Daikin MC70L3VM L-Series Service Manual

Service ManualInverter PairFTXS-L SeriesFDXS-L SeriesSiUS091133[Applied Models] Inverter Pair : Cooling Only Inverter Pair : Heat Pump

SiUS091133 Safety Considerationsix• Do not repair the electrical components with wet hands. Working on the equipment with wet hands may cause an elect

SiUS091133 Problem Symptoms and MeasuresService Diagnosis 902. Problem Symptoms and MeasuresSymptom Check Item Details of Measure Reference PageThe un

Service Check Function SiUS09113391 Service Diagnosis3. Service Check FunctionCheck Method 1 1. When the timer cancel button is held down for 5 second

SiUS091133 Service Check FunctionService Diagnosis 92Check Method 2 1. Press the 3 buttons (TEMP, TEMP, MODE) at the same time to enter the diagnosi

Service Check Function SiUS09113393 Service Diagnosis5. Press the [TEMP]  or buttonand change the number until you hear the long beep.6. Diagnose

SiUS091133 TroubleshootingService Diagnosis 944. Troubleshooting4.1 Error Codes and Description: Displayed only when system-down occurs.Error Codes D

Troubleshooting SiUS09113395 Service Diagnosis4.2 Indoor Unit PCB AbnormalityRemote Controller DisplayA1Method of Malfunction DetectionThe system chec

SiUS091133 TroubleshootingService Diagnosis 96TroubleshootingNote: Check the following connector.Check the combination of the indoor and outdoor unit.

Troubleshooting SiUS09113397 Service Diagnosis4.3 Freeze-up Protection Control or Heating Peak-cut ControlRemote Controller DisplayA5Method of Malfunc

SiUS091133 TroubleshootingService Diagnosis 98TroubleshootingCheck No.01Refer to P.142NONONOCheck No. 06Check the indoor heat exchanger thermistor.YES

Troubleshooting SiUS09113399 Service Diagnosis4.4 Fan Motor or Related Abnormality4.4.1 DC Motor (FTXS Series)Remote Controller DisplayA6Method of Mal

SiUS0911331 List of FunctionsPart 1List of Functions1. Functions...

SiUS091133 TroubleshootingService Diagnosis 100TroubleshootingCheck No.02Refer to P.143Turn off the power supply and disconnect the fan motor connecto

Troubleshooting SiUS091133101 Service Diagnosis4.4.2 AC Motor (FDXS Series)Remote Controller DisplayA6Method of Malfunction DetectionThe rotation spee

SiUS091133 TroubleshootingService Diagnosis 102TroubleshootingCheck No.04Refer to P.143NONONONONONOYESYESYESYESYESYES(R16009)CautionReplace the fan mo

Troubleshooting SiUS091133103 Service Diagnosis4.5 Thermistor or Related Abnormality (Indoor Unit)Remote Controller DisplayC4, C9 Method of Malfuncti

SiUS091133 TroubleshootingService Diagnosis 1044.6 Refrigerant ShortageRemote Controller DisplayU0Method of Malfunction DetectionRefrigerant shortage

Troubleshooting SiUS091133105 Service DiagnosisRefrigerant shortage detection III: (09/12 class only)When the difference of the temperature is smaller

SiUS091133 TroubleshootingService Diagnosis 106TroubleshootingCheck No.01Refer to P.142Check No.12Refer to P.144(R16015)CautionYESNGNONOYESYESYESNOYES

Troubleshooting SiUS091133107 Service Diagnosis4.7 Low-voltage Detection or Over-voltage DetectionRemote Controller DisplayU2Method of Malfunction Det

SiUS091133 TroubleshootingService Diagnosis 108TroubleshootingCorrect the power supply.Replace the outdoor unit PCB.Check for such factors for a long

Troubleshooting SiUS091133109 Service Diagnosis4.8 Signal Transmission Error (between Indoor Unit and Outdoor Unit)Remote Controller DisplayU4Method o

SiUS091133 FunctionsList of Functions 21. Functions1.1 FTXS SeriesCategory FunctionsFTXS09/12/15/18LVJURXS09/12/15/18LVJUFTXS24LVJURXS24LVJUCategory F

SiUS091133 TroubleshootingService Diagnosis 110TroubleshootingCheck No.11Refer to P.144Check No.11Check the power supply waveform.Check the voltage of

Troubleshooting SiUS091133111 Service Diagnosis4.9 Signal Transmission Error on Outdoor Unit PCB (24/30/36 Class Only)Remote Controller DisplayU7Metho

SiUS091133 TroubleshootingService Diagnosis 1124.10 Unspecified Voltage (between Indoor Unit and Outdoor Unit)Remote Controller DisplayUAMethod of Mal

Troubleshooting SiUS091133113 Service Diagnosis4.11 Outdoor Unit PCB AbnormalityRemote Controller Display E1Method of Malfunction Detection The syste

SiUS091133 TroubleshootingService Diagnosis 114Troubleshooting 24/30/36 class(R16911)CautionBe sure to turn off the power switch before connecting or

Troubleshooting SiUS091133115 Service Diagnosis4.12 OL Activation (Compressor Overload)Remote Controller DisplayE5Method of Malfunction DetectionA com

SiUS091133 TroubleshootingService Diagnosis 1164.13 Compressor LockRemote Controller DisplayE6Method of Malfunction DetectionA compressor lock is dete

Troubleshooting SiUS091133117 Service Diagnosis4.14 DC Fan LockRemote Controller DisplayE7Method of Malfunction DetectionAn error is determined with t

SiUS091133 TroubleshootingService Diagnosis 1184.15 Input Overcurrent DetectionRemote Controller DisplayE8Method of Malfunction DetectionAn input over

Troubleshooting SiUS091133119 Service Diagnosis4.16 FourWay Valve AbnormalityRemote Controller DisplayEAMethod of Malfunction DetectionThe room temper

Functions SiUS0911333 List of FunctionsCategory FunctionsFTXS30/36LVJURKS30/36LVJUFTXS30/36LVJURXS30/36LVJUCategory FunctionsFTXS30/36LVJURKS30/36LVJU

SiUS091133 TroubleshootingService Diagnosis 120TroubleshootingCheck No.01Refer to P.142Check No.13Refer to P.145Check No.14Refer to P.145NGOKNOOKNGOKY

Troubleshooting SiUS091133121 Service Diagnosis4.17 Discharge Pipe Temperature ControlRemote Controller DisplayF3Method of Malfunction DetectionAn err

SiUS091133 TroubleshootingService Diagnosis 122TroubleshootingCheck No.01Refer to P.142Check No.12Refer to P.144Check No.14Refer to P.145(R15825)Cauti

Troubleshooting SiUS091133123 Service Diagnosis4.18 High Pressure Control in CoolingRemote Controller DisplayF6Method of Malfunction DetectionHigh-pre

SiUS091133 TroubleshootingService Diagnosis 124TroubleshootingCheck No.01Refer to P.142Check No.12Refer to P.144Check No.17Refer to P.149Check No.18Re

Troubleshooting SiUS091133125 Service Diagnosis4.19 Compressor System Sensor Abnormality4.19.1 09/12/15/18 ClassRemote Controller DisplayH0Method of M

SiUS091133 TroubleshootingService Diagnosis 1264.19.2 24/30/36 ClassRemote Controller DisplayH0Method of Malfunction Detection The system checks the

Troubleshooting SiUS091133127 Service DiagnosisTroubleshootingConnect the reactor properly.(R15891)NOYESConnect the compressor properly.NOYESReplace t

SiUS091133 TroubleshootingService Diagnosis 1284.20 Position Sensor AbnormalityRemote Controller DisplayH6Method of Malfunction DetectionA compressor

Troubleshooting SiUS091133129 Service DiagnosisTroubleshooting 09/12/15/18 classCheck No.15Refer to P.146Check No.18Refer to P.150Check No.20Refer to

SiUS091133 FunctionsList of Functions 41.2 FDXS SeriesCategory FunctionsFDXS09/12LVJURXS09/12LVJUCategory FunctionsFDXS09/12LVJURXS09/12LVJUBasic Func

SiUS091133 TroubleshootingService Diagnosis 130Troubleshooting 24/30/36 classCheck No.15Refer to P.146Check No.18Refer to P.150CautionBe sure to turn

Troubleshooting SiUS091133131 Service Diagnosis4.21 DC Voltage / Current Sensor Abnormality (09/12 Class Only)Remote Controller DisplayH8Method of Mal

SiUS091133 TroubleshootingService Diagnosis 1324.22 CT or Related Abnormality (24/30/36 Class Only)Remote Controller DisplayH8Method of Malfunction De

Troubleshooting SiUS091133133 Service DiagnosisTroubleshootingCheck No.15Refer to P.146Check No.21Refer to P.152(R15326)CautionYES2 secTimeNONOYESYESN

SiUS091133 TroubleshootingService Diagnosis 1344.23 Thermistor or Related Abnormality (Outdoor Unit)Remote Controller Display H9, J3, J6, P4Method of

Troubleshooting SiUS091133135 Service DiagnosisTroubleshooting In case of “H9” “J3” “J6”Check No.01Refer to P.142H9 : Outdoor temperature thermistorJ3

SiUS091133 TroubleshootingService Diagnosis 1364.24 Electrical Box Temperature RiseRemote Controller DisplayL3Method of Malfunction DetectionAn electr

Troubleshooting SiUS091133137 Service DiagnosisTroubleshootingCheck No.17Refer to P.149Check No.19Refer to P.150CautionTo cool the electrical componen

SiUS091133 TroubleshootingService Diagnosis 1384.25 Radiation Fin Temperature RiseRemote Controller DisplayL4Method of Malfunction DetectionA radiatio

Troubleshooting SiUS091133139 Service DiagnosisTroubleshootingCheck No.17Refer to P.149Check No.19Refer to P.150Note: Refer to “Application of silicon

SiUS0911335 SpecificationsPart 2Specifications1. Specifications...

