SiUS091133 Service Manual Inverter Pair FTXS-L Series FDXS-L Series [Applied Models] Inverter Pair : Cooling Only Inverter Pair : Heat Pump
SiUS091133 Inverter Pair FTXS-L Series FDXS-L Series Cooling Only Indoor Unit FTXS30LVJU FTXS36LVJU Outdoor Unit RKS30LVJU RKS36LVJU Heat Pump Indoor Unit FTXS09LVJU FTXS12LVJU FTXS15LVJU FTXS18LVJU FTXS24LVJU FTXS30LVJU FTXS36LVJU FDXS09LVJU FDXS12LVJU Outdoor Unit RXS09LVJU RXS12LVJU RXS15LVJU RXS18LVJU RXS24LVJU RXS30LVJU RXS36LVJU Table of Contents i
SiUS091133 1. Safety Considerations .................................................................................. i 1.1 Safety Considerations for Repair .................................................................. i 1.2 Safety Considerations for Users....................................................................ii Part 1 List of Functions ................................................................... 1 1. Functions......................................................................
SiUS091133 1.12 Other Functions.......................................................................................... 40 2. Function of Thermistor ..............................................................................41 3. Control Specification .................................................................................42 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 Mode Hierarchy ..........................................................................................
SiUS091133 2. Problem Symptoms and Measures ...........................................................90 3. Service Check Function ............................................................................91 4. Troubleshooting ........................................................................................94 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.10 4.11 4.12 4.13 4.14 4.15 4.16 4.17 4.18 4.19 4.20 4.21 4.22 4.23 4.24 4.25 4.26 Error Codes and Description ........................................
SiUS091133 Part 7 Removal Procedure ........................................................... 155 1. Indoor Unit: FTXS09/12LVJU..................................................................157 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 Removal of Air Filters ............................................................................... 157 Removal of Front Panel............................................................................ 159 Removal of Front Grille .........................................
SiUS091133 5.7 Removal of Electronic Expansion Valve................................................... 321 5.8 Removal of Compressor........................................................................... 323 6. Outdoor Unit: RXS24LVJU......................................................................326 6.1 6.2 6.3 6.4 6.5 6.6 6.7 Removal of Outer Panels ......................................................................... 326 Removal of Electrical Box ........................................
SiUS091133 Table of Contents vii
Safety Considerations SiUS091133 1. Safety Considerations Read these SAFETY CONSIDERATIONS carefully before performing any repair work. Comply with these safety symbols without fail.Meanings of DANGER, WARNING, CAUTION, and NOTE Symbols: DANGER .............. Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. WARNING ............ Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. CAUTION ......
SiUS091133 Safety Considerations • 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 by splashing water on it. Washing the unit with water may cause an electrical shock. • Ground the unit when repairing equipment in a humid or wet place to avoid electrical shocks.
SiUS091133 Part 1 List of Functions 1. Functions.....................................................................................................2 1.1 FTXS Series ................................................................................................. 2 1.2 FDXS Series.................................................................................................
SiUS091133 Functions 1. Functions Compressor Comfortable Airflow Comfort Control Operation Operation Limit for Cooling (°FDB) 14 ~ 114.8 14 ~ 114.8 Operation Limit for Heating (°FWB) 5~ 64.4 5~ 64.4 Inverter (with Inverter Power Control) FTXS24LVJU RXS24LVJU Basic Function Functions FTXS09/12/15/18LVJU RXS09/12/15/18LVJU Category FTXS24LVJU RXS24LVJU FTXS Series FTXS09/12/15/18LVJU RXS09/12/15/18LVJU 1.
Compressor Comfortable Airflow Comfort Control Operation Inverter (with Inverter Power Control) Operation Limit for Cooling (°FDB) 14 ~ 14 ~ 114.8 114.8 Operation Limit for Heating (°FWB) — 5~ 64.
SiUS091133 Category Basic Function Compressor Comfortable Airflow Comfort Control Operation Lifestyle Convenience Functions Inverter (with Inverter Power Control) Operation Limit for Cooling (°FDB) 14 ~ 114.8 Operation Limit for Heating (°FWB) 5~ 64.4 PAM Control Oval Scroll Compressor — Category Health & Clean Functions FDXS09/12LVJU RXS09/12LVJU FDXS Series FDXS09/12LVJU RXS09/12LVJU 1.
SiUS091133 Part 2 Specifications 1. Specifications ..............................................................................................6 1.1 FTXS Series ................................................................................................. 6 1.2 FDXS Series...............................................................................................
SiUS091133 Specifications 1. Specifications 1.1 FTXS Series 60 Hz, 208 - 230 V Indoor Unit Model FTXS09LVJU RXS09LVJU Outdoor Unit Capacity Rated (Min.~Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min.~Max.) Power Factor COP (Rated) EER (Rated) Liquid Piping Gas Connections Drain Heat Insulation Max. Interunit Piping Length Max.
Specifications SiUS091133 60 Hz, 208 - 230 V Indoor Unit Model FTXS15LVJU RXS15LVJU Outdoor Unit Capacity Rated (Min.~Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min.~Max.) Power Factor COP (Rated) EER (Rated) Liquid Piping Gas Connections Drain Heat Insulation Max. Interunit Piping Length Max.
SiUS091133 Specifications 60 Hz, 208 - 230 V Indoor Unit Model FTXS24LVJU RXS24LVJU Outdoor Unit Capacity Rated (Min.~Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min.~Max.) Power Factor COP (Rated) EER (Rated) Liquid Piping Gas Connections Drain Heat Insulation Max. Interunit Piping Length Max.
Specifications SiUS091133 60 Hz, 208 - 230 V Model Indoor Unit Outdoor Unit Capacity Rated (Min. ~ Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min. ~ Max.) Power Factor (Rated) COP (Rated) EER (Rated) Liquid Piping Gas Connections Drain Heat Insulation Max. Interunit Piping Length Max.
SiUS091133 Specifications 60 Hz, 208 - 230 V Indoor Unit Model Capacity Rated (Min. ~ Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min. ~ Max.) Power Factor (Rated) COP (Rated) EER (Rated) Liquid Piping Gas Connections Drain Heat Insulation Max. Interunit Piping Length Max.
Specifications 1.2 SiUS091133 FDXS Series 60 Hz, 208 - 230 V Indoor Unit Model FDXS09LVJU RXS09LVJU Outdoor Unit Capacity Rated (Min.~Max.) Moisture Removal Running Current (Rated) Power Consumption Rated (Min.~Max.) Power Factor COP (Rated) EER (Rated) Liquid Piping Gas Connections Drain Heat Insulation Max. Interunit Piping Length Max.
SiUS091133 Part 3 Printed Circuit Board Connector Wiring Diagram 1. Indoor Unit.................................................................................................13 1.1 FTXS09/12LVJU ........................................................................................ 13 1.2 FTXS15/18/24/30/36LVJU ......................................................................... 16 1.3 FDXS09/12LVJU ........................................................................................ 19 2.
Indoor Unit SiUS091133 1. Indoor Unit 1.
SiUS091133 PCB Detail Indoor Unit PCB (1): Control PCB V1 H1 FU1 H2 FG H3 LED A S32 S1 S21 JB JA JC S41 S47 S46 S25 2P206687-4 Printed Circuit Board Connector Wiring Diagram 14
Indoor Unit SiUS091133 PCB (2): Signal Receiver PCB S48 3P210728-1 PCB (3): Display PCB RTH1 SW1 LED3 LED2 LED1 3P210728-1 S49 PCB (4): INTELLIGENT EYE Sensor PCB S26 3EB86013-1 15 Printed Circuit Board Connector Wiring Diagram
SiUS091133 1.
Indoor Unit PCB Detail SiUS091133 PCB (1): Control PCB V1 H1 FU1 (3.
SiUS091133 Indoor Unit PCB (2): Signal Receiver PCB S48 3P224121-1 PCB (3): Display PCB RTH1 SW1 LED3 LED2 S49 LED1 3P224121-1 PCB (4): INTELLIGENT EYE Sensor PCB S36 3P227885-1 Printed Circuit Board Connector Wiring Diagram 18
Indoor Unit 1.3 SiUS091133 FDXS09/12LVJU Connectors and Other Parts A1P: Control PCB 1) 2) 3) 4) 5) 6) 7) 8) S1 S7 S21 S26 S32 H1, H2, H3 FG (GND) JA 9) JB JC 10) LED A 11) FU1 (F1U) 12) V1 (V1TR) Connector for AC fan motor Connector for AC fan motor (Hall IC) Connector for centralized control (HA) Connector for display PCB Connector for indoor heat exchanger thermistor Connector for terminal board Connector for terminal board (ground) Address setting jumper Refer to page 388 for detail.
SiUS091133 PCB Detail Indoor Unit A1P: Control PCB V1 S1 H2 FG H1 FU1 H3 S7 S21 LED A JA JC JB S32 S26 2P292535-1 A2P: Display PCB S1 LED3 LED2 RTH1 1 SW1 2P084375-1 LED 1 does not function.
Outdoor Unit SiUS091133 2. Outdoor Unit 2.1 RXS09/12LVJU Connectors and Other Parts PCB (1): Filter PCB 1) 2) 3) 4) 5) 6) 7) 8) S11 AC1, AC2, S E1, E2 HL2, HN2 HR1 FU1 FU3 V2, V3 Connector for main PCB Connector for terminal board Terminal for ground wire Connector for main PCB Connector for reactor Fuse (3.
SiUS091133 PCB Detail Outdoor Unit PCB (1): Filter PCB HR1 E1, E2 HN2 AC2 AC1 V2 V3 S11 FU3 S HL2 3P254234-7 FU1 PCB (2): Main PCB U VW S10 J4 S90 LED A S70 S40 HR2 S20 S80 HL3 V1 HN3 FU2 S100 2P290759-2 PCB (3): Forced Operation Button PCB SW1 S110 3P255755-2 Printed Circuit Board Connector Wiring Diagram 22
Outdoor Unit 2.2 SiUS091133 RXS15/18LVJU Connectors and Other Parts PCB (1): Filter PCB 1) 2) 3) 4) 5) 6) 7) 8) 9) S11 HL1, HN1, S E1, E2 HL2, HN2 HL4, HN4 FU1 FU3 V2, V3 SW1 Connector for [S10] on main PCB Connector for terminal board Terminal for ground wire Connector for [HL3] [HN3] on main PCB Connector for [S12] on main PCB Fuse (3.15 A, 250 V) Fuse (30 A, 250 V) Varistor Forced cooling operation [ON/OFF] button Refer to page 384 for detail.
SiUS091133 PCB Detail Outdoor Unit PCB (1): Filter PCB FU3 V2 V3 S HL1 HN1 SW1 FU1 HN4, HL4 HN2 HL2 E2, E1 S11 3P273862-3 PCB (2): Main PCB S80 S70 FU2 S20 S40 S90 S10 S12 J6 V1 LED A U, V, W HN3 Printed Circuit Board Connector Wiring Diagram HL3 2P273854-5 24
Outdoor Unit 2.
SiUS091133 PCB Detail Outdoor Unit PCB (1): Main PCB FU1 AC1 E1 E2 FU2 V3 V100 HR1 V2 V9 AC2 HR2 S10 S101 V5 S80 S90 S20 S40 S70 S51 FU3 W V U 2P266264-5 2P266264-6 PCB (2): Service Monitor PCB LED A SW1 SW4-B S52 S102 3P169059-1 SW4-A and SW4-C has no function and keep it off.
SiUS091133 Part 4 Function and Control 1. Main Functions..........................................................................................28 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 1.11 1.12 Temperature Control .................................................................................. 28 Frequency Principle.................................................................................... 28 Airflow Direction Control (FTXS Series) .....................................................
SiUS091133 Main Functions 1. Main Functions 1.1 Temperature Control Definitions of Temperatures The definitions of temperatures are classified as following.
Main Functions Inverter Principle SiUS091133 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: Phase 1 2 Drawing of Inverter Description The supplied AC power source is converted into the DC power source for the present. The DC power source is reconverted into the three phase AC power source with variable frequency.
SiUS091133 Frequency Limits Main Functions The following functions regulate the minimum and maximum frequency: Frequency Low High Forced Cooling Operation 1.3 Functions Four-way valve operation compensation. Refer to page 45. Compressor protection function. Refer to page 46. Discharge pipe temperature control. Refer to page 46. Input current control. Refer to page 47. Freeze-up protection control. Refer to page 48. Heating peak-cut control. Refer to page 48. Defrost control.
Main Functions 3-D Airflow SiUS091133 Alternative repetition of vertical and horizontal swing motions enables uniform airconditioning of the entire room. This function is effective for starting the air conditioner. When the horizontal swing and vertical swing are both set to automatic operation, the airflow becomes 3-D airflow. The horizontal and vertical swing motion is altered and the airflow direction changes in the order shown in the following diagram.
SiUS091133 1.4 Main Functions 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 temperature and the target temperature. This is done through phase control and Hall IC control. For more information about Hall IC, refer to the troubleshooting for fan motor on page 99.
Main Functions 1.5 SiUS091133 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] setting buttons are inoperable. Detail The microcomputer automatically sets the temperature and airflow rate. The difference between the room thermistor temperature at start-up and the target temperature is divided into two zones.
SiUS091133 1.6 Main Functions Automatic Operation Outline Detail 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 temperature and the set temperature at start-up. The unit automatically switches the operation mode to maintain the room temperature at the set temperature.
Main Functions 1.7 SiUS091133 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 difference returns to the zone C after being in the zone A. The system resumes from defrost control in any zones except A. The operation turns on in any zones except A.
SiUS091133 1.8 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.
Main Functions 1.9 Outline SiUS091133 ECONO Operation ECONO operation reduces the maximum operating current and the power consumption. 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. It is easily activated from the wireless remote controller by pushing the [ECONO] button. When this function is activated, the maximum capacity also decreases.
SiUS091133 Main Functions 1.10 INTELLIGENT EYE Operation (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. Detail 1. Detection method by INTELLIGENT EYE sampling (20 msec.) Sensor output If the sensor detects the outputs 10 times/sec. or more, it judges humans exist. 1 sec.
Main Functions SiUS091133 1.11 Inverter POWERFUL Operation Outline In order to exploit the cooling and heating capacity to full extent, operate the air conditioner by increasing the indoor fan rotating speed and the compressor frequency. Detail When [POWERFUL] button is pressed, the fan speed and target temperature are converted to the following states for 20 minutes.
SiUS091133 Main Functions 1.12 Other Functions 1.12.1 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 the airflow is either stopped or made very weak thereby carrying out comfortable heating of the room. *The cold air blast is also prevented using similar control when the defrosting operation is started or when the thermostat is turned ON. 1.12.
Function of Thermistor SiUS091133 2. Function of Thermistor Electronic expansion valve (1) (3) Four way valve (2) Compressor (R14247) (1) Outdoor Heat Exchanger Thermistor 1. The outdoor heat exchanger thermistor is used for controlling the target discharge pipe temperature.
SiUS091133 Control Specification 3. Control Specification 3.1 Mode Hierarchy Outline There are 3 modes; normal operation mode, forced operation mode and the power transistor test mode for installation and servicing.
Control Specification 3.2 Outline SiUS091133 Frequency Control 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 frequency 2. Frequency command from the indoor unit (Difference between the room thermistor temperature and the target temperature) 3. Frequency initial setting 4.
SiUS091133 Control Specification 2. Determine upper limit frequency The minimum value is set as an upper limit frequency among the frequency upper limits of the following functions: Compressor protection, input current, discharge pipe temperature, heating peak-cut, freeze-up protection, defrost. 3.
Control Specification 3.3 SiUS091133 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. Detail ON Condition When the discharge pipe temperature is below A, the inverter operation in open phase starts.
SiUS091133 Control Specification 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 activated when defrosting.) (Hz) Frequency C B A D E (sec.) Time F (R13528) 09/12 class 48 64 88 240 360 180 A (Hz) B (Hz) C (Hz) D (seconds) E (seconds) F (seconds) 3.
Control Specification 3.5 Outline SiUS091133 Input Current Control The microcomputer calculates the input current while the compressor is running, and sets the frequency upper limit from the input current. In case of heat pump models, this control which is the upper limit control of the frequency takes priority over the lower limit of control of four-way valve operation compensation.
SiUS091133 3.6 Control Specification 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. Indoor heat exchanger thermistor temperature 13˚C (55.
Control Specification 3.8 SiUS091133 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 OFF during defrosting. 3. Fan OFF delay when stopped The outdoor fan is turned OFF 60 seconds after the compressor stops. 4.
