiBE041010 Service Manual
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Daikin SiBE041010 Service Manual

J-series; wall mounted type inverter pair
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SiBE041010
Inverter Pair
Wall Mounted Type J-Series
[Applied Models]
Inverter Pair : Heat Pump

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Summary of Contents for Daikin SiBE041010

  • Page 1 SiBE041010 Inverter Pair Wall Mounted Type J-Series [Applied Models] Inverter Pair : Heat Pump...
  • Page 2 SiBE041010 Inverter Pair Wall Mounted Type J-Series Heat Pump Indoor Units FTX20JV1B ATX20JV1B FTX25JV1B ATX25JV1B FTX35JV1B ATX35JV1B Outdoor Units RX20JV1B ARX20JV1B RX25JV1B ARX25JV1B RX35JV1B ARX35JV1B Table of Contents...

  • Page 3: Table Of Contents

    SiBE041010 1. Introduction .....................v 1.1 Safety Cautions ..................v 1.2 Used Icons ....................ix Part 1 List of Functions ..............1 1. Functions....................2 Part 2 Specifications ..............3 1. Specifications ..................4 Part 3 Printed Circuit Board Connector Wiring Diagram ..... 8 1.
  • Page 4 SiBE041010 2.3 Adjusting the Airflow Direction..............45 2.4 POWERFUL Operation ................47 2.5 ECONO Operation .................48 2.6 TIMER Operation ...................49 Part 6 Service Diagnosis............. 51 1. Caution for Diagnosis................52 1.1 Troubleshooting with LED ..............52 2. Problem Symptoms and Measures ............53 3. Service Check Function ................54 4.
  • Page 5 SiBE041010 2. Outdoor Unit..................122 2.1 Removal of Panels ................122 2.2 Removal of Outdoor Fan / Fan Motor...........124 2.3 Removal of Electrical Box / Control PCB ..........125 2.4 Removal of Sound Blanket..............132 2.5 Removal of Four Way Valve..............134 2.6 Removal of Compressor...............137 Part 8 Others ................

  • Page 6: Introduction

    Introduction SiBE041010 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 SiBE041010 Introduction Warning Be sure to wear a safety helmet, gloves, and a safety belt when working at a high place (more than 2 m). Insufficient safety measures may cause a fall accident. In case of R-410A refrigerant models, be sure to use pipes, flare nuts and tools for the exclusive use of the R-410A refrigerant.
  • Page 8 Introduction SiBE041010 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 SiBE041010 Introduction Warning Check to make sure that the power cable plug is not dirty or loose, then insert the plug into a power outlet securely. If the plug has dust or loose connection, it may cause an electrical shock or fire.

  • Page 10: Used Icons

    Introduction SiBE041010 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.

  • Page 11: Part 1 List Of Functions

    SiBE041010 Part 1 List of Functions 1. Functions....................2 List of Functions...

  • Page 12: Functions

    Functions SiBE041010 1. Functions Category Functions Category Functions Basic Inverter Health & Air-Purifying Filter — — Function (with Inverter Power Control) Clean Operation Limit for Cooling (°CDB) Photocatalytic Deodorizing Filter — — Air-Purifying Filter with Photocatalytic – – Operation Limit for Heating (°CWB) —...

  • Page 13: Part 2 Specifications

    SiBE041010 Part 2 Specifications 1. Specifications ..................4 Specifications...

  • Page 14: Specifications

    Specifications SiBE041010 1. Specifications 50 Hz, 230 V Indoor Units FTX20JV1B FTX25JV1B Model RX20JV1B RX25JV1B Outdoor Units Cooling Heating Cooling Heating 2.0 (1.3 ~ 2.6) 2.5 (1.3 ~ 3.5) 2.5 (1.3 ~ 3.0) 2.8 (1.3 ~ 4.0) Capacity Btu/h 6,800 (4,400 ~ 8,900)
  • Page 15 SiBE041010 Specifications 50 Hz, 230 V Indoor Units FTX35JV1B Model RX35JV1B Outdoor Units Cooling Heating 3.3 (1.3 ~ 3.8) 3.5 (1.3 ~ 4.8) Capacity Btu/h 11,300 (4,400 ~ 13,000) 11,900 (4,400 ~ 16,400) Rated (Min. ~ Max.) kcal/h 2,840 (1,120 ~ 3,270)
  • Page 16 Specifications SiBE041010 50 Hz, 230 V Indoor Units ATX20JV1B ATX25JV1B Model ARX20JV1B ARX25JV1B Outdoor Units Cooling Heating Cooling Heating 2.0 (1.3 ~ 2.6) 2.5 (1.3 ~ 3.5) 2.5 (1.3 ~ 3.0) 2.8 (1.3 ~ 4.0) Capacity Btu/h 6,800 (4,400 ~ 8,900)
  • Page 17 SiBE041010 Specifications 50 Hz, 230 V Indoor Units ATX35JV1B Model ARX35JV1B Outdoor Units Cooling Heating 3.3 (1.3 ~ 3.8) 3.5 (1.3 ~ 4.8) Capacity Btu/h 11,300 (4,400 ~ 13,000) 11,900 (4,400 ~ 16,400) Rated (Min. ~ Max.) kcal/h 2,840 (1,120 ~ 3,270)

  • Page 18: Part 3 Printed Circuit Board Connector Wiring Diagram

    SiBE041010 Part 3 Printed Circuit Board Connector Wiring Diagram 1. Printed Circuit Board Connector Wiring Diagram........9 1.1 Indoor Unit....................9 1.2 Outdoor Unit ...................11 Printed Circuit Board Connector Wiring Diagram...