SiUS091133 TroubleshootingService Diagnosis 1404.26 Output Overcurrent DetectionRemote Controller DisplayL5Method of Malfunction DetectionAn output ov

Troubleshooting SiUS091133141 Service DiagnosisTroubleshootingCheck No.15Refer to P.146Check No.17Refer to P.149Check No.18Refer to P.150Check No.22Re

SiUS091133 CheckService Diagnosis 1425. Check5.1 Thermistor Resistance CheckCheck No.01 Disconnect the connectors of the thermistors from the PCB, and

Check SiUS091133143 Service Diagnosis5.2 Fan Motor Connector Output CheckCheck No.02 FTXS series1. Check the connection of connector.2. Check the moto

SiUS091133 CheckService Diagnosis 1445.4 Power Supply Waveforms CheckCheck No.11 Measure the power supply waveform between No. 1 and No. 2 on the term

Check SiUS091133145 Service Diagnosis5.6 FourWay Valve Performance CheckCheck No.135.7 Inverter Units Refrigerant System CheckCheck No.14(R15737)NOYES

SiUS091133 CheckService Diagnosis 1465.8 “Inverter Checker” CheckCheck No.15  CharacteristicsIf an abnormal stop occurs due to compressor startup fai

Check SiUS091133147 Service Diagnosis Diagnose method (Diagnose according to 6 LEDs lighting status.)(1) If all the LEDs are lit uniformly, the compr

SiUS091133 CheckService Diagnosis 1485.9 Rotation Pulse Check on the Outdoor Unit PCBCheck No.16 09/12 class1. Check that the voltage between the pins

Check SiUS091133149 Service Diagnosis5.10 Installation Condition CheckCheck No.17Installation condition checkOKCheck the allowable dimensions of the a

SiUS091133 SpecificationsSpecifications 61. Specifications1.1 FTXS Series60 Hz, 208 - 230 VNote:  The data are based on the conditions shown in the t

SiUS091133 CheckService Diagnosis 1505.11 Discharge Pressure CheckCheck No.185.12 Outdoor Fan System CheckCheck No.19 DC motor(R15738)Not dirtyYESYESD

Check SiUS091133151 Service Diagnosis5.13 Main Circuit Short CheckCheck No.20Note: Check to make sure that the voltage between (+) and (–) of the diod

SiUS091133 CheckService Diagnosis 15215/18 class5.14 Capacitor Voltage CheckCheck No.21 Before this check, be sure to check the main circuit for short

Check SiUS091133153 Service Diagnosis5.15 Power Module CheckCheck No.22Note: Check to make sure that the voltage between (+) and (–) of the power modu

SiUS091133 CheckService Diagnosis 15415/18 class24/30/36 classPower module(R16697)(R16073)Power module

SiUS091133155 Removal ProcedurePart 7Removal Procedure1. Indoor Unit: FTXS09/12LVJU...1

SiUS091133Removal Procedure 1565.4 Removal of PCBs... 3085.5 Removal

Indoor Unit: FTXS09/12LVJU SiUS091133157 Removal Procedure1. Indoor Unit: FTXS09/12LVJU1.1 Removal of Air FiltersProcedure Warning Be sure to wait for

SiUS091133 Indoor Unit: FTXS09/12LVJURemoval Procedure 1583. Remove the Titanium apatite photocatalytic air-purifying filters.1The Titanium apatite ph

Indoor Unit: FTXS09/12LVJU SiUS091133159 Removal Procedure1.2 Removal of Front PanelProcedure Warning Be sure to wait for 10 minutes or more after tur

Specifications SiUS0911337 Specifications60 Hz, 208 - 230 VNote:  The data are based on the conditions shown in the table below.ModelIndoor Unit FTXS

SiUS091133 Indoor Unit: FTXS09/12LVJURemoval Procedure 1601.3 Removal of Front GrilleProcedure Warning Be sure to wait for 10 minutes or more after tu

Indoor Unit: FTXS09/12LVJU SiUS091133161 Removal Procedure2. Remove the front grille.1Remove the 2 screws.2Unfasten the 3 hooks at the top. The conve

SiUS091133 Indoor Unit: FTXS09/12LVJURemoval Procedure 1621.4 Removal of Horizontal Blades / Vertical BladesProcedure Warning Be sure to wait for 10 m

Indoor Unit: FTXS09/12LVJU SiUS091133163 Removal Procedure2. Remove the horizontal blade (small).1Unfasten the center shaft while bending the horizont

SiUS091133 Indoor Unit: FTXS09/12LVJURemoval Procedure 1642Remove the fan guard.4. Remove the vertical blade ASSYs.1Detach the pivot from the interloc

Indoor Unit: FTXS09/12LVJU SiUS091133165 Removal Procedure4Remove the vertical blade ASSY. A vertical blade ASSY has 5 fins.It is impossible to repla

SiUS091133 Indoor Unit: FTXS09/12LVJURemoval Procedure 1661.5 Removal of Electrical BoxProcedure Warning Be sure to wait for 10 minutes or more after

Indoor Unit: FTXS09/12LVJU SiUS091133167 Removal Procedure4Disconnect the connector for the fan motor [S1].5Disconnect the connector for the swing mot

SiUS091133 Indoor Unit: FTXS09/12LVJURemoval Procedure 1687Pull out the indoor heat exchanger thermistor. The position of the indoor heat exchanger t

Indoor Unit: FTXS09/12LVJU SiUS091133169 Removal Procedure11Lift up the electrical box and pull it out. There is a hook also at the lower part of the

SiUS091133 SpecificationsSpecifications 860 Hz, 208 - 230 VNote:  The data are based on the conditions shown in the table below.ModelIndoor Unit FTXS

SiUS091133 Indoor Unit: FTXS09/12LVJURemoval Procedure 1701.6 Removal of PCBsProcedure Warning Be sure to wait for 10 minutes or more after turning of

Indoor Unit: FTXS09/12LVJU SiUS091133171 Removal Procedure2. Remove the terminal board.1Remove the screw and remove the terminal board.3. Remove the s

SiUS091133 Indoor Unit: FTXS09/12LVJURemoval Procedure 1723Remove the signal receiver unit.4. Remove the INTELLIGENT EYE sensor PCB.1Unfasten the 3 ho

Indoor Unit: FTXS09/12LVJU SiUS091133173 Removal Procedure5. Remove the signal receiver PCB.1Unfasten the 3 hooks and remove the signal receiver PCB.2

SiUS091133 Indoor Unit: FTXS09/12LVJURemoval Procedure 1742Unfasten the 4 hooks and remove the display PCB.3Disconnect the connector [S49] from the di

Indoor Unit: FTXS09/12LVJU SiUS091133175 Removal Procedure3The figures show the names of the PCB component parts.[S1]: DC fan motor[S25]: INTELLIGENT

SiUS091133 Indoor Unit: FTXS09/12LVJURemoval Procedure 1761.7 Removal of Swing MotorsProcedure Warning Be sure to wait for 10 minutes or more after tu

Indoor Unit: FTXS09/12LVJU SiUS091133177 Removal Procedure4Detach the pivot from the interlock shaft for vertical blades with a flat screwdriver.5Remo

SiUS091133 Indoor Unit: FTXS09/12LVJURemoval Procedure 1788Remove the 2 screws.9Remove the swing motor for vertical blades.10Disconnect the connector.

