Daikin SUPER MULTI NX CTXS07JVJU- Manuals

SiUS12-928_B 1 List of Functions Part 1 List of Functions 1. Functions..................................................................................................... 2

SiUS12-928_B Functions List of Functions 2 1. Functions Category Functions CT XS 0 7 JVJU CTXS 0 9 /12HVJU FT XS15/18HVJU Category Functions CT XS 0 7 JVJU CTXS 0 9 /12HVJU FT XS15/18HVJU Basic Function Inverter (with Inverter Power Control)   Health & Clean Air-Purifying Filter — — Operation ...

SiUS12-928_B 7 Specifications Part 2 Specifications 1. Indoor Unit................................................................................................... 82. Outdoor Unit .............................................................................................. 13

SiUS12-928_B Indoor Unit Specifications 8 1. Indoor Unit CTXS, FTXS Series 60 Hz, 208 - 230 V Model CTXS07JVJU Cooling Heating Rated Capacity 7 kBtu/h Class Front Panel Color White Airflow Rate H cfm (m³/min) 388 (11.0) 400 (11.3) M 335 (9.5) 357 (10.1) L 283 (8.0) 314 (8.9) Fan Type Cross Flow Fan ...

Outdoor Unit SiUS12-928_B 13 Specifications 2. Outdoor Unit 60 Hz, 208 - 230 V Note:  The data are based on the conditions shown in the table below. Model 2MXS18GVJU Cooling Heating Casing Color Ivory White Compressor Type Hermetically Sealed Swing Type Model 2YC45EXD Motor Output W 1,380 Refrigera...

SiUS12-928_B Printed Circuit Board Connector Wiring Diagram 16 Part 3 Printed Circuit Board Connector Wiring Diagram 1. Indoor Unit................................................................................................. 17 1.1 CTXS07JVJU, CTXS09/12HVJU, FTXS15/18HVJU...........................

SiUS12-928_B Indoor Unit Printed Circuit Board Connector Wiring Diagram 18 PCB Detail PCB (1): Control PCB PCB (2): Signal Receiver PCB PCB (3): Buzzer PCB PCB (4): Display PCB PCB (5): INTELLIGENT EYE Sensor PCB S1 V1 FU1 S6 S8 2P099167-1 JC JB JA LED A S21 S35 H1 S26 S28 H2 H3 FG S32 SW1 S29 2P099...

SiUS12-928_B Outdoor Unit Printed Circuit Board Connector Wiring Diagram 30 MID2 (Inverter PCB) SPM PCB Detail Main PCB Service Monitor PCB 1) S34, S72 Connector for main PCB 2) S70 Connector for outdoor fan motor 3) FU201 Fuse (3.15 A, 250 V) 4) W, V, U, N Connector for compressor 1) CN11, CN14 Con...

Outdoor Unit SiUS12-928_B 31 Printed Circuit Board Connector Wiring Diagram MID1 MID2 (Inverter PCB) SPM 3P080081-2 V3 HN HE FU1 HL S11 W V U N S34 S72 S70 3P080085-1 FU201 (3.15A) 3EB10032-4 CN14 CN11 L1 L2

SiUS12-928_B Function and Control 34 Part 4 Function and Control 1. Main Functions .......................................................................................... 35 1.1 Temperature Control .................................................................................. 35 1.2 Frequency...

Main Functions SiUS12-928_B 35 Function and Control 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  R...

SiUS12-928_B Main Functions Function and Control 36 Inverter Principle To regulate the capacity, a frequency control is needed. The inverter makes it possible to alter the rotation speed of the compressor. The following table explains the conversion principle: Drawing of Inverter The following drawi...

Main Functions SiUS12-928_B 37 Function and Control Frequency Limits The following functions regulate the minimum and maximum frequency: Forced Operation Refer to page 256 for detail. 1.3 Airflow Direction Control (CTXS/FTXS Series) Power-Airflow Dual Louvers The large louver sends a large volume of...

Main Functions SiUS12-928_B 39 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 temper...

SiUS12-928_B Main Functions Function and Control 40 Note: 1. During POWERFUL operation, the fan rotates at H tap + 50 ~ 90 rpm.2. The fan stops during defrost operation. COMFORT AIRFLOW Operation CTXS/FTXS-L Series  The fan speed is controlled automatically within the following steps. <Cooling&g...

Main Functions SiUS12-928_B 41 Function and Control 1.6 Automatic Operation Outline Automatic Cooling / Heating Function When the automatic operation is selected with the remote controller, the microcomputer automatically determines the operation mode as cooling or heating according to the room temp...

SiUS12-928_B Main Functions Function and Control 42 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 temperatu...

SiUS12-928_B Main Functions Function and Control 44 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, ...

SiUS12-928_B Main Functions Function and Control 46 1.10 HOME LEAVE Operation Outline FDXS-D Series HOME LEAVE operation is a function that allows you to record your favorite set temperature and airflow rate. You can start your favorite operation mode simply by pressing the [HOME LEAVE] button on th...

