Daikin FTXN24KVJU- Manuals

SiUS041111 vii • Do not repair the electrical components with wet hands. Working on the equipment with wet hands may cause an electrical shock. • Do not clean the air conditioner or heat pump by splashing water on it. Washing the unit with water may cause an electrical shock. • Turn off the power wh...

SiUS041111 List of Functions 1 Part 1 List of Functions 1. Functions..................................................................................................... 2

SiUS041111 4 Specifications Part 2 Specifications 1. Specifications .............................................................................................. 5 1.1 Cooling Only ................................................................................................. 5 1.2 Heat Pump .......

Specifications SiUS041111 8 Specifications 1.2 Heat Pump 60 Hz, 208 - 230 V Note:  The data are based on the conditions shown in the table below. Model Indoor Unit FTXN09KEVJU FTXN12KEVJU Outdoor Unit RXN09KEVJU RXN12KEVJU Cooling Heating Cooling Heating Capacity Rated (Min. ~ Max.) kW 2.64 (1.30 ~...

SiUS041111 Printed Circuit Board Connector Wiring Diagram 11 Part 3 Printed Circuit Board Connector Wiring Diagram 1. Indoor Unit................................................................................................. 12 1.1 09/12 Class .........................................................

SiUS041111 Indoor Unit Printed Circuit Board Connector Wiring Diagram 13 PCB Detail PCB(1): Control PCB PCB(2): Display PCB FU1 H1 H3 V1 H2 FG S200 LED A S32 S26 S6 JA JC JB S403 2P206569-4 S27 SW1 (Solder side) LED2 LED1 RTH1 3P206563-1

SiUS041111 20 Function and Control Part 4 Function and Control 1. Main Functions .......................................................................................... 21 1.1 Temperature Control .................................................................................. 21 1.2 Frequency P...

SiUS041111 Main Functions Function and Control 21 1. Main Functions 1.1 Temperature Control Definitions of Temperatures The definitions of temperatures are classified as following.  Room temperature: temperature of lower part of the room  Set temperature: temperature set by remote controller  Roo...

Main Functions SiUS041111 22 Function and Control Inverter Principle To regulate the capacity, a frequency control is needed. The inverter makes it possible to vary the rotation speed of the compressor. The following table explains the conversion principle: Drawing of Inverter The following drawing ...

SiUS041111 Main Functions Function and Control 23 Frequency Limits The following functions regulate the minimum and maximum frequency: Forced Cooling Operation Refer to page 222 for detail. 1.3 Airflow Direction Control Power-Airflow Louver(s) The large louver sends a large volume of air downward to...

Main Functions SiUS041111 24 Function and Control 1.4 Fan Speed Control for Indoor Unit 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 thermistor temperat...

SiUS041111 Main Functions Function and Control 25 COMFORT AIRFLOW Operation 09/12 class  The fan speed is controlled automatically.  The latest command has the priority between POWERFUL and COMFORT AIRFLOW. 1.5 Program Dry Operation Outline Program dry operation removes humidity while preventing t...

Main Functions SiUS041111 26 Function and Control 1.6 Automatic Operation Outline Automatic Cooling / Heating FunctionWhen 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 t...

SiUS041111 Main Functions Function and Control 27 1.7 Thermostat Control Thermostat control is based on the difference between the room thermistor temperature and the target temperature. Thermostat OFF Condition  The temperature difference is in the zone A. Thermostat ON Condition  The temperature...

Main Functions SiUS041111 28 Function and Control 1.8 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, th...

Main Functions SiUS041111 30 Function and Control 1.10 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...

Function of Thermistor SiUS041111 32 Function and Control 2. Function of Thermistor (1) Outdoor Heat Exchanger Thermistor 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 outdoor...

SiUS041111 Control Specification Function and Control 33 3. Control Specification 3.1 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 servicing. Detail For Cooling Only Model For Heat Pump Model Note: Un...

Control Specification SiUS041111 34 Function and Control 3.2 Frequency Control Outline Frequency is determined according to the difference between the room thermistor temperature and the target temperature. The function is explained as follows.1. How to determine frequency2. Frequency command from t...

SiUS041111 Control Specification Function and Control 39 3.4 Discharge Pipe Temperature Control Outline The discharge pipe temperature is used as the internal temperature of the compressor. If the discharge pipe temperature rises above a certain level, the upper limit of frequency is set to keep thi...

