Daikin FTXS71BVMA Service Manual

Inverter PairWall Mounted Type B-Series[Applied Models]zzzzInverter Pair : Cooling Only zzzzInverter Pair : Heat PumpzzzzNon-Inverter Pair : Cooling O

Si04-306List of Functions 1Part 1Part 1Part 1Part 1List of FunctionsList of FunctionsList of FunctionsList of Functions1. List of Functions...

Si04-306 Problem Symptoms and MeasuresService Diagnosis 912. Problem Symptoms and MeasuresSymptom Check Item Details of Measure ReferencePageNone of t

Service Check Function Si04-30692 Service Diagnosis3. Service Check FunctionIn the ARC433A series remote controller, the temperature display sections

Si04-306 TroubleshootingService Diagnosis 934. Troubleshooting4.1 Error Codes and Description★: Displayed only when system-down occurs.Code Indication

Troubleshooting Si04-30694 Service Diagnosis4.2 Indoor Unit PCB AbnormalityRemote Controller DisplayA1Method of Malfunction DetectionEvaluation of zer

Si04-306 TroubleshootingService Diagnosis 954.3 Freeze-up Protection Control or High Pressure ControlRemote Controller DisplayA5Method of Malfunction

Troubleshooting Si04-30696 Service DiagnosisTroubleshootingCheck No.6Refer to P.128Note: If the outside temperature is below –10°C in the cooling mode

Si04-306 TroubleshootingService Diagnosis 974.4 Fan Motor (DC Motor) or Related AbnormalityRemote Controller DisplayA6Method of Malfunction DetectionT

Troubleshooting Si04-30698 Service DiagnosisTroubleshootingCheck No.01Refer to P.125Check No.02Refer to P.125Replace fan motor.Replace indoor unit PCB

Si04-306 TroubleshootingService Diagnosis 994.5 Thermistor or Related Abnormality (Indoor Unit)Remote Controller DisplayC4, C9 Method of Malfunction D

Troubleshooting Si04-306100 Service Diagnosis4.6 Signal Transmission Error (between Indoor and Outdoor Units)Remote Controller DisplayU4Method of Malf

List of Functions Si04-3062 List of Functions1. List of Functions1.1 R410A SeriesCategory FunctionsFTKS50·60·71BVMARKS50·60·71BVMAFTXS50·60·71BVMARXS5

Si04-306 TroubleshootingService Diagnosis 1014.7 OL Activation (Compressor Overload)Remote Controller DisplayE5Method of Malfunction DetectionA compre

Troubleshooting Si04-306102 Service Diagnosis4.8 Compressor LockRemote Controller DisplayE6Method of Malfunction DetectionA compressor lock is detecte

Si04-306 TroubleshootingService Diagnosis 1034.9 DC Fan LockRemote Controller DisplayE7Method of Malfunction DetectionA fan motor or related error is

Troubleshooting Si04-306104 Service Diagnosis4.10 Input Over Current DetectionRemote Controller DisplayE8Method of Malfunction DetectionAn input over-

Si04-306 TroubleshootingService Diagnosis 105TroubleshootingCheck No.7Refer to P.129Check No.8Refer to P.130Check No.14Refer to P.133Replace the outdo

Troubleshooting Si04-306106 Service Diagnosis4.11 Four Way Valve AbnormalityRemote Controller DisplayEAMethod of Malfunction DetectionThe room tempera

Si04-306 TroubleshootingService Diagnosis 107TroubleshootingCheck No.5Refer to P.127Check No.6Refer to P.128Check No.11Refer to P.131Correct.Reconnect

Troubleshooting Si04-306108 Service Diagnosis4.12 Discharge Pipe Temperature ControlRemote Controller DisplayF3Method of Malfunction DetectionThe disc

Si04-306 TroubleshootingService Diagnosis 1094.13 Position Sensor AbnormalityRemote Controller DisplayH6Method of Malfunction DetectionA compressor st

Troubleshooting Si04-306110 Service Diagnosis4.14 CT or Related AbnormalityRemote Controller DisplayH8Method of Malfunction DetectionA CT or related e