SiUS091133 Control Specification 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 are determined with the outdoor temperature and the outdoor heat exchanger temperature. The system is in heating operation. The compressor operates for 6 minutes.
Control Specification SiUS091133 3.11 Electronic Expansion Valve Control During target discharge pipe temperature control When the frequency changes under target discharge pipe temperature control When the disconnection of the discharge pipe thermistor is ascertained When the frequency changes under the control for disconnection of the discharge pipe thermistor Under defrost control The followings are the examples of electronic expansion valve control which function in each operation mode.
SiUS091133 Control Specification 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 stopped, the pressure equalization control is activated. The electronic expansion valve opens, and develops the pressure equalization. 3.11.
Control Specification SiUS091133 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 thermistor is disconnected, the electronic expansion valve opens according to the outdoor temperature and the operation frequency, operates for a specified time, and then stops.
SiUS091133 Control Specification 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 Outline An excessive output current is detected and the OL temperature is observed to protect the compressor.
SiUS091133 Part 5 Operation Manual 1. System Configuration................................................................................56 2. FTXS Series..............................................................................................57 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 Remote Controller ...................................................................................... 57 AUTO · DRY · COOL · HEAT · FAN Operation ..........................................
SiUS091133 System Configuration 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 of operation and how to check if it can cool (or heat) well, and how to use it efficiently. Providing instructions to the user can reduce requests for servicing by 80%.
FTXS Series SiUS091133 2. FTXS Series 2.1 Remote Controller Names of Parts Remote Controller Signal transmitter Display (LCD) • Displays the current settings. (In this illustration, each section is shown with all its displays on for the purpose of explanation.) 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 remote controller, such as a curtain, the unit will not operate.
SiUS091133 FTXS Series Open the front cover MODE selector button ECONO button • Selects the operation mode. (AUTO/DRY/COOL/HEAT/ FAN) Page 11 • ECONO operation. Page 19 SWING button • Adjusting the airflow direction. Page 13 QUIET button • OUTDOOR UNIT QUIET operation. Page 18 COMFORT/SENSOR button • COMFORT AIRFLOW and INTELLIGENT EYE operation. Page 15,16 OFF TIMER button Page 20 : WEEKLY button : PROGRAM button : COPY button TIMER CANCEL button • Cancels the timer setting.
FTXS Series 2.2 SiUS091133 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. To start operation 1. Press and select an operation mode. • Each pressing of the button advances the mode setting in sequence. COOLING ONLY model HEAT PUMP model 2. Press DRY COOL FAN AUTO DRY COOL HEAT FAN .
SiUS091133 FTXS Series To change the temperature setting Press or . TEMP°F/°C TEMP°F/°C • 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) Press to raise the temperature and press temperature. to lower the DRY or FAN operation The temperature setting is not variable.
FTXS Series 2.3 SiUS091133 Adjusting the Airflow Direction and Rate 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. • The louvers (horizontal blades) will begin to swing. Right and left airflow direction Press . •“ ” is displayed on the LCD. • The fins (vertical blades) will begin to swing. The 3-D airflow direction Press and .
SiUS091133 FTXS Series FTXS09/12LVJU To adjust the airflow rate setting Press . • Each pressing of advances the airflow rate setting in sequence. Indoor unit quiet Auto High Middle high Low Middle low Middle • When the airflow is set to “ ”, indoor unit quiet operation will start and the noise from the unit will become quieter. • In indoor unit quiet operation, the airflow rate is set to a weak level. • In DRY operation, the airflow rate setting is not variable.
FTXS Series SiUS091133 FTXS15/18/24/30/36LVJU To adjust the airflow rate setting Press . • Each pressing of advances the airflow rate setting in sequence. Indoor unit quiet Auto High Middle high Low Middle low Middle • When the airflow is set to “ ”, indoor unit quiet operation will start and the noise from the unit will become quieter. • In indoor unit quiet operation, the airflow rate is set to a weak level. • In DRY operation, the airflow rate setting is not variable.
SiUS091133 2.4 FTXS Series COMFORT AIRFLOW / INTELLIGENT EYE Operation COMFORT AIRFLOW / INTELLIGENT EYE Operation 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, providing comfortable temperatures without air blowing directly on people. COOL operation HEAT operation INTELLIGENT EYE operation “INTELLIGENT EYE” is the infrared sensor which detects human movement.
FTXS Series SiUS091133 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. Display • By selecting “ ” from the following icons, the air conditioner will be in COMFORT AIRFLOW operation combined with INTELLIGENT EYE operation.
SiUS091133 2.5 FTXS Series 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. • POWERFUL operation ends in 20 minutes. Then the system automatically operates again with the previous settings which were used before POWERFUL operation. • “ ” is displayed on the LCD. To cancel POWERFUL operation Press • “ again.
FTXS Series 2.6 SiUS091133 OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET operation lowers the noise level of the outdoor unit by changing the frequency and fan speed on the outdoor unit. This function is convenient during the night. To start OUTDOOR UNIT QUIET operation Press • “ . ” is displayed on the LCD. To cancel OUTDOOR UNIT QUIET operation Press • “ [Example] again. ” is no longer displayed on the LCD.
SiUS091133 2.7 FTXS Series ECONO Operation 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 trip when the product runs alongside other appliances. To start ECONO operation Press • “ during operation. ” is displayed on the LCD. To cancel ECONO operation Press • “ again. ” is no longer displayed on the LCD.
FTXS Series 2.8 SiUS091133 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 the clock is correct. If not, set the clock to the present time. 1. Press . “ ” is displayed on the LCD. “ • “ ” blinks. ” is no longer displayed on the LCD. 2. Press until the time setting reaches the point you like.
SiUS091133 2.9 FTXS Series ON TIMER Operation ON TIMER Operation To use ON TIMER operation • Check that the clock is correct. If not, set the clock to the present time. 1. Press . “ ” is displayed on the LCD. “ •“ ” blinks. ” and day of the week are no longer displayed on the LCD. 2. Press until the time setting reaches the point you like. • Each pressing of either button increases or decreases the time setting by 10 minutes. Holding down either button changes the setting rapidly. 3.
FTXS Series SiUS091133 2.10 WEEKLY TIMER Operation WEEKLY TIMER Operation Up to 4 timer settings can be saved for each day of the week. It is convenient if the WEEKLY TIMER is set according to the family’s life style. Using in these cases of WEEKLY TIMER Example: The same timer settings are made for the week from Monday through Friday while different timer settings are made for the weekend. [Monday] Make timer settings up to programs 1-4.
SiUS091133 FTXS Series WEEKLY TIMER Operation To use WEEKLY TIMER operation Setting mode • Make sure the day of the week and time are set. If not, set the day of the week and time. Program 1 Program 2 ON OFF Program 3 ON Program 4 OFF 6:00 8:30 17:30 22:00 [Monday] Setting Displays Day and number settings 1. Press ON/OFF settings Time settings Temperature settings . • The day of the week and the reservation number of the current day will be displayed.
FTXS Series SiUS091133 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 . • The time will be set. •“ ” and the temperature blink. 8. Press to select the desired temperature. • The temperature can be set between 50˚F (10˚C) and 90˚F (32˚C). Cooling: The unit operates at 64˚F (18˚C) even if it is set at 50 (10) to 63˚F (17˚C).
SiUS091133 FTXS Series WEEKLY TIMER Operation Copy mode • A reservation made once can be copied to another day of the week. The whole reservation of the selected day of the week will be copied. Program 1 6:00 COPY Program 1 [Tuesday] to [Friday] OFF ON 8:30 17:30 77˚F (25˚C) [Monday] Program 4 Program 2 Program 3 ON OFF 81˚F (27˚C) 22:00 Program 2 Program 3 ON OFF ON OFF 81˚F (27˚C) 77˚F (25˚C) 6:00 Program 4 8:30 17:30 22:00 Setting Displays Confirmation display 1. Press 2.
FTXS Series SiUS091133 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. 2. Press to select the day of the week and the reservation number to be confirmed. • Pressing displays the reservation details. • To change the confirmed reserved settings, select the reservation number and press . The mode is switched to setting mode. Go to 3.
SiUS091133 FTXS Series WEEKLY TIMER Operation To delete reservations The individual reservation 1. Press . • The day of the week and the reservation number will be displayed. 2. Press to select the day of the week and the reservation number to be deleted. 3. Press . •“ ” and “ON” or “OFF” blink. 4. Press • Pressing and select “ blank ”. changes ON/OFF TIMER mode. • The reservation will be no setting with selecting “blank”. ON TIMER 5. Press OFF TIMER blank .
FDXS Series SiUS091133 3. FDXS Series 3.1 Remote Controller Names of Parts Remote Controller Signal transmitter Display (LCD) • Displays the current settings. (In this illustration, each section is shown with all its displays on for the purpose of explanation.) 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 remote controller, such as a curtain, the unit will not operate.
SiUS091133 FDXS Series Open the front cover MODE selector button • Selects the operation mode. (AUTO/DRY/COOL/HEAT/ FAN) Page 11 QUIET button ECONO button • OUTDOOR UNIT QUIET operation. Page 15 OFF TIMER button • ECONO operation. Page 16 ON TIMER button Page 18 Page 17 TIMER CANCEL button CLOCK button • Cancels the timer setting. Page 17,18 SELECT button • Changes the ON/OFF TIMER settings.
FDXS Series 3.2 SiUS091133 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. To start operation 1. Press and select an operation mode. • Each pressing of the button advances the mode setting in sequence. AUTO 2. Press DRY COOL HEAT FAN . •“ ” is displayed on the LCD. • The OPERATION lamp lights green.
SiUS091133 FDXS Series 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) Press to raise the temperature and press temperature. to lower the DRY or FAN operation The temperature setting is not variable.
FDXS Series 3.3 SiUS091133 Adjusting the Airflow Rate Adjusting the Airflow Rate To adjust the airflow rate setting Press . • Each pressing of Auto advances the airflow rate setting in sequence. Indoor unit quiet High Middle high Low Middle low Middle • When the airflow is set to “ ”, indoor unit quiet operation will start and the noise from the unit will become quieter. • In indoor unit quiet operation, the airflow rate is set to a weak level.
SiUS091133 3.4 FDXS Series 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. • POWERFUL operation ends in 20 minutes. Then the system automatically operates again with the previous settings which were used before POWERFUL operation. •“ ” is displayed on the LCD. To cancel POWERFUL operation Press •“ again.
FDXS Series 3.5 SiUS091133 OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET operation lowers the noise level of the outdoor unit by changing the frequency and fan speed on the outdoor unit. This function is convenient during night. To start OUTDOOR UNIT QUIET operation Press • “ . ” is displayed on the LCD. To cancel OUTDOOR UNIT QUIET operation Press •“ [Example] again. ” is no longer displayed on the LCD.
SiUS091133 3.6 FDXS Series ECONO Operation 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 trip when the product runs alongside other appliances. To start ECONO operation Press •“ during operation. ” is displayed on the LCD. To cancel ECONO operation Press •“ again. ” is no longer displayed on the LCD.
FDXS Series 3.7 SiUS091133 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 the clock is correct. If not, set the clock to the present time. 1. Press . “ “ •“ ” is displayed on the LCD. ” blinks. ” is no longer displayed on the LCD. 2. Press until the time setting reaches the point you like.
SiUS091133 3.8 FDXS Series ON TIMER Operation ON TIMER Operation To use ON TIMER operation • Check that the clock is correct. If not, set the clock to the present time. 1. Press . “ “ •“ ” is displayed on the LCD. ” blinks. ” is no longer displayed on the LCD. 2. Press until the time setting reaches the point you like. • Each pressing of either button increases or decreases the time setting by 10 minutes. Holding down either button changes the setting rapidly. 3. Press again.
SiUS091133 Part 6 Service Diagnosis 1. Troubleshooting with LED .........................................................................89 1.1 Indoor Unit.................................................................................................. 89 1.2 Outdoor Unit ............................................................................................... 89 2. Problem Symptoms and Measures ...........................................................90 3. Service Check Function ................
SiUS091133 5.8 5.9 5.10 5.11 5.12 5.13 5.14 5.15 Service Diagnosis “Inverter Checker” Check ......................................................................... 146 Rotation Pulse Check on the Outdoor Unit PCB ...................................... 148 Installation Condition Check..................................................................... 149 Discharge Pressure Check....................................................................... 150 Outdoor Fan System Check ........................
Troubleshooting with LED SiUS091133 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. When a signal transmission error occurs between the indoor and outdoor units. In either case, conduct the diagnostic procedure described in the following pages. FTXS series (Ex.
SiUS091133 Problem Symptoms and Measures 2. Problem Symptoms and Measures Symptom Check Item The unit does not operate. Check the power supply. Check the type of the indoor unit. Check the outdoor temperature. Check if the rated voltage is supplied. Check if the indoor unit type is compatible with the outdoor unit. Heating operation cannot be used when the outdoor temperature is 24°C (75.2°F) or higher, and cooling operation cannot be used when the outdoor temperature is below 10°C (50°F).
Service Check Function SiUS091133 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. Timer cancel button < ARC452 Series > (R14460) 2. Press the timer cancel button repeatedly until a long beep sounds. The code indication changes in the sequence shown below. No. 1 2 3 4 5 6 7 8 9 10 11 12 Note: 91 Code 00 U4 L5 E6 H6 H0 A6 E7 U0 F3 A5 F6 No.
SiUS091133 Check Method 2 Service Check Function 1. Press the 3 buttons (TEMP, TEMP, MODE) at the same time to enter the diagnosis mode. (R14550) The left-side number blinks. (R9430) 2. Press the [TEMP] or button and change the number until you hear the two consecutive beeps or the long beep. (R14551) 3. Diagnose by the sound. beep : The left-side number does not correspond with the error code.
Service Check Function SiUS091133 5. Press the [TEMP] or buttonand change the number until you hear the long beep. (R14547) 6. Diagnose by the sound. beep : The left-side number does not correspond with the error code. two consecutive beeps : The left-side number corresponds with the error code but the right-side number does not. long beep : Both the left-side and right-side number corresponds with the error code. 7. Determine the error code.
SiUS091133 Troubleshooting 4. Troubleshooting 4.
Troubleshooting 4.2 SiUS091133 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 settings.
SiUS091133 Troubleshooting Troubleshooting Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Caution Check the combination of the indoor and outdoor unit. OK? NO Match the compatible models. YES Check the connection of connectors (See Note.). OK? ∗ To secure the connection, once disconnect the connector and then reconnect it. YES Check the power supply voltage. NO Voltage as rated? NO Correct the power supply. YES Start operation.
Troubleshooting 4.3 SiUS091133 Freeze-up Protection Control or Heating Peak-cut Control Remote Controller Display A5 Method of Malfunction Detection Freeze-up protection control During cooling operation, the freeze-up protection control (operation halt) is activated according to the temperature detected by the indoor heat exchanger thermistor.
SiUS091133 Troubleshooting Troubleshooting Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Caution Check No.01 Refer to P.142 Check the air passage. Is there any short circuit? YES Provide sufficient air passage. NO Check the air filter. Dirty? Is it very dirty? YES Clean the air filter. NO Check the dust accumulation on the indoor heat exchanger. Dirty? Is it very dirty? YES Clean the indoor heat exchanger. NO Check Check No. No.
Troubleshooting 4.4 SiUS091133 Fan Motor or Related Abnormality 4.4.1 DC Motor (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 fan motor operation. Malfunction Decision Conditions 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.
SiUS091133 Troubleshooting Troubleshooting Caution Check No.02 Refer to P.143 Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Turn off the power supply and rotate the fan by hand. Does the fan rotate smoothly? NO Replace the indoor fan motor. YES Turn the power on and start operation. Does the fan rotate? Turn off the power supply NO and disconnect the fan motor connector, then turn the power on.
Troubleshooting SiUS091133 4.4.2 AC Motor (FDXS 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 fan motor operation. Malfunction Decision Conditions 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.
SiUS091133 Troubleshooting Troubleshooting Caution Check No.04 Refer to P.143 Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Start operation. Does the fan rotate? YES Check No. 04 Check Hall IC NO Turn off the power supply and rotate the fan by hand. Is there an output? Does the fan rotate smoothly? NO YES YES Replace the fan motor or the indoor unit PCB. Replace the fan motor. Check the fan motor voltage.