  • Page 19: Printed Circuit Board Connector Wiring Diagram

    SiBE041010 Printed Circuit Board Connector Wiring Diagram 1. Printed Circuit Board Connector Wiring Diagram Indoor Unit Connectors and PCB(1): Control PCB Other Parts 1) S6 Connector for swing motor (horizontal blade) 2) S26 Connector for display PCB 3) S32 Connector for indoor heat exchanger thermistor...
  • Page 20 Printed Circuit Board Connector Wiring Diagram SiBE041010 PCB Detail PCB(1): Control PCB S200 LED A S32 S403 2P206569-1 PCB(2): Display PCB LED2 LED1 (Solder side) RTH1 3P206563-1 Printed Circuit Board Connector Wiring Diagram...

  • Page 21: Outdoor Unit

    SiBE041010 Printed Circuit Board Connector Wiring Diagram Outdoor Unit Connectors and PCB(1): Filter PCB Other Parts 1) S11 Connector for main PCB 2) AC1, AC2, S Connector for terminal board 3) E1, E2 Terminal for ground 4) HL2, HN2 Connector for main PCB...
  • Page 22 Printed Circuit Board Connector Wiring Diagram SiBE041010 PCB Detail PCB(1): Filter PCB E1, E2 3P206706-1 PCB(2): Main PCB U V W LED A 2P206705-1 Printed Circuit Board Connector Wiring Diagram...

  • Page 23: Part 4 Function And Control

    SiBE041010 Part 4 Function and Control 1. Main Functions..................14 1.1 Frequency Principle................14 1.2 Airflow Direction Control.................16 1.3 Fan Speed Control for Indoor Units............17 1.4 Program Dry Operation ................18 1.5 Automatic Operation................19 1.6 Thermostat Control.................20 1.7 NIGHT SET Mode ..................21 1.8 ECONO Operation .................22 1.9 Inverter POWERFUL Operation .............23...

  • Page 24: Main Functions

    Main Functions SiBE041010 1. Main Functions Frequency Principle Main Control The compressor is frequency-controlled during normal operation. The target frequency is set by the following 2 parameters coming from the operating indoor unit: Parameters The load condition of the operating indoor unit...
  • Page 25 SiBE041010 Main Functions Inverter Features The inverter provides the following features: The regulating capacity can be changed according to the changes in the outdoor temperature and cooling / heating load. Quick heating and quick cooling The compressor rotational speed is increased when starting the heating (or cooling). This enables to reach the set temperature quickly.

  • Page 26: Airflow Direction Control

    Main Functions SiBE041010 Airflow Direction Control Power-Airflow The large flap sends a large volume of air downwards to the floor. The flap provides an optimum control in cooling, dry, and heating mode. Flap Cooling / Dry Mode During cooling or dry mode, the flap retracts into the indoor unit. Then, cool air can be blown far and pervaded all over the room.

  • Page 27: Fan Speed Control For Indoor Units

    SiBE041010 Main Functions Fan Speed Control for Indoor Units Outline Phase control and fan speed control contains 9 steps: LLL, LL, SL, L, ML, M, MH, H, and HH. The airflow rate can be automatically controlled depending on the difference between the room temperature and the target temperature.

  • Page 28: Program Dry Operation

    Main Functions SiBE041010 Program Dry Operation Outline Program dry operation removes humidity while preventing the room temperature from lowering. Since the microcomputer controls both the temperature and airflow rate, the temperature adjustment and fan adjustment buttons are inoperable in this mode.

  • Page 29: Automatic Operation

    SiBE041010 Main Functions Automatic Operation Outline Automatic Cooling / Heating Function When the AUTO mode is selected with the remote controller, the microcomputer automatically determines the operation mode as cooling or heating according to the room temperature and the set temperature at start-up, and automatically operates in that mode.

  • Page 30: Thermostat Control

    Main Functions SiBE041010 Thermostat Control Thermostat control is based on the difference between the room temperature and the target temperature. Thermostat OFF Condition The temperature difference is in the zone A. Thermostat ON Condition The temperature difference returns to the zone C after being in the zone A.

  • Page 31: Night Set Mode

    SiBE041010 Main Functions NIGHT SET Mode Outline When the OFF timer is set, the NIGHT SET Mode is automatically activated. The NIGHT SET Mode keeps the airflow rate setting. Detail The NIGHT SET Mode continues operation at the target temperature for the first one hour, then automatically raises the target temperature slightly in the case of cooling, or lowers it slightly in the case of heating.

  • Page 32: Econo Operation

    Main Functions SiBE041010 ECONO Operation Outline The "ECONO operation" reduces the maximum operating current and power consumption during start-up etc.. This operation is particularly convenient for energy-saving-oriented users. It is also a major bonus for those whose breaker capacities do not allow the use of multiple electrical devices and air conditioners.

  • Page 33: Inverter Powerful Operation

    SiBE041010 Main Functions Inverter POWERFUL Operation Outline In order to exploit the cooling and heating capacity to full extent, operate the air conditioner by increasing the indoor fan rotating speed and the compressor frequency. Detail When POWERFUL button is pressed, the fan speed and target temperature are converted to the following states for 20 minutes.

  • Page 34: Other Functions

    Main Functions SiBE041010 1.10 Other Functions 1.10.1 Hot-Start Function In order to prevent the cold air blast that normally comes when heating operation is started, the temperature of the indoor heat exchanger is detected, and either the airflow is stopped or is made very weak thereby carrying out comfortable heating of the room.

  • Page 35: Function Of Thermistor

    SiBE041010 Function of Thermistor 2. Function of Thermistor Four way valve Compressor (R11582) A Outdoor Heat 1. The outdoor heat exchanger thermistor is used for controlling target discharge pipe temperature. The system sets the target discharge pipe temperature according to the...