Control Specification SiUS041111 40 Function and Control 3.5 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 cont...

SiUS041111 Control Specification Function and Control 41 3.6 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...

Control Specification SiUS041111 42 Function and Control 3.8 Outdoor Fan Control 1. Fan OFF delay when stoppedThe outdoor fan is turned OFF 70 seconds after the compressor stops. 2. Fan ON control to cool down the electrical boxThe outdoor fan is turned ON when the electrical box temperature is high...

SiUS041111 Control Specification Function and Control 45 3.11 Electronic Expansion Valve Control Outline The following items are included in the electronic expansion valve control.Electronic expansion valve is fully closed1. Electronic expansion valve is fully closed when turning on the power.2. Pre...

Control Specification SiUS041111 46 Function and Control 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 Equalizing Control When the compressor is stopp...

SiUS041111 Control Specification Function and Control 47 3.11.7 Control for Disconnection of the Discharge Pipe Thermistor Outline The disconnection of the discharge pipe thermistor is detected by comparing the discharge pipe temperature with the condensation temperature. If the discharge pipe therm...

Control Specification SiUS041111 48 Function and Control 3.12 Malfunctions 3.12.1 Sensor Malfunction Detection Sensor malfunction may occur in the thermistor.Relating to Thermistor Malfunction1. Outdoor heat exchanger thermistor2. Discharge pipe thermistor3. Radiation fin thermistor4. Outdoor temper...

SiUS041111 Operation Manual 49 Part 5 Operation Manual 1. System Configuration ................................................................................ 502. 09/12 Class ............................................................................................... 51 2.1 Remote Controller .....

System Configuration SiUS041111 50 Operation Manual 1. System Configuration After installation and test operation of the room air conditioner are completed, the air conditioner should be handled and operated as described in the following pages. Every user should be informed on the correct method of ...

SiUS041111 09/12 Class Operation Manual 51 2. 09/12 Class 2.1 Remote Controller 7 <ARC452A19> Name of Parts Remote Controller Signal transmitter Receiver • To use the remote controller, aim the transmitter at the indoor unit. If there is anything to block signals between the unit and the remot...

09/12 Class SiUS041111 52 Operation Manual 8  Open the front cover MODE selector button • Selects the operation mode. (AUTO/DRY/COOL/HEAT/FAN) Page 11 Page 18,19 COMFORT button • COMFORT AIRFLOW operation. OFF TIMER button • Cancels the timer setting. Page 15 Page 18 TIMER CANCEL button Page 18,19 ...

SiUS041111 09/12 Class Operation Manual 53 2.2 AUTO · DRY · COOL · HEAT · FAN Operation 2. 11 1. COOL AUTO DRY COOL HEAT FAN Press Display NOTE MODE Notes on each operation mode COOL AUTO · DRY · COOL · HEAT · FAN Operation The air conditioner operates with the operation mode of your choice.From the...

09/12 Class SiUS041111 54 Operation Manual 12  To change the temperature setting Press or • The displayed items on the LCD will change whenever either one of the buttons is pressed. COOL operation 64-90˚F (18-32˚C) HEAT operation 50-86˚F (10-30˚C) AUTO operation 64-86˚F (18-30˚C) DRY or FAN operati...

SiUS041111 09/12 Class Operation Manual 55 2.3 Adjusting the Airflow Direction and Rate 13 Press Adjusting the Airflow Direction and Rate You can adjust the airflow direction to increase your comfort.  To start auto swing Upper and lower airflow direction • “ ” is displayed on the LCD.• The louver ...

09/12 Class SiUS041111 56 Operation Manual 14 Press . 45˚ 5˚ 15˚ 45˚ 50˚ 45˚ 5˚ 0˚ 0˚ 0˚  To adjust the airflow rate setting • Each pressing of advances the airflow rate setting in sequence. • When the airflow is set to “ ”, indoor unit quiet operation will start and the noise from the unit will be...

SiUS041111 09/12 Class Operation Manual 57 2.4 COMFORT AIRFLOW Operation 15 . o COMFORT AIRFLOW Operation The flow of air will be in the upward direction while in COOL operation and in the downward direction while in HEAT operation, which will provide a comfortable wind that will not come in direct ...

09/12 Class SiUS041111 58 Operation Manual 2.5 POWERFUL Operation 16 POWERFUL Operation POWERFUL operation quickly maximizes the cooling (heating) effect in any operation mode. You can get the maximum capacity.  To start POWERFUL operation Press during operation. • POWERFUL operation ends in 20 min...