Main Functions SiUS12-928_B 47 Function and Control 1.11 INTELLIGENT EYE Operation (CTXS/FTXS Series) Outline This function detects the existence of humans in the room with a motion sensor (INTELLIGENT EYE) and reduces the capacity when there is nobody in the room in order to save electricity. Detai...

SiUS12-928_B Main Functions Function and Control 48 1.12 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 pre...

Function of Thermistor SiUS12-928_B 51 Function and Control 2. Function of Thermistor <2MXS18GVJU> <3MXS24JVJU> <4MXS32GVJU> SV D Four way valve Compressor Defrost solenoid valve EV A EV B Receiver (1) (2) (3) (4) A B (5) (R17358) Outdoor electronic expansion valve Four way valve C...

SiUS12-928_B Control Specification Function and Control 54 3. Control Specification 3.1 Mode Hierarchy Outline Air conditioner control has normal operation mode, forced operation mode, and power transistor test mode for installation and servicing. Detail Note:  Unless specified otherwise, a dry ope...

Control Specification SiUS12-928_B 55 Function and Control 3.2 Frequency Control Outline Frequency that corresponds to each room’s capacity is determined according to the difference between the target temperature and the temperature of each room. The function is explained as follows.1. How to determ...

Control Specification SiUS12-928_B 57 Function and Control 3.3 Controls at Mode Changing / Start-up 3.3.1 Preheating Operation Outline The inverter operation in open phase starts with the conditions of the outdoor temperature and the preheating command from the indoor unit. Detail ON Condition  Whe...

SiUS12-928_B Control Specification Function and Control 58 3.3.5 Compressor Protection Function When turning the compressor from OFF to ON, the upper limit of frequency is set as follows. (The function is not used when defrosting.) 3.4 Discharge Pipe Temperature Control Outline The discharge pipe te...

Control Specification SiUS12-928_B 59 Function and Control 3.5 Input Current Control Outline An input current is detected by the CT while the compressor is running, and the frequency upper limit is set from the input current.In case of heat pump models, this control which is the upper limit control ...

SiUS12-928_B Control Specification Function and Control 60 3.7 Heating Peak-cut Control Outline During heating operation, the indoor heat exchanger temperature determines the frequency upper limit to prevent abnormal high pressure. Detail  The operating frequency is judged with the indoor heat exch...

Control Specification SiUS12-928_B 61 Function and Control 3.8 Outdoor Fan Control 1. 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. 2. Fan OFF control during defrosting The outdoor fan is turned OF...

SiUS12-928_B Control Specification Function and Control 62 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 ...

Control Specification SiUS12-928_B 63 Function and Control 3.11 Low Hz High Pressure Limit Outline The system controls the upper limit of the frequency to prevent abnormal high pressure while the frequency is low. Control is carried out according to three zones. Detail Note: Dropping: The system sto...

Control Specification SiUS12-928_B 65 Function and Control 3.12.1 Fully Closing with Power on The outdoor electronic expansion valve is initialized when the power is turned on. The opening position is set and the pressure equalization is developed. 3.12.2 Pressure Equalizing Control When the compres...

SiUS12-928_B Control Specification Function and Control 66 3.12.8 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 condensing temperature. If the discharge pipe therm...

Control Specification SiUS12-928_B 67 Function and Control 3.12.11Target Discharge Pipe Temperature Control The target discharge pipe temperature is obtained from the indoor and outdoor heat exchanger temperature, and the outdoor electronic expansion valve opening is adjusted so that the actual disc...

SiUS12-928_B Control Specification Function and Control 68 3.13 Malfunctions 3.13.1 Sensor Malfunction Detection Sensor malfunction may occur either in the thermistor or current transformer (CT) system. Relating to Thermistor Malfunction 1. Outdoor heat exchanger thermistor2. Discharge pipe thermist...

Control Specification SiUS12-928_B 69 Function and Control 3.13.4 Anti-icing Function If the indoor heat exchanger’s temperature drops below the specified temperature during cooling, the outdoor electonic expansion valve will open and the fully-closed operation is carried out in the room. After this...

SiUS12-928_B Operation Manual 70 Part 5 Operation Manual 1. System Configuration ................................................................................ 712. CTXS-J, CTXS-H, FTXS-H Series ............................................................ 72 2.1 Remote Controller ....................

System Configuration SiUS12-928_B 71 Operation Manual 1. System Configuration After installation and trial 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 ...

SiUS12-928_B CTXS-J, CTXS-H, FTXS-H Series Operation Manual 72 2. CTXS-J, CTXS-H, FTXS-H Series 2.1 Remote Controller Name of Parts Remote Controller: ARC452A9 Signal transmitter FAN setting button POWERFUL button • To use the remote controller, aim the transmitter at the indoor unit. If there is an...