  • Page 36: Control Specification

    Control Specification SiBE041010 3. Control Specification Mode Hierarchy Outline There are two modes; the one is the normal operation mode and the other is the forced operation mode for installation and providing service. Detail There are following modes; stop, cooling (includes drying), heating (include defrosting)

  • Page 37: Frequency Control

    SiBE041010 Control Specification Frequency Control Outline Frequency is determined according to the difference between the room temperature and the target temperature. The function is explained as follows. 1. How to determine frequency 2. Frequency command from the indoor unit (Difference between the room temperature and the target temperature) 3.
  • Page 38 Control Specification SiBE041010 Indoor Frequency Command ( ∆ D signal) The difference between the room temperature and the target temperature is taken as the “ ∆ D signal” and is used for frequency command. ∆D ∆D ∆D ∆D Temperature Temperature...

  • Page 39: Controls At Mode Changing / Start-Up

    SiBE041010 Control Specification Controls at Mode Changing / Start-up 3.3.1 Preheating Operation Outline The inverter operation in open phase starts with the conditions of the preheating command from the indoor unit, the outdoor temperature, and the discharge pipe temperature. Outdoor temperature ≥ 7°C → Control A Detail Outdoor temperature <...

  • Page 40: Discharge Pipe Temperature Control

    Control Specification SiBE041010 3.3.4 3-minute Standby Turning on the compressor is prohibited for 3 minutes after turning it off. (Except when defrosting.) 3.3.5 Compressor Protection Function When turning the compressor from OFF to ON, the upper limit of frequency is set as follows.

  • Page 41: Input Current Control

    SiBE041010 Control Specification Input Current Control Outline The microcomputer calculates the input current during the compressor is running, and sets the frequency upper limit from the input current. In case of heat pump model, this control which is the upper limit control of the frequency takes priority to the lower limit of control of four way valve operation compensation.

  • Page 42: Freeze-Up Protection Control

    Control Specification SiBE041010 Freeze-up Protection Control Outline During cooling operation, the signal sent from the indoor unit controls the operating frequency limitation and prevents freezing of the indoor heat exchanger. (The signal from the indoor unit is divided into zones.) Detail The operating frequency limitation is judged with the indoor heat exchanger temperature.

  • Page 43: Outdoor Fan Control

    SiBE041010 Control Specification Outdoor Fan Control 1. Fan OFF delay when stopped The outdoor fan is turned OFF 70 seconds after the compressor stops. 2. Fan ON control to cool down the electrical box The outdoor fan is turned ON when the electrical box temperature is high while the compressor is OFF.

  • Page 44: Defrost Control

    Control Specification SiBE041010 3.10 Defrost Control Outline Defrosting is carried out by the cooling cycle (reverse cycle). The defrosting time or outdoor heat exchanger temperature must be more than a certain value to finish. Detail Conditions for Starting Defrost The starting conditions is determined with the outdoor temperature and the outdoor heat exchanger temperature.

  • Page 45: Electronic Expansion Valve Control

    SiBE041010 Control Specification 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 46 Control Specification SiBE041010 3.11.1 Fully Closing with Power ON The electronic expansion valve is initialized when turning on the power. The opening position is set and the pressure equalization is developed. 3.11.2 Pressure Equalization Control When the compressor is stopped, the pressure equalization control is activated. The electronic expansion valve opens, and develops the pressure equalization.
  • Page 47 SiBE041010 Control Specification 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, the target discharge pipe temperature control is canceled and the target opening of the electronic expansion valve is changed according to the shift.

  • Page 48: Malfunctions

    Control Specification SiBE041010 3.12 Malfunctions 3.12.1 Sensor Malfunction Detection Sensor malfunction may occur in the thermistor. Relating to Thermistor Malfunction 1. Outdoor heat exchanger thermistor 2. Discharge pipe thermistor 3. Radiation fin thermistor 4. Outdoor temperature thermistor 3.12.2 Detection of Overcurrent and Overload...

  • Page 49: Forced Operation Mode

    SiBE041010 Control Specification 3.13 Forced Operation Mode Outline Forced operation mode includes only forced cooling. Detail Item Forced Cooling Conditions 1) The outdoor unit is not abnormal and not in the 3-minute standby mode. 2) The outdoor unit is not operating.

  • Page 50: Part 5 Operation Manual

    SiBE041010 Part 5 Operation Manual 1. System Configuration................41 2. Operation Manual..................42 2.1 Remote Controller ..................42 2.2 AUTO · DRY · COOL · HEAT · FAN Operation ........43 2.3 Adjusting the Airflow Direction..............45 2.4 POWERFUL Operation ................47 2.5 ECONO Operation .................48 2.6 TIMER Operation ...................49...

  • Page 51: System Configuration

    SiBE041010 System Configuration 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 52: Operation Manual

    Operation Manual SiBE041010 2. Operation Manual Illustrations are for FTX models as representative. Remote Controller Remote Controller < > ARC433A87, A88 1. Signal transmitter: 8. FAN setting button: • It sends signals to the indoor unit. • It selects the airflow rate setting.

  • Page 53: Auto · Dry · Cool · Heat · Fan Operation

    SiBE041010 Operation Manual 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 54: To Change The Airflow Rate Setting

    Operation Manual SiBE041010 To change the airflow rate setting 5. Press “FAN setting button”. DRY mode AUTO or COOL or HEAT or FAN mode Five levels of airflow rate setting from “ ” to “ ” plus “ ” “...

  • Page 55: Adjusting The Airflow Direction

    SiBE041010 Operation Manual Adjusting the Airflow Direction Adjusting the Airflow Direction You can adjust the airflow direction to increase your comfort. To adjust the horizontal blades (flaps) 1. Press “SWING button”. • “ ” is displayed on the LCD and the flaps will begin to swing.
  • Page 56 Operation Manual SiBE041010 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. • Airflow rate is set to “AUTO”.