SiUS041111 09/12 Class Operation Manual 59 2.6 ECONO Operation 17 ECONO Operation ECONO operation is a function which enables efficient operation by limiting the maximum power consumption value.This function is useful for cases in which attention should be paid to ensure a circuit breaker will not t...

09/12 Class SiUS041111 60 Operation Manual 2.7 OFF TIMER Operation OFF 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 • Check that th...

SiUS041111 09/12 Class Operation Manual 61 2.8 ON TIMER Operation 19 ON TIMER Operation  To cancel ON TIMER operation  To use ON TIMER operation  To combine ON TIMER and OFF TIMER • Check that the clock is correct. If not, set the clock to the present time. 1. Press . “ ” blinks. “ ” is displayed...

SiUS041111 15/18/24 Class Operation Manual 65 12 Press or .  To change the temperature setting • The displayed items on the LCD will change whenever either one of the buttons is pressed. COOL operation 64-90˚F (18-32˚C) HEAT operation 50-86˚F (10-30˚C) AUTO operation 64-86˚F (18-30˚C) DRY or FAN op...

15/18/24 Class SiUS041111 68 Operation Manual 3.4 POWERFUL Operation  Notes on POWERFUL operation • When using POWERFUL operation, there are some functions which are not available. • POWERFUL operation will not increase the capacity of the air conditioner if the air conditioner is already in operat...

15/18/24 Class SiUS041111 70 Operation Manual 3.6 ON TIMER Operation 17 ON TIMER Operation  To use ON TIMER operation  To cancel ON TIMER operation • Check that the clock is correct. If not, set the clock to the present time. 1. Press . “ ” blinks. “ ” is displayed on the LCD. • “ ” is no longer d...

SiUS041111 Service Diagnosis 71 Part 6 Service Diagnosis 1. Troubleshooting with LED ......................................................................... 73 1.1 Indoor Unit .................................................................................................. 73 1.2 Outdoor Unit ......

SiUS041111 Troubleshooting with LED Service Diagnosis 73 1. Troubleshooting with LED 1.1 Indoor Unit Operation Lamp 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. 2. W...

Problem Symptoms and Measures SiUS041111 74 Service Diagnosis 2. Problem Symptoms and Measures Symptom Check Item Details of Measure Reference Page The unit does not operate. Check the power supply. Check if the rated voltage is supplied. — Check the type of the indoor unit. Check if the indoor unit...

SiUS041111 Service Check Function Service Diagnosis 75 3. Service Check Function Check Method 1 1. When the timer cancel button is held down for 5 seconds, 00 is displayed on the temperature display screen. 2. Press the timer cancel button repeatedly until a long beep sounds.  The code indication c...

Service Check Function SiUS041111 76 Service Diagnosis Check Method 2 1. Press the 3 buttons (TEMP  , TEMP  , MODE) simultaneously to enter the diagnosis mode. The left-side number blinks. 2. Press the TEMP  or  button and change the figure until you hear the beep(s). 3. Diagnose by the sound. ...

Troubleshooting SiUS041111 78 Service Diagnosis 4. Troubleshooting 4.1 Error Codes and Description  : Displayed only when system-down occurs. Error Codes Description Reference Page System 00 Normal — U0  Refrigerant shortage 112 U2 Low-voltage detection or over-voltage detection 114 U4 Signal tran...

SiUS041111 Troubleshooting Service Diagnosis 79 4.2 Indoor Unit PCB Abnormality Remote Controller Display A1 Method of Malfunction Detection The system checks if the circuit works properly within the microcomputer of the indoor unit. Malfunction Decision Conditions The system cannot set the internal...

Troubleshooting SiUS041111 80 Service Diagnosis 4.3 Freeze-up Protection Control or Heating Peak-cut Control Remote Controller Display A5 Method of Malfunction Detection  Freeze-up protection controlDuring cooling operation, the freeze-up protection control (operation halt) is activated according t...

Troubleshooting SiUS041111 82 Service Diagnosis 4.4 Fan Motor (DC Motor) or Related Abnormality Remote Controller Display A6 Method of Malfunction Detection The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor operation. Malfunction Decision C...

SiUS041111 Troubleshooting Service Diagnosis 85 4.5 Thermistor or Related Abnormality (Indoor Unit) Remote Controller Display C4 , C9 Method of Malfunction Detection The temperatures detected by the thermistors determine thermistor errors. Malfunction Decision Conditions The thermistor input is more...