CTXS-J, CTXS-H, FTXS-H Series SiUS12-928_B 73 Operation Manual Page 21 Page 14,15 Page 18 Page 12 Page 10 Page 20,21 Page 20,21 Page 20 Page 17 • Changes the ON/OFF TIMER settings. • Cancels the timer setting. TIMER CANCEL button • OUTDOOR UNIT QUIET operation. OFF TIMER button QUIET button SELECT b...

SiUS12-928_B CTXS-J, CTXS-H, FTXS-H Series Operation Manual 74 2.2 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 mod...

CTXS-J, CTXS-H, FTXS-H Series SiUS12-928_B 75 Operation Manual  To change the airflow rate setting Press . DRY operation AUTO or COOL or HEAT or FAN operation The airflow rate setting is not variable. 5 levels of airflow rate setting from “ ” to “ ” plus “ ” and “ ” are available. • Indoor unit qui...

SiUS12-928_B CTXS-J, CTXS-H, FTXS-H Series Operation Manual 76 2.3 Adjusting the Airflow Direction Adjusting the Airflow Direction 1. Press . You can adjust the airflow direction to increase your comfort. Adjusting the upper and lower airflow direction  To adjust the louvers (horizontal blades) 2. ...

CTXS-J, CTXS-H, FTXS-H Series SiUS12-928_B 77 Operation Manual  To start 3-D airflow  To cancel 3-D airflow NOTE 1. 3. Press the and the :the “ ” and “ ” display will light up and the louvers and fins will move in turn. 2. 4. Press either the or the . • When is selected, the louvers swinging range...

SiUS12-928_B CTXS-J, CTXS-H, FTXS-H Series Operation Manual 78 2.4 INTELLIGENT EYE Operation INTELLIGENT EYE Operation “INTELLIGENT EYE” is the infrared sensor which detects the human movement.  To start INTELLIGENT EYE operation  To cancel INTELLIGENT EYE operation 1. Press . 2. Press again. • “ ...

CTXS-J, CTXS-H, FTXS-H Series SiUS12-928_B 79 Operation Manual “INTELLIGENT EYE” is useful for energy saving  Energy saving operation  Notes on INTELLIGENT EYE operation • Change the temperature –3.6 ° F (–2 ° C) in HEAT / +3.6 ° F (+2 ° C) in COOL / +1.8 ° F (+1 ° C) in DRY operation from set tem...

SiUS12-928_B CTXS-J, CTXS-H, FTXS-H Series Operation Manual 80 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 Press during operation.  To cancel POWERF...

CTXS-J, CTXS-H, FTXS-H Series SiUS12-928_B 81 Operation Manual 2.6 OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET operation lowers the sound level of the outdoor unit by changing the frequency and fan speed on the outdoor unit. This function is convenient during night. ...

SiUS12-928_B CTXS-J, CTXS-H, FTXS-H Series Operation Manual 82 2.7 HOME LEAVE Operation HOME LEAVE Operation HOME LEAVE operation is a function which allows you to record your preferred temperature and airflow rate settings.  To start HOME LEAVE operation  To cancel HOME LEAVE operation Before usi...

CTXS-J, CTXS-H, FTXS-H Series SiUS12-928_B 83 Operation Manual  What ’ s the HOME LEAVE operation? Is there a set temperature and airflow rate which is most comfortable, a set temperature and airflow rate which you use the most?HOME LEAVE operation is a function that allows you to record your favor...

SiUS12-928_B CTXS-J, CTXS-H, FTXS-H Series Operation Manual 84 2.8 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  T...

CTXS-J, CTXS-H, FTXS-H Series SiUS12-928_B 85 Operation Manual  To use ON TIMER operation • Check that the clock is correct. If not, set the clock to the present time. 1. Press . “ ” is displayed. “ ” blinks. 2. Press until the time setting reaches the point you like. • Each pressing of either butt...

SiUS12-928_B CTXS-J, CTXS-H, FTXS-H Series Operation Manual 86 2.9 Note for Multi System 1. With the priority room setting present but inactive or not present. When more than one indoor unit is operating, priority is given to the first unit that was turned on.In this case, set the units that are tur...

CTXS-J, CTXS-H, FTXS-H Series SiUS12-928_B 87 Operation Manual  OUTDOOR UNIT QUIET operation  Priority room setting  COOL/HEAT mode lock (Available only for heat pump models) 1. With the priority room setting present but inactive or not present. When using the OUTDOOR UNIT QUIET operation feature...

SiUS12-928_B CTXS-L, FTXS-L Series Operation Manual 88 3. CTXS-L, FTXS-L Series 3.1 Remote Controller 7 Names of Parts Remote Controller Signal transmitter Receiver Display (LCD) Front cover <ARC452A21> • To use the remote controller, aim the transmitter at the indoor unit. If there is anythin...

SiUS12-928_B CTXS-L, FTXS-L Series Operation Manual 90 3.2 AUTO · DRY · COOL · HEAT · FAN Operation 11 Display NOTE MODE COOL 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 ...