Troubleshooting 4.5 SiUS091133 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 than 4.96 V or less than 0.04 V during compressor operation. Supposed Causes Disconnection of connector Defective thermistor Defective indoor unit PCB Troubleshooting Caution Check No.01 Refer to P.
SiUS091133 4.6 Troubleshooting Refrigerant Shortage Remote Controller Display Method of Malfunction Detection U0 Refrigerant shortage detection I: Refrigerant shortage is detected by checking the input current value and the compressor running frequency. If the refrigerant is short, the input current is lower than the normal value. Refrigerant shortage detection II: Refrigerant shortage is detected by checking the discharge pipe temperature and the opening of the electronic expansion valve.
Troubleshooting SiUS091133 Refrigerant shortage detection III: (09/12 class only) When the difference of the temperature is smaller than L, it is regarded as refrigerant shortage. Cooling Heating room thermistor temperature – indoor heat exchanger temperature outdoor heat exchanger temperature – outdoor temperature indoor heat exchanger temperature – room thermistor temperature outdoor temperature – outdoor heat exchanger temperature L 4.0°C (7.2°F) 4.0°C (7.2°F) 3.0°C (5.4°F) 3.0°C (5.
SiUS091133 Troubleshooting Troubleshooting Caution Check No.01 Refer to P.142 Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Any thermistor disconnected? NO Check No.12 Refer to P.144 Stop valve closed? YES ∗ Discharge pipe thermistor ∗ Indoor or outdoor heat exchanger thermistor ∗ Room temperature thermistor ∗ Outdoor temperature thermistor YES Replace the thermistor(s) in position. Open the stop valve.
Troubleshooting 4.7 SiUS091133 Low-voltage Detection or Over-voltage Detection Remote Controller Display Method of Malfunction Detection U2 Indoor Unit The zero-cross detection of the power supply is evaluated by the indoor unit PCB. Outdoor Unit Low-voltage detection: An abnormal voltage drop is detected by the DC voltage detection circuit. Over-voltage detection: An abnormal voltage rise is detected by the over-voltage detection circuit.
SiUS091133 Troubleshooting Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Check the power supply voltage. Voltage as rated? NO Correct the power supply. YES Check the connection of the compressor harness. Loose or disconnected? YES Reconnect the harness. NO (Precaution before turning on the power again) Make sure the power has been off for at least 30 seconds. Turn on the power again.
Troubleshooting 4.8 SiUS091133 Signal Transmission Error (between Indoor Unit and Outdoor Unit) Remote Controller Display U4 Method of Malfunction Detection The data received from the outdoor unit in indoor unit-outdoor unit signal transmission is checked whether it is normal. Malfunction Decision Conditions The data sent from the outdoor unit cannot be received normally, or the content of the data is abnormal.
SiUS091133 Troubleshooting Troubleshooting Caution Check No.11 Refer to P.144 Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Check the indoor unit - outdoor unit connection wires. Is there any wiring error? YES Correct the indoor unit - outdoor unit connection wires. NO Check the voltage of the connection wires on the indoor terminal board between No. 1 and No. 3, and between No. 2 and No. 3.
Troubleshooting 4.9 SiUS091133 Signal Transmission Error on Outdoor Unit PCB (24/30/36 Class Only) Remote Controller Display U7 Method of Malfunction Detection Communication error between microcomputer mounted on the main microcomputer and PM1. Malfunction Decision Conditions The abnormality is determined when the data sent from the PM1 can not be received for 9 seconds. The error counter is reset when the data from the PM1 can be successfully received.
SiUS091133 Troubleshooting 4.10 Unspecified Voltage (between Indoor Unit and Outdoor Unit) Remote Controller Display UA Method of Malfunction Detection The supply power is detected for its requirements (different from pair type and multi type) by the indoor / outdoor transmission signal. Malfunction Decision Conditions The pair type and multi type are interconnected.
Troubleshooting SiUS091133 4.11 Outdoor Unit PCB Abnormality Remote Controller Display E1 Method of Malfunction Detection The system checks if the microprocessor is working in order. The system checks if the zero-cross signal comes in properly. Malfunction Decision Conditions The microprocessor program runs out of control. The zero-cross signal is not detected.
SiUS091133 Troubleshooting Troubleshooting 24/30/36 class Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Turn on the power again. Error again? ∗ Before you check the LED A, cancel the standby electricity saving function by starting fan operation with the remote controller. ∗ Wait at least for 7 sec. after YES turning on the power. Replace the outdoor unit PCB. NO Check to see if the unit is grounded.
Troubleshooting SiUS091133 4.12 OL Activation (Compressor Overload) Remote Controller Display E5 Method of Malfunction Detection A compressor overload is detected through compressor OL. Malfunction Decision Conditions If the error repeats, the system is shut down. Reset condition: Continuous run for about 60 minutes without any other error The operating temperature condition is not specified.
SiUS091133 Troubleshooting 4.13 Compressor Lock Remote Controller Display E6 Method of Malfunction Detection A compressor lock is detected by checking the compressor running condition through the position detection circuit. Malfunction Decision Conditions 09/12 class Operation stops due to overcurrent. If the error repeats, the system is shut down.
Troubleshooting SiUS091133 4.14 DC Fan Lock Remote Controller Display E7 Method of Malfunction Detection An error is determined with the high-voltage fan motor rotation speed detected by the Hall IC. Malfunction Decision Conditions The fan does not start in 15 ~ 30 seconds (depending on the model) even when the fan motor is running. If the error repeats, the system is shut down.
SiUS091133 Troubleshooting 4.15 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 9.25 ~ 20 A for 2.5 seconds with the compressor running. (The upper limit of the current decreases when the outdoor temperature exceeds a certain level.
Troubleshooting SiUS091133 4.16 FourWay Valve Abnormality Remote Controller Display EA Method of Malfunction Detection The room temperature thermistor and the indoor heat exchanger thermistor are checked if they function within their normal ranges in each operation mode. Malfunction Decision Conditions A following condition continues over 1 ~ 10 minutes after operating for 5 ~ 10 minutes. Cooling / Dry (room thermistor temp. – indoor heat exchanger temp.
SiUS091133 Troubleshooting Troubleshooting Caution Check No.01 Refer to P.142 Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Four-way valve coil disconnected (loose)? YES Correct the four-way valve coil. NO Check No.13 Refer to P.145 Check No.14 Refer to P.145 Harness out of connector? YES Reconnect the harness. NO Check the continuity of the four-way valve coil and harness. Disconnect the harness from the connector.
Troubleshooting SiUS091133 4.17 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 the discharge pipe thermistor rises above A, the compressor stops. The error is cleared when the discharge pipe temperature has dropped below B.
SiUS091133 Troubleshooting Troubleshooting Caution Check No.01 Refer to P.142 Check No.12 Refer to P.144 Check No.14 Refer to P.145 Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Check No. 01 Check the thermistors. OK Check No. 12 Check the electronic expansion valve. NG * Discharge pipe thermistor * Outdoor heat exchanger thermistor * Outdoor temperature thermistor NG Replace the defective thermistor(s).
Troubleshooting SiUS091133 4.18 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 thermistor exceeds the limit. Malfunction Decision Conditions The temperature sensed by the outdoor heat exchanger thermistor rises above about 60 ~ 65°C (140 ~ 149°F).
SiUS091133 Troubleshooting Troubleshooting Caution Check No.01 Refer to P.142 Check No.12 Refer to P.144 Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Check the installation space. Check No. 17 Check the installation condition. NG OK Check No.17 Refer to P.149 Check No. 19 Check the outdoor fan. NG OK Check No.18 Refer to P.150 Check No. 18 Check the discharge pressure. NG Change the installation location or direction.
Troubleshooting SiUS091133 4.19 Compressor System Sensor Abnormality 4.19.1 09/12/15/18 Class 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 of the range 0.5 ~ 4.5 V (sensor output converted to voltage value) The DC voltage before compressor start-up is below 50 V.
SiUS091133 Troubleshooting 4.19.2 24/30/36 Class Remote Controller Display H0 Method of Malfunction Detection The system checks the supply voltage and the DC voltage before the compressor starts. The system checks the compressor current right after the compressor starts. Malfunction Decision Conditions The supply voltage and the DC voltage is obviously low or high. The compressor current does not run when the compressor starts.
Troubleshooting SiUS091133 Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Turn off the power. Check the connection of the reactor. Connection OK? NO Connect the reactor properly. YES Check the connection of the compressor. Connection OK? NO Connect the compressor properly. YES Check the reactor.
SiUS091133 Troubleshooting 4.20 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 Conditions If the error repeats, the system is shut down.
Troubleshooting Troubleshooting SiUS091133 09/12/15/18 class Caution Check No.15 Refer to P.146 Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Turn off the power. Check the power supply voltage. Check No.18 Refer to P.150 Voltage as rated? Check No.20 Refer to P.151 NO Correct the power supply. YES Check No. 18 Check the discharge pressure. OK? NO Replace the stop valve. YES Check No.
SiUS091133 Troubleshooting Check No.15 Refer to P.146 Check No.18 Refer to P.150 Troubleshooting 24/30/36 class Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Turn off the power. Check the power supply voltage. Voltage as rated? NO Correct the power supply. YES Check No. 18 Check the discharge pressure. OK? NO Replace the stop valve. YES Check the connection.
Troubleshooting SiUS091133 4.21 DC Voltage / Current Sensor Abnormality (09/12 Class Only) Remote Controller Display H8 Method of Malfunction Detection DC voltage or DC current sensor abnormality is identified based on the compressor running frequency and the input current. Malfunction Decision Conditions If the error repeats, the system is shut down.
SiUS091133 Troubleshooting 4.22 CT or Related Abnormality (24/30/36 Class Only) Remote Controller Display H8 Method of Malfunction Detection A CT or related error is detected by checking the compressor running frequency and CT-detected input current. Malfunction Decision Conditions The compressor running frequency is more than A Hz, and the CT input current is less than B A. A (Hz) 32 B (A) 0.5 If the error repeats, the system is shut down.
Troubleshooting SiUS091133 Troubleshooting Check No.15 Refer to P.146 Check No.21 Refer to P.152 Caution Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Turn off the power and turn it on again. Start operation. ∗ Running current as shown at right with relay cable 1 or 2? YES Current (guideline) Replace the outdoor unit PCB.
SiUS091133 Troubleshooting 4.23 Thermistor or Related Abnormality (Outdoor Unit) Remote Controller Display H9, J3, J6, P4 Method of Malfunction Detection This fault is identified based on the thermistor input voltage to the microcomputer. A thermistor fault is identified based on the temperature sensed by each thermistor. Malfunction Decision Conditions The thermistor input voltage is above 4.96 V or below 0.04 V with the power on.
Troubleshooting Troubleshooting SiUS091133 In case of “H9” “J3” “J6” Caution Check No.01 Refer to P.142 Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Turn on the power again. Error displayed again on remote controller? NO Reconnect the connectors or thermistors. YES Check No. 01 Check the thermistor resistance value. Normal? J3 error: the discharge pipe temperature is lower than the heat exchanger temperature.
SiUS091133 Troubleshooting 4.24 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 the compressor off, the radiation fin temperature is above A. The error is cleared when the radiation fin temperature drops below B.
Troubleshooting SiUS091133 Troubleshooting Caution Check No.17 Refer to P.149 Check No.19 Refer to P.150 Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. WARNING To cool the electrical components, the outdoor fan starts when the radiation fin temperature rises above C and stops when it drops below B. Turn off the power and turn it on again. Error again or outdoor fan activated? YES NO Check the radiation fin temperature.
SiUS091133 Troubleshooting 4.25 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 radiation fin temperature with the compressor on is above A. The error is cleared when the radiation fin temperature drops below B. If the error repeats, the system is shut down.
Troubleshooting SiUS091133 Troubleshooting Caution Check No.17 Refer to P.149 Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. Turn off the power and turn it on again to start the system. Check No.19 Refer to P.150 Error displayed again? YES Has the PCB been replaced? NO YES NO ∗ Silicon grease Part No.: 1172698 Check the radiation fin temperature. Above A? Check if applied properly on the radiation fin.
SiUS091133 Troubleshooting 4.26 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 occurs while the compressor is running. A speed error occurs while the compressor is running. An output overcurrent signal is fed from the output overcurrent detection circuit to the microcomputer.
Troubleshooting SiUS091133 Troubleshooting Caution Check No.15 Refer to P.146 Be sure to turn off the power switch before connecting or disconnecting connectors, or parts may be damaged. ∗ An output overcurrent may result from wrong internal wiring. If the system is interrupted by an output overcurrent after the wires have been disconnected and reconnected for part replacement, check the wiring again. Check No. 17 Check the installation condition. Check No.17 Refer to P.149 Check No.18 Refer to P.
SiUS091133 Check 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 graph below. The data is for reference purpose only. Temperature (°C / °F) –20 / –4 –15 / 5 –10 / 14 –5 / 23 0 / 32 5 / 41 10 / 50 15 / 59 20 / 68 25 / 77 30 / 86 35 / 95 40 / 104 45 / 113 50 / 122 Resistance (k) 197.8 148.
Check 5.2 SiUS091133 Fan Motor Connector Output Check Check No.02 FTXS series 1. 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). 5. Check the rotation pulse (pins 4 - 1). S1 7 6 5 4 3 2 1 Motor power supply voltage (310 ~ 340 VDC) Unused Unused GND Motor control voltage (15 VDC) Rotation command voltage (1~ 5 VDC) Rotation pulse input (R12404) 5.
SiUS091133 5.4 Check 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 waveform disturbance near the zero cross. (sections circled in Fig.2) Fig.1 5.5 Fig.2 Electronic Expansion Valve Check Check No.12 Conduct the followings to check the electronic expansion valve (EV). 1.
Check 5.6 SiUS091133 FourWay Valve Performance Check Check No.13 Turn the power off and then on again. Start heating operation. S80 voltage at 220 - 240 VAC with compressor on? (Fig. 1) * Four-way valve coil Cooling / Dry : No continuity Heating : Continuity NO Replace the outdoor unit PCB. YES Disconnect the four-way valve coil from the connector and check the continuity. Four-way valve coil resistance at 1000 ~ 2000 W? NO Replace the four-way valve coil. YES Replace the four-way valve.
SiUS091133 5.8 Check “Inverter Checker” Check Check No.15 Characteristics If an 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 failure (control PCB, power module, etc.). The inverter checker makes it possible to judge the cause of trouble easily and securely.
Check SiUS091133 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 in Check No.22, replace the power module. (Replace the main PCB. The power module is united with the main PCB.) If OK in Check No.22, check if there is any solder cracking on the PCB.
SiUS091133 5.9 Check Rotation Pulse Check on the Outdoor Unit PCB Check No.16 09/12 class 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.
Check SiUS091133 5.10 Installation Condition Check Check No.17 Installation condition check Check the allowable dimensions of the air suction and discharge area. NG Change the installation location or direction. OK Is the discharged air short-circuited? YES Change the installation location or direction. NO Is the outdoor heat exchanger very dirty? YES Clean the outdoor heat exchanger.
SiUS091133 Check 5.11 Discharge Pressure Check Check No.18 Discharge pressure check High? NO Replace the compressor. YES Is the stop valve open? NO Open the stop valve. YES Is the connection pipe deformed? YES Replace the pipe installed at the site. NO Is the air filter or indoor / outdoor heat exchanger dirty? Not dirty Dirty Clean the dirty air filter or indoor / outdoor heat exchanger. Replace the compressor. (R15738) 5.12 Outdoor Fan System Check Check No.
Check SiUS091133 5.13 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 referring to the table below. If the resistance is or less than 1 k, short circuit occurs on the main circuit.
SiUS091133 Check 15/18 class 4 3 2 1 – ~ ~ + – + Tester (R14700) 5.14 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 SiUS091133 5.15 Power Module Check Check No.22 Note: Check to make sure that the voltage between (+) and (–) of the power module is approx. 0 V before checking. Disconnect the compressor harness connector from the outdoor unit PCB. To disengage the connector, press the protrusion on the connector. Follow the procedure below to measure resistance between the terminals of the power module and the terminals of the compressor with a multi-tester.
SiUS091133 Check 15/18 class Power module (R16697) 24/30/36 class Power module (R16073) Service Diagnosis 154
SiUS091133 Part 7 Removal Procedure 1. Indoor Unit: FTXS09/12LVJU..................................................................157 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 Removal of Air Filters ............................................................................... 157 Removal of Front Panel............................................................................ 159 Removal of Front Grille ............................................................................