Indoor Unit: FTXS09/12LVJU SiUS091133179 Removal Procedure2. Remove the swing motors for horizontal blades. CautionWhen reassembling, do not confuse t

Specifications SiUS0911339 Specifications60 Hz, 208 - 230 VNote:  The data are based on the conditions shown in the table below.ModelIndoor Unit FTXS

SiUS091133 Indoor Unit: FTXS09/12LVJURemoval Procedure 1801.8 Removal of Indoor Heat ExchangerProcedure Warning Be sure to wait for 10 minutes or more

Indoor Unit: FTXS09/12LVJU SiUS091133181 Removal Procedure2. Remove the indoor heat exchanger.1Detach the indoor unit from the installation plate.2Unf

SiUS091133 Indoor Unit: FTXS09/12LVJURemoval Procedure 1825Unfasten the upper hook on the right side with a flat screwdriver.6After unfastening the lo

Indoor Unit: FTXS09/12LVJU SiUS091133183 Removal Procedure1.9 Removal of Fan MotorProcedure Warning Be sure to wait for 10 minutes or more after turni

SiUS091133 Indoor Unit: FTXS09/12LVJURemoval Procedure 1843Remove the 2 screws of the fan motor fixing plate.4Unfasten the hook of the fan motor fixin

Indoor Unit: FTXS09/12LVJU SiUS091133185 Removal Procedure2Loosen the lock screw and remove the fan motor. When reassembling the fan motor and the fa

SiUS091133 Indoor Unit: FTXS15/18/24LVJURemoval Procedure 1862. Indoor Unit: FTXS15/18/24LVJU2.1 Removal of Air Filters / Front PanelProcedure Warning

Indoor Unit: FTXS15/18/24LVJU SiUS091133187 Removal Procedure3. Remove the Titanium apatite photocatalytic air-purifying filters.1Remove the Titanium

SiUS091133 Indoor Unit: FTXS15/18/24LVJURemoval Procedure 1884. Remove the front panel.1While opening the front panel further than it stops, release b

Indoor Unit: FTXS15/18/24LVJU SiUS091133189 Removal Procedure2.2 Removal of Front GrilleProcedure Warning Be sure to wait for 10 minutes or more after

SiUS091133Table of Contents iInverter PairFTXS-L SeriesFDXS-L SeriesCooling OnlyIndoor UnitFTXS30LVJUFTXS36LVJUOutdoor UnitRKS30LVJURKS36LVJUHeat Pu

SiUS091133 SpecificationsSpecifications 1060 Hz, 208 - 230 VNote:  The data are based on the conditions shown in the table below.ModelIndoor Unit FTX

SiUS091133 Indoor Unit: FTXS15/18/24LVJURemoval Procedure 1902Remove the screw caps with a flat screwdriver.3Remove the lower 3 screws.4Unfasten the 3

Indoor Unit: FTXS15/18/24LVJU SiUS091133191 Removal Procedure5Pull the upper part of the front grille out and lift the lower part up, and then remove

SiUS091133 Indoor Unit: FTXS15/18/24LVJURemoval Procedure 1922.3 Removal of Electrical BoxProcedure Warning Be sure to wait for 10 minutes or more aft

Indoor Unit: FTXS15/18/24LVJU SiUS091133193 Removal Procedure3. Release the ground wire and the indoor heat exchanger thermistor.1Cut the clamp2Pull o

SiUS091133 Indoor Unit: FTXS15/18/24LVJURemoval Procedure 1944. Remove the electrical box.1Remove the 4 screws and disconnect the connection wires on

Indoor Unit: FTXS15/18/24LVJU SiUS091133195 Removal Procedure4Release the harness from the hooks.5Remove the screw of the electrical box.6Lift up the

SiUS091133 Indoor Unit: FTXS15/18/24LVJURemoval Procedure 1962.4 Removal of PCBsProcedure Warning Be sure to wait for 10 minutes or more after turning

Indoor Unit: FTXS15/18/24LVJU SiUS091133197 Removal Procedure4Remove the screw of the terminal board.5Remove the terminal board.(1 hook at the back)6C

SiUS091133 Indoor Unit: FTXS15/18/24LVJURemoval Procedure 1987Release the harness from the hook. When reassembling, make sure to hook the harness.8Pu

Indoor Unit: FTXS15/18/24LVJU SiUS091133199 Removal Procedure10Unfasten the hook on the right of the signal receiver PCB.(Then the signal receiver PCB

Specifications SiUS09113311 Specifications1.2 FDXS Series60 Hz, 208 - 230 VNote:  The data are based on the conditions shown in the table below.Model

SiUS091133 Indoor Unit: FTXS15/18/24LVJURemoval Procedure 2002. Remove the INTELLIGENT EYE sensor PCB.1Unfasten the 2 hooks on the right and then the

Indoor Unit: FTXS15/18/24LVJU SiUS091133201 Removal Procedure3Remove the shield plate by unfastening the 2 hooks.4Disconnect the connector.[S36]: cont

SiUS091133 Indoor Unit: FTXS15/18/24LVJURemoval Procedure 2022Lift up the display PCB.3Release the harness from the hook.4Disconnect the connector.[S4

Indoor Unit: FTXS15/18/24LVJU SiUS091133203 Removal Procedure4. Remove the control PCB.1Unfasten the 3 hooks.Lift up and remove the control PCB.2Pull

SiUS091133 Indoor Unit: FTXS15/18/24LVJURemoval Procedure 2043Pull out the terminals from the terminal board.[S1] : DC fan motor[S25] : INTELLIGENT EY

Indoor Unit: FTXS15/18/24LVJU SiUS091133205 Removal Procedure2.5 Removal of Horizontal Blades / Swing MotorsProcedure Warning Be sure to wait for 10 m

SiUS091133 Indoor Unit: FTXS15/18/24LVJURemoval Procedure 2063Remove the horizontal blade. Remove both the horizontal blades (upper and lower) in the

Indoor Unit: FTXS15/18/24LVJU SiUS091133207 Removal Procedure2. Remove the air outlet ASSYs.1Remove the air outlet ASSYs by pushing the 2 hooks at the

SiUS091133 Indoor Unit: FTXS15/18/24LVJURemoval Procedure 2084. Remove the swing motors for horizontal blades.1Release the interlock rod.2Remove the s

Indoor Unit: FTXS15/18/24LVJU SiUS091133209 Removal Procedure4Pull out the drain hose, then remove the swing motor unit.5Remove the screw at the cente

SiUS091133Printed Circuit Board Connector Wiring Diagram 12Part 3Printed Circuit BoardConnector Wiring Diagram1. Indoor Unit...

SiUS091133 Indoor Unit: FTXS15/18/24LVJURemoval Procedure 2107Remove the swing motors. CautionWhen reassembling, do not confuse the installing order o

Indoor Unit: FTXS15/18/24LVJU SiUS091133211 Removal Procedure2Remove the interlock rod (2) with pliers.3Remove the interlock rod (1).StepProcedure Poi

SiUS091133 Indoor Unit: FTXS15/18/24LVJURemoval Procedure 2124Remove the 2 screws.5Remove the swing motor for the vertical blade.6Disconnect the conne

Indoor Unit: FTXS15/18/24LVJU SiUS091133213 Removal Procedure2.6 Removal of Indoor Heat ExchangerProcedure Warning Be sure to wait for 10 minutes or m

SiUS091133 Indoor Unit: FTXS15/18/24LVJURemoval Procedure 2142. Remove the piping fixture.1Detach the indoor unit from the installation plate.2Push th

Indoor Unit: FTXS15/18/24LVJU SiUS091133215 Removal Procedure4Remove the piping fixture.3. Remove the indoor heat exchanger.1Widen the auxiliary pipin

SiUS091133 Indoor Unit: FTXS15/18/24LVJURemoval Procedure 2163Push the hook on the right side and unfasten it.4Lift up and remove the indoor heat exch

Indoor Unit: FTXS15/18/24LVJU SiUS091133217 Removal Procedure2.7 Removal of Fan Motor / Fan RotorProcedure Warning Be sure to wait for 10 minutes or m

SiUS091133 Indoor Unit: FTXS15/18/24LVJURemoval Procedure 2182Remove the fan motor fixing plate.3Release the fan motor harness from the hook.4Loosen t

Indoor Unit: FTXS15/18/24LVJU SiUS091133219 Removal Procedure5Remove the fan motor.  When reassembling the fan motor and the fan rotor, provide as mu

Indoor Unit SiUS09113313 Printed Circuit Board Connector Wiring Diagram1. Indoor Unit1.1 FTXS09/12LVJUConnectors and Other PartsPCB (1): Control PCBPC

SiUS091133 Indoor Unit: FTXS15/18/24LVJURemoval Procedure 2202.8 Removal of Vertical Blade ASSYsProcedure Warning Be sure to wait for 10 minutes or mo

Indoor Unit: FTXS30/36LVJU SiUS091133221 Removal Procedure3. Indoor Unit: FTXS30/36LVJU3.1 Removal of Air Filters / Front PanelProcedure Warning Be su

SiUS091133 Indoor Unit: FTXS30/36LVJURemoval Procedure 2223. Remove the Titanium apatite photocatalytic air-purifying filters.1Remove the Titanium apa

Indoor Unit: FTXS30/36LVJU SiUS091133223 Removal Procedure4. Remove the front panel.1While opening the front panel further than it stops, release both

SiUS091133 Indoor Unit: FTXS30/36LVJURemoval Procedure 2243.2 Removal of Front GrilleProcedure Warning Be sure to wait for 10 minutes or more after tu

Indoor Unit: FTXS30/36LVJU SiUS091133225 Removal Procedure2Remove the screw caps with a flat screwdriver.3Remove the lower 3 screws.4Remove the 3 fron

SiUS091133 Indoor Unit: FTXS30/36LVJURemoval Procedure 2265Unfasten the 4 hooks on the top of the front grille. The convex marks (...) on the front p