CTXS-L, FTXS-L Series SiUS12-928_B 91 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 HEAT operation AUTO operation DRY or FAN operation 64-90˚F (18-32˚C) 50-86˚F (10-30˚C)...

SiUS12-928_B CTXS-L, FTXS-L Series Operation Manual 92 3.3 Adjusting the Airflow Direction and Rate 13 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 Press . • “ ” is displayed on the LCD...

SiUS12-928_B CTXS-L, FTXS-L Series Operation Manual 94 FTXS15/18LVJU  To adjust the airflow rate setting Press . • Each pressing of advances the airflow rate setting in sequence. Auto Indoor unit quiet Low Middle low Middle Middle high High NOTE  Notes on the angles of the louvers • The louvers sw...

CTXS-L, FTXS-L Series SiUS12-928_B 95 Operation Manual 3.4 COMFORT AIRFLOW / INTELLIGENT EYE Operation 15 [Example] n INTELLIGENT EYE operation is useful for energy saving COMFORT AIRFLOW / INTELLIGENT EYE Operation  COMFORT AIRFLOW operation The flow of air will be in the upward direction while in...

SiUS12-928_B CTXS-L, FTXS-L Series Operation Manual 96 16 Display NOTE 90˚ 55˚ 23ft (7m) 55˚ 23ft (7m) Page 20 CAUTION  To start operation Press and select the desired mode. • Each time the is pressed a different setting option is displayed on the LCD.• The INTELLIGENT EYE lamp lights green. • By s...

CTXS-L, FTXS-L Series SiUS12-928_B 97 Operation Manual 3.5 POWERFUL Operation 17 [Example] NOTE 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. • POWERF...

SiUS12-928_B CTXS-L, FTXS-L Series Operation Manual 98 3.6 OUTDOOR UNIT QUIET Operation 18 NOTE Page 28 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...

CTXS-L, FTXS-L Series SiUS12-928_B 99 Operation Manual 3.7 ECONO Operation 19 NOTE 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 b...

SiUS12-928_B CTXS-L, FTXS-L Series Operation Manual 100 3.8 OFF TIMER Operation 20 Display NOTE 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 TI...

CTXS-L, FTXS-L Series SiUS12-928_B 101 Operation Manual 3.9 ON TIMER Operation 21 Display NOTE ON TIMER Operation • Check that the clock is correct. If not, set the clock to the present time.  To use ON TIMER operation 1. Press . “ ” is displayed on the LCD. “ ” blinks. • “ ” and day of the week ar...

SiUS12-928_B CTXS-L, FTXS-L Series Operation Manual 102 3.10 WEEKLY TIMER Operation 22 Page 23 6:00 8:30 17:30 22:00 77˚F (25˚C) 81˚F (27˚C) ON ON OFF OFF [T Page 25 6:00 8:30 17:30 22:00 77˚F (25˚C) 81˚F (27˚C) No timer settings Page 23 8:00 10:00 19:00 21:00 81˚F (27˚C) 81˚F (27˚C) 77˚F (25˚C) ON ...

CTXS-L, FTXS-L Series SiUS12-928_B 103 Operation Manual 23 Setting mode 6:00 8:30 17:30 22:00 77˚F (25˚C) 81˚F (27˚C) [Monday] Setting Displays . WEEKLY TIMER Operation  To use WEEKLY TIMER operation • Make sure the day of the week and time are set. If not, set the day of the week and time. Program...

SiUS12-928_B CTXS-L, FTXS-L Series Operation Manual 104 24 NOTE Display Copy mode Page 25 6. Press to select the desired time. • The time can be set between 0:00 and 23:50 in 10 minute intervals.• To return to the ON/OFF TIMER mode setting, press . • Go to STEP 9 when setting the OFF TIMER. 7. Press...

CTXS-L, FTXS-L Series SiUS12-928_B 105 Operation Manual COPY 25 Copy mode 6:00 8:30 17:30 22:00 77˚F (25˚C) 81˚F (27˚C) 6:00 8:30 17:30 22:00 77˚F (25˚C) 81˚F (27˚C) COPY [Monday] ON OFF ON OFF Setting Displays NOTE Setting mode Page 23 WEEKLY TIMER Operation • A reservation made once can be copied ...

SiUS12-928_B CTXS-L, FTXS-L Series Operation Manual 106 26  Confirming a reservation • The reservation can be confirmed. Setting Displays Normal display Confirmation display 1. Press . • The day of the week and the reservation number of current day will be displayed. • Pressing displays the reserva...

CTXS-L, FTXS-L Series SiUS12-928_B 107 Operation Manual 27 WEEKLY TIMER Operation  To delete reservations The individual reservation 1. Press . • The day of the week and the reservation number will be displayed. 3. Press . • “ ” and “ ” or “ ” blink. 4. Press and select “ blank ”. • Pressing change...

SiUS12-928_B CTXS-L, FTXS-L Series Operation Manual 108 3.11 Note for Multi System 28 Note for Multi System NOTE  Notes on operation mode for multi system CAUTION With the priority room setting active. Refer to “ Priority room setting ” on the next page.  NIGHT QUIET mode (Available only for COOL ...