  • Page 57: Powerful Operation

    SiBE041010 Operation Manual 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 20minutes.

  • Page 58: Econo Operation

    Operation Manual SiBE041010 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.

  • Page 59: Timer Operation

    SiBE041010 Operation Manual 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 60: To Use On Timer Operation

    Operation Manual SiBE041010 To use ON TIMER operation • Check that the clock is correct. If not, set the clock to the present time. 1. Press “ON TIMER button”. is displayed. blinks. Press “TIMER Setting button” until the time setting reaches the point you like.

  • Page 61: Part 6 Service Diagnosis

    SiBE041010 Part 6 Service Diagnosis 1. Caution for Diagnosis................52 1.1 Troubleshooting with LED ..............52 2. Problem Symptoms and Measures ............53 3. Service Check Function ................54 4. Troubleshooting ..................57 4.1 Error Codes and Description ..............57 4.2 Indoor Unit PCB Abnormality ..............58 4.3 Freeze-up Protection Control or Heating Peak-cut Control....59...

  • Page 62: Caution For Diagnosis

    Caution for Diagnosis SiBE041010 1. Caution for Diagnosis Troubleshooting with LED Indoor Unit The operation lamp blinks when any of the following errors is detected. 1. When a protection device of the indoor or outdoor unit is activated, or when the thermistor malfunctions.

  • Page 63: Problem Symptoms And Measures

    SiBE041010 Problem Symptoms and Measures 2. Problem Symptoms and Measures Symptom Check Item Details of Measure Reference Page The units does not operate. Check the power supply. Check to make sure that the rated voltage is — supplied. Check the type of the indoor units.

  • Page 64: Service Check Function

    Service Check Function SiBE041010 3. Service Check Function 1. When the timer cancel button is held down for 5 seconds, “ 00 ” indication appears on the Check Method 1 temperature display section. TIMER CANCEL button < ARC433 Series >...
  • Page 65 SiBE041010 Service Check Function Check Method 2 1. Press the center of the TEMP button and the MODE button at the same time. The figure of the ten’s place blinks. (R4273) 2. Press the TEMP▲ or ▼ button and change the figure until you hear the sound of “beep” or “pi pi”.
  • Page 66 Service Check Function SiBE041010 5. Press the TEMP▲ or ▼ button and change the figure until you hear the sound of “beep”. (R4277) 6. Diagnose by the sound. ★ “pi” : The figure of the ten’s place does not accord with the error code.

  • Page 67: Troubleshooting

    SiBE041010 Troubleshooting 4. Troubleshooting Error Codes and Description Reference Error Codes Description Page System — Normal U0★ Refrigerant shortage Low-voltage detection or over-voltage detection Signal transmission error (between indoor and outdoor unit) Unspecified voltage (between indoor and outdoor unit) Indoor...

  • Page 68: Indoor Unit Pcb Abnormality

    Troubleshooting SiBE041010 Indoor Unit PCB Abnormality Remote Controller Display Method of The system checks if the circuit works properly within the microcomputer of the indoor unit. Malfunction Detection Malfunction The system cannot set the internal settings. Decision Conditions Supposed Wrong models interconnected...

  • Page 69: Freeze-Up Protection Control Or Heating Peak-Cut Control

    SiBE041010 Troubleshooting Freeze-up Protection Control or Heating Peak-cut Control Remote Controller Display Method of Freeze-up protection control During cooling operation, the freeze-up protection control (operation halt) is activated Malfunction according to the temperature detected by the indoor heat exchanger thermistor.
  • Page 70 Troubleshooting SiBE041010 Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.06 Check the air passage. Refer to P.92 Is there any short circuit? Provide sufficient air passage.

  • Page 71: Fan Motor (Dc Motor) Or Related Abnormality

    SiBE041010 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 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 72 Troubleshooting SiBE041010 Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Note: The motor may break when the Check No.18 Turn off the power. motor connector is disconnected (Unplug the power cable or turn while remaining power supply.

  • Page 73: Thermistor Or Related Abnormality (Indoor Unit)

    SiBE041010 Troubleshooting Thermistor or Related Abnormality (Indoor Unit) C4 , C9 Remote Controller Display Method of The temperatures detected by the thermistors determine thermistor errors. Malfunction Detection Malfunction The thermistor input is more than 4.96 V or less than 0.04 V during compressor operation.

  • Page 74: Signal Transmission Error (Between Indoor And Outdoor Unit)

    Troubleshooting SiBE041010 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 The data sent from the outdoor unit cannot be received normally, or the content of the data is abnormal.

  • Page 75: Unspecified Voltage (Between Indoor And Outdoor Unit)

    SiBE041010 Troubleshooting Unspecified Voltage (between Indoor and Outdoor Unit) Remote Controller Display Method of The supply power is detected for its requirements (different from pair type and multi type) by the indoor / outdoor transmission signal. Malfunction Detection Malfunction The pair type and multi type are interconnected.

  • Page 76: Outdoor Unit Pcb Abnormality

    Troubleshooting SiBE041010 Outdoor Unit PCB Abnormality Remote Controller Display Method of The system follows the microprocessor program as specified. The system checks to see if the zero-cross signal comes in properly. Malfunction Detection Malfunction The microprocessor program runs out of control.

  • Page 77: Ol Activation (Compressor Overload)

    SiBE041010 Troubleshooting OL Activation (Compressor Overload) Remote Controller Display Method of A compressor overload is detected through compressor OL. Malfunction Detection Malfunction If the error repeats twice, the system is shut down. Reset condition: Continuous run for about 60 minutes without any other error Decision ∗...