Indoor Unit: FTXS30/36LVJU SiUS091133227 Removal Procedure6Pull the upper part of the front grille out and lift the lower part up, and then remove the

SiUS091133 Indoor Unit: FTXS30/36LVJURemoval Procedure 2283.3 Removal of Electrical BoxProcedure Warning Be sure to wait for 10 minutes or more after

Indoor Unit: FTXS30/36LVJU SiUS091133229 Removal Procedure3. Release the ground wire and the indoor heat exchanger thermistor.1Remove the screw and re

SiUS091133 Indoor UnitPrinted Circuit Board Connector Wiring Diagram 14PCB Detail PCB (1): Control PCBV1FU1S1S41S21S47JBJAJCS46 S25LED AS32FGH1H2H32P2

SiUS091133 Indoor Unit: FTXS30/36LVJURemoval Procedure 2302Disconnect the connector for the fan motor [S1] and release the harness from the hook.3Rele

Indoor Unit: FTXS30/36LVJU SiUS091133231 Removal Procedure5Release the harness from the hooks.6Remove the screw of the electrical box.7Lift up the ele

SiUS091133 Indoor Unit: FTXS30/36LVJURemoval Procedure 2323.4 Removal of PCBsProcedure Warning Be sure to wait for 10 minutes or more after turning of

Indoor Unit: FTXS30/36LVJU SiUS091133233 Removal Procedure4Remove the screw of the terminal board.5Remove the terminal board.(1 hook at the back)6Cut

SiUS091133 Indoor Unit: FTXS30/36LVJURemoval Procedure 2347Release the harness from the hook. When reassembling, make sure to hook the harness.8Push

Indoor Unit: FTXS30/36LVJU SiUS091133235 Removal Procedure10Unfasten the hook on the right of the signal receiver PCB.(Then the signal receiver PCB is

SiUS091133 Indoor Unit: FTXS30/36LVJURemoval Procedure 2362. Remove the INTELLIGENT EYE sensor PCB.1Unfasten the 2 hooks on the right and then the 2 h

Indoor Unit: FTXS30/36LVJU SiUS091133237 Removal Procedure3Remove the shield plate by unfastening the 2 hooks.4Disconnect the connector.[S36]: control

SiUS091133 Indoor Unit: FTXS30/36LVJURemoval Procedure 2383. Remove the display PCB.1Unfasten the 4 hooks.2Lift up the display PCB.3Release the harnes

Indoor Unit: FTXS30/36LVJU SiUS091133239 Removal Procedure4Disconnect the connector.[S49]: control PCB4. Remove the control PCB.1Unfasten the 3 hooks.

Indoor Unit SiUS09113315 Printed Circuit Board Connector Wiring DiagramPCB (2): Signal Receiver PCBPCB (3): Display PCBPCB (4): INTELLIGENT EYE Sensor

SiUS091133 Indoor Unit: FTXS30/36LVJURemoval Procedure 2403Pull out the terminals from the terminal board.[S1] : DC fan motor[S25] : INTELLIGENT EYE s

Indoor Unit: FTXS30/36LVJU SiUS091133241 Removal Procedure3.5 Removal of Horizontal Blades / Swing MotorsProcedure Warning Be sure to wait for 10 minu

SiUS091133 Indoor Unit: FTXS30/36LVJURemoval Procedure 2424Release the shafts in turn. Removing order(right  left inner right inner left)StepPro

Indoor Unit: FTXS30/36LVJU SiUS091133243 Removal Procedure5Remove the horizontal blade. Remove both the horizontal blades (upper and lower) in the sa

SiUS091133 Indoor Unit: FTXS30/36LVJURemoval Procedure 2443Remove the left air outlet ASSY by pushing the 2 hooks at the back. Remove the center and

Indoor Unit: FTXS30/36LVJU SiUS091133245 Removal Procedure3. Remove the swing motors for horizontal blades.1Release the interlock rod.2Pull out the dr

SiUS091133 Indoor Unit: FTXS30/36LVJURemoval Procedure 2464Remove the 2 pivots.5Remove the swing motors. CautionWhen reassembling, do not confuse the

Indoor Unit: FTXS30/36LVJU SiUS091133247 Removal Procedure4. Remove the swing motor for vertical blades.1Remove the link cover.2Remove the interlock r

SiUS091133 Indoor Unit: FTXS30/36LVJURemoval Procedure 2483Remove the interlock rod (1).4Remove the 2 screws.5Remove the swing motor for the vertical

Indoor Unit: FTXS30/36LVJU SiUS091133249 Removal Procedure6Disconnect the connector.StepProcedure Points(R9558)

SiUS091133 Indoor UnitPrinted Circuit Board Connector Wiring Diagram 161.2 FTXS15/18/24/30/36LVJUConnectors and Other PartsPCB (1): Control PCBPCB (2)

SiUS091133 Indoor Unit: FTXS30/36LVJURemoval Procedure 2503.6 Removal of Fan MotorProcedure Warning Be sure to wait for 10 minutes or more after turni

Indoor Unit: FTXS30/36LVJU SiUS091133251 Removal Procedure3Unfasten the hook at the front and remove the fan motor fixing plate.4Release the harness f

SiUS091133 Indoor Unit: FTXS30/36LVJURemoval Procedure 2525Remove the motor mounting plate. When reassembling the fan motor and the fan rotor, provid

Indoor Unit: FTXS30/36LVJU SiUS091133253 Removal Procedure7Remove the vibration absorber. When reassembling, engage the vibration absorber completely

SiUS091133 Indoor Unit: FTXS30/36LVJURemoval Procedure 2543.7 Removal of Indoor Heat ExchangerProcedure Warning Be sure to wait for 10 minutes or more

Indoor Unit: FTXS30/36LVJU SiUS091133255 Removal Procedure2. Remove the piping fixture.1Detach the indoor unit from the installation plate.2Push the b

SiUS091133 Indoor Unit: FTXS30/36LVJURemoval Procedure 2564Remove the piping fixture.3. Remove the indoor heat exchanger.1Widen the auxiliary piping.2

Indoor Unit: FTXS30/36LVJU SiUS091133257 Removal Procedure3Push the hook on the right side and unfasten it.4Lift up and remove the indoor heat exchang

SiUS091133 Indoor Unit: FTXS30/36LVJURemoval Procedure 2583.8 Removal of Fan RotorProcedure Warning Be sure to wait for 10 minutes or more after turni

Indoor Unit: FTXS30/36LVJU SiUS091133259 Removal Procedure3Loosen the screw of the fan rotor.4Remove the fan motor.  When reassembling the fan motor

Indoor Unit SiUS09113317 Printed Circuit Board Connector Wiring DiagramPCB Detail PCB (1): Control PCB2P227881-52P227881-6V1H1H2H3LED AS32S1S41S46 S25

SiUS091133 Indoor Unit: FTXS30/36LVJURemoval Procedure 2603.9 Removal of Vertical Blade ASSYsProcedure Warning Be sure to wait for 10 minutes or more

Outdoor Unit: RXS09/12LVJU SiUS091133261 Removal Procedure4. Outdoor Unit: RXS09/12LVJU4.1 Removal of Outer Panels / Fan MotorProcedure Warning Be sur

SiUS091133 Outdoor Unit: RXS09/12LVJURemoval Procedure 2622Remove the 3 screws and lift the top panel.3Remove the drip proof cover.4Remove the 4 screw

Outdoor Unit: RXS09/12LVJU SiUS091133263 Removal Procedure The discharge grille has 4 hooks.5Remove the 8 screws of the front panel.6Unfasten the hoo

SiUS091133 Outdoor Unit: RXS09/12LVJURemoval Procedure 2643. Remove the fan motor.  Nut size: M61Remove the nut of the outdoor fan.2Remove the outdoo

Outdoor Unit: RXS09/12LVJU SiUS091133265 Removal Procedure4Disconnect the connector for the fan motor [S70].5Release the fan motor lead wire from the

SiUS091133 Outdoor Unit: RXS09/12LVJURemoval Procedure 2666Remove the screw and remove the fan motor fixing frame. When reassembling, fit the lower h

Outdoor Unit: RXS09/12LVJU SiUS091133267 Removal Procedure7Open the 2 hooks and release the fan motor lead wire. When reassembling, put the fan motor

SiUS091133 Outdoor Unit: RXS09/12LVJURemoval Procedure 2682Remove the 4 screws on the right side panel.3Remove the screw near the stop valves.4Unfaste

Outdoor Unit: RXS09/12LVJU SiUS091133269 Removal Procedure5Lift up the right side panel and remove it. When reassembling, make sure to fit the hook.6

SiUS091133 Indoor UnitPrinted Circuit Board Connector Wiring Diagram 18PCB (2): Signal Receiver PCBPCB (3): Display PCBPCB (4): INTELLIGENT EYE Sensor

SiUS091133 Outdoor Unit: RXS09/12LVJURemoval Procedure 2704.2 Removal of Electrical BoxProcedure Warning Be sure to wait for 10 minutes or more after