SiUS091133 5.4 5.5 5.6 5.7 5.8 Removal of PCBs ..................................................................................... 308 Removal of Sound Blankets / Thermistors ............................................... 316 Removal of FourWay Valve...................................................................... 320 Removal of Electronic Expansion Valve................................................... 321 Removal of Compressor....................................................................
Indoor Unit: FTXS09/12LVJU SiUS091133 1. Indoor Unit: FTXS09/12LVJU 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. Procedure Step Points 1. Appearance features Warning Dangerous: High voltage A high voltage is applied to all the electric circuits of this product including thermistors.
SiUS091133 Indoor Unit: FTXS09/12LVJU Procedure Step 3. Remove the Titanium apatite photocatalytic airpurifying filters. 1 The Titanium apatite photocatalytic airpurifying filter ASSY is attached to the back of the air filter. Points The right and left filters are interchangeable. Air filter Titanium apatite photocatalytic air-purifying filter ASSY (R7904) 2 Remove the Titanium apatite photocatalytic air-purifying filter ASSY by unfastening the projections from the back of the air filter frame.
Indoor Unit: FTXS09/12LVJU 1.2 Removal of Front Panel Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step 1 SiUS091133 Points Open the front panel over the position where it stops. Front panel (R7906) 2 When reassembling the front panel, fit the right and left rotary shafts one by one into the grooves and fully push them into position. Slide the left rotary shaft to the right and release it.
SiUS091133 1.3 Indoor Unit: FTXS09/12LVJU Removal of Front Grille Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step 1. Remove the service cover. 1 Remove the screw of the service cover. Points Preparation Remove the front panel according to the “Removal of Front Panel”. Service cover (R7911) 2 Pull out the service cover diagonally down in the direction of the arrow.
Indoor Unit: FTXS09/12LVJU SiUS091133 Procedure Step Points 2. Remove the front grille. 1 Remove the 2 screws. (R13490) 2 Unfasten the 3 hooks at the top. The convex marks (...) on the front panel indicate the position of the hooks. Hook (R12715) (R13491) 3 When reassembling, make sure that all the 3 hooks are fastened as they were. Pull the upper part of the front grille out and lift the lower part up, and then remove the front grille.
SiUS091133 1.4 Indoor Unit: FTXS09/12LVJU 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. Procedure Step Points 1. Remove the horizontal blade (large). 1 Open the horizontal blade (large). When reassembling, mount the large horizontal blade to the upper position and the small horizontal blade to the lower position. Do not put them in the wrong place.
Indoor Unit: FTXS09/12LVJU SiUS091133 Procedure Step 2. Remove the horizontal blade (small). 1 Unfasten the center shaft while bending the horizontal blade (small) slightly. Points Horizontal blade (small) (R7925) 2 Unfasten the left shaft. (R7926) 3 There is a key alignment at the right shaft. When reassembling, insert the right shaft first while turning. Unfasten the right shaft.
SiUS091133 Procedure Step 2 Indoor Unit: FTXS09/12LVJU Points Remove the fan guard. (R8079) 4. Remove the vertical blade ASSYs. 1 Detach the pivot from the interlock shaft for vertical blades with a flat screwdriver. Vertical blade ASSY Pivot Interlock shaft (R13092) 2 Remove the interlock rod. Interlock rod (R13093) 3 Unfasten the hooks at the upper 3 positions by pressing them with a flat screwdriver.
Indoor Unit: FTXS09/12LVJU Procedure Step 4 SiUS091133 Remove the vertical blade ASSY. Points A vertical blade ASSY has 5 fins. It is impossible to replace only one fin. The vertical blade ASSY is not marked for difference between right and left.
SiUS091133 1.5 Removal of Electrical Box Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step 1 Indoor Unit: FTXS09/12LVJU The figure shows the connections of the wire harnesses. Points Preparation Remove the front grille according to the “Removal of Front Grille”. Electrical box (R13496) 2 Remove the screw of the wire retainer.
Indoor Unit: FTXS09/12LVJU SiUS091133 Procedure Step 4 Disconnect the connector for the fan motor [S1]. 5 Disconnect the connector for the swing motors [S41]. Points [S1] (R13499) [S41] 6 (R7935) Release the harness for the swing motors from the hook.
SiUS091133 Procedure Step 7 Indoor Unit: FTXS09/12LVJU Pull out the indoor heat exchanger thermistor. Points The position of the indoor heat exchanger thermistor varies by model. Be careful not to lose the clip of the thermistor. Indoor heat exchanger thermistor Clip (R7937) 8 (R11268) Remove the screw and detach the ground wire. Ground wire 9 (R16969) Remove the screw of the electrical box.
Indoor Unit: FTXS09/12LVJU Procedure Step 11 SiUS091133 Points There is a hook also at the lower part of the back. When reassembling the electrical box, make sure that it is securely fastened. Lift up the electrical box and pull it out.
SiUS091133 1.6 Indoor Unit: FTXS09/12LVJU Removal of PCBs Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step 1. Remove the shield plate. 1 The figure shows the appearance of the electrical box. Points Preparation Remove the electrical box according to the “Removal of Electrical Box”.
Indoor Unit: FTXS09/12LVJU SiUS091133 Procedure Step 2. Remove the terminal board. 1 Remove the screw and remove the terminal board. Points Terminal board (R10315) 3. Remove the signal receiver unit. 1 Unfasten the 3 hooks. Signal receiver unit (R12277) 2 Unfasten the hook on the opposite side, and lift up the signal receiver unit.
SiUS091133 Indoor Unit: FTXS09/12LVJU Procedure Step Points Hook (R12278) 3 Remove the signal receiver unit. Signal receiver unit (R8088) 4. Remove the INTELLIGENT EYE sensor PCB. 1 Unfasten the 3 hooks and remove the INTELLIGENT EYE sensor PCB. INTELLIGENT EYE sensor PCB (R8092) 2 Disconnect the connector [S26] from the INTELLIGENT EYE sensor PCB.
Indoor Unit: FTXS09/12LVJU SiUS091133 Procedure Step Points 5. Remove the signal receiver PCB. 1 Unfasten the 3 hooks and remove the signal receiver PCB. Signal receiver PCB (R8090) 2 Disconnect the connector [S48] from the signal receiver PCB. [S48] (R8091) The display PCB is positioned on the rear side of the signal receiver unit. 6. Remove the display PCB. 1 The figure shows the connection of the wire harness for the display PCB.
SiUS091133 Procedure Step 2 Indoor Unit: FTXS09/12LVJU Points Unfasten the 4 hooks and remove the display PCB. Hook 3 (R10318) Disconnect the connector [S49] from the display PCB. LED 3 (Green) [S49] LED 2 (Yellow) LED 1 (Green) 7. Remove the control PCB. 1 Unfasten the lower 2 hooks of the control PCB. (R8096) Hook Control PCB (R8097) 2 The control PCB is also fixed by 2 upper hooks. When reassembling, be sure to fit all the 4 hooks.
Indoor Unit: FTXS09/12LVJU Procedure Step 3 SiUS091133 Points The figures show the names of the PCB component parts. [S1]: DC fan motor [S25]: INTELLIGENT EYE sensor PCB [S26]: control PCB [S32]: indoor heat exchanger thermistor [S41]: swing motors [S46]: display PCB [S47]: signal receiver PCB [S48] [S49]: control PCB [S32] [S1] Refer to page 14, 15 for detail.
SiUS091133 1.7 Indoor Unit: FTXS09/12LVJU Removal of Swing Motors Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step Points 1. Remove the swing motor for vertical blades. 1 Lift the indoor unit with a wooden base. (R10323) 2 Remove the screw behind the drain hose, and disconnect the drain hose.
Indoor Unit: FTXS09/12LVJU Procedure Step 4 SiUS091133 Detach the pivot from the interlock shaft for vertical blades with a flat screwdriver. Vertical blade Points Pivot Interlock shaft (R13092) 5 Remove the swing motor unit. Swing motor unit (R8126) 6 Detach the interlock shaft from the swing motor with a flat screwdriver. Interlock shaft (R8127) 7 Remove the vertical blade interlock with a flat screwdriver.
SiUS091133 Procedure Step 8 Indoor Unit: FTXS09/12LVJU Points Remove the 2 screws. Screw (R13573) 9 Remove the swing motor for vertical blades. 10 Disconnect the connector.
Indoor Unit: FTXS09/12LVJU SiUS091133 Procedure Step 2. Remove the swing motors for horizontal blades. 1 Remove the screw and remove the swing motors for horizontal blades. Points Connector for lower blade (red) Screw Connector for upper blade (white) (R8131) Caution When reassembling, do not confuse the installing order of the 2 motors and the colors of the connectors. If you set the connectors or motors opposite, the horizontal blades do not move smoothly or noise may be heard.
SiUS091133 1.8 Indoor Unit: FTXS09/12LVJU 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. Procedure Step Points 1. Disconnect the refrigerant piping. 1 Remove the screws which fix the indoor heat exchanger to the installation plate. Preparation Remove the electrical box according to the “Removal of Electrical Box”. (R8103) 2 Lift the indoor unit with a wooden base.
Indoor Unit: FTXS09/12LVJU Procedure Step 2. Remove the indoor heat exchanger. 1 Detach the indoor unit from the installation plate. 2 SiUS091133 Points Piping fixture Unfasten the hook of the piping fixture at the back of the indoor unit. Remove the piping fixture. (R10622) 3 Widen the auxiliary piping. (R17120) 4 Remove the 2 screws on the left side. Caution When removing or reassembling the indoor heat exchanger, be sure to wear gloves or wrap the indoor heat exchanger with cloth.
SiUS091133 Procedure Step 5 Indoor Unit: FTXS09/12LVJU Upper hook 6 Points Unfasten the upper hook on the right side with a flat screwdriver. After unfastening the lower hooks, lift up the indoor heat exchanger by its right side. (R13138) When reassembling the indoor heat exchanger, make sure that the right hooks (upper and lower) are fastened. Indoor heat exchanger Lower hook (R13139) 7 Remove the indoor heat exchanger.
Indoor Unit: FTXS09/12LVJU 1.9 SiUS091133 Removal of Fan Motor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step Points 1. Remove the right side plate. Preparation Remove the indoor heat exchanger according to the “Removal of Indoor Heat Exchanger”. (R8112) 1 Remove the 2 screws and remove the right side plate. Right side plate (R13502) (R8114) 2 Release the fan motor wire harness from the hook.
SiUS091133 Procedure Step 3 Indoor Unit: FTXS09/12LVJU Points Remove the 2 screws of the fan motor fixing plate. Fan motor fixing plate (R8116) 4 Unfasten the hook of the fan motor fixing plate and remove the plate. (R8117) (R8118) 2. Remove the fan motor. 1 Dislocate the fan rotor by sliding it to the right.
Indoor Unit: FTXS09/12LVJU Procedure Step 2 SiUS091133 Loosen the lock screw and remove the fan motor. Points When reassembling the fan motor and the fan rotor, provide as much as 5 mm (0.2 inch) of play between the side face of the rotor and the bottom frame. Lock screw Side face of rotor Fan motor Side face of bottom frame 5 mm (0.2 inch) (R2808) (R8120) 3 Press the bearing ASSY from outside. (R9582) (R8121) 4 Remove the bearing. (1) Insert the fan motor with approx. 5 mm (0.
SiUS091133 Indoor Unit: FTXS15/18/24LVJU 2. Indoor Unit: FTXS15/18/24LVJU 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. Procedure Step Points 1. Appearance features Warning Dangerous: High voltage A high voltage is applied to all the electric circuits of this product including thermistors.
Indoor Unit: FTXS15/18/24LVJU SiUS091133 Procedure Step 3. Remove the Titanium apatite photocatalytic airpurifying filters. 1 Remove the Titanium apatite photocatalytic air-purifying filter ASSY by unfastening the projections from the back of the air filter frame. Points The right and left filters are interchangeable. Air filter Titanium apatite photocatalytic air-purifying filter ASSY (R16262) 2 Remove the Titanium apatite photocatalytic air-purifying filter from its frame.
SiUS091133 Indoor Unit: FTXS15/18/24LVJU Procedure Step 4. Remove the front panel. 1 While opening the front panel further than it stops, release both the shafts. Points Front Panel (R16456) Slide the front panel from side to side to release each shaft. Align the right and left shafts with grooves in turn and insert them to the end when reassembling. (R9480) (R9481) 2 Remove the front panel.
Indoor Unit: FTXS15/18/24LVJU 2.2 SiUS091133 Removal of Front Grille Procedure Step Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points 1. Remove the service cover. 1 Remove the screw and remove the service cover. Service cover (R9483) You can remove the front grille without detaching the service cover. (R9484) 2. Remove the front grille. 1 Remove the 3 screws of the front grille.
SiUS091133 Procedure Step 2 Indoor Unit: FTXS15/18/24LVJU Points Remove the screw caps with a flat screwdriver. (R16266) 3 Remove the lower 3 screws. (R16686) 4 Unfasten the 3 hooks on the top of the front grille. The convex marks (...) on the front panel indicate the position of the hooks.
Indoor Unit: FTXS15/18/24LVJU Procedure Step 5 SiUS091133 Points When reassembling, make sure that all the 3 hooks are fastened as they were. Pull the upper part of the front grille out and lift the lower part up, and then remove the front grille.
SiUS091133 2.3 Indoor Unit: FTXS15/18/24LVJU Removal of Electrical Box Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step Points 1. Layout of the parts 1 2 Preparation Remove the front grille according to the “Removal of Front Grille.” 3 (R16270) 2. Remove the drip proof plate. 1 Remove the screw. The shape of the drip proof plate differs by the model.
Indoor Unit: FTXS15/18/24LVJU SiUS091133 Procedure Step Points 3. Release the ground wire and the indoor heat exchanger thermistor. 1 Cut the clamp (R16274) 2 Pull out and release the ground wire. (R16275) 3 The position of the indoor heat exchanger thermistor is slightly different depending on the model. Pull out the indoor heat exchanger thermistor. Be careful not to lose the clip of the thermistor.
SiUS091133 Indoor Unit: FTXS15/18/24LVJU Procedure Step 4. Remove the electrical box. 1 Remove the 4 screws and disconnect the connection wires on the terminal board. Remove the screw and remove the wire retainer. Points Terminal board 1 2 3 Wire retainer (R16277) 2 Disconnect the connector for the fan motor [S1] and release the harness from the hook. 1 2 [S1] 3 3 (R16278) Disconnect the connector for the swing motors [S41].
Indoor Unit: FTXS15/18/24LVJU Procedure Step 4 SiUS091133 Points Release the harness from the hooks. (R16280) 5 Remove the screw of the electrical box. Electrical box 1 2 3 (R16281) 6 Fit the back hook of the electrical box to the bottom frame when reassembling. Lift up the electrical box from the bottom frame and remove it.
SiUS091133 2.4 Indoor Unit: FTXS15/18/24LVJU Removal of PCBs Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step Points 1. Remove the signal receiver PCB. 1 Unfasten the hooks of the shield plate. Shield plate Preparation Remove the electrical box according to the “Removal of Electrical Box.” (R9506) 2 The shield plate has 2 hooks at the lower part also. Open the shield plate.
Indoor Unit: FTXS15/18/24LVJU Procedure Step 4 SiUS091133 Points Remove the screw of the terminal board. (R16285) 5 Remove the terminal board. (1 hook at the back) Terminal board (R16286) 6 Cut the clamp.
SiUS091133 Procedure Step 7 Indoor Unit: FTXS15/18/24LVJU Points When reassembling, make sure to hook the harness. Release the harness from the hook. Hook (R9514) 8 Push and unfasten the hook of the signal receiver unit. Hook Signal receiver unit (R13518) 9 Open the signal receiver unit. Unfasten the hook and remove the signal receiver unit.
Indoor Unit: FTXS15/18/24LVJU Procedure Step 10 SiUS091133 Unfasten the hook on the right of the signal receiver PCB. (Then the signal receiver PCB is lifted up.) Points Signal receiver PCB Signal receiver unit (R13519) 11 Remove the signal receiver PCB. (R9521) 12 Disconnect the connector.
SiUS091133 Indoor Unit: FTXS15/18/24LVJU Procedure Step Points 2. Remove the INTELLIGENT EYE sensor PCB. 1 Unfasten the 2 hooks on the right and then the 2 hooks on the left. Remove the INTELLIGENT EYE sensor ASSY. Hook Hook INTELLIGENT EYE sensor ASSY (R9523) (R9524) 2 When reassembling, set the sensor at the position where it “clicks”. Otherwise, the sensor is not completely set. Remove the sensor from the shield plate.