  • Page 78: Compressor Lock

    Troubleshooting SiBE041010 4.10 Compressor Lock Remote Controller Display Method of A compressor lock is detected by checking the compressor running condition through the Malfunction position detection circuit. Detection Malfunction Operation stops due to overcurrent. If the error repeats 16 times, the system is shut down.

  • Page 79: Dc Fan Lock

    SiBE041010 Troubleshooting 4.11 DC Fan Lock Remote Controller Display Method of An error is determined with the high-voltage fan motor rotation speed detected by the Hall IC. Malfunction Detection Malfunction The fan does not start in 30 seconds even when the fan motor is running.

  • Page 80: Input Overcurrent Detection

    Troubleshooting SiBE041010 4.12 Input Overcurrent Detection Remote Controller Display Method of An input overcurrent is detected by checking the input current value with the compressor Malfunction running. Detection Malfunction The following current with the compressor running continues for 2.5 seconds.

  • Page 81: Four Way Valve Abnormality

    SiBE041010 Troubleshooting 4.13 Four Way Valve Abnormality Remote Controller Display Method of The room temperature thermistor, the indoor heat exchanger thermistor, the outdoor Malfunction temperature thermistor, and the outdoor heat exchanger thermistor are checked if they function within their normal ranges in each operation mode.
  • Page 82 Troubleshooting SiBE041010 Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.05 Refer to P.91 Four way valve coil Correct it. disconnected (loose)? Check No.06 Refer to P.92 Harness out of connector? Reconnect it.

  • Page 83: Discharge Pipe Temperature Control

    SiBE041010 Troubleshooting 4.14 Discharge Pipe Temperature Control Remote Controller Display Method of An error is determined with the temperature detected by the discharge pipe thermistor. Malfunction Detection Malfunction If the temperature detected by the discharge pipe thermistor rises above °C, the compressor stops.

  • Page 84: High Pressure Control In Cooling

    Troubleshooting SiBE041010 4.15 High Pressure Control in Cooling Remote Controller Display Method of High-pressure control (operation halt, frequency drop, etc.) is activated in cooling operation if Malfunction the temperature sensed by the outdoor heat exchanger thermistor exceeds the limit. Detection Malfunction The temperature sensed by the outdoor heat exchanger thermistor rises above about 60°C.

  • Page 85: Compressor System Sensor Abnormality

    SiBE041010 Troubleshooting 4.16 Compressor System Sensor Abnormality Remote Controller Display Method of The system checks the DC current before the compressor starts. Malfunction Detection Malfunction The DC current before compressor start-up is out of the range 0.5-4.5 V (sensor output...

  • Page 86: Position Sensor Abnormality

    Troubleshooting SiBE041010 4.17 Position Sensor Abnormality Remote Controller Display Method of A compressor start-up failure is detected by checking the compressor running condition through Malfunction the position detection circuit. Detection Malfunction The compressor fails to start in about 15 seconds after the compressor run command signal is sent.
  • Page 87 SiBE041010 Troubleshooting Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.29 Refer to P.99 Turn off the power. Check the power supply voltage. Voltage as rated? Correct the power supply.

  • Page 88: Dc Voltage / Current Sensor Abnormality

    Troubleshooting SiBE041010 4.18 DC Voltage / Current Sensor Abnormality Remote Controller Display Method of DC voltage or DC current sensor abnormality is identified based on the compressor running Malfunction frequency and the input current. Detection Malfunction The compressor running frequency is above 52 Hz.

  • Page 89: Thermistor Or Related Abnormality (Outdoor Unit)

    SiBE041010 Troubleshooting 4.19 Thermistor or Related Abnormality (Outdoor Unit) H9 , J3 , J6 , P4 Remote Controller Display Method of This fault is identified based on the thermistor input voltage to the microcomputer. Malfunction A thermistor fault is identified based on the temperature sensed by each thermistor.
  • Page 90 Troubleshooting SiBE041010 In case of “ H9 ” “ J3 ” “ J6 ” Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.06 Refer to P.92 Turn on the power again.

  • Page 91: Electrical Box Temperature Rise

    SiBE041010 Troubleshooting 4.20 Electrical Box Temperature Rise Remote Controller Display Method of An electrical box temperature rise is detected by checking the radiation fin thermistor with the Malfunction compressor off. Detection Malfunction With the compressor off, the radiation fin temperature is above °C.
  • Page 92 Troubleshooting SiBE041010 Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.07 WARNING Turn off the power and turn it on Refer to P.93 again. To cool the electrical components,...

  • Page 93: Radiation Fin Temperature Rise

    SiBE041010 Troubleshooting 4.21 Radiation Fin Temperature Rise Remote Controller Display Method of A radiation fin temperature rise is detected by checking the radiation fin thermistor with the Malfunction compressor on. Detection Malfunction If the radiation fin temperature with the compressor on is above °C.
  • Page 94 Troubleshooting SiBE041010 Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.07 Refer to P.93 Turn off the power and turn it on again to start the system.

  • Page 95: Output Overcurrent Detection

    SiBE041010 Troubleshooting 4.22 Output Overcurrent Detection Remote Controller Display Method of An output overcurrent is detected by checking the current that flows in the inverter DC section. Malfunction Detection Malfunction A position signal error occurs while the compressor is running.
  • Page 96 Troubleshooting SiBE041010 Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. ∗ An output overcurrent signal may result from wrong internal wiring. If the wires have been disconnected and reconnected and the system is interrupted by an output overcurrent, take the Check No.07...

  • Page 97: Refrigerant Shortage

    SiBE041010 Troubleshooting 4.23 Refrigerant Shortage Remote Controller Display Method of Refrigerant shortage detection I: Malfunction Refrigerant shortage is detected by checking the input current value and the compressor running frequency. If the refrigerant is short, the input current is smaller than the normal value.
  • Page 98 Troubleshooting SiBE041010 Troubleshooting Be sure to turn off the power switch before connecting or disconnecting Caution connectors, or parts may be damaged. Check No.04 Refer to P.90 Any thermistor Replace them in position. disconnected? ∗ Discharge pipe thermistor ∗ Indoor or outdoor heat exchanger thermistor ∗...