CTXS-L, FTXS-L Series SiUS12-928_B 109 Operation Manual 29 Note for Multi System  COOL / HEAT mode lock  Priority room setting Operation mode priority [Example] Priority when POWERFUL operation is used [Example] Priority when using OUTDOOR UNIT QUIET operation [Example] The priority room setting r...

SiUS12-928_B CTXS-L, FTXS-L Series Operation Manual 110 3.12 Quick Reference Quick Reference C: 3P297290-1 C: 3P297290-2

SiUS12-928_B FDXS-D Series Operation Manual 112 4.2 AUTO · DRY · COOL · HEAT · FAN Operation 10 AUTO · DRY · COOL · HEAT · FAN Operation  To start operation : AUTO : DRY : COOL : HEAT : FAN 2. Press “ON/OFF button”. • The OPERATION lamp lights up. DRY or FAN mode AUTO or COOL or HEAT mode The tempe...

FDXS-D Series SiUS12-928_B 113 Operation Manual 11  To change the air flow rate setting 5. Press “FAN setting button”. NOTE DRY mode AUTO or COOL or HEAT or FAN mode The air flow rate setting is not variable. Five levels of air flow rate setting from “ ” to “ ” plus “ ” “ ” are available. • Indoor ...

SiUS12-928_B FDXS-D Series Operation Manual 114 4.3 POWERFUL Operation 12 POWERFUL Operation To start POWERFUL operation To cancel POWERFUL operation NOTE 1, 2 PO W ERFUL operation qu ickly maximizes the cooling (heating) effect in any operation mode. Yo u can get the maxim u m capacity. 1. Press “P...

FDXS-D Series SiUS12-928_B 115 Operation Manual 4.4 OUTDOOR UNIT QUIET Operation 13 OUTDOOR UNIT QUIET Operation NOTE 1, 2 OUTDOOR UNIT QUIET operation lowers the sound level of the outdoor unit by changing the frequency and fan speed on the outdoor unit. This function is convenient during night.  ...

SiUS12-928_B FDXS-D Series Operation Manual 116 4.5 HOME LEAVE Operation 14 HOME LEAVE Operation To start HOME LEAVE operation To cancel HOME LEAVE operation Before usin g HOME LEAVE operation. 1, 2 Initial setting Selecta b le range Cooling Heating HOME LEA V E operation is a f u nction w hich allo...

FDXS-D Series SiUS12-928_B 117 Operation Manual 15 NOTE • Every day before you leave the house... • Before bed...  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 operatio...

SiUS12-928_B FDXS-D Series Operation Manual 118 4.6 TIMER Operation 16 TIMER Operation To use OFF TIMER operation 1. Press “OFF TIMER button”. is displayed. b links. NOTE 4 2 1, 3 Timer f u nctions are u sef u l for a u tomatically s w itching the air conditioner on or off at night or in the morning...

FDXS-D Series SiUS12-928_B 119 Operation Manual  To use ON TIMER operation 1. Press “ON TIMER button”. is displayed. blinks. • Check that the clock is correct. If not, set the clock to the present time. 2. Press “TIMER Setting button” until the time setting reaches the point you like. • Every press...

SiUS12-928_B CDXS-L, FDXS-L Series Operation Manual 120 5. CDXS-L, FDXS-L Series 5.1 Remote Controller 7 Names of Parts Remote Controller Signal transmitter Receiver FAN setting button • Selects the airflow rate setting. POWERFUL button • POWERFUL operation. Display (LCD) • Changes the temperature s...

CDXS-L, FDXS-L Series SiUS12-928_B 123 Operation Manual 12  To change the temperature setting Press or . COOL operation HEAT operation AUTO operation DRY or FAN operation  Operating conditions MODE Operating conditions If operation is continued out of this range COOL HEAT DRY • Operation outside t...

SiUS12-928_B CDXS-L, FDXS-L Series Operation Manual 124 5.3 Adjusting the Airflow Rate 13 Adjusting the Airflow Rate NOTE  To adjust the airflow rate setting Press . • Each pressing of advances the airflow rate setting in sequence. Auto Indoor unit quiet Low Middle low Middle Middle high High • Whe...

SiUS12-928_B 133 Service Diagnosis Part 6 Service Diagnosis 1. Troubleshooting with LED ....................................................................... 135 1.1 Indoor Unit ................................................................................................ 135 1.2 Outdoor Unit .....

Troubleshooting with LED SiUS12-928_B 135 Service Diagnosis 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...

Problem Symptoms and Measures SiUS12-928_B 137 Service Diagnosis 2. Problem Symptoms and Measures Problem Symptom Check Item Details of Measure Reference Page None of the units operates. Check the power supply. Check if the rated voltage is supplied. — Check the types of the indoor units. Check if t...

SiUS12-928_B Service Check Function Service Diagnosis 138 3. Service Check Function 3.1 ARC452 Series Remote Controller 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 lo...