Outdoor Unit: RXS09/12LVJU SiUS091133271 Removal Procedure4Disconnect the relay connector for the compressor.5Disconnect the connector for the electro

SiUS091133 Outdoor Unit: RXS09/12LVJURemoval Procedure 2727Pull out the outdoor heat exchanger thermistor. Be careful not to lose the clip for the th

Outdoor Unit: RXS09/12LVJU SiUS091133273 Removal Procedure4.3 Removal of PCBsProcedure Warning Be sure to wait for 10 minutes or more after turning of

SiUS091133 Outdoor Unit: RXS09/12LVJURemoval Procedure 2743Release the 2 ground wires.4Pull out the forced operation button PCB.Disconnect the connect

Outdoor Unit: RXS09/12LVJU SiUS091133275 Removal Procedure6Release the harness.7Cut the clamps at the 2 locations.8Disconnect the connector for the fi

SiUS091133 Outdoor Unit: RXS09/12LVJURemoval Procedure 2769Disconnect the connector for the forced operation button PCB [S100].10Disconnect the connec

Outdoor Unit: RXS09/12LVJU SiUS091133277 Removal Procedure12Release the harness for the outdoor temperature thermistor.13Remove the 6 screws.14Unfaste

SiUS091133 Outdoor Unit: RXS09/12LVJURemoval Procedure 278 Refer to page 22 for detail.[S10] [HL3] [HN3]: filter PCB[S20]: electronic expansion va

Outdoor Unit: RXS09/12LVJU SiUS091133279 Removal Procedure3Release the harnesses from the hook.4Release the harnesses from the 2 hooks.5Remove the scr

Indoor Unit SiUS09113319 Printed Circuit Board Connector Wiring Diagram1.3 FDXS09/12LVJUConnectors and Other PartsA1P: Control PCBA2P: Display PCB1) S

SiUS091133 Outdoor Unit: RXS09/12LVJURemoval Procedure 2806Unfasten the 2 hooks.7Lift and pull out the filter PCB.8Layout of the filter PCB  Refer to

Outdoor Unit: RXS09/12LVJU SiUS091133281 Removal Procedure4.4 Removal of Reactor / Partition PlateProcedure Warning Be sure to wait for 10 minutes or

SiUS091133 Outdoor Unit: RXS09/12LVJURemoval Procedure 2822. Remove the partition plate.1Remove the 2 screws.2The partition plate has 2 hooks on the l

Outdoor Unit: RXS09/12LVJU SiUS091133283 Removal Procedure4.5 Removal of Sound BlanketsProcedure Warning Be sure to wait for 10 minutes or more after

SiUS091133 Outdoor Unit: RXS09/12LVJURemoval Procedure 2844Pull out the sound blanket (inner).5Pull out the sound blanket (bottom).StepProcedure Point

Outdoor Unit: RXS09/12LVJU SiUS091133285 Removal Procedure4.6 Removal of Four-Way ValveProcedure Warning Be sure to wait for 10 minutes or more after

SiUS091133 Outdoor Unit: RXS09/12LVJURemoval Procedure 2863Disconnect the lead wires of the compressor.4Remove the screw and remove the four-way valve

Outdoor Unit: RXS09/12LVJU SiUS091133287 Removal Procedure Before working, make sure that the refrigerant gas is empty in the circuit. Be sure to ap

SiUS091133 Outdoor Unit: RXS09/12LVJURemoval Procedure 2884.7 Removal of CompressorProcedure Warning Be sure to wait for 10 minutes or more after turn

Outdoor Unit: RXS09/12LVJU SiUS091133289 Removal Procedure3Heat up the brazed part of the suction side and disconnect it.Note:  Never use a metal saw

SiUS091133ii Table of Contents1. Safety Considerations...i1.1 Safety Co

SiUS091133 Indoor UnitPrinted Circuit Board Connector Wiring Diagram 20PCB Detail A1P: Control PCBA2P: Display PCBLED 1 does not function.H2H1H3FGJBS

SiUS091133 Outdoor Unit: RXS15/18LVJURemoval Procedure 2905. Outdoor Unit: RXS15/18LVJU5.1 Removal of Outer PanelsProcedure Warning Be sure to wait fo

Outdoor Unit: RXS15/18LVJU SiUS091133291 Removal Procedure3Remove the 6 screws of the front panel.4Unfasten the right side hooks.5Unfasten the left si

SiUS091133 Outdoor Unit: RXS15/18LVJURemoval Procedure 2926Remove the screw of the stop valve cover.7Pull down the stop valve cover to unfasten the ho

Outdoor Unit: RXS15/18LVJU SiUS091133293 Removal Procedure5.2 Removal of Outdoor Fan / Fan MotorProcedure Warning Be sure to wait for 10 minutes or mo

SiUS091133 Outdoor Unit: RXS15/18LVJURemoval Procedure 2944Release the fan motor lead wire from the groove and the 2 hooks of the partition plate.5Rem

Outdoor Unit: RXS15/18LVJU SiUS091133295 Removal Procedure6Remove the outdoor fan. When reassembling, align the mark of the outdoor fan with the D-c

SiUS091133 Outdoor Unit: RXS15/18LVJURemoval Procedure 29610Open the hook and release the fan motor lead wire.11Remove the 4 screws and remove the fan

Outdoor Unit: RXS15/18LVJU SiUS091133297 Removal Procedure5.3 Removal of Electrical BoxProcedure Warning Be sure to wait for 10 minutes or more after

SiUS091133 Outdoor Unit: RXS15/18LVJURemoval Procedure 2984Remove the 2 screws of the conduit mounting plate.5Remove the conduit mounting plate.6Remov

Outdoor Unit: RXS15/18LVJU SiUS091133299 Removal Procedure8Remove the 4 screws of the right side panel.9Unfasten the hooks and remove the right side p

Outdoor Unit SiUS09113321 Printed Circuit Board Connector Wiring Diagram2. Outdoor Unit2.1 RXS09/12LVJUConnectors and Other PartsPCB (1): Filter PCBPC

SiUS091133 Outdoor Unit: RXS15/18LVJURemoval Procedure 30011Pull out the outdoor heat exchanger thermistor.12Disconnect the connector for the fan moto

Outdoor Unit: RXS15/18LVJU SiUS091133301 Removal Procedure14Release the fan motor lead wire from the groove and the 2 hooks of the partition plate.15D

SiUS091133 Outdoor Unit: RXS15/18LVJURemoval Procedure 30216Pull out the clamp.17Disconnect the connector for the electronic expansion valve coil [S20

Outdoor Unit: RXS15/18LVJU SiUS091133303 Removal Procedure19Remove the wire saddle.20Disconnect the connector for the four-way valve coil [S80]. When

SiUS091133 Outdoor Unit: RXS15/18LVJURemoval Procedure 30421Pull out the clamp.22Disconnect the relay connector for the compressor.23Release the harne

Outdoor Unit: RXS15/18LVJU SiUS091133305 Removal Procedure25Disconnect the connector for the thermistors [S90].26Pull out the clamp.  When reassembli

SiUS091133 Outdoor Unit: RXS15/18LVJURemoval Procedure 30628Pull out the clamp (3 locations). When reassembling, insert the 2 clamps into the bottom

Outdoor Unit: RXS15/18LVJU SiUS091133307 Removal Procedure29Remove the screw.30Remove the electrical box.StepProcedure Points(R16771)(R16772)Electrica

SiUS091133 Outdoor Unit: RXS15/18LVJURemoval Procedure 3085.4 Removal of PCBsProcedure Warning Be sure to wait for 10 minutes or more after turning of

Outdoor Unit: RXS15/18LVJU SiUS091133309 Removal Procedure3Pull out the clamp.  The compressor harness has a clamp.When reassembling, insert the clam

SiUS091133 Outdoor UnitPrinted Circuit Board Connector Wiring Diagram 22PCB Detail PCB (1): Filter PCBPCB (2): Main PCBPCB (3): Forced Operation Butto

SiUS091133 Outdoor Unit: RXS15/18LVJURemoval Procedure 3106Remove the 2 upper screws.7Remove the lower screw.8Lift the main PCB ASSY.StepProcedure Poi

Outdoor Unit: RXS15/18LVJU SiUS091133311 Removal Procedure9Unfasten the 4 hooks at the bottom.10Remove the 8 screws.11 Unfasten the 2 hooks. Refer to

SiUS091133 Outdoor Unit: RXS15/18LVJURemoval Procedure 3122. Remove the radiation fin.1 Remove the 2 screws on the bottom of the electrical box.2 Remo

Outdoor Unit: RXS15/18LVJU SiUS091133313 Removal Procedure3 Pull out the clamp.4 Release the harnesses from the groove.5 Remove the 2 screws.StepProce

SiUS091133 Outdoor Unit: RXS15/18LVJURemoval Procedure 3146 Unfasten the 3 hooks of the filter PCB ASSY.7 Remove the screw.8 Unfasten the 2 hooks.Step

Outdoor Unit: RXS15/18LVJU SiUS091133315 Removal Procedure9 Remove the filter PCB.  Refer to page 24 for detail.StepProcedure Points(R14370)