SiUS041111 Troubleshooting Service Diagnosis 89 4.8 Outdoor Unit PCB Abnormality Remote Controller Display E1 Method of Malfunction Detection  The system follows the microprocessor program as specified.  The system checks to see if the zero-cross signal comes in properly. Malfunction Decision Cond...

SiUS041111 Troubleshooting Service Diagnosis 93 4.12 Input Overcurrent Detection Remote Controller Display E8 Method of Malfunction Detection An input overcurrent is detected by checking the input current value with the compressor running. Malfunction Decision Conditions  The current exceeds about ...

Troubleshooting SiUS041111 96 Service Diagnosis 4.14 Discharge Pipe Temperature Control Remote Controller Display F3 Method of Malfunction Detection An error is determined with the temperature detected by the discharge pipe thermistor. Malfunction Decision Conditions  If the temperature detected by...

Troubleshooting SiUS041111 98 Service Diagnosis 4.15 High Pressure Control in Cooling Remote Controller Display F6 Method of Malfunction Detection High-pressure control (operation halt, frequency drop, etc.) is activated in cooling operation if the temperature sensed by the outdoor heat exchanger th...

Troubleshooting SiUS041111 100 Service Diagnosis 4.16 Compressor System Sensor Abnormality Remote Controller Display H0 Method of Malfunction Detection  The system checks the DC current before the compressor starts. Malfunction Decision Conditions  The DC current before compressor start-up is out ...

SiUS041111 Troubleshooting Service Diagnosis 101 4.17 Position Sensor Abnormality Remote Controller Display H6 Method of Malfunction Detection A compressor start-up failure is detected by checking the compressor running condition through the position detection circuit. Malfunction Decision Condition...

Troubleshooting SiUS041111 106 Service Diagnosis 4.20 Electrical Box Temperature Rise Remote Controller Display L3 Method of Malfunction Detection An electrical box temperature rise is detected by checking the radiation fin thermistor with the compressor off. Malfunction Decision Conditions  With t...

Troubleshooting SiUS041111 108 Service Diagnosis 4.21 Radiation Fin Temperature Rise Remote Controller Display L4 Method of Malfunction Detection A radiation fin temperature rise is detected by checking the radiation fin thermistor with the compressor on. Malfunction Decision Conditions  If the rad...

Troubleshooting SiUS041111 110 Service Diagnosis 4.22 Output Overcurrent Detection Remote Controller Display L5 Method of Malfunction Detection An output overcurrent is detected by checking the current that flows in the inverter DC section. Malfunction Decision Conditions  A position signal error o...

Troubleshooting SiUS041111 112 Service Diagnosis 4.23 Refrigerant Shortage Remote Controller Display U0 Method of Malfunction Detection Refrigerant shortage detection I:Refrigerant shortage is detected by checking the input current value and the compressor running frequency. If the refrigerant is sh...

Check SiUS041111 116 Service Diagnosis 5. Check 5.1 Thermistor Resistance Check Check No.01 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 g...

SiUS041111 Check Service Diagnosis 117 5.2 Fan Motor Connector Output Check Check No.02 FTXN15/18/24KVJU1. Check the connection of connector.2. Check the motor power supply voltage output (pins 4 - 7).3. Check the motor control voltage (pins 4 - 3).4. Check the rotation command voltage (pins 4 - 2)....

Check SiUS041111 118 Service Diagnosis 5.3 Power Supply Waveforms Check Check No.11 Measure the power supply waveform between No. 1 and No. 2 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 wave...

SiUS041111 Check Service Diagnosis 119 5.5 Four-Way Valve Performance Check Check No.13 5.6 Inverter Unit Refrigerant System Check Check No.14 (R14673) N O YES YES N O * Fo u r- w ay v al v e coil Cooling / Dry : N o contin u ity Heating : Contin u ity T u rn off the po w er and t u rn it on again. ...

Check SiUS041111 120 Service Diagnosis 5.7 “Inverter Checker” Check Check No.15  Characteristics If an abnormal stop occurs due to compressor startup failure or overcurrent output when using inverter unit, it is difficult to judge whether it is caused by the compressor failure or other failure (con...

Check SiUS041111 122 Service Diagnosis 5.8 Rotation Pulse Check on the Outdoor Unit PCB Check No.16 09/12 class1. 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 i...