Service Check Function SiUS12-928_B 139 Service Diagnosis Check Method 2 1. Press the 3 buttons (TEMP  , TEMP  , MODE) at the same time to enter the diagnosis mode. The left-side number blinks. 2. Press the [TEMP]  or  button and change the number until you hear the two consecutive beeps or the ...

Service Check Function SiUS12-928_B 141 Service Diagnosis 3.2 ARC433 Series Remote Controller 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...

SiUS12-928_B Code Indication on Remote Controller Service Diagnosis 144 4. Code Indication on Remote Controller 4.1 Indoor Unit Error Codes Description Reference Page 00 Normal condition — A1 Indoor unit PCB abnormality 146 A5 Freeze-up protection control or heating peak-cut control 148 A6 Fan motor...

SiUS12-928_B Troubleshooting for Indoor Unit Service Diagnosis 146 5. Troubleshooting for Indoor Unit 5.1 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 ...

Troubleshooting for Indoor Unit SiUS12-928_B 147 Service Diagnosis Troubleshooting Note: Check the following connector. Check the combination of the indoor and outdoor unit. OK? Check the connection of connectors (See Note.). Correct the connection. OK? Check the power supply voltage. Start operatio...

SiUS12-928_B Troubleshooting for Indoor Unit Service Diagnosis 148 5.2 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 ac...

SiUS12-928_B Troubleshooting for Indoor Unit Service Diagnosis 150 5.3 Fan Motor or Related Abnormality 5.3.1 DC Motor (CTXS/FTXS Series) 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 f...

Troubleshooting for Indoor Unit SiUS12-928_B 153 Service Diagnosis 5.4 Thermistor or Related Abnormality (Indoor Unit) Remote Controller Display C4 , C9 Method of Malfunction Detection The temperatures detected by the thermistors are used to determine thermistor errors. Malfunction Decision Conditio...

SiUS12-928_B Troubleshooting for Outdoor Unit Service Diagnosis 156 6. Troubleshooting for Outdoor Unit 6.1 Refrigerant Shortage Remote Controller Display U0 Outdoor Unit LED Display A 5 1 3 2 3 3 4 4 4 Method of Malfunction Detection Refrigerant shortage detection I : Refrigerant shortage is detect...

Troubleshooting for Outdoor Unit SiUS12-928_B 159 Service Diagnosis 6.2 Low-voltage Detection or Over-voltage Detection Remote Controller Display U2 Outdoor Unit LED Display A 5 1 4 2 3 3 3 4 4 Method of Malfunction Detection  Indoor Unit The zero-cross detection of the power supply is evaluated by...

Troubleshooting for Outdoor Unit SiUS12-928_B 167 Service Diagnosis 6.8 Compressor Lock Remote Controller Display E6 Outdoor Unit LED Display A 5 1 3 2 4 3 4 4 3 Method of Malfunction Detection A compressor lock is detected by checking the compressor running condition through the position detection ...

SiUS12-928_B Troubleshooting for Outdoor Unit Service Diagnosis 168 6.9 DC Fan Lock Remote Controller Display E7 Outdoor Unit LED Display A 5 1 4 2 4 3 4 4 4 Method of Malfunction Detection An error is determined with the high-voltage fan motor rotation speed detected by the Hall IC. Malfunction Dec...

Troubleshooting for Outdoor Unit SiUS12-928_B 169 Service Diagnosis 6.10 Input Overcurrent Detection Remote Controller Display E8 Outdoor Unit LED Display A 5 1 3 2 4 3 3 4 4 Method of Malfunction Detection Detected by checking the input current value Malfunction Decision Conditions  The input curr...

SiUS12-928_B Troubleshooting for Outdoor Unit Service Diagnosis 170 6.11 Four Way Valve Abnormality (18 Class Only) Remote Controller Display EA Outdoor Unit LED Display A j 1 i 2 h 3 h 4 h Method of Malfunction Detection The liquid pipe thermistor and the outdoor heat exchanger thermistor are check...

SiUS12-928_B Troubleshooting for Outdoor Unit Service Diagnosis 172 6.12 Discharge Pipe Temperature Control Remote Controller Display F3 Outdoor Unit LED Display A j 1 i 2 h 3 i 4 h Method of Malfunction Detection Detected by the discharge pipe thermistor Malfunction Decision Conditions  If the tem...

Troubleshooting for Outdoor Unit SiUS12-928_B 173 Service Diagnosis 6.13 High Pressure Control in Cooling Remote Controller Display F6 Outdoor Unit LED Display A j 1 i 2 h 3 i 4 i Method of Malfunction Detection High pressure control (operation halt, frequency drop, etc.) is activated in cooling ope...

SiUS12-928_B Troubleshooting for Outdoor Unit Service Diagnosis 176 6.15 Position Sensor Abnormality Remote Controller Display H6 Outdoor Unit LED Display A j 1 i 2 i 3 h 4 h Method of Malfunction Detection A compressor start-up failure is detected by checking the compressor running condition throug...