SiUS091133 Outdoor Unit: RXS15/18LVJURemoval Procedure 3165.5 Removal of Sound Blankets / ThermistorsProcedure Warning Be sure to wait for 10 minutes

Outdoor Unit: RXS15/18LVJU SiUS091133317 Removal Procedure2. Remove the sound blankets.1Remove the sound blanket (top upper).2Remove the sound blanket

SiUS091133 Outdoor Unit: RXS15/18LVJURemoval Procedure 3184Remove the sound blanket (outer). Since the piping ports are torn easily, remove the sound

Outdoor Unit: RXS15/18LVJU SiUS091133319 Removal Procedure7Cut the clamp and pull out the outdoor heat exchanger thermistor.StepProcedure PointsOutdoo

Outdoor Unit SiUS09113323 Printed Circuit Board Connector Wiring Diagram2.2 RXS15/18LVJUConnectors and Other PartsPCB (1): Filter PCBPCB (2): Main PCB

SiUS091133 Outdoor Unit: RXS15/18LVJURemoval Procedure 3205.6 Removal of Four-Way ValveProcedure Warning Be sure to wait for 10 minutes or more after

Outdoor Unit: RXS15/18LVJU SiUS091133321 Removal Procedure5.7 Removal of Electronic Expansion ValveProcedure Warning Be sure to wait for 10 minutes or

SiUS091133 Outdoor Unit: RXS15/18LVJURemoval Procedure 322 Before working, make sure that the refrigerant gas is empty in the circuit. Be sure to ap

Outdoor Unit: RXS15/18LVJU SiUS091133323 Removal Procedure5.8 Removal of CompressorProcedure Warning Be sure to wait for 10 minutes or more after turn

SiUS091133 Outdoor Unit: RXS15/18LVJURemoval Procedure 3243Remove the putty.WarningUse caution to avoid burning yourself with pipes and other parts th

Outdoor Unit: RXS15/18LVJU SiUS091133325 Removal Procedure5Heat up the brazed part of the discharge side and disconnect it.Cautions for restoration1.

SiUS091133 Outdoor Unit: RXS24LVJURemoval Procedure 3266. Outdoor Unit: RXS24LVJU6.1 Removal of Outer PanelsProcedure Warning Be sure to wait for 10 m

Outdoor Unit: RXS24LVJU SiUS091133327 Removal Procedure3Remove the suction grille.3. Remove the top panel.1Remove the 4 screws on the back and the scr

SiUS091133 Outdoor Unit: RXS24LVJURemoval Procedure 3283Lift the top panel and remove it.4. Remove the front panel (2).:This screw is M5(3) × 161Remo

Outdoor Unit: RXS24LVJU SiUS091133329 Removal Procedure2Slide the front panel (2) downward to unfasten the hook.3Remove the front panel (2).StepProced

SiUS091133 Outdoor UnitPrinted Circuit Board Connector Wiring Diagram 24PCB Detail PCB (1): Filter PCBPCB (2): Main PCB3P273862-3SW1S11FU1FU3 V2 V3SHL

SiUS091133 Outdoor Unit: RXS24LVJURemoval Procedure 3305. Remove the right side panel.1Remove the 2 screws.Slide the right side panel downward to unfa

Outdoor Unit: RXS24LVJU SiUS091133331 Removal Procedure2Remove the right side panel.6. Remove the front panel (1). Remove the discharge grille and th

SiUS091133 Outdoor Unit: RXS24LVJURemoval Procedure 3323Slide the discharge grille downward to unfasten the 2 hooks at the top.4Remove the discharge g

Outdoor Unit: RXS24LVJU SiUS091133333 Removal Procedure7Remove the screw at the bottom left of the front.8Remove the screw at the bottom of the left s

SiUS091133 Outdoor Unit: RXS24LVJURemoval Procedure 33410Lift the front panel (1) to unfasten the hook.11Remove the front panel (1). Be sure to detac

Outdoor Unit: RXS24LVJU SiUS091133335 Removal Procedure7. Remove the rear panel.1Remove the 2 screws, and remove the shield plate ASSY.2Release the cl

SiUS091133 Outdoor Unit: RXS24LVJURemoval Procedure 3364Remove the screw on the partition plate (2).5Slide the partition plate (2) to the left, and re

Outdoor Unit: RXS24LVJU SiUS091133337 Removal Procedure7Remove the wire fixing plate and the insulation.8Release the holder of the outdoor temperature

SiUS091133 Outdoor Unit: RXS24LVJURemoval Procedure 33810Remove the 3 screws on the rear panel.11Remove the screw on the bottom frame.12Remove the scr

Outdoor Unit: RXS24LVJU SiUS091133339 Removal Procedure13Lift the rear panel upward to unfasten the 2 hooks.14Remove the rear panel.StepProcedure Poin

Outdoor Unit SiUS09113325 Printed Circuit Board Connector Wiring Diagram2.3 RXS24LVJU, RK(X)S30/36LVJUConnectors and Other PartsPCB (1): Main PCBPCB (

SiUS091133 Outdoor Unit: RXS24LVJURemoval Procedure 3406.2 Removal of Electrical BoxProcedure Warning Be sure to wait for 10 minutes or more after tur

Outdoor Unit: RXS24LVJU SiUS091133341 Removal Procedure3 Remove the 2 screws to detach the ground wires.4Disconnect the connector for the fan motor [S

SiUS091133 Outdoor Unit: RXS24LVJURemoval Procedure 3426Disconnect the connectors of the front side.[S20]: electronic expansion valve coil[S40]: overl

Outdoor Unit: RXS24LVJU SiUS091133343 Removal Procedure9 Disconnect the relay connector for the compressor.10 Slide the electrical box to the left to

SiUS091133 Outdoor Unit: RXS24LVJURemoval Procedure 3446.3 Removal of PCBsProcedure Warning Be sure to wait for 10 minutes or more after turning off a

Outdoor Unit: RXS24LVJU SiUS091133345 Removal Procedure4Unfasten the hook on the right.5Open the terminal board.6Disconnect the harnesses from the ter

SiUS091133 Outdoor Unit: RXS24LVJURemoval Procedure 3467Disconnect the 2 harnesses for the reactor [HR1] [HR2].[HR1] : White[HR2] : Blue The harness

Outdoor Unit: RXS24LVJU SiUS091133347 Removal Procedure6.4 Removal of Fan MotorProcedure Warning Be sure to wait for 10 minutes or more after turning

SiUS091133 Outdoor Unit: RXS24LVJURemoval Procedure 3486.5 Removal of Coils / ThermistorsProcedure Warning Be sure to wait for 10 minutes or more afte

Outdoor Unit: RXS24LVJU SiUS091133349 Removal Procedure2 Remove the four-way valve coil.3. Remove the thermistors.1Pull out the outdoor heat exchanger

SiUS091133 Outdoor UnitPrinted Circuit Board Connector Wiring Diagram 26PCB Detail PCB (1): Main PCBPCB (2): Service Monitor PCB SW4-A and SW4-C has

SiUS091133 Outdoor Unit: RXS24LVJURemoval Procedure 3503Remove the sound blanket (upper top).4Remove the discharge pipe thermistor.StepProcedure Point

Outdoor Unit: RXS24LVJU SiUS091133351 Removal Procedure6.6 Removal of Sound BlanketsProcedure Warning Be sure to wait for 10 minutes or more after tur

SiUS091133 Outdoor Unit: RXS24LVJURemoval Procedure 3523Remove the screw and slightly push the partition plate (1) to the left for easy work.4Remove t

Outdoor Unit: RXS24LVJU SiUS091133353 Removal Procedure6Open the sound blanket (inner). The sound blanket is fragile. Be careful of the notches of th

SiUS091133 Outdoor Unit: RXS24LVJURemoval Procedure 3546.7 Removal of CompressorProcedure Warning Be sure to wait for 10 minutes or more after turning

Outdoor Unit: RXS24LVJU SiUS091133355 Removal Procedure4Remove the 2 nuts.  Disconnect the piping, referring to page 381.StepProcedure Points(R9472)

SiUS091133 Outdoor Unit: RKS30/36LVJU, RXS30/36LVJURemoval Procedure 3567. Outdoor Unit: RKS30/36LVJU, RXS30/36LVJUNote: The illustrations are for hea

Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU SiUS091133357 Removal Procedure3. Remove the top panel.1Remove the 9 screws and remove the top panel.4. Remov

SiUS091133 Outdoor Unit: RKS30/36LVJU, RXS30/36LVJURemoval Procedure 3583Remove the right side panel.5. Remove the front panel (2).1Remove the screw.S

Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU SiUS091133359 Removal Procedure2Slide the front panel (2) downward to unfasten the 3 hooks.3Remove the front

SiUS09113327 Function and ControlPart 4Function and Control1. Main Functions...