  • Page 99: Low-Voltage Detection Or Over-Voltage Detection

    SiBE041010 Troubleshooting 4.24 Low-voltage Detection or Over-voltage Detection Remote Controller Display Method of Low-voltage detection: Malfunction An abnormal voltage drop is detected by the DC voltage detection circuit. Detection Over-voltage detection: An abnormal voltage rise is detected by the over-voltage detection circuit.

  • Page 100: Check

    Check SiBE041010 5. Check How to Check 5.1.1 Electronic Expansion Valve Check Check No.04 Conduct the followings to check the electronic expansion valve (EV). 1. Check to see if the EV connector is correctly connected to the PCB. 2. Turn the power off and on again, and check to see if the EV generate latching sound.

  • Page 101: Four Way Valve Performance Check

    SiBE041010 Check 5.1.2 Four Way Valve Performance Check Check No.05 Turn off the power and turn it on again. ∗ Four way valve coil Start heating operation. Cooling / Dry : No continuity Heating : Continuity voltage at 220 - 240...

  • Page 102: Thermistor Resistance Check

    Check SiBE041010 5.1.3 Thermistor Resistance Check Check No.06 Disconnect the connectors of the thermistors from the PCB, and measure the resistance of each thermistor using tester. The relationship between normal temperature and resistance is shown in the table and the graph below.

  • Page 103: Installation Condition Check

    SiBE041010 Check 5.1.4 Installation Condition Check Check No.07 Installation condition check Check the allowable Abnormal dimensions of the air Change the installation suction and location or direction. discharge area. Normal Is the discharged Change the installation air short-circuited? location or direction.

  • Page 104: Outdoor Fan System Check

    Check SiBE041010 5.1.6 Outdoor Fan System Check Check No.09 DC motor Check the outdoor fan system. Fan motor lead wire connector Outdoor fan running? Reconnect the connector. disconnected? Go to Check No. 15. Outdoor fan system is functioning. (R7159) 5.1.7 Power Supply Waveforms Check Check No.10...

  • Page 105: Power Module Check

    SiBE041010 Check 5.1.8 Inverter Units Refrigerant System Check Check No.11 Refrigerant system check the discharge thermistor disconnected Place the thermistor. from the holder? Check for refrigerant leaks. See the service diagnosis on refrigerant shortage (U0). Replace the refrigerant. (R8259) 5.1.9 Power Module Check Check No.13...

  • Page 106: Rotation Pulse Check On The Outdoor Unit Pcb

    Check SiBE041010 5.1.10 Rotation Pulse Check on the Outdoor Unit PCB Check No.15 <Outdoor fan motor> 1. Check that the voltage between the pins 10-11 is 15 VDC. 2. Check if the Hall IC generates the rotation pulse (0 ~ 15 VDC) 4 times between the pins 10- 12, 10-13, when the fan motor is manually rotated once.

  • Page 107: Indoor Unit Pcb Output Check

    SiBE041010 Check 5.1.11 Indoor Unit PCB Output Check Check No.18 (1) Check the connector for connection. (2) Check the motor control voltage is generated (between the pins 2 and 3). S200 Phase U Free pin Free pin Phase V Free pin...
  • Page 108 Check SiBE041010 5.1.13 Fan Motor Wire / Short Circuit Check Check No.20 (1) Check the connector for connection. (2) Turn the power off. Ω Ω (3) Check if each resistance at the phases U-V and V-W is 90 ~ 100 (between the pins 12-9, and between 9-6).

  • Page 109: Main Circuit Short Check

    SiBE041010 Check 5.1.14 Main Circuit Short Check Check No.29 Note: Check to make sure that the voltage between (+) and (–) of the diode bridge (DB1) is approx. 0 V before checking. Measure the resistance between the pins of the DB1 as below.

  • Page 110: Part 7 Removal Procedure

    SiBE041010 Part 7 Removal Procedure 1. Indoor Unit...................101 1.1 Removal of Air Filter................101 1.2 Removal of Horizontal Blades / Fan Guard..........103 1.3 Removal of Front Panel................105 1.4 Removal of Front Grille ................106 1.5 Removal of Electrical Box / Vertical Blades .........108 1.6 Removal of PCB / Swing Motor............111...

  • Page 111: Indoor Unit

    SiBE041010 Indoor Unit 1. Indoor Unit 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...
  • Page 112 Indoor Unit SiBE041010 Step Procedure Points Pull out the air filter downward and remove (R7983) 3. Remove the Titanium apatite photocatalytic air- purifying filter. The Titanium apatite Air filter photocatalytic air- purifying filter is Titanium apatite attached to the back of...

  • Page 113: Removal Of Horizontal Blades / Fan Guard

    SiBE041010 Indoor Unit Removal of Horizontal Blades / Fan Guard 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 blade. Open the horizontal blade.
  • Page 114 Indoor Unit SiBE041010 Step Procedure Points Remove the horizontal blade. (R7996) 2. Remove the fan guard. Unfasten the hooks at Fan guard the lower part of the fan guard with a flat screwdriver. (R11959) Unfasten the hooks at the upper 2 positions.

  • Page 115: Removal Of Front Panel

    SiBE041010 Indoor Unit 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 Open the front panel over the position where Right side it stops.

  • Page 116: Removal Of Front Grille

    Indoor Unit SiBE041010 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. Remove the screw of Preparation Service cover the service cover.
  • Page 117 SiBE041010 Indoor Unit Step Procedure Points Press each hook, and also lift the grille up to Left Center Right unfasten the hooks. (R8030) Pull the upper part of the front grille. Left Center Right (R8080) Lift the lower part up...