Troubleshooting for Outdoor Unit SiUS12-928_B 179 Service Diagnosis 6.16 CT or Related Abnormality Remote Controller Display H8 Outdoor Unit LED Display A j 1 i 2 i 3 h 4 h Method of Malfunction Detection A CT or related error is detected by checking the compressor running frequency and CT-detected ...

SiUS12-928_B Troubleshooting for Outdoor Unit Service Diagnosis 182 Troubleshooting Check No.01 Refer to P.191 H9 : Outdoor temperature thermistor J3 : Discharge pipe thermistor J6 : Outdoor heat exchanger thermistor J8 : Liquid pipe thermistor J9 : Gas pipe thermistor P4 : Radiation fin thermistor ...

Troubleshooting for Outdoor Unit SiUS12-928_B 183 Service Diagnosis 6.18 Electrical Box Temperature Rise Remote Controller Display L3 Outdoor Unit LED Display A j 1 i 2 i 3 h 4 i Method of Malfunction Detection An electrical box temperature rise is detected by checking the radiation fin thermistor w...

SiUS12-928_B Troubleshooting for Outdoor Unit Service Diagnosis 186 6.19 Radiation Fin Temperature Rise Remote Controller Display L4 Outdoor Unit LED Display A j 1 h 2 h 3 h 4 i Method of Malfunction Detection A radiation fin temperature rise is detected by checking the radiation fin temperature wit...

Troubleshooting for Outdoor Unit SiUS12-928_B 189 Service Diagnosis 6.20 Output Overcurrent Detection Remote Controller Display L5 Outdoor Unit LED Display A j 1 h 2 h 3 i 4 h Method of Malfunction Detection An output overcurrent is detected by checking the current that flows in the inverter DC sect...

Check SiUS12-928_B 191 Service Diagnosis 7. Check 7.1 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...

SiUS12-928_B Check Service Diagnosis 192 7.2 Fan Motor Connector Check Check No.02 CTXS/FTXS Series 1. Check the connection of connector.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. Check ...

Check SiUS12-928_B 193 Service Diagnosis 7.4 Power Supply Waveform 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 wav...

SiUS12-928_B Check Service Diagnosis 194 7.5 Outdoor Electronic Expansion Valve Check Check No.12 Conduct the followings to check the outdoor electronic expansion valve (EV).1. Check to see if the EV connector is correctly inserted in the PCB. Match the EV unit number and the connector number. 2. Tu...

Check SiUS12-928_B 195 Service Diagnosis 7.6 Four Way Valve Performance Check Check No.13 7.7 Inverter Unit Refrigerant System Check Check No.14 (R11717) (R11725) N O YES YES N O (Fig. 1) V oltage at S 8 0 20 8 /230 V AC O N Compressor Time T u rn off the po w er and t u rn it on again. Disconnect t...

SiUS12-928_B Check Service Diagnosis 196 7.8 “Inverter Checker” Check Check No.15  Characteristics If abnormal stop occurs due to compressor startup failure or overcurrent output when using an inverter unit, it is difficult to judge whether the stop is caused by the compressor failure or some other...

Check SiUS12-928_B 197 Service Diagnosis  Diagnose method (Diagnose according to 6 LEDs lighting status.) (1) If all the LEDs are lit uniformly, the compressor is defective.  Replace the compressor. (2) If the LEDs are not lit uniformly, check the power module.  Refer to Check No.22 . (3) If NG i...

SiUS12-928_B Check Service Diagnosis 198 7.10 Installation Condition Check Check No.17 7.11 Discharge Pressure Check Check No.18 Installation condition check OK Check the allowable dimensions of the air suction and discharge area. Is the airflow blocked by obstacles or winds blowing in the opposite ...

Check SiUS12-928_B 199 Service Diagnosis 7.12 Outdoor Fan System Check Check No.19 7.13 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 re...

SiUS12-928_B Check Service Diagnosis 200 7.14 Capacitor Voltage Check Check No.21 Before this check, be sure to check the main circuit for short circuit.With the circuit breaker still on, measure the voltage according to the drawing of the model in question. Be careful never to touch any live parts....

Check SiUS12-928_B 201 Service Diagnosis 7.15 Power Module Check Check No.22 Note: Check to make sure that the voltage between (+) and (–) of the power module (PM1) is approx. 0 V before checking.  Disconnect the compressor harness connector from the outdoor unit PCB. To disengage the connector, pr...

SiUS12-928_B Removal Procedure 202 Part 7 Removal Procedure 1. Outdoor Unit: 2MXS18GVJU .................................................................. 203 1.1 Removal of Outer Panels ......................................................................... 203 1.2 Removal of Electrical Box ........

Outdoor Unit: 2MXS18GVJU SiUS12-928_B 203 Removal Procedure 1. Outdoor Unit: 2MXS18GVJU 1.1 Removal of Outer Panels 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 2 Remove the 4 scre...