SiUS091133 Outdoor Unit: RKS30/36LVJU, RXS30/36LVJURemoval Procedure 3606. Remove the front panel (1). Remove the discharge grille and the outdoor fa

Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU SiUS091133361 Removal Procedure4Remove the 3 screws on the partition plate (1).5Remove the 2 screws at the bo

SiUS091133 Outdoor Unit: RKS30/36LVJU, RXS30/36LVJURemoval Procedure 3627Remove the screw at the bottom of the back side.8The front panel (1) has a ho

Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU SiUS091133363 Removal Procedure7. Remove the rear panel.1Cut the clamp.2Remove the 3 screws.34Remove the wire

SiUS091133 Outdoor Unit: RKS30/36LVJU, RXS30/36LVJURemoval Procedure 3645Remove the 2 screws on the partition plate (2).6Lift up slightly and remove t

Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU SiUS091133365 Removal Procedure8Remove the screw on the stop valve mounting plate.9Lift the rear panel upward

SiUS091133 Outdoor Unit: RKS30/36LVJU, RXS30/36LVJURemoval Procedure 36611Remove the rear panel.StepProcedure PointsRear panel(R16640)

Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU SiUS091133367 Removal Procedure7.2 Removal of Electrical BoxProcedure Warning Be sure to wait for 10 minutes

SiUS091133 Outdoor Unit: RKS30/36LVJU, RXS30/36LVJURemoval Procedure 3684Disconnect the connector for fan motor [S70] and release the 4 clamps attache

Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU SiUS091133369 Removal Procedure7 The compressor lead wire is fixed on the partition plate (1) with a clamp.8

SiUS091133 Main FunctionsFunction and Control 281. Main Functions1.1 Temperature ControlDefinitions of TemperaturesThe definitions of temperatures are

SiUS091133 Outdoor Unit: RKS30/36LVJU, RXS30/36LVJURemoval Procedure 37010 Release the thermistor harness from the hook at the bottom of electrical bo

Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU SiUS091133371 Removal Procedure7.3 Removal of PCBsProcedure Warning Be sure to wait for 10 minutes or more af

SiUS091133 Outdoor Unit: RKS30/36LVJU, RXS30/36LVJURemoval Procedure 3724Remove the screws of the terminal board and the ground wire.5Unfasten the hoo

Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU SiUS091133373 Removal Procedure8Disconnect the 2 harnesses for the reactor [HR1] [HR2].[HR1] : white[HR2] : b

SiUS091133 Outdoor Unit: RKS30/36LVJU, RXS30/36LVJURemoval Procedure 3747.4 Removal of Fan MotorProcedure Warning Be sure to wait for 10 minutes or mo

Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU SiUS091133375 Removal Procedure7.5 Removal of Coils / ThermistorsProcedure Warning Be sure to wait for 10 min

SiUS091133 Outdoor Unit: RKS30/36LVJU, RXS30/36LVJURemoval Procedure 3763Remove the sound blanket (top upper).4Remove the discharge pipe thermistor.5A

Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU SiUS091133377 Removal Procedure6Release the outdoor temperature thermistor.3. Remove the four-way valve coil.

SiUS091133 Outdoor Unit: RKS30/36LVJU, RXS30/36LVJURemoval Procedure 3787.6 Removal of Sound BlanketsProcedure Warning Be sure to wait for 10 minutes

Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU SiUS091133379 Removal Procedure4Remove the sound blanket (outer).5Open the sound blanket (inner).6Remove the

Main Functions SiUS09113329 Function and ControlInverter Principle To regulate the capacity, a frequency control is needed. The inverter makes it poss

SiUS091133 Outdoor Unit: RKS30/36LVJU, RXS30/36LVJURemoval Procedure 3807.7 Removal of CompressorProcedure Warning Be sure to wait for 10 minutes or m

Outdoor Unit: RKS30/36LVJU, RXS30/36LVJU SiUS091133381 Removal Procedure Before working, make sure that the refrigerant gas is empty in the circuit.

SiUS091133Trial Operation and Field Settings 382Part 8Trial Operation andField Settings1. Pump Down Operation...

Pump Down Operation SiUS091133383 Trial Operation and Field Settings1. Pump Down OperationOutline In order to protect the environment, be sure to cond

SiUS091133 Forced Cooling OperationTrial Operation and Field Settings 3842. Forced Cooling Operation Indoor Unit Outdoor Unit09/12 classItem Forced

Forced Cooling Operation SiUS091133385 Trial Operation and Field Settings15/18 class24/30/36 class123Screwdriver(R16616)Forced cooling operation [ON/O

SiUS091133 Trial OperationTrial Operation and Field Settings 3863. Trial OperationOutline 1. Measure the supply voltage and make sure that it falls wi

Field Settings SiUS091133387 Trial Operation and Field Settings4. Field Settings4.1 Model Type Setting This remote controller is common to the heat p

SiUS091133 Field SettingsTrial Operation and Field Settings 3884.3 When 2 Units are Installed in 1 RoomOutline When 2 indoor units are installed in 1

Field Settings SiUS091133389 Trial Operation and Field Settings4.4 Facility Setting Jumper and Switch (Cooling at Low Outdoor Temperature)Outline This

SiUS091133Table of Contents iii1.12 Other Functions... 402. Fun

SiUS091133 Main FunctionsFunction and Control 30Frequency Limits The following functions regulate the minimum and maximum frequency:Forced Cooling Ope

SiUS091133 Field SettingsTrial Operation and Field Settings 39024/30/36 classCaution 1. If the outdoor unit is installed where the outdoor heat exchan

Application of Silicon Grease to a Power Transistor and a Diode Bridge SiUS091133391 Trial Operation and Field Settings5. Application of Silicon Greas

SiUS091133Appendix 392Part 9Appendix1. Piping Diagrams...3931.1 Ind

Piping Diagrams SiUS091133393 Appendix1. Piping Diagrams1.1 Indoor unitFTXS09/12LVJUFTXS15/18LVJUINDOOR UNIT1/4 CuTHEAT EXCHANGERCROSS FLOW FANFIELD P

SiUS091133 Piping DiagramsAppendix 394FTXS24LVJUFTXS30/36LVJUINDOOR UNIT5/16 CuTDISTRIBUTORHEAT EXCHANGERCROSS FLOW FANMFAN MOTORHEADER1/2 CuTREFRIGER

Piping Diagrams SiUS091133395 AppendixFDXS09/12LVJUINDOOR UNIT(1/4CuT)HEAT EXCHANGERFIELD PIPING(1/4CuT)SIROCCO FANMFAN MOTOR(3/8CuT)FIELD PIPING(3/8C

SiUS091133 Piping DiagramsAppendix 3961.2 Outdoor UnitRXS09/12LVJURXS15/18LVJUEV1/4CuTOUTDOOR UNITMMUFFLER3/16CuT3/16CuTMUFFLER1/4CuT3/8CuTACCUMULATOR

Piping Diagrams SiUS091133397 AppendixRXS24LVJURKS30/36LVJU3D074442OUTDOOR UNITHEAT EXCHANGER5/16CuT5/16CuTHEADER5/16CuT5/16CuT5/16CuT5/16CuT5/16CuT1/

SiUS091133 Piping DiagramsAppendix 398RXS30/36LVJUOUTDOOR UNITHEAT EXCHANGER3/8CuT5/16CuTHEADER5/16CuT5/16CuT5/16CuT5/16CuT5/16CuT5/16CuTRECEIVER1/2Cu

Wiring Diagrams SiUS091133399 Appendix2. Wiring Diagrams2.1 Indoor UnitFTXS09/12LVJUFTXS15/18/24/30/36LVJU1FU1X1MPCB1PCB3S46S492H1F1UBLK11BLK1LED13BLK

Main Functions SiUS09113331 Function and Control3-D Airflow Alternative repetition of vertical and horizontal swing motions enables uniform airconditi

SiUS091133 Wiring DiagramsAppendix 400FDXS09/12LVJUX1MA1P11BLKA2PH12WHT 2®F1U3V1TRRED 3OUTDOOR3.15ALED LEDLEDS1S26GRNH211FIELD WIRING.H3PH2PH1PGRN/YLW

Wiring Diagrams SiUS091133401 Appendix2.2 Outdoor UnitRXS09/12LVJURXS15/18LVJUNOTE1. REFER TO THE NAMEPLATE FOR THE POWER REQUIREMENTS.FIELD WIRINGIND

SiUS091133 Wiring DiagramsAppendix 402RXS24LVJURKS30/36LVJU, RXS30/36LVJUL1RGRNZ6CGRNN=1YLWN=1X1MZ5CFU37BLUWHTREDM1FE1Z1CN=6E2L1HR2SA2HR1MRM203.15APOW

Wiring Diagrams SiUS091133403 Appendix

1645 Wallace Drive, Suite 110Carrollton, [email protected] Organization:DAIKIN INDUSTRIES, LTD.AIR CONDITION

SiUS091133 Main FunctionsFunction and Control 321.4 Fan Speed Control for Indoor UnitOutline Phase control and fan speed control contains 9 steps: LLL

Main Functions SiUS09113333 Function and Control1.5 Program Dry OperationOutline Program dry operation removes humidity while preventing the room temp

SiUS091133 Main FunctionsFunction and Control 341.6 Automatic OperationOutline Automatic Cooling / Heating FunctionWhen the automatic operation is sel

Main Functions SiUS09113335 Function and Control1.7 Thermostat ControlThermostat control is based on the difference between the room thermistor temper

SiUS091133 Main FunctionsFunction and Control 361.8 NIGHT SET ModeOutline When the OFF timer is set, the NIGHT SET Mode is automatically activated. Th

Main Functions SiUS09113337 Function and Control1.9 ECONO OperationOutline ECONO operation reduces the maximum operating current and the power consump

SiUS091133 Main FunctionsFunction and Control 381.10 INTELLIGENT EYE Operation (FTXS Series)Outline This function detects the existence of humans in t

Main Functions SiUS09113339 Function and Control1.11 Inverter POWERFUL OperationOutline In order to exploit the cooling and heating capacity to full e

SiUS091133iv Table of Contents2. Problem Symptoms and Measures...903. Service Check Function .