  • Page 118: Removal Of Electrical Box / Vertical Blades

    Indoor Unit SiBE041010 Removal of Electrical Box / 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. Disconnect the connecting Preparation Terminal board Electrical box wires.
  • Page 119 SiBE041010 Indoor Unit Step Procedure Points 2. Remove the electrical box. Remove the screw and disconnect the earth wire. Screw Earth wire (R11319) [S200] Disconnect the connector for fan motor [S200]. (R8005) Remove the screw of the electrical box. (R8006)
  • Page 120 Indoor Unit SiBE041010 Step Procedure Points There is a hook on the Bottom frame bottom frame. When reassembling, fit the rear side of the electrical box to the hook. Hook (R8031) 3. Remove the vertical blade A vertical blade ASSY has 6 Hook ASSY.

  • Page 121: Removal Of Pcb / Swing Motor

    SiBE041010 Indoor Unit Removal of 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 shield plate. Preparation Remove the electrical box...
  • Page 122 Indoor Unit SiBE041010 Step Procedure Points Disconnect the wire harnesses from the terminal board with pliers. (R8008) Indoor heat exchanger thermistor Front (without sleeve) Black Back (with sleeve) White Front (without sleeve) Back Yellow Front /green Heat exchanger earth point (R11956) 2.
  • Page 123 SiBE041010 Indoor Unit Step Procedure Points Disconnect the connector [S27] from the display PCB. The figure shows the [S27]: control PCB [S27] names of the display PCB component parts. Operation lamp ON/OFF button (Forced operation ON/OFF button) Signal receiver TIMER lamp (R8010) 3.
  • Page 124 Indoor Unit SiBE041010 Step Procedure Points Unfasten the 2 hooks at the upper part from the rear side. (R8011) Lift up the upper part of the control PCB, and Control PCB remove it. (R8012) The figure shows the [S6]: swing motor...

  • Page 125: Removal Of Indoor Heat Exchanger

    SiBE041010 Indoor Unit Removal of Indoor Heat Exchanger Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Disconnect the refrigerant Preparation piping. Remove the electrical box according to the “Removal...
  • Page 126 Indoor Unit SiBE041010 Step Procedure Points Disconnect the flare nut for liquid piping with 2 wrenches. (R8018) 2. Remove the indoor unit. When the pipings are disconnected, protect the Remove the indoor unit both openings from entering from the installation moisture.
  • Page 127 SiBE041010 Indoor Unit Step Procedure Points Widen the auxiliary piping to the extent of Auxiliary piping 10°~20°. Remove the screw on the left side and Caution Hook Hook unfasten the hook on When removing or the rear side. reassembling the indoor heat...

  • Page 128: Removal Of Fan Rotor

    Indoor Unit SiBE041010 Removal of Fan Rotor 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 Preparation panel. Remove the indoor heat...
  • Page 129 SiBE041010 Indoor Unit Step Procedure Points 2. Remove the fan rotor and fan motor. The fan motor has 3 Fan rotor projections. The fan rotor has a rotating shaft on the left side. Fan motor Lift up the right side of...
  • Page 130 Indoor Unit SiBE041010 Step Procedure Points Unfasten the 2 hooks of the motor cover. Hooks Motor cover (R8051) Pull out the fan motor The magnet of the fan motor from the fan rotor to is united with the fan rotor.

  • Page 131: Exchange Of Drain Hose

    SiBE041010 Indoor Unit Exchange of Drain Hose Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Remove the heat After removing the drain insulation fixing screw hose, to prevent water...

  • Page 132: Outdoor Unit

    Outdoor Unit SiBE041010 2. Outdoor Unit Removal of Panels Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Appearance features (R7940) Take care not to cut your finger by the fins of the outdoor heat exchanger.
  • Page 133 SiBE041010 Outdoor Unit Step Procedure Points Remove the 3 screws (right: 1 screw, left: 2 Top panel screws) and remove the top panel. Remove the 6 screws of the front panel. Front panel (R12004) Lift up the left side and unfasten the hooks.

  • Page 134: Removal Of Outdoor Fan / Fan Motor

    Outdoor Unit SiBE041010 Removal of Outdoor Fan / 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 outdoor fan. Preparation Fan motor lead wire...

  • Page 135: Removal Of Electrical Box / Control Pcb

    SiBE041010 Outdoor Unit Removal of Electrical Box / Control PCB 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 Preparation panel. Remove the panels according to the “Removal of...
  • Page 136 Outdoor Unit SiBE041010 Step Procedure Points Unfasten the hook on When reassembling, make the rear side. sure to fit the hook. Hook (R7386) Unfasten the hook, and Right side panel lift up the right side panel to remove. Hook (R7387) 2.
  • Page 137 SiBE041010 Outdoor Unit Step Procedure Points Disconnect the connector for electronic expansion valve coil [S20]. [S20] (R7390) Detach the clamp of the lead wire for the electronic expansion valve coil. Clamp (R7391) Disconnect the relay connector for the compressor motor.
  • Page 138 Outdoor Unit SiBE041010 Step Procedure Points Pull out the outdoor heat exchanger thermistor. Clip Outdoor heat exchanger thermistor (R7394) Pay attention so as not to Cut the clamp. lose the clip. Clamp (R7395) Unfasten the hook from The electrical box can be...
  • Page 139 SiBE041010 Outdoor Unit Step Procedure Points 3. Remove the control PCB. Remove the screw on the terminal board. Terminal board Control PCB (R11960) Cut the clamp. (R11238) Remove the 2 screws of the earth terminals. (R11239) Disconnect the 2 terminals of the reactor.
  • Page 140 Outdoor Unit SiBE041010 Step Procedure Points Remove the 3 screws to remove the reactor. Reactor (R11962) Disconnect the connector for thermistors [S90]. [S90] (R7402) Remove the 6 screws. Control PCB (R10717) Disconnect the 3 [S10] connectors for filter PCB [S10] [HN3] [HL3].
  • Page 141 SiBE041010 Outdoor Unit Step Procedure Points Unfasten the 2 hooks. Lift and remove the control PCB. (R7405) Feature of the control [S10] [HN3] [HL3]: filter PCB [S10] [S90] [S20]: electronic expansion valve coil [S70] [S40]: overload protector [S70]: fan motor...