Indoor Unit: FTXS15/18/24LVJU Procedure Step 3 SiUS091133 Points Remove the shield plate by unfastening the 2 hooks. Hook INTELLIGENT EYE sensor PCB Shield plate (rear) (R9526) 4 Disconnect the connector. [S36]: control PCB [S36] (R9527) 3. Remove the display PCB. 1 Unfasten the 4 hooks.
SiUS091133 Procedure Step 2 Indoor Unit: FTXS15/18/24LVJU Points Lift up the display PCB. (R9529) 3 Release the harness from the hook. Hook (R9530) 4 Disconnect the connector.
Indoor Unit: FTXS15/18/24LVJU SiUS091133 Procedure Step 4. Remove the control PCB. 1 Unfasten the 3 hooks. Lift up and remove the control PCB. Points Control PCB Hook Hook (R9517) 2 Pull out the ground wire from the terminal board.
SiUS091133 Procedure Step 3 Indoor Unit: FTXS15/18/24LVJU Points Pull out the terminals from the terminal board. Terminal (R9519) [S1] : DC fan motor [S25] : INTELLIGENT EYE sensor PCB [S32] : indoor heat exchanger thermistor [S41] : swing motors [S46] : display PCB [S47] : signal receiver PCB Refer to page 17 for detail.
Indoor Unit: FTXS15/18/24LVJU 2.5 SiUS091133 Removal of Horizontal Blades / Swing Motors Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step Points 1. Remove the horizontal blades. 1 Hold the indoor unit up with something sturdy such as a piece of wood. Horizontal blade (R9568) 2 Release the shafts in turn.
SiUS091133 Indoor Unit: FTXS15/18/24LVJU Procedure Step Points inner left (R9538) right Horizontal blade (R9535) 3 Remove both the horizontal blades (upper and lower) in the same way. Remove the horizontal blade.
Indoor Unit: FTXS15/18/24LVJU Step SiUS091133 Procedure Points 2. Remove the air outlet ASSYs. 1 Remove the air outlet ASSYs by pushing the 2 hooks at the back of each. (R16687) The 3 air outlet ASSYs are bound with sealing materials. (R16688) 3. Remove the fan guards. 1 Unfasten the 4 lower hooks and the 2 upper hooks and remove the fan guard. Remove the other 2 fan guards likewise.
SiUS091133 Indoor Unit: FTXS15/18/24LVJU Procedure Step Points 4. Remove the swing motors for horizontal blades. 1 Release the interlock rod. Interlock rod (R9546) 2 Remove the screw at the rear of the indoor unit. (R16296) 3 Remove the 2 screws (front and rear).
Indoor Unit: FTXS15/18/24LVJU Procedure Step 4 SiUS091133 Points Pull out the drain hose, then remove the swing motor unit. Swing motor unit Drain hose (R16298) 5 Remove the screw at the center. (R9548) 6 Remove the 2 pivots.
SiUS091133 Procedure Step 7 Indoor Unit: FTXS15/18/24LVJU Remove the swing motors. Points Swing motor (upper blade) Swing motor (lower blade) (R16079) 8 Disconnect the connector to remove the swing motor. Caution When reassembling, do not confuse the installing order of the 2 motors and the colors of the connectors. If you set the connectors or motors opposite, the horizontal blades do not move smoothly or noise may be heard. (1) Set the swing motor of the upper blade first.
Indoor Unit: FTXS15/18/24LVJU Procedure Step 2 SiUS091133 Points Remove the interlock rod (2) with pliers. Interlock rod (2) (R9553) (R9554) 3 Remove the interlock rod (1).
SiUS091133 Procedure Step 4 Indoor Unit: FTXS15/18/24LVJU Points Remove the 2 screws. (R9556) 5 Remove the swing motor for the vertical blade. Swing motor for vertical blade (R9557) 6 Disconnect the connector.
Indoor Unit: FTXS15/18/24LVJU 2.6 SiUS091133 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. Procedure Step Points 1. Disconnect the refrigerant piping. 1 Hold the indoor unit up with a piece of wood etc. Preparation Remove the electrical box according to the “Removal of Electrical Box”. Caution If the refrigerant leaks, repair the leakage, then collect all refrigerant from the unit.
SiUS091133 Indoor Unit: FTXS15/18/24LVJU Procedure Step Points 2. Remove the piping fixture. 1 Detach the indoor unit from the installation plate. (R16524) 2 Push the bottom frame. Bottom frame (R16309) 3 Release the piping fixture.
Indoor Unit: FTXS15/18/24LVJU Procedure Step 4 SiUS091133 Points Remove the piping fixture. (R9574) 3. Remove the indoor heat exchanger. 1 Widen the auxiliary piping. (R9575) 2 Remove the 2 screws on the left side. Caution When removing or reassembling the indoor heat exchanger, be sure to wear gloves or wrap the indoor heat exchanger with cloths. (You may be injured by the fins.
SiUS091133 Procedure Step 3 Indoor Unit: FTXS15/18/24LVJU Points Push the hook on the right side and unfasten it. (R16310) 4 Press the right side of the indoor heat exchanger, and lift it up from the left side. Lift up and remove the indoor heat exchanger.
Indoor Unit: FTXS15/18/24LVJU 2.7 SiUS091133 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. Procedure Step Points 1. Remove the right side plate. 1 Remove the 2 screws. Right side plate (R16306) 2 Lift the right side plate and remove it. (R16307) 2. Remove the fan rotor. 1 Remove the screw of the fan motor fixing plate.
SiUS091133 Procedure Step 2 Indoor Unit: FTXS15/18/24LVJU Points Remove the fan motor fixing plate. (R16973) 3 Release the fan motor harness from the hook. (R16304) 4 Loosen the screw of the fan rotor.
Indoor Unit: FTXS15/18/24LVJU Procedure Step 5 SiUS091133 Points When reassembling the fan motor and the fan rotor, provide as much as 5 mm (0.2 inch) of play between the side face of the rotor and the bottom frame. Remove the fan motor. Fan motor Side face of rotor Side face of bottom frame 5 mm (0.2 inch) (R2808) (R16305) 6 Remove the fan rotor. (R9582) (R9584) 219 (1) Insert the fan motor with approx. 5 mm (0.2 inch) left. (2) Tighten the screw until it stops.
SiUS091133 2.8 Indoor Unit: FTXS15/18/24LVJU Removal of Vertical Blade ASSYs Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step Unfasten the 2 hooks of each vertical blade ASSY. Remove the 3 vertical blade ASSYs. Points When reassembling, connect the 3 vertical blade ASSYs. Fasten the hooks at the connecting points. (R16504) Each vertical blade ASSY is united with a drain pan ASSY.
Indoor Unit: FTXS30/36LVJU SiUS091133 3. Indoor Unit: FTXS30/36LVJU 3.1 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. Procedure Step Points 1. Appearance features Warning Dangerous: High voltage A high voltage is applied to all the electric circuits of this product including thermistors.
SiUS091133 Indoor Unit: FTXS30/36LVJU Procedure Step 3. Remove the Titanium apatite photocatalytic airpurifying filters. 1 Remove the Titanium apatite photocatalytic air-purifying filter ASSY by unfastening the projections from the back of the air filter frame. Points The 3 filters are interchangeable. Air filter Titanium apatite photocatalytic air-purifying filter ASSY (R9477) 2 Remove the Titanium apatite photocatalytic air-purifying filter from its frame.
Indoor Unit: FTXS30/36LVJU SiUS091133 Procedure Step 4. Remove the front panel. 1 While opening the front panel further than it stops, release both the shafts. Points Front Panel (R9479) Slide the front panel from side to side to release each shaft. Align the right and left shafts with grooves in turn and insert them to the end when reassembling. (R9480) (R9481) 2 Remove the front panel.
SiUS091133 3.2 Indoor Unit: FTXS30/36LVJU Removal of Front Grille Procedure Step Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points 1. Remove the service cover. 1 Remove the screw and remove the service cover. Service cover (R9483) You can remove the front grille without detaching the service cover. (R9484) 2. Remove the front grille. 1 Remove the 3 screws of the front grille.
Indoor Unit: FTXS30/36LVJU Procedure Step 2 SiUS091133 Points Remove the screw caps with a flat screwdriver. (R16266) 3 Remove the lower 3 screws. (R9488) 4 The Illustration shows the left fixture. Remove the 3 front grille fixtures.
SiUS091133 Indoor Unit: FTXS30/36LVJU Procedure Step Points (R9490) 5 Unfasten the 4 hooks on the top of the front grille. The convex marks (...) on the front panel indicate the position of the hooks.
Indoor Unit: FTXS30/36LVJU Procedure Step 6 SiUS091133 Points When reassembling, make sure that all the 4 hooks are fastened as they were. Pull the upper part of the front grille out and lift the lower part up, and then remove the front grille.
SiUS091133 3.3 Indoor Unit: FTXS30/36LVJU Removal of Electrical Box Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step Points 1. Layout of the parts Preparation Remove the front grille according to the “Removal of Front Grille.” 3 1 2 (R9493) 2. Remove the drip proof plate. 1 Remove the screw. 1 2 2 Remove the drip proof plate from the indoor heat exchanger.
Indoor Unit: FTXS30/36LVJU SiUS091133 Procedure Step Points 3. Release the ground wire and the indoor heat exchanger thermistor. 1 Remove the screw and release the ground wire. 1 2 3 Ground wire (R16976) 2 Be careful not to lose the clip of the thermistor. Pull out the indoor heat exchanger thermistor. 1 2 3 Clip (R11268) Indoor heat exchanger thermistor 4. Remove the electrical box. 1 Remove the 4 screws and disconnect the connection wires on the terminal board.
SiUS091133 Procedure Step 2 Indoor Unit: FTXS30/36LVJU Points Disconnect the connector for the fan motor [S1] and release the harness from the hook. 1 2 [S1] 3 (R9500) Release the ferrite core. Ferrite core 4 3 (R9501) Disconnect the connector for the swing motors [S41].
Indoor Unit: FTXS30/36LVJU Procedure Step 5 SiUS091133 Points Release the harness from the hooks. (R9503) 6 Remove the screw of the electrical box. Electrical box 1 2 3 (R9504) 7 Fit the back hook of the electrical box to the bottom frame when reassembling. Lift up the electrical box from the bottom frame and remove it.
SiUS091133 3.4 Indoor Unit: FTXS30/36LVJU Removal of PCBs Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step Points 1. Remove the signal receiver PCB. 1 Unfasten the hooks of the shield plate. Shield plate (R9506) 2 The shield plate has 2 hooks at the lower part also. Open the shield plate. Hook (R9508) (R9507) 3 Remove the shield plate.
Indoor Unit: FTXS30/36LVJU Procedure Step 4 SiUS091133 Points Remove the screw of the terminal board. (R9511) 5 Remove the terminal board. (1 hook at the back) Terminal board (R9512) 6 Cut the clamp.
SiUS091133 Procedure Step 7 Indoor Unit: FTXS30/36LVJU Points When reassembling, make sure to hook the harness. Release the harness from the hook. Hook (R9514) 8 Push and unfasten the hook of the signal receiver unit. Hook Signal receiver unit (R13518) 9 Open the signal receiver unit. Unfasten the hook and remove the signal receiver unit.
Indoor Unit: FTXS30/36LVJU Procedure Step 10 SiUS091133 Unfasten the hook on the right of the signal receiver PCB. (Then the signal receiver PCB is lifted up.) Points Signal receiver PCB Signal receiver unit (R13519) 11 Remove the signal receiver PCB. (R9521) 12 Disconnect the connector.
SiUS091133 Indoor Unit: FTXS30/36LVJU Procedure Step Points 2. Remove the INTELLIGENT EYE sensor PCB. 1 Unfasten the 2 hooks on the right and then the 2 hooks on the left. Remove the INTELLIGENT EYE sensor ASSY. Hook Hook INTELLIGENT EYE sensor ASSY (R9523) (R9524) 2 When reassembling, set the sensor at the position where it “clicks”. Otherwise, the sensor is not completely set. Remove the sensor from the shield plate.
Indoor Unit: FTXS30/36LVJU Procedure Step 3 SiUS091133 Points Remove the shield plate by unfastening the 2 hooks. Hook INTELLIGENT EYE sensor PCB Shield plate (rear) (R9526) 4 Disconnect the connector.
SiUS091133 Indoor Unit: FTXS30/36LVJU Procedure Step Points 3. Remove the display PCB. 1 Unfasten the 4 hooks. Display PCB (R9528) 2 Lift up the display PCB. (R9529) 3 Release the harness from the hook.
Indoor Unit: FTXS30/36LVJU SiUS091133 Procedure Step 4 Points Disconnect the connector. [S49]: control PCB [S49] SW1 (R9531) 3P224121-1 BZ PbF LED2 LED1 S49 LED3 [S49] (R13520) 4. Remove the control PCB. 1 Unfasten the 3 hooks. Lift up and remove the control PCB. Control PCB Hook Hook (R9517) 2 Pull out the ground wire from the terminal board.
SiUS091133 Procedure Step 3 Indoor Unit: FTXS30/36LVJU Points Pull out the terminals from the terminal board. Terminal (R9519) [S1] : DC fan motor [S25] : INTELLIGENT EYE sensor PCB [S32] : indoor heat exchanger thermistor [S41] : swing motors [S46] : display PCB [S47] : signal receiver PCB Refer to page 17 for detail.
Indoor Unit: FTXS30/36LVJU 3.5 SiUS091133 Removal of Horizontal Blades / Swing Motors Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step Points 1. Remove the horizontal blades. 1 Hold the indoor unit up with a piece of wood etc. Horizontal blade (R9568) 2 Remove the screw at the rear of the indoor unit. 3 Remove the 2 screws (front and rear).
SiUS091133 Procedure Step 4 Indoor Unit: FTXS30/36LVJU Points Removing order (right left inner right inner left) Release the shafts in turn.
Indoor Unit: FTXS30/36LVJU SiUS091133 Procedure Step Points inner left (R9538) 5 Remove both the horizontal blades (upper and lower) in the same way. Remove the horizontal blade. (R9539) 2. Remove the fan guards. 1 Remove the sealing material (horizontal). (R14469) 2 Remove the sealing material (vertical). Also remove the other sealing material on the right.
SiUS091133 Procedure Step 3 Indoor Unit: FTXS30/36LVJU Points Remove the center and right air outlet ASSY likewise. Remove the left air outlet ASSY by pushing the 2 hooks at the back. Air outlet ASSY (R14471) Hook (R9543) 4 Unfasten the 4 lower hooks and the 2 upper hooks and remove the fan guard. Fan guard Remove the other 2 fan guards likewise.
Indoor Unit: FTXS30/36LVJU SiUS091133 Procedure Step Points 3. Remove the swing motors for horizontal blades. 1 Release the interlock rod. Interlock rod (R9546) 2 Pull out the drain hose, then remove the swing motor unit. Swing motor unit Drain hose (R13579) 3 Remove the screw at the center.
SiUS091133 Procedure Step 4 Indoor Unit: FTXS30/36LVJU Points Remove the 2 pivots. (R9549) 5 Remove the swing motors. Swing motor (upper blade) Swing motor (lower blade) (R9550) 6 Disconnect the connector to remove the swing motor. Caution When reassembling, do not confuse the installing order of the 2 motors and the colors of the connectors. If you set the connectors or motors opposite, the horizontal blades do not move smoothly or the noise may be heard.
Indoor Unit: FTXS30/36LVJU SiUS091133 Procedure Step Points 4. Remove the swing motor for vertical blades. 1 Remove the link cover. Link cover (R9552) 2 Remove the interlock rod (2) with pliers.
SiUS091133 Procedure Step 3 Indoor Unit: FTXS30/36LVJU Points Remove the interlock rod (1). Interlock rod (1) 4 Remove the 2 screws. 5 Remove the swing motor for the vertical blade.
Indoor Unit: FTXS30/36LVJU Procedure Step 6 SiUS091133 Points Disconnect the connector.
SiUS091133 3.6 Removal of Fan Motor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step 1 Indoor Unit: FTXS30/36LVJU Points Loosen the screw of the fan motor from the air outlet. (R9559) 2 Remove the screw of the fan motor fixing plate.
Indoor Unit: FTXS30/36LVJU Procedure Step 3 SiUS091133 Points Unfasten the hook at the front and remove the fan motor fixing plate. Hook (R9561) (R9562) 4 Release the harness from the hook, and remove the screw of the motor mounting plate.