SiUS091133 Main FunctionsFunction and Control 401.12 Other Functions1.12.1 Hot-Start FunctionIn order to prevent the cold air blast that normally come

Function of Thermistor SiUS09113341 Function and Control2. Function of Thermistor(1) Outdoor Heat Exchanger Thermistor 1. The outdoor heat exchanger t

SiUS091133 Control SpecificationFunction and Control 423. Control Specification3.1 Mode HierarchyOutline There are 3 modes; normal operation mode, for

Control Specification SiUS09113343 Function and Control3.2 Frequency ControlOutline Frequency is determined according to the difference between the ro

SiUS091133 Control SpecificationFunction and Control 442. Determine upper limit frequency The minimum value is set as an upper limit frequency among

Control Specification SiUS09113345 Function and Control3.3 Controls at Mode Changing / Start-up3.3.1 Preheating OperationOutline The inverter operatio

SiUS091133 Control SpecificationFunction and Control 463.3.5 Compressor Protection FunctionWhen turning the compressor from OFF to ON, the upper limit

Control Specification SiUS09113347 Function and Control3.5 Input Current ControlOutline The microcomputer calculates the input current while the compr

SiUS091133 Control SpecificationFunction and Control 483.6 Freeze-up Protection ControlOutline During cooling operation, the signal sent from the indo

Control Specification SiUS09113349 Function and Control3.8 Outdoor Fan Control1. Fan ON control to cool down the electrical boxThe outdoor fan is turn

SiUS091133Table of Contents vPart 7Removal Procedure...1551. Indoor Unit: FTXS09/12LVJU...

SiUS091133 Control SpecificationFunction and Control 503.10 Defrost ControlOutline Defrosting is carried out by the cooling cycle (reverse cycle). The

Control Specification SiUS09113351 Function and Control3.11 Electronic Expansion Valve ControlOutline The following items are included in the electron

SiUS091133 Control SpecificationFunction and Control 523.11.1 Fully Closing with Power ONThe electronic expansion valve is initialized when turning on

Control Specification SiUS09113353 Function and Control3.11.7 Control for Disconnection of the Discharge Pipe ThermistorOutline The disconnection of t

SiUS091133 Control SpecificationFunction and Control 543.12 Malfunctions3.12.1 Sensor Malfunction DetectionSensor malfunction may occur in the thermis

SiUS09113355 Operation ManualPart 5Operation Manual1. System Configuration...

SiUS091133 System ConfigurationOperation Manual 561. System ConfigurationAfter installation and trial operation of the room air conditioner are comple

FTXS Series SiUS09113357 Operation Manual2. FTXS Series2.1 Remote ControllerNames of PartsRemote ControllerSignal transmitterFAN setting buttonPOWERFU

SiUS091133 FTXS SeriesOperation Manual 58 Open the front coverQUIET buttonOFF TIMER buttonTIMER CANCEL buttonSELECT buttonMODE selector button ECONO

FTXS Series SiUS09113359 Operation Manual2.2 AUTO · DRY · COOL · HEAT · FAN OperationAUTO · DRY · COOL · HEAT · FAN OperationThe air conditioner opera

SiUS091133vi Table of Contents5.7 Removal of Electronic Expansion Valve... 3215.8 Removal of Compresso

SiUS091133 FTXS SeriesOperation Manual 60 To change the temperature settingPress or .• The displayed items on the LCD will change when

FTXS Series SiUS09113361 Operation Manual2.3 Adjusting the Airflow Direction and RateAdjusting the Airflow Direction and RateYou can adjust the airflo

SiUS091133 FTXS SeriesOperation Manual 62FTXS09/12LVJU Notes on the angles of the louvers• The louvers swinging range depends on the operation. (See

FTXS Series SiUS09113363 Operation ManualFTXS15/18/24/30/36LVJU To adjust the airflow rate settingPress .• Each pressing of advances the

SiUS091133 FTXS SeriesOperation Manual 642.4 COMFORT AIRFLOW / INTELLIGENT EYE OperationCOMFORT AIRFLOW / INTELLIGENT EYE Operation COMFORT AIRFLOW o

FTXS Series SiUS09113365 Operation Manual To start operationPress and select the desired mode.Press and select “blank” on the

SiUS091133 FTXS SeriesOperation Manual 662.5 POWERFUL OperationPOWERFUL OperationPOWERFUL operation quickly maximizes the cooling (heating) effect in

FTXS Series SiUS09113367 Operation Manual2.6 OUTDOOR UNIT QUIET OperationOUTDOOR UNIT QUIET OperationOUTDOOR UNIT QUIET operation lowers the noise lev

SiUS091133 FTXS SeriesOperation Manual 682.7 ECONO OperationECONO OperationECONO operation is a function which enables efficient operation by limiting

FTXS Series SiUS09113369 Operation Manual2.8 OFF TIMER OperationOFF TIMER OperationTimer functions are useful for automatically switching the air cond

SiUS091133Table of Contents vii

SiUS091133 FTXS SeriesOperation Manual 702.9 ON TIMER OperationON TIMER Operation1. Press .• “ ” and day of the week are no longer dis

FTXS Series SiUS09113371 Operation Manual2.10 WEEKLY TIMER OperationWEEKLY TIMER OperationUp to 4 timer settings can be saved for each day of the week

SiUS091133 FTXS SeriesOperation Manual 72WEEKLY TIMER Operation To use WEEKLY TIMER operationSetting mode• Make sure the day of the week and time are

FTXS Series SiUS09113373 Operation ManualNOTE7. Press . 8. Press to select the desired temperature.6. Press to select the de

SiUS091133 FTXS SeriesOperation Manual 74WEEKLY TIMER Operation• A reservation made once can be copied to another day of the week. The whole reservati

FTXS Series SiUS09113375 Operation Manual To deactivate WEEKLY TIMER operation• The reservation can be confirmed.• The day of the week and the reserv

SiUS091133 FTXS SeriesOperation Manual 76 To delete reservationsThe individual reservationAll reservationsThe reservations for each day of the week1.

FDXS Series SiUS09113377 Operation Manual3. FDXS Series3.1 Remote ControllerNames of PartsRemote ControllerSignal transmitterReceiverFAN setting butto

SiUS091133 FDXS SeriesOperation Manual 78ECONO button• ECONO operation.Page 16ON TIMER buttonPage 18CLOCK buttonSELECT buttonPage 17,18QUIET buttonPag

FDXS Series SiUS09113379 Operation Manual3.2 AUTO · DRY · COOL · HEAT · FAN Operation1. Press and select an operation mode.• Each pressing

Safety Considerations SiUS091133viii1. Safety ConsiderationsRead these SAFETY CONSIDERATIONS carefully before performing any repair work. Comply with

SiUS091133 FDXS SeriesOperation Manual 80COOL operation HEAT operation AUTO operation DRY or FAN operation Operating conditionsMODE Operating conditi

FDXS Series SiUS09113381 Operation Manual3.3 Adjusting the Airflow RateAdjusting the Airflow Rate To adjust the airflow rate settingPress .• Ea

SiUS091133 FDXS SeriesOperation Manual 823.4 POWERFUL OperationPOWERFUL OperationPOWERFUL operation quickly maximizes the cooling (heating) effect in

FDXS Series SiUS09113383 Operation Manual3.5 OUTDOOR UNIT QUIET OperationOUTDOOR UNIT QUIET OperationOUTDOOR UNIT QUIET operation lowers the noise lev

SiUS091133 FDXS SeriesOperation Manual 843.6 ECONO OperationECONO OperationECONO operation is a function which enables efficient operation by limiting

FDXS Series SiUS09113385 Operation Manual3.7 OFF TIMER OperationOFF TIMER OperationTimer functions are useful for automatically switching the air cond

SiUS091133 FDXS SeriesOperation Manual 863.8 ON TIMER OperationON TIMER Operation To use ON TIMER operation• Check that the clock is correct.If not,

SiUS09113387 Service DiagnosisPart 6Service Diagnosis1. Troubleshooting with LED...

SiUS091133Service Diagnosis 885.8 “Inverter Checker” Check ...... 1465.9 Rotation P

Troubleshooting with LED SiUS09113389 Service Diagnosis1. Troubleshooting with LED1.1 Indoor UnitOperation Lamp The operation lamp blinks when any of