  • Page 142: Removal Of Sound Blanket

    Outdoor Unit SiBE041010 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 1. Remove the partition plate. Remove the 2 screws. (R11964) The partition plate has a hook on the lower side.
  • Page 143 SiBE041010 Outdoor Unit Step Procedure Points Pull the sound blankets (outer and inner 2) out. Sound blanket Sound blanket (outer) (inner 2) (R10720) Pull the sound blanket Since the piping ports on the (inner 1) out. sound blanket are torn easily, remove the blanket carefully.

  • Page 144: Removal Of Four Way Valve

    Outdoor Unit SiBE041010 Removal of 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 1. Remove the peripheries. Remove the four way valve coil and the putty so as not to burn them.
  • Page 145 SiBE041010 Outdoor Unit Step Procedure Points Remove the putty. Putty (R7416) 2. Remove the four way valve. Caution Be careful not to get yourself Before working, burnt with the pipes and other make sure that the parts that are heated by the refrigerant is empty gas brazing machine.
  • Page 146 Outdoor Unit SiBE041010 Step Procedure Points Heat up the 3 brazed If the gas brazing machine fails points of the four way to remove the four way valve, valve. Disconnect the take the steps below. point (b) first. 1. Disconnect the brazed pipe...

  • Page 147: Removal Of Compressor

    SiBE041010 Outdoor Unit 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 1. Remove the peripheries. Warning Remove the four If refrigerant gas leaks during way valve, the the work, ventilate the room.

  • Page 148: Part 8 Others

    SiBE041010 Part 8 Others 1. Others ....................139 1.1 Trial Operation..................139 1.2 Field Settings..................140 1.3 Application of Silicon Grease to a Power Transistor and a Diode Bridge..................141 Others...

  • Page 149: Others

    SiBE041010 Others 1. Others Trial Operation Outline 1. Measure the supply voltage and make sure that it falls in the specified range. 2. Trial operation should be carried out in either cooling or heating mode. 3. Carry out the trial operation in accordance with the operation manual to ensure that all functions and parts, such as louver movement, are working properly.

  • Page 150: Field Settings

    Others SiBE041010 Field Settings 1.2.1 When 2 Units are Installed in 1 Room How to set the different addresses. When 2 indoor units are installed in 1 room, 1 of the 2 pairs of indoor unit and wireless remote controller can be set for different address.

  • Page 151: Application Of Silicon Grease To A Power Transistor And A Diode Bridge

    SiBE041010 Others Application of Silicon Grease to a Power Transistor and a Diode Bridge Applicable All outdoor units using inverter type compressor for room air conditioner. Models When the printed circuit board (PCB) of an outdoor unit is replaced, it is required that silicon grease (*1) is certainly applied to the heat radiation part (the contact point to the radiation fin) of the power transistor and diode bridge.

  • Page 152: Part 9 Appendix

    SiBE041010 Part 9 Appendix 1. Piping Diagrams..................143 1.1 Indoor Unit....................143 1.2 Outdoor Unit ..................144 2. Wiring Diagrams..................145 2.1 Indoor Unit....................145 2.2 Outdoor Unit ..................145 Appendix...

  • Page 153: Piping Diagrams

    SiBE041010 Piping Diagrams 1. Piping Diagrams Indoor Unit FTX20/25/35JV1B, ATX20/25/35JV1B INDOOR UNIT HEAT EXCHANGER 7.0CuT 4.8CuT THERMISTOR 7.0CuT ON HEAT EXCH. 7.0CuT CROSS FLOW FAN FIELD PIPING (6.4CuT) FAN MOTOR FIELD PIPING 9.5CuT (9.5CuT) REFRIGERANT FLOW COOLING HEATING 4D058926E Appendix...

  • Page 154: Outdoor Unit

    Piping Diagrams SiBE041010 Outdoor Unit RX20/25JV1B, ARX20/25JV1B OUTDOOR UNIT OUTDOOR TEMPERATURE HEAT EXCHANGER 7.0CuT THERMISTOR 7.0CuT HEAT EXCHANGER THERMISTOR MOTOR OPERATED VALVE 7.0CuT 6.4CuT 6.4CuT MUFFLER WITH FILTER PROPELLER FAN 9.5CuT FOUR WAY FIELD PIPING VALVE (6.4CuT) ON:HEATING LIQUID STOP...

  • Page 155: Wiring Diagrams

    SiBE041010 Wiring Diagrams 2. Wiring Diagrams Indoor Unit FTX20/25/35JV1B, ATX20/25/35JV1B PCB 2 PCB 1 FIELD WIRING. TRANSMISSION LED1 GRN/YLW CIRCUIT LED2 RECTIFIER OUTDOOR MR10 CAUTION t˚ 3.15A NOTE THAT OPERATION WILL RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS IPM200...
  • Page 156 Daikin Industries, Ltd.’s products are manufactured for export to numerous countries throughout the Warning world. Daikin Industries, Ltd. does not have control over which products are exported to and used in a particular country. Prior to purchase, please therefore confirm with your local authorised importer, distributor and/or retailer whether this product conforms to the applicable standards, and is suitable for use, in the region where the product will be used.

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