SiUS091133 Procedure Step 5 Indoor Unit: FTXS30/36LVJU Points When reassembling the fan motor and the fan rotor, provide as much as 5 mm (0.2 inch) of play between the side face of the rotor and the bottom frame. Remove the motor mounting plate. Side face of rotor Motor mounting plate 6 (R9564) Side face of bottom frame 5 mm (0.2 inch) (R2808) Remove the fan motor. Fan motor (R9582) (R9565) Removal Procedure (1) Insert the fan motor with approx. 5 mm (0.2 inch) left.
Indoor Unit: FTXS30/36LVJU Procedure Step 7 SiUS091133 Points When reassembling, engage the vibration absorber completely. Remove the vibration absorber.
SiUS091133 3.7 Indoor Unit: FTXS30/36LVJU 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. Procedure Step Points 1. Disconnect the refrigerant piping. 1 Hold the indoor unit up with a piece of wood etc. Preparation Remove the electrical box according to the “Removal of Electrical Box”. Caution If the refrigerant leaks, repair the leakage, then collect all refrigerant from the unit.
Indoor Unit: FTXS30/36LVJU SiUS091133 Procedure Step Points 2. Remove the piping fixture. 1 Detach the indoor unit from the installation plate. (R9571) 2 Push the bottom frame. Bottom frame (R9572) 3 Release the piping fixture.
SiUS091133 Procedure Step 4 Indoor Unit: FTXS30/36LVJU Points Remove the piping fixture. (R9574) 3. Remove the indoor heat exchanger. 1 Widen the auxiliary piping. (R9575) 2 Remove the 2 screws on the left side. Caution When removing or reassembling the indoor heat exchanger, be sure to wear gloves or wrap the indoor heat exchanger with cloths. (You may be injured by the fins.
Indoor Unit: FTXS30/36LVJU SiUS091133 Procedure Step 3 Push the hook on the right side and unfasten it. 4 Lift up and remove the indoor heat exchanger. Points (R13581) Press the right side of the indoor heat exchanger, and lift it up from the left side.
SiUS091133 3.8 Indoor Unit: FTXS30/36LVJU Removal of Fan Rotor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step Points 1. Remove the right side plate. 1 Remove the 2 screws. Right side plate 2 (R9579) Lift the right side plate and remove it. (R9580) 2. Remove the fan rotor. 1 Remove the screw of the fan motor fixing plate. (R17121) 2 Remove the fan motor fixing plate.
Indoor Unit: FTXS30/36LVJU Procedure Step 3 SiUS091133 Loosen the screw of the fan rotor. Points Fan rotor (R9648) 4 When reassembling the fan motor and the fan rotor, provide as much as 5 mm (0.2 inch) of play between the side face of the rotor and the bottom frame. Remove the fan motor. Fan motor Side face of rotor Side face of bottom frame 5 mm (0.2 inch) (R2808) (R9583) 5 Remove the fan rotor. (R9582) (R9584) 259 (1) Insert the fan motor with approx. 5 mm (0.2 inch) left.
SiUS091133 3.9 Indoor Unit: FTXS30/36LVJU Removal of Vertical Blade ASSYs Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step Unfasten the 2 hooks of each vertical blade ASSY. Remove the 3 vertical blade ASSYs. Points When reassembling, connect the 3 vertical blade ASSYs. Fasten the hooks at the connecting points. (R16979) Each vertical blade ASSY is united with a drain pan ASSY.
Outdoor Unit: RXS09/12LVJU SiUS091133 4. Outdoor Unit: RXS09/12LVJU 4.1 Removal of Outer Panels / Fan Motor Procedure Step Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points 1. Appearance features (R7186) Take care not to cut your finger by the fins of the outdoor heat exchanger. (R16044) When reassembling, make sure to fit the 5 hooks. 2. Remove the panels. 1 Remove the screw of the stop valve cover.
SiUS091133 Outdoor Unit: RXS09/12LVJU Procedure Step 2 Remove the 3 screws and lift the top panel. 3 Remove the drip proof cover. 4 Remove the 4 screws and remove the discharge grille.
Outdoor Unit: RXS09/12LVJU SiUS091133 Procedure Step Points The discharge grille has 4 hooks. (R16982) 5 Remove the 8 screws of the front panel. Front panel 6 (R16983) The front panel has 4 hooks. Unfasten the hooks. Pull and remove the front panel.
SiUS091133 Outdoor Unit: RXS09/12LVJU Procedure Step Points Nut size: M6 3. Remove the fan motor. 1 Remove the nut of the outdoor fan. 10 mm (0.39 inch) (R16985) Outdoor fan 2 (R16922) When reassembling, align the mark of the outdoor fan with the D-cut section of the motor shaft. Remove the outdoor fan. D-cut (R11828) 3 Release the outdoor temperature thermistor.
Outdoor Unit: RXS09/12LVJU Procedure Step 4 SiUS091133 Points Disconnect the connector for the fan motor [S70]. (R16987) [S70] 5 Release the fan motor lead wire from the hook.
SiUS091133 Procedure Step 6 Outdoor Unit: RXS09/12LVJU Points Remove the screw and remove the fan motor fixing frame. Fan motor fixing frame (R11833) (R12314) When reassembling, fit the lower hooks into the bottom frame.
Outdoor Unit: RXS09/12LVJU Procedure Step 7 SiUS091133 Points When reassembling, put the fan motor lead wire through the back of the fan motor so as not to be entangled with the outdoor fan. Open the 2 hooks and release the fan motor lead wire. (R11835) Lead wire Outdoor fan (R3249) 8 Remove the 4 screws and remove the fan motor. Fan motor (R12311) When reassembling, pass the connecting wires through the conduit and secure them with a lock nut.
SiUS091133 Procedure Step 2 Outdoor Unit: RXS09/12LVJU Remove the 4 screws on the right side panel. Points Right side panel (R16990) 3 Remove the screw near the stop valves. (R16991) 4 When reassembling, make sure to fit the hook. Unfasten the hook on the rear side.
Outdoor Unit: RXS09/12LVJU Procedure Step 5 SiUS091133 Points When reassembling, make sure to fit the hook. Lift up the right side panel and remove it. Hook (R16992) 6 Lift up the guard net and remove it.
SiUS091133 4.2 Removal of Electrical Box Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step 1 Outdoor Unit: RXS09/12LVJU Points Disconnect the connector for the overload protector [S40]. Preparation Remove the outer panels and disconnect the connector for the fan motor according to the “Removal of Outer Panels / Fan Motor”. [S40] (R16924) 2 Disconnect the connector for the fourway valve coil [S80].
Outdoor Unit: RXS09/12LVJU Procedure Step 4 SiUS091133 Points Disconnect the relay connector for the compressor. (R16927) 5 Disconnect the connector for the electronic expansion valve coil [S20]. [S20] (R16928) 6 Cut the clamp.
SiUS091133 Procedure Step 7 Outdoor Unit: RXS09/12LVJU Points Be careful not to lose the clip for the thermistor. Pull out the outdoor heat exchanger thermistor. Clip Outdoor heat exchanger thermistor (R16995) (R3264) 8 Be careful not to lose the clip for the thermistor. Release the discharge pipe thermistor. Clip (R12279) Discharge pipe thermistor 9 Lift and remove the electrical box.
Outdoor Unit: RXS09/12LVJU 4.3 SiUS091133 Removal of PCBs Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step Points You can remove the main PCB when you disconnect the lead wires on the terminal board without removing the electrical box. 1. Remove the main PCB and the forced operation button PCB. 1 Layout of the main PCB Main PCB Forced operation button PCB (R16997) 2 Remove the screw on the terminal board.
SiUS091133 Procedure Step 3 Outdoor Unit: RXS09/12LVJU Points Release the 2 ground wires. Ground wire (R16998) 4 Be careful of a sharp protrusion at the back of the forced operation button PCB. Pull out the forced operation button PCB. Disconnect the connector [S110] to remove the forced operation button PCB. [S110] Forced operation button PCB (R16932) 5 Cut the clamp.
Outdoor Unit: RXS09/12LVJU Procedure Step 6 SiUS091133 Points Release the harness. (R16934) 7 Cut the clamps at the 2 locations. (R16935) 8 Disconnect the connector for the filter PCB [S10].
SiUS091133 Procedure Step 9 Outdoor Unit: RXS09/12LVJU Disconnect the connector for the forced operation button PCB [S100]. Points [S100] (R16937) 10 Disconnect the connector for the filter PCB [HL3] [HN3]. [HN3] [HL3] (R16938) 11 Release the harnesses from the hook.
Outdoor Unit: RXS09/12LVJU Procedure Step 12 SiUS091133 Points Release the harness for the outdoor temperature thermistor. (R11865) 13 Remove the 6 screws. (R16940) 14 Unfasten the 4 hooks and remove the main PCB.
SiUS091133 Outdoor Unit: RXS09/12LVJU Procedure Step Points Refer to page 22 for detail. [S100] [HN3] [HL3] [S80] [S20] [S40] [S10] [HL3] [HN3]: filter PCB [S20]: electronic expansion valve coil [S40]: overload protector [S70]: fan motor [S80]: four-way valve coil [S90]: thermistors [S100]: forced operation button PCB [S70] [S90] [S10] (R11868) 2. Remove the filter PCB. 1 Release the harnesses from the hook. Filter PCB 2 (R17000) Cut the clamp.
Outdoor Unit: RXS09/12LVJU Procedure Step 3 SiUS091133 Points Release the harnesses from the hook. (R16944) 4 Release the harnesses from the 2 hooks. 5 Remove the screw.
SiUS091133 Procedure Step 6 Outdoor Unit: RXS09/12LVJU Points Unfasten the 2 hooks. Filter PCB 7 Lift and pull out the filter PCB. 8 Layout of the filter PCB (R17003) (R17004) Refer to page 22 for detail.
Outdoor Unit: RXS09/12LVJU 4.4 SiUS091133 Removal of Reactor / Partition Plate Procedure Step 1. Remove the reactor. 1 Remove the screw and remove the reactor. Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points Preparation Remove the outer panels according to the “Removal of Outer Panels / Fan Motor”. Remove the electrical box according to the “Removal of Electrical Box”.
SiUS091133 Outdoor Unit: RXS09/12LVJU Procedure Step 2. Remove the partition plate. 1 Remove the 2 screws. Points Partition plate (R12273) 2 When reassembling, fit the lower hooks into the bottom frame. The partition plate has 2 hooks on the lower side. Lift and pull the partition plate to remove.
Outdoor Unit: RXS09/12LVJU 4.5 Removal of Sound Blankets Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step 1 SiUS091133 Points Since the piping ports are torn easily, remove the sound blankets carefully. Remove the sound blanket (top). Sound blanket (top) (R11884) 2 Untie the string and open the sound blanket (outer). Sound blanket (outer) 3 (R11885) Lift and remove the sound blanket (outer).
SiUS091133 Procedure Step 4 Outdoor Unit: RXS09/12LVJU Points Pull out the sound blanket (inner). Sound blanket (inner) (R11887) 5 Pull out the sound blanket (bottom).
Outdoor Unit: RXS09/12LVJU 4.6 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. Procedure Step 1 SiUS091133 Points Pull out the electronic expansion valve coil. Electronic expansion valve coil (R7233) 2 Remove the terminal cover.
SiUS091133 Procedure Step Disconnect the lead wires of the compressor. Points Red (U) W V Yellow (V) U 3 Outdoor Unit: RXS09/12LVJU Blue (W) (R7235) 4 Remove the screw and remove the four-way valve coil. Four way valve coil Warning Be careful not to get yourself burnt with the pipes and other parts that are heated by the gas brazing machine. Warning If the refrigerant gas leaks during work, ventilate the room. (If the refrigerant gas is exposed to flames, toxic gas may be generated.
Outdoor Unit: RXS09/12LVJU Step Before working, make sure that the refrigerant gas is empty in the circuit. Be sure to apply nitrogen replacement when heating up the brazed part. 6 Heat up the brazed part and withdraw the piping with pliers. SiUS091133 Procedure Points In case of difficulty with gas brazing machine 1. Disconnect the brazed part where is easy to disconnect and restore. 2. Cut pipes on the main unit with a tube cutter in order to make it easy to disconnect.
SiUS091133 4.7 Removal of Compressor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step 1 Outdoor Unit: RXS09/12LVJU Points Remove the 2 nuts of the compressor. Warning Be careful not to get yourself burnt with pipes and other parts that are heated by the gas brazing machine. Warning If the refrigerant gas leaks during work, ventilate the room.
Outdoor Unit: RXS09/12LVJU Procedure Step 3 SiUS091133 Points Heat up the brazed part of the suction side and disconnect it. Note: Never use a metal saw to cut pipes because the sawdust may enter the circuit. When withdrawing the pipes, be careful not to pinch them firmly with pliers. The pipes may get deformed. Suction side (R12032) 4 Lift the compressor up and remove it. Provide a protective sheet or a steel plate so that the brazing flame cannot influence peripheries.
SiUS091133 Outdoor Unit: RXS15/18LVJU 5. Outdoor Unit: RXS15/18LVJU 5.1 Removal of Outer Panels Procedure Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step 1 Warning Remove the 4 screws and remove the top panel. Points Take care not to cut your finger by the fins of the outdoor heat exchanger. Top panel (R16754) 2 Slide the discharge grille upward and remove it. Remove the 4 screws and remove the discharge grille.
Outdoor Unit: RXS15/18LVJU Procedure Step 3 SiUS091133 Points Remove the 6 screws of the front panel. Front panel (R16757) 4 Unfasten the right side hooks. (R16759) 5 When reassembling, fit the left side of the front panel first. Unfasten the left side hooks. Remove the front panel.
SiUS091133 Procedure Step 6 Outdoor Unit: RXS15/18LVJU Points Remove the screw of the stop valve cover. Stop valve cover (R16761) 7 Pull down the stop valve cover to unfasten the hooks and remove it. (R16762) The stop valve cover has 6 hooks.
Outdoor Unit: RXS15/18LVJU 5.2 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. Procedure Step 1 SiUS091133 Remove the drip proof cover. Points Preparation Remove the top panel and the front panel according to the “Removal of Outer Panels”. Drip proof cover (R17049) 2 Disconnect the connector for the fan motor [S70]. [S70] Ferrite core 3 Release the clamp from the partition plate.
SiUS091133 Outdoor Unit: RXS15/18LVJU Procedure Step Points (R16764) 4 Release the fan motor lead wire from the groove and the 2 hooks of the partition plate. (R16796) (R16797) 5 Remove the nut of the outdoor fan. Nut size: M6 Outdoor fan 10 mm (0.
Outdoor Unit: RXS15/18LVJU Procedure Step 6 SiUS091133 Points When reassembling, align the mark of the outdoor fan with the D-cut section of the motor shaft. Remove the outdoor fan. (R16788) 7 Remove the 2 screws of the fan motor fixing frame. 8 Pull up the fan motor fixing frame to unfasten the 2 hooks at the bottom. 9 Remove the fan motor fixing frame.
SiUS091133 Procedure Step 10 Outdoor Unit: RXS15/18LVJU Points Open the hook and release the fan motor lead wire. Hook (R16954) 11 Remove the 4 screws and remove the fan motor.
Outdoor Unit: RXS15/18LVJU 5.3 Removal of Electrical Box Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step 1 SiUS091133 Remove the 2 screws of the protection plate. Points Protection plate When reassembling, pass the connecting wires through the conduit and secure them with a lock nut. 12 3 (R16955) 2 Remove the protection plate. Lock nut Conduit mounting plate (R16956) Conduit 1/2 inch (21.
SiUS091133 Procedure Step 4 5 Outdoor Unit: RXS15/18LVJU Remove the 2 screws of the conduit mounting plate. Points Conduit mounting plate Remove the conduit mounting plate. (R16780) 6 Remove the 2 screws and remove the ground wire. Ground wire (R16781) 7 Pull out the outdoor temperature thermistor.
Outdoor Unit: RXS15/18LVJU Procedure Step 8 SiUS091133 Points Remove the 4 screws of the right side panel. Right side panel 9 Unfasten the hooks and remove the right side panel. (R16957) When reassembling, insert the upper hook and the 2 lower hooks back into place. Hook (R16823) Hook 10 (R16824) Cut the clamp.
SiUS091133 Procedure Step 11 Outdoor Unit: RXS15/18LVJU Pull out the outdoor heat exchanger thermistor. Points Outdoor heat exchanger thermistor (R16819) 12 Disconnect the connector for the fan motor [S70]. [S70] Ferrite core 13 Release the clamp from the partition plate. (R16951) The ferrite core of the fan motor lead wire has a clamp.