SiUS12-928_B Outdoor Unit: 2MXS18GVJU Removal Procedure 204 1.2 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. Disconnect the connecting wires.  The US model has a protection...

Outdoor Unit: 2MXS18GVJU SiUS12-928_B 209 Removal Procedure 1.3 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 screw of the main PCB, and unfasten the 2 hooks.  When reassemb...

SiUS12-928_B Outdoor Unit: 2MXS18GVJU Removal Procedure 212 1.4 Removal of 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 nut and remove the outdoor fan. Preparation Disconnect the ...

Outdoor Unit: 2MXS18GVJU SiUS12-928_B 213 Removal Procedure 1.5 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 5 screws of the right side panel. 2 Release the clamp ...

Outdoor Unit: 2MXS18GVJU SiUS12-928_B 215 Removal Procedure 1.6 Removal of Coils / Thermistors 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-way valve coil. 2 Remov...

Outdoor Unit: 2MXS18GVJU SiUS12-928_B 217 Removal Procedure 1.7 Removal of Four-Way Valve / Defrost Solenoid 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 way...

Outdoor Unit: 2MXS18GVJU SiUS12-928_B 219 Removal Procedure 1.8 Removal of Distributor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Step Procedure Points  Before working, make sure that the refrigerant gas is empty in the c...

SiUS12-928_B Outdoor Unit: 2MXS18GVJU Removal Procedure 220 1.9 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 terminal cover. 2 Disconnect the compressor lead wires. 3 ...

SiUS12-928_B Trial Operation and Field Settings 254 Part 8 Trial Operation and Field Settings 1. Pump Down Operation ............................................................................ 2552. Forced Operation ......................................................................................

Pump Down Operation SiUS12-928_B 255 Trial Operation and Field Settings 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....

SiUS12-928_B Forced Operation Trial Operation and Field Settings 256 2. Forced Operation Outline Forced operation mode includes forced cooling and forced heating. Operation mode can be selected by the operation mode switch (SW2) on the outdoor unit. Press the forced operation [ON/OFF] switch (SW1) o...

Wiring Error Check Function SiUS12-928_B 257 Trial Operation and Field Settings 3. Wiring Error Check Function Outline The convenient wiring error check function is designed for the microcomputer to correct wiring errors itself.If local wiring is unclear in the case of buried piping, for example, ju...

SiUS12-928_B Wiring Error Check Function Trial Operation and Field Settings 258 Basic Knowledge  Refrigerant flows from Port A and on. The temperatures of the indoor heat exchanger thermistors are detected one by one to check up the matching between the piping and wiring.  With this function on, f...

Trial Operation SiUS12-928_B 259 Trial Operation and Field Settings 4. Trial Operation Outline 1. Measure the power supply voltage and make sure that it falls in the specified range.2. Trial operation should be carried out in either cooling or heating operation.3. Carry out the trial operation in ac...

Field Settings SiUS12-928_B 261 Trial Operation and Field Settings 5. Field Settings 5.1 Outdoor Unit 5.1.1 Priority Room Setting Outdoor electronic expansion valves are controlled to provide more capacity to the prioritized room.  Setting methodTurn off the circuit breaker before changing the sett...

Field Settings SiUS12-928_B 265 Trial Operation and Field Settings 5.2.3 When 2 Units are Installed in 1 Room Outline When 2 indoor units are installed in 1 room, 1 of the 2 indoor units and the corresponding wireless remote controller can be set for different address.Both the indoor unit PCB and th...

Application of Silicon Grease to a Power Transistor and a Diode Bridge SiUS12-928_B 267 Trial Operation and Field Settings 6. 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 p...

SiUS12-928_B Appendix 268 Part 9 Appendix 1. Piping Diagrams ...................................................................................... 269 1.1 Indoor Unit ................................................................................................ 269 1.2 Outdoor Unit .................

Piping Diagrams SiUS12-928_B 269 Appendix 1. Piping Diagrams 1.1 Indoor Unit CTXS07JVJU, CTXS09/12HVJU FTXS15/18HVJU CTXS07LVJU, FTXS09/12LVJU FTXS15/18LVJU INDOOR UNIT (5/16CuT) HEAT EXCHANGER CROSS FLOW FAN FIELD PIPING(1/4CuT) M FAN MOTOR FIELD PIPING (3/8CuT) (1/2CuT) REFRIGERANT FLOW COOLINGHEA...

Wiring Diagrams SiUS12-928_B 273 Appendix 2. Wiring Diagrams 2.1 Indoor Unit CTXS07JVJU, CTXS09/12HVJU FTXS15/18HVJU PCB4 PCB3 PCB5 LED1 H1P R1T t ° S37 S3 8 LED2 H2P LED3 H3P PCB2 S27 S36 S1 W S26 S35 S21 S29 S2 8 PCB1 R2T S32 t ° ~ RECTIFIER 1 RED M1S M S6 ORG YL W ~ P N K 5 BLU 1 BR N RED M2S S 8...