SiUS041111 Check Service Diagnosis 123 5.9 Installation Condition Check Check No.17 OK Check the allowable dimensions of the air suction and discharge area. Is the airflow blocked by obstacles or winds blowing in the opposite direction? (R14468) NG YES YES YES Is the discharged air short-circuited? ...

Check SiUS041111 124 Service Diagnosis 5.10 Discharge Pressure Check Check No.18 5.11 Outdoor Fan System Check Check No.19 DC motor Is the air filter or indoor / outdoor heat exchanger dirty? (R11718) Replace the compressor. Open the stop valve. Replace the pipe installed at the site. Clean the dirt...

SiUS041111 Check Service Diagnosis 125 5.12 Main Circuit Short Check Check No.20 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.  If the resistance is  or less tha...

Check SiUS041111 126 Service Diagnosis 15/18/24 class 5.13 Power Module Check Check No.22 Note: Check to make sure that the voltage between (+) and (–) of the diode bridge (DB1) is approx. 0 V before checking.  Disconnect the compressor harness connector from the outdoor unit PCB. To disengage the ...

SiUS041111 Removal Procedure 127 Part 7 Removal Procedure 1. Indoor Unit: 09/12 Class.......................................................................... 128 1.1 Removal of Air Filters ............................................................................... 128 1.2 Removal of Horizontal...

Indoor Unit: 09/12 Class SiUS041111 128 Removal Procedure 1. Indoor Unit: 09/12 Class 1.1 Removal of Air Filters Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Appearance features Warning Dangerous: Hi...

Indoor Unit: 09/12 Class SiUS041111 130 Removal Procedure 1.2 Removal of Horizontal Blade Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1 Open the horizontal blade. 2 Unfasten the center shaft while bend...

Indoor Unit: 09/12 Class SiUS041111 132 Removal Procedure 1.3 Removal of Front Panel Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1 Open the front panel over the position where it stops. 2 Release the r...

SiUS041111 Indoor Unit: 09/12 Class Removal Procedure 133 1.4 Removal of Front Grille Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1 Remove the 2 screws, which fix the front grille to the main body. 2 T...

Indoor Unit: 09/12 Class SiUS041111 134 Removal Procedure 1.5 Removal of Electrical Box / Vertical Blades Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Disconnect the connecting wires. Preparation  R...

SiUS041111 Indoor Unit: 09/12 Class Removal Procedure 139 1.6 Removal of Swing Motor / PCBs Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the shield plate (2). Preparation  Remove the electric...

SiUS041111 Indoor Unit: 09/12 Class Removal Procedure 143 1.7 Removal of Indoor Heat Exchanger Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Disconnect the refrigerant piping. Preparation  Remove the...

Indoor Unit: 09/12 Class SiUS041111 146 Removal Procedure 1.8 Removal of Fan Rotor / Fan Motor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the right side panel. Preparation  Remove the indoo...

SiUS041111 Indoor Unit: 09/12 Class Removal Procedure 149 1.9 Exchange of Piping Direction (Drain Hose) Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1 Remove the heat insulation fixing screw on the righ...

Indoor Unit: 15/18/24 Class SiUS041111 150 Removal Procedure 2. Indoor Unit: 15/18/24 Class 2.1 Removal of Air Filters / Front Panel Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points Warning Dangerous: High ...

SiUS041111 Indoor Unit: 15/18/24 Class Removal Procedure 155 2.3 Removal of Horizontal Blades / Vertical Blades Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the horizontal blades. 1 Open the h...

SiUS041111 Indoor Unit: 15/18/24 Class Removal Procedure 157 2.4 Removal of Electrical Box / PCBs / Swing Motors Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the electrical box. Preparation  ...

SiUS041111 Indoor Unit: 15/18/24 Class Removal Procedure 165 2.6 Removal of Fan Motor / Fan Rotor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the right side plate. 1 Remove the 2 screws.  Yo...

SiUS041111 Outdoor Unit: 09/12 Class Removal Procedure 167 3. Outdoor Unit: 09/12 Class Note: The illustrations are for heat pump models as representative. 3.1 Removal of Outer Panels Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling w...

SiUS041111 Outdoor Unit: 09/12 Class Removal Procedure 171 3.2 Removal of Outdoor Fan / Fan Motor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the outdoor fan. Preparation  Remove the panels ...