Outdoor Unit: RXS15/18LVJU SiUS091133 Procedure Step Points (R16764) 14 Release the fan motor lead wire from the groove and the 2 hooks of the partition plate. (R16796) (R16797) 15 Disconnect the connector for the overload protector [S40].
SiUS091133 Procedure Step 16 Outdoor Unit: RXS15/18LVJU Points Pull out the clamp. (R16803) 17 Disconnect the connector for the electronic expansion valve coil [S20]. [S20] (R16798) 18 Pull out the clamp (2 locations).
Outdoor Unit: RXS15/18LVJU SiUS091133 Procedure Step Points (R16767) 19 Remove the wire saddle. Wire saddle 20 Disconnect the connector for the fourway valve coil [S80]. (R16800) When reassembling, insert the clamps of harnesses as below. [S80] [S40] [S80] [S20] (R14363) When reassembling, connect the connectors in the following order.
SiUS091133 Procedure Step 21 Outdoor Unit: RXS15/18LVJU Points Pull out the clamp. (R16802) 22 Disconnect the relay connector for the compressor. (R14312) 23 Release the harness of the relay connector from the wire saddle. (R14313) 24 Pull out the clamp from the partition plate.
Outdoor Unit: RXS15/18LVJU Procedure Step 25 SiUS091133 Disconnect the connector for the thermistors [S90]. Points [S90] (R16806) 26 When reassembling, pass the thermistor harness under the harnesses (HL2: blue, HN2: white) from the filter PCB. When reassembling, insert the clamp as below. Pull out the clamp. (R14315) 27 Remove the wire saddle.
SiUS091133 Procedure Step 28 Outdoor Unit: RXS15/18LVJU Points When reassembling, insert the 2 clamps into the bottom of the electrical box. Pull out the clamp (3 locations).
Outdoor Unit: RXS15/18LVJU Procedure Step 29 SiUS091133 Points Remove the screw. (R16771) 30 Remove the electrical box.
SiUS091133 5.4 Outdoor Unit: RXS15/18LVJU Removal of PCBs Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step 1. Remove the main PCB. 1 Disconnect the connector [S12] and pull out the clamp. Points [S12]: for [HL4] [HN4] on filter PCB [S12] Main PCB (R16959) 2 Disconnect the connector [S10].
Outdoor Unit: RXS15/18LVJU Procedure Step 3 SiUS091133 Points The compressor harness has a clamp. When reassembling, insert the clamp as below. Pull out the clamp. (R16775) Compressor harness (red, blue, yellow) (R16747) 4 Disconnect the connectors [HN3] and [HL3]. [HL3]: for [HL2] on filter PCB [HN3]: for [HN2] on filter PCB [HL3]: blue [HN3]: white (R16809) 5 When reassembling, insert the clamp as below. Pull out the clamp.
SiUS091133 Procedure Step 6 Outdoor Unit: RXS15/18LVJU Points Remove the 2 upper screws. (R16811) 7 Remove the lower screw. (R16812) 8 Lift the main PCB ASSY.
Outdoor Unit: RXS15/18LVJU Procedure Step 9 SiUS091133 Points Unfasten the 4 hooks at the bottom. (R16814) 10 Remove the 8 screws. (R14330) 11 Unfasten the 2 hooks. 12 Remove the main PCB. (R14331) [S80] [S70] [S10] [S12] [HN3] [HL3] 311 [S20] [S40] [S90] Refer to page 24 for detail.
SiUS091133 Outdoor Unit: RXS15/18LVJU Procedure Step Points 2. Remove the radiation fin. 1 Remove the 2 screws on the bottom of the electrical box. Electrical box (R14333) 2 Remove the radiation fin. Radiation fin (R14334) 3. Remove the filter PCB. 1 Remove the ground wire screw. Ground wire 2 Pull out the terminals from the terminal board.
Outdoor Unit: RXS15/18LVJU Procedure Step 3 SiUS091133 Points Pull out the clamp. (R16816) 4 Release the harnesses from the groove. (R16817) 5 Remove the 2 screws.
SiUS091133 Procedure Step 6 Outdoor Unit: RXS15/18LVJU Points Unfasten the 3 hooks of the filter PCB ASSY. (R16961) (R14367) 7 Remove the screw. (R14368) 8 Unfasten the 2 hooks.
Outdoor Unit: RXS15/18LVJU Procedure Step 9 SiUS091133 Points Refer to page 24 for detail. Remove the filter PCB.
SiUS091133 5.5 Outdoor Unit: RXS15/18LVJU Removal of Sound Blankets / Thermistors Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step Points 1. Remove the partition plate. 1 Remove the 2 screws. (R16773) 2 Remove the partition plate.
Outdoor Unit: RXS15/18LVJU SiUS091133 Procedure Step Points 2. Remove the sound blankets. 1 Remove the sound blanket (top upper). Sound blanket (top upper) (R16962) 2 Remove the sound blanket (top lower). Sound blanket (top lower) (R16783) 3 Remove the sound blanket (back).
SiUS091133 Procedure Step 4 Outdoor Unit: RXS15/18LVJU Remove the sound blanket (outer). Points Sound blanket (outer) Since the piping ports are torn easily, remove the sound blankets carefully. (R16776) 5 Remove the sound blanket (inner). Sound blanket (inner) 6 (R16778) Be careful not to lose the clip for the thermistor. Release the discharge pipe thermistor.
Outdoor Unit: RXS15/18LVJU Procedure Step 7 SiUS091133 Cut the clamp and pull out the outdoor heat exchanger thermistor.
SiUS091133 5.6 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. Procedure Step 1 Outdoor Unit: RXS15/18LVJU Remove the screw and remove the four-way valve coil. Four way valve Points Warning Be careful not to get yourself burnt with the pipes and other Four way parts that are heated by the gas valve coil brazing machine. Warning If the refrigerant gas leaks during work, ventilate the room.
Outdoor Unit: RXS15/18LVJU 5.7 Removal of Electronic Expansion Valve Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step 1 SiUS091133 Pull out the electronic expansion valve coil. Points Electronic expansion valve coil (R16751) 2 Remove the sheets of putty.
SiUS091133 Step Outdoor Unit: RXS15/18LVJU Procedure Points Before working, make sure that the refrigerant Electric expansion valve gas is empty in the circuit. Be sure to apply nitrogen replacement when heating up the brazed part. 3 Heat up the 2 brazed parts of the electronic expansion valve and remove it. Warning Use caution to avoid burning yourself with pipes and other parts that are heated by the gas brazing. Warning If the refrigerant gas leaks during work, immediately ventilate the room.
Outdoor Unit: RXS15/18LVJU 5.8 Removal of Compressor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step 1 SiUS091133 Points Remove the terminal cover. (R5301) Terminal cover (R5302) 2 Disconnect the lead wires of the compressor.
SiUS091133 Procedure Step 3 Outdoor Unit: RXS15/18LVJU Points Remove the putty. (R16963) 4 Remove the 2 nuts of the compressor. Warning Use caution to avoid burning yourself with pipes and other parts that are heated by the gas brazing Warning If the refrigerant gas leaks during work, immediately ventilate the room. If refrigerant gas is exposed to flames, toxic gas may be generated. (R10257) Before working, make sure that the refrigerant gas is empty in the circuit.
Outdoor Unit: RXS15/18LVJU Procedure Step 5 SiUS091133 Points Heat up the brazed part of the discharge side and disconnect it. Cautions for restoration 1. Restore the piping by nonoxidation brazing. 2. It is required to prevent the carbonization of the oil inside the four-way valve and the deterioration of the gaskets affected by heat. Keep below 120°C (248°F). Wrap the fourway valve with a wet cloth and provide water so that the cloth does not dry.
SiUS091133 Outdoor Unit: RXS24LVJU 6. Outdoor Unit: RXS24LVJU 6.1 Removal of Outer Panels Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step Points 1. Appearance features (R16578) 2. Remove the suction grille. 1 Unfasten the 2 hooks at the bottom first. Rear side The hooks are secured in the clearances of the outdoor heat exchanger fins.
Outdoor Unit: RXS24LVJU Procedure Step 3 SiUS091133 Points Remove the suction grille. (R6372) 3. Remove the top panel. 1 Remove the 4 screws on the back and the screw on the left side. Top panel (R6373) 2 Remove the 2 screws on the front and the screw on the right side panel.
SiUS091133 Procedure Step 3 Outdoor Unit: RXS24LVJU Points Lift the top panel and remove it. (R16580) 4. Remove the front panel (2). 1 Remove the 5 screws.
Outdoor Unit: RXS24LVJU Procedure Step 2 SiUS091133 Points Slide the front panel (2) downward to unfasten the hook. (R16582) 3 Remove the front panel (2).
SiUS091133 Step 5. Remove the right side panel. 1 Remove the 2 screws. Slide the right side panel downward to unfasten the 2 hooks on the rear side.
Outdoor Unit: RXS24LVJU Procedure Step 2 SiUS091133 Points Remove the right side panel. (R16730) 6. Remove the front panel (1). 1 Remove the 4 screws on the discharge grille. Remove the discharge grille and the outdoor fan first to remove the front panel (1). Front Panel (1) Discharge grille (R16587) 2 Pull the bottom of the discharge grille.
SiUS091133 Outdoor Unit: RXS24LVJU Procedure Step 3 Points Slide the discharge grille downward to unfasten the 2 hooks at the top. Hook (R16591) 4 Remove the discharge grille. 5 Remove the nut of the outdoor fan. (R16592) Nut size : M8 Outdoor fan 13 mm (0.51 inch) (R16736) 6 (R17005) Remove the 2 screws on the partition plate (1).
Outdoor Unit: RXS24LVJU Procedure Step 7 SiUS091133 Remove the screw at the bottom left of the front. Points Partition plate (1) (R16738) 8 Remove the screw at the bottom of the left side. (R16739) 9 Remove the screw at the bottom of the rear side.
SiUS091133 Procedure Step 10 Outdoor Unit: RXS24LVJU Points Lift the front panel (1) to unfasten the hook. Hook (R16740) 11 Remove the front panel (1). (R16741) Be sure to detach the front panel (1) carefully so as not to deform it.
Outdoor Unit: RXS24LVJU SiUS091133 Procedure Step 7. Remove the rear panel. 1 Remove the 2 screws, and remove the shield plate ASSY. Points Rear panel Shield plate ASSY (R16599) 2 Release the clamps of the connection wire. (R17009) 3 Remove the screws and detach the connection wires.
SiUS091133 Procedure Step 4 Outdoor Unit: RXS24LVJU Points Remove the screw on the partition plate (2). Rear panel Partition plate (2) (R17008) 5 Slide the partition plate (2) to the left, and remove it. Hook (R17007) 6 Remove the 3 screws on the wire fixing plate.
Outdoor Unit: RXS24LVJU Procedure Step 7 SiUS091133 Points Remove the wire fixing plate and the insulation. Insulation Wire fixing plate (R17011) 8 Release the holder of the outdoor temperature thermistor. The holder is secured in the clearances of the outdoor heat exchanger fins. Holder (R11151) 9 Release the harness of the outdoor temperature thermistor from the groove.
SiUS091133 Procedure Step 10 Outdoor Unit: RXS24LVJU Remove the 3 screws on the rear panel. Points Rear panel (R16699) 11 Remove the screw on the bottom frame. (R16700) 12 Remove the screw on the stop valve mounting plate.
Outdoor Unit: RXS24LVJU Procedure Step 13 SiUS091133 Points Lift the rear panel upward to unfasten the 2 hooks. Hook (R16702) 14 Remove the rear panel.
SiUS091133 6.2 Removal of Electrical Box Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step 1 Outdoor Unit: RXS24LVJU Remove the screw on the stop valve mounting plate. Points Electrical box Stop valve mounting plate (R16605) 2 Remove the screw on the partition plate (1).
Outdoor Unit: RXS24LVJU Procedure Step 3 SiUS091133 Points Remove the 2 screws to detach the ground wires. Ground wire (R16607) 4 Disconnect the connector for the fan motor [S70]. (R7008) 5 : When reassembling, do not use these 2 hooks. Release the fan motor lead wire from the 5 hooks.
SiUS091133 Procedure Step 6 Outdoor Unit: RXS24LVJU Points Disconnect the connectors of the front side. [S20]: electronic expansion valve coil [S40]: overload protector [S80]: four-way valve coil [S90]: thermistors (R5275) 7 The compressor lead wire is fixed on the partition plate (1) with a clamp. Clamp (R16704) 8 Release the clamp of the compressor relay harness with pliers.
Outdoor Unit: RXS24LVJU Procedure Step 9 SiUS091133 Points Disconnect the relay connector for the compressor. (R6469) 10 Slide the electrical box to the left to unfasten the hook on the right side of the box. Hook (R16705) 11 Lift up the electrical box and remove it.
SiUS091133 6.3 Removal of PCBs Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step 1 Outdoor Unit: RXS24LVJU Disconnect the connectors [S52] [S102] from the service monitor PCB. [S52] Points Preparation Remove the electrical box according to the "Removal of Electrical Box". [S102] Service monitor PCB (R16707) 2 Detach the 4 clamps with pliers and remove the service monitor PCB.
Outdoor Unit: RXS24LVJU Procedure Step 4 SiUS091133 Points Unfasten the hook on the right. (R5283) 5 Open the terminal board. (R16710) 6 Disconnect the harnesses from the terminal board.
SiUS091133 Procedure Step 7 Outdoor Unit: RXS24LVJU Disconnect the 2 harnesses for the reactor [HR1] [HR2]. Points [HR1] : White [HR2] : Blue [HR1] [HR2] Ferrite core The harness for [HR2] has a ferrite core. (R5286) 8 Remove the 3 screws of the main PCB. Main PCB (R5287) 9 Release the 4 hooks. Hook 10 Lift up and remove the main PCB. (R13524) Refer to page 26 for detail.
Outdoor Unit: RXS24LVJU 6.4 SiUS091133 Removal of Fan Motor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step 1 Remove the 2 lower screws first. 2 Then, remove the 2 upper screws. Points Preparation Remove the electrical box according to the "Removal of Electrical Box". Be sure to remove the lower screws first.
SiUS091133 6.5 Outdoor Unit: RXS24LVJU Removal of Coils / Thermistors Procedure Step 1. Remove the electronic expansion valve coil. 1 Pull the electronic expansion valve coil out. Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Points Electronic expansion valve coil (R11159) 2. Remove the four-way valve coil. 1 Remove the screw.
Outdoor Unit: RXS24LVJU Procedure Step 2 SiUS091133 Points Remove the four-way valve coil. Four way valve coil (R6458) 3. Remove the thermistors. 1 Pull out the outdoor heat exchanger thermistor. Outdoor heat exchanger thermistor (R11160) 2 Slightly open the sound blanket (outer).
SiUS091133 Procedure Step 3 Outdoor Unit: RXS24LVJU Points Remove the sound blanket (upper top). Sound blanket (upper top) (R7012) 4 Remove the discharge pipe thermistor.
Outdoor Unit: RXS24LVJU 6.6 Removal of Sound Blankets Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step 1 SiUS091133 Points Open the sound blanket (outer). Sound blanket (outer) (R16608) 2 The sound blanket is fragile. Carefully pass the discharge pipe through it. Remove the sound blanket (top upper).
SiUS091133 Outdoor Unit: RXS24LVJU Procedure Step 3 Remove the screw and slightly push the partition plate (1) to the left for easy work. 4 Remove the sound blanket (outer). Points Partition plate (1) (R16610) (R16611) 5 The sound blanket is fragile. Carefully pass the discharge pipe through it. Remove the sound blanket (top lower).
Outdoor Unit: RXS24LVJU Procedure Step 6 SiUS091133 Points Open the sound blanket (inner). The sound blanket is fragile. Be careful of the notches of the compressor mount (3 locations). Sound blanket (inner) (R7018) 7 Remove the sound blanket (inner).
SiUS091133 6.7 Removal of Compressor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step 1 Outdoor Unit: RXS24LVJU Remove the terminal cover. Points Terminal cover (R9690) 2 3 Pull out the 3 lead wires. Remove the overload protector (OL).
Outdoor Unit: RXS24LVJU Procedure Step 4 SiUS091133 Points Disconnect the piping, referring to page 381. Remove the 2 nuts.
SiUS091133 Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU 7. Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU Note: 7.1 The illustrations are for heat pump models as representative. Removal of Outer Panels Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step Points 1. Appearance features. (R16618) The hooks are secured in the clearances of the outdoor heat exchanger fins. 2. Remove the suction grille.
Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU SiUS091133 Procedure Step 3. Remove the top panel. 1 Remove the 9 screws and remove the top panel. Points Top panel (R16620) 4. Remove the right side panel. 1 Remove the 5 screws. Right side panel (R16621) 2 Slide the right side panel downward to unfasten the 2 hooks on the back side.
SiUS091133 Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU Procedure Step Points Hook (R16622) 3 Remove the right side panel. (R16623) 5. Remove the front panel (2). 1 Remove the screw.
Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU Procedure Step 2 SiUS091133 Points Slide the front panel (2) downward to unfasten the 3 hooks. (R16625) (R16626) 3 The insulation sheet is inserted between the front panel (2) and the electrical box. Remove the front panel (2).
SiUS091133 Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU Procedure Step Points Remove the discharge grille and the outdoor fan first to remove the front panel (1). 6. Remove the front panel (1). 1 Remove the 4 screws on the discharge grille. Discharge grille Front panel (1) (R9757) 2 Pull the bottom of the discharge grille and remove it. (R9758) 3 Nut size: M8 Remove the outdoor fan fixing nut. 13 mm (0.
Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU Procedure Step 4 SiUS091133 Remove the 3 screws on the partition plate (1). Points Partition plate (1) (R16629) 5 Remove the 2 screws at the bottom of the front. (R16630) 6 Remove the screw at the bottom of the left side.
SiUS091133 Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU Procedure Step 7 Remove the screw at the bottom of the back side. 8 The front panel (1) has a hook on its front. Lift the front panel (1). Points (R9602) Hook (R16631) 9 Remove the front panel (1).
Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU SiUS091133 Procedure Step Points 7. Remove the rear panel. 1 Cut the clamp. (R17015) 2 Remove the 3 screws. 3 Remove the wire fixing plate. (R17016) 4 Remove the 7 screws of the terminal board and ground wires. Detach the connection wires and the power supply wires.
SiUS091133 Procedure Step 5 Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU Points Remove the 2 screws on the partition plate (2). Rear panel Partition plate (2) 6 (R17013) Lift up slightly and remove the partition plate (2). Partition plate (2) (R17014) 7 Remove the screw on the bottom frame.
Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU SiUS091133 Procedure Step 8 Remove the screw on the stop valve mounting plate. 9 Lift the rear panel upward to unfasten the 2 hooks. Points Stop valve mounting plate (R16638) Hook (R16639) 10 Push the hooks of the outdoor temperature thermistor holder from inner-side of the rear panel and detach it.
SiUS091133 Procedure Step 11 Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU Points Remove the rear panel.
Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU 7.2 Removal of Electrical Box Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step 1 SiUS091133 Points Remove the screw on the stop valve mounting plate. Stop valve mounting plate (R16641) 2 Remove the screw on the partition plate (1). Partition plate (1) (R16917) 3 Remove the 2 screws to detach the ground wires.
SiUS091133 Procedure Step 4 Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU Points Disconnect the connector for fan motor [S70] and release the 4 clamps attached to the electrical box. Ferrite core When reassembling, insert each clamp into the small hole. For the ferrite core of fan motor [S70] For the ferrite core of electronic expansion valve coil For the thermistor For the four way ASSY harnesses valve coil harness (R16919) (R16918) 5 Release the fan motor lead wire.
Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU Procedure Step 7 SiUS091133 Points The compressor lead wire is fixed on the partition plate (1) with a clamp. Clamp (R9623) 8 Pull out the clamp and release the compressor lead wire. Clamp (R9624) 9 Disconnect the relay connector for the overload protector and the compressor.
SiUS091133 Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU Procedure Step 10 Release the thermistor harness from the hook at the bottom of electrical box. 11 Pull out the clamp of the thermistor harness from the hole of the electrical box. Points When reassembling, insert the clamp into the small hole. Hook Fixing position for the thermistor harness (R16647) 12 Slide the electrical box leftward to unfasten the hook on the right side of the box.
Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU 7.3 SiUS091133 Removal of PCBs Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step 1 Remove the cover. 2 Disconnect the connectors [S52] [S102] from the service monitor PCB. Points Preparation Remove the electrical box according to the “Removal of Electrical Box”.
SiUS091133 Procedure Step 4 Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU Points Remove the screws of the terminal board and the ground wire. Ground wire Terminal board (R16709) 5 Unfasten the hook on the right. (R5283) 6 Open the terminal board. (R5284) 7 Disconnect the harnesses.
Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU Procedure Step 8 SiUS091133 Disconnect the 2 harnesses for the reactor [HR1] [HR2]. Points [HR1] [HR2] [HR1] : white [HR2] : blue The harness for [HR2] has a ferrite core. Ferrite core (R5286) 9 Remove the 3 screws of the main PCB. (R5287) 10 Release the 4 hooks. Hook 11 Lift up and remove the main PCB. (R13524) Refer to page 26 for detail.
SiUS091133 7.4 Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU Removal of Fan Motor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step 1 Cut the clamps at 2 locations. 2 Remove the 2 lower screws first. 3 Then, remove the 2 upper screws. Points Preparation Remove the electrical box according to the "Removal of Electrical Box". (R9630) Be sure to remove the lower screws first.
Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU 7.5 SiUS091133 Removal of Coils / Thermistors Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step Points 1. Remove the electronic expansion valve coil. 1 Pull the electronic expansion valve coil out. Electronic expansion valve coil (R9631) You can remove the thermistor ASSY with the electrical box on. (1) Disconnect [S90] from the electrical box (main PCB).
SiUS091133 Procedure Step 3 Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU Points Remove the sound blanket (top upper). Sound blanket (top upper) 4 Remove the discharge pipe thermistor. Discharge pipe thermistor 5 (R16920) (R9635) At the back side, open the outdoor temperature thermistor holder.
Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU Procedure Step 6 SiUS091133 Points Release the outdoor temperature thermistor. Outdoor temperature thermistor (R9637) 3. Remove the four-way valve coil. 1 Remove the screw. (R9638) 2 Remove the four-way valve coil.
SiUS091133 7.6 Removal of Sound Blankets Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step 1 Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU Points Open the sound blanket (outer). Sound blanket (outer) (R16921) 2 The sound blanket is fragile. Carefully pass the discharge pipe through it. Remove the sound blanket (top upper).
Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU Procedure Step 4 SiUS091133 Points Remove the sound blanket (outer). Sound blanket (outer) (R9643) 5 Open the sound blanket (inner). Sound blanket Compressor mount (inner) (R9644) 6 The sound blanket is fragile. Be careful of the notches of the compressor mount (4 locations). Remove the sound blanket (inner).
SiUS091133 7.7 Removal of Compressor Procedure Warning Be sure to wait for 10 minutes or more after turning off all power supplies before disassembling work. Procedure Step 1 Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU Remove the terminal cover. Points Terminal cover (R9650) 2 3 U: red, V: yellow, W: blue Pull out the 3 lead wires. Remove the overload protector (OL).
Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU SiUS091133 Procedure Step Points Before working, make sure that the refrigerant gas is empty in the circuit. Be sure to apply nitrogen replacement when heating up the brazed part. 4 Heat up the brazed part and withdraw the piping with pliers. Warning Use caution to avoid burning yourself with pipes and other parts that are heated by the gas brazing machine. Warning If the refrigerant gas leaks during work, immediately ventilate the room.
SiUS091133 Part 8 Trial Operation and Field Settings 1. 2. 3. 4. Pump Down Operation............................................................................383 Forced Cooling Operation .......................................................................384 Trial Operation ........................................................................................386 Field Settings ..........................................................................................387 4.1 4.2 4.3 4.
Pump Down Operation SiUS091133 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) Carry out forced cooling operation. 3) After 5 to 10 minutes, close the liquid stop valve with a hexagonal wrench. 4) After 2 to 3 minutes, close the gas stop valve and stop the forced cooling operation.
SiUS091133 Forced Cooling Operation 2. Forced Cooling Operation Item Conditions Forced Cooling The forced cooling operation is allowed when both of the following conditions are met. 1) The outdoor unit is not abnormal and not in the 3-minute standby mode. 2) The outdoor unit is not operating. The forced cooling operation starts when any of the following conditions is fulfilled. Start 1) Press the forced cooling operation [ON/OFF] button (SW1) on the indoor unit for 5 seconds.
Forced Cooling Operation SiUS091133 15/18 class Forced cooling operation [ON/OFF] button (SW1) 1 2 3 Push Screwdriver (R16616) 24/30/36 class S102 S2 ON ABCD LED-A SW4 SW1 Forced cooling operation ON/OFF button (SW1) (R14475) 385 Trial Operation and Field Settings
SiUS091133 Trial Operation 3. Trial Operation Outline 1. Measure the supply voltage and make sure that it falls within the specified range. 2. Trial operation should be carried out in either cooling or heating operation. 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. The air conditioner requires a small amount of power in standby mode.
Field Settings SiUS091133 4. Field Settings 4.1 Model Type Setting 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. Make the setting as shown in the illustration. (The factory set is the heat pump side.) • Heat pump model: Set the DIP switch to H/P. • Cooling only model: Set the DIP switch to C/O. DIP switch H/P 4.
SiUS091133 4.3 Field Settings 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 addresses. Both the indoor unit PCB and the wireless remote controller need alteration. Indoor Unit PCB Cut the address setting jumper JA on the control PCB.
Field Settings 4.4 SiUS091133 Facility Setting Jumper and Switch (Cooling at Low Outdoor Temperature) Outline This function is limited only for facilities (the target of air conditioning is equipment such as computer. Never use it in spaces occupied by humans such as a residence or office. Detail You can expand the operation range to –10°C (14°F) by cutting the jumper or turning on switch on the outdoor unit PCB. If the outdoor temperature falls to –18°C (–0.4°F) or lower, the operation stops.
SiUS091133 Field Settings 24/30/36 class S102 S2 ON ABCD LED-A SW4 SW1 Turn on the switch SW4-B. (R14478) Caution 4.5 1. If the outdoor unit is installed where the outdoor heat exchanger of the unit is exposed to direct wind, provide a windbreak wall. 2. Intermittent noises may be produced by the indoor unit due to the outdoor fan turning on and off when using facility settings. 3.
Application of Silicon Grease to a Power Transistor and a Diode Bridge SiUS091133 5. Application of Silicon Grease to a Power Transistor and a Diode Bridge Applicable Models All outdoor units using an inverter type compressor for room air conditioner. When the printed circuit board (PCB) of an outdoor unit is replaced, it is required that silicon grease (*1) be precisely applied to the heat radiation part (the contact point to the radiation fin) of the power transistor and the diode bridge.
SiUS091133 Part 9 Appendix 1. Piping Diagrams......................................................................................393 1.1 Indoor unit ................................................................................................ 393 1.2 Outdoor Unit ............................................................................................. 396 2. Wiring Diagrams......................................................................................399 2.1 Indoor Unit....................
Piping Diagrams SiUS091133 1. Piping Diagrams 1.1 Indoor unit FTXS09/12LVJU INDOOR UNIT 1/4 CuT HEAT EXCHANGER FIELD PIPING 1/4 CuT FIELD PIPING 3/8 CuT CROSS FLOW FAN THERMISTOR ON HEAT EXCH. M FAN MOTOR 3/8 CuT REFRIGERANT FLOW COOLING HEATING 4D074606 FTXS15/18LVJU INDOOR UNIT 5/16 CuT DISTRIBUTOR HEAT EXCHANGER FIELD PIPING 1/4 CuT CROSS FLOW FAN THERMISTOR ON HEAT EXCH.
SiUS091133 Piping Diagrams FTXS24LVJU INDOOR UNIT 5/16 CuT DISTRIBUTOR HEAT EXCHANGER THERMISTOR ON HEAT EXCH. CROSS FLOW FAN FIELD PIPING 1/4 CuT M FAN MOTOR HEADER FIELD PIPING 5/8 CuT 1/2 CuT REFRIGERANT FLOW COOLING HEATING 4D074608 FTXS30/36LVJU INDOOR UNIT 5/16 CuT DISTRIBUTOR HEAT EXCHANGER FIELD PIPING 3/8 CuT CROSS FLOW FAN M FAN MOTOR FIELD PIPING 5/8 CuT THERMISTOR ON HEAT EXCH.
Piping Diagrams SiUS091133 FDXS09/12LVJU INDOOR UNIT (1/4CuT) HEAT EXCHANGER THERMISTOR ON HEAT EXCH.
SiUS091133 1.2 Piping Diagrams Outdoor Unit RXS09/12LVJU OUTDOOR UNIT 3/8CuT 9/32CuT OUTDOOR TEMPERATURE THERMISTOR HEAT EXCHANGER 9/32CuT MUFFLER WITH FILTER 3/16CuT MUFFLER WITH FILTER M φ.5/32×ID.
Piping Diagrams SiUS091133 RXS24LVJU OUTDOOR UNIT OUTDOOR TEMPERATURE THERMISTOR HEAT EXCHANGER (CONDENSER) THERMISTOR 5/32CuT 5/16CuT DC FAN MOTOR 3/8CuT 3/8CuT DISTRIBUTOR M ELECTRONIC EXPANSION VALVE EV 3/8CuT FILTER 4-WAY VALVE ON: HEATING 5/8CuT 3/8CuT 5/8CuT 3/8CuT 3/8CuT MUFFLER WITH FILTER CAPILLARY TUBE PROPELLER FAN RECEIVER 5/16CuT 5/16CuT 5/8CuT 5/8CuT 5/8CuT 5/16CuT MUFFLER DISCHARGE PIPE THERMISTOR 3/8CuT 1/2CuT HEADER LIQUID LINE STOP VALVE HEAT EXCHANGER 5/16CuT
SiUS091133 Piping Diagrams RXS30/36LVJU OUTDOOR UNIT OUTDOOR TEMPERATURE THERMISTOR HEAT EXCHANGER (CONDENSER) THERMISTOR DC FAN MOTOR 5/16CuT 5/16CuT 5/16CuT 5/32CuT 3/8CuT 3/8CuT DISTRIBUTOR CAPILLARY TUBE M ELECTRONIC EXPANSION VALVE EV FILTER 4-WAY VALVE ON:HEATING 3/8CuT FILTER PROPELLER FAN 5/8CuT RECEIVER LIQUID LINE STOP VALVE 1/2CuT HEADER 5/8CuT 3/8CuT HEAT EXCHANGER 3/8CuT 5/16CuT 5/16CuT 5/16CuT 5/16CuT 5/16CuT 5/16CuT 5/16CuT 5/16CuT 5/16CuT 5/16CuT REFRIGERANT FLOW COMPR
Wiring Diagrams SiUS091133 2. Wiring Diagrams 2.1 Indoor Unit FTXS09/12LVJU 1 PCB3 1 LED1 H1P LED2 H2P LED3 H3P 9 BLK BLK BLK BLK BLK BLK BLK BLK BLK FU1 F1U PCB1 S46 1 S49 H1 3.
SiUS091133 Wiring Diagrams FDXS09/12LVJU A1P H1 A2P F1U 3.
Wiring Diagrams 2.2 SiUS091133 Outdoor Unit RXS09/12LVJU FIELD WIRING 2 L2 2 WHT 3 3 RED AC2 S MRM10 V2 BLU GR GRN/YLW L2 GR HA2 + FU1 3.15A SA1 1 S11 E1 9 E2 V1 C6 Q1 ~ – 1 WHT BLK BLK BLK BLK BLK BLK BLK BLK + C5 DB2 ~ + ~ – GRY ORG MR30 GRN HA1 HL3 HL2 V3 L1 HN3 HN2 IPM1 HR2 DB1 ~ + BRN – + + – C119 – – PCB2 S10 DB3 ~ + FU2 3.
SiUS091133 Wiring Diagrams RXS24LVJU L1R GRN Z6C N=1 GRN YLW L1 POWER SUPPLY L1 L2 GR N=4 Z2C L2 BLK Z3C N=3 MRM10 1 FU3 7 HR2 9 8 V9 AC2 6(P) 1 S10 + + + S70 1 PM1 MR30 U V W 5 4 3 FU2 3.15A N=1 Z5C RED M1F 3.
Wiring Diagrams 403 SiUS091133 Appendix
Daikin Industries, Ltd.’s products are manufactured for export to numerous countries throughout the 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 authorized importer, distributor and/or retailer whether this product conforms tot he applicable standards, and is suitable for use, in the region where the product will be used.