SiUS041111 Outdoor Unit: 09/12 Class Removal Procedure 173 3.3 Removal of Electrical Box / PCB Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the right side panel. Preparation  Remove the panel...

SiUS041111 Outdoor Unit: 09/12 Class Removal Procedure 185 3.4 Removal of Sound Blankets Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the partition plate. 1 Remove the 2 screws. 2 The partitio...

SiUS041111 Outdoor Unit: 09/12 Class Removal Procedure 187 3.5 Removal of Four-Way Valve Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the peripheries.  The cooling only model has no four-way ...

Outdoor Unit: 09/12 Class SiUS041111 190 Removal Procedure 3.6 Removal of Compressor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1 Remove the four-way valve, the terminal cover and disconnect the termi...

Outdoor Unit: 15/18/24 Class SiUS041111 198 Removal Procedure 4.3 Removal of Electrical Box Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1 Remove the 2 screws of the protection plate.  When reassemblin...

Outdoor Unit: 15/18/24 Class SiUS041111 206 Removal Procedure 4.4 Removal of PCBs Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1. Remove the main PCB. [S12]: for [HL4] [HN4] on filter PCB 1 Disconnect t...

Outdoor Unit: 15/18/24 Class SiUS041111 216 Removal Procedure 4.6 Removal of Electronic Expansion Valve Assembly Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1 Pull out the electronic expansion valve co...

SiUS041111 Outdoor Unit: 15/18/24 Class Removal Procedure 217 4.7 Removal of Four-Way Valve Removal of Four Way Valve Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points 1 Remove the screw and remove the four-...

SiUS041111 220 Trial Operation and Field Settings Part 8 Trial Operation and Field Settings 1. Pump Down Operation ............................................................................ 2212. Forced Cooling Operation ....................................................................... 2223....

SiUS041111 Pump Down Operation Trial Operation and Field Settings 221 1. Pump Down Operation Outline In order to protect the environment, be sure to conduct pump down operation when relocating or disposing the unit. Detail 1) Remove the valve caps from the liquid stop valve and the gas stop valve.2)...

Forced Cooling Operation SiUS041111 222 Trial Operation and Field Settings 2. Forced Cooling Operation Indoor Unit (09/12 class) Indoor Unit (15/18/24 class) Outdoor Unit (15/18/24 class only) Item Forced Cooling Conditions The forced cooling operation is allowed when both the following conditions a...

Field Settings SiUS041111 224 Trial Operation and Field Settings 4. Field Settings 4.1 Model Type Setting ARC452A19, 20  This remote controller is common to the heat pump model and cooling only model. Use the DIP switch on the remote controller to set the heat pump model or cooling only model.  Ma...

SiUS041111 Field Settings Trial Operation and Field Settings 225 4.3 When 2 Units are Installed in 1 Room 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 addresses.Both the indoor unit PCB and the wireless remote co...

SiUS041111 Field Settings Trial Operation and Field Settings 227 4.5 Jumper Settings For the location of the jumper, refer to the following pages.Indoor unit; page 13, 15Outdoor unit; page 17, 19 Jumper Function When connected (factory set) When cut JB (on indoor unit PCB) Fan speed setting when com...

Application of Silicon Grease to a Power Transistor and a Diode Bridge SiUS041111 228 Trial Operation and Field Settings 5. Application of Silicon Grease to a Power Transistor and a Diode Bridge Applicable Models All outdoor units using inverter type compressor for room air conditioner. When the pri...

SiUS041111 Appendix 229 Part 9 Appendix 1. Piping Diagrams ...................................................................................... 230 1.1 Indoor unit ................................................................................................ 230 1.2 Outdoor Unit ...................

Piping Diagrams SiUS041111 230 Appendix 1. Piping Diagrams 1.1 Indoor unit FTXN09/12KEVJU FTXN15/18/24KVJU INDOOR UNIT HEAT EXCHANGER 9/32CuT 3/16CuT 9/32CuT 9/32CuT 9/32CuT CROSS FLOW FAN FIELD PIPING(1/4CuT) M FAN MOTOR 3/8CuT FIELD PIPING(3/8CuT) REFRIGERANT FLOW COOLING HEATING THERMISTOR ON HEA...

1645 Wallace Drive, Suite 110 Carrollton, TX75006 [email protected] www.daikinac.com AMERICAS dddddfdf ISO 9001 is a plant certification system defined by the International Organization for Standardization (ISO) relating to quality assurance. ISO 9001 certification covers quality assurance aspects r...