Si04-306 List of FunctionsList of Functions 3Category FunctionsFTKS50·60·71BVMBRKS50·60·71BVMBFTXS50·60·71BVMBRXS50·60·71BVM\BCategory FunctionsFTKS50

Si04-306 TroubleshootingService Diagnosis 111TroubleshootingCheck No.12Refer to P.132Turn off the power and turn it on again.Check No. 12Check the cap

Troubleshooting Si04-306112 Service Diagnosis4.15 Thermistor or Related Abnormality (Outdoor Unit)Remote Controller DisplayP4, J3, J6, H9Method of Mal

Si04-306 TroubleshootingService Diagnosis 113TroubleshootingCheck No.6Refer to P.128P4 : Radiation fin thermistorJ3 : Discharge pipe thermistorJ6 : Ou

Troubleshooting Si04-306114 Service Diagnosis4.16 Electrical Box Temperature RiseRemote Controller DisplayL3Method of Malfunction DetectionAn electric

Si04-306 TroubleshootingService Diagnosis 115TroubleshootingCheck No.6Refer to P.128Check No.7Refer to P.129Check No.9Refer to P.130Turn off the power

Troubleshooting Si04-306116 Service Diagnosis4.17 Radiation Fin Temperature RiseRemote Controller DisplayL4Method of Malfunction DetectionA radiation

Si04-306 TroubleshootingService Diagnosis 117TroubleshootingCheck No.6Refer to P.128Check No.7Refer to P.129Check No.9Refer to P.130Turn off the power

Troubleshooting Si04-306118 Service Diagnosis4.18 Output Over Current DetectionRemote Controller DisplayL5Method of Malfunction DetectionAn output ove

Si04-306 TroubleshootingService Diagnosis 119TroubleshootingCheck No.7Refer to P.129Check No.8Refer to P.130Check No.13Refer to P.132Fully open the st

Troubleshooting Si04-306120 Service Diagnosis4.19 Insufficient GasRemote Controller DisplayU0Method of Malfunction DetectionGas shortage detection I :

List of Functions Si04-3064 List of FunctionsCategory FunctionsFTS50·60BVMBRS50·60BVMBFTYS50·60BVMBRYS50·60BVMBCategory FunctionsFTS50·60BVMBRS50·60BV

Si04-306 TroubleshootingService Diagnosis 121TroubleshootingCheck No.4Refer to P.126Check No.6Refer to P.128Reconnect in position.Open the stop valve.

Troubleshooting Si04-306122 Service Diagnosis4.20 Low-voltage DetectionRemote Controller DisplayU2Method of Malfunction DetectionAn abnormal voltage r

Si04-306 TroubleshootingService Diagnosis 1234.21 High Pressure Control in CoolingRemote Controller DisplayF6Method of Malfunction DetectionHigh-press

Troubleshooting Si04-306124 Service DiagnosisTroubleshootingCheck No.4Refer to P.126Check No.6Refer to P.128Check No.7Refer to P.129Check No.9Refer to

Si04-306 CheckService Diagnosis 1255. Check5.1 How to Check5.1.1 Fan Motor Connector Output CheckCheck No.01 1. Check connector connection.2. Check mo

Check Si04-306126 Service Diagnosis5.1.2 Electronic Expansion Valve CheckCheck No.4 Conduct the followings to check the electronic expansion valve (EV

Si04-306 CheckService Diagnosis 1275.1.3 Four Way Valve Performance CheckCheck No.5Turn off the power and turn it on again.Start the heating-mode run.

Check Si04-306128 Service Diagnosis5.1.4 Thermistor Resistance CheckCheck No.6 Remove the connectors of the thermistors on the PCB, and measure the re

Si04-306 CheckService Diagnosis 1295.1.5 Installation Condition CheckCheck No.7Installation condition checkNormalChange the position of the air discha

Check Si04-306130 Service Diagnosis5.1.6 Discharge Pressure CheckCheck No.85.1.7 Outdoor Unit Fan System Check (With DC Motor)Check No.9Discharge pres

Si04-306 List of FunctionsList of Functions 51.2 R22 SeriesCategory FunctionsFTKD50·60·71BVM(A)RKD50·60·71BVM(A)FTXD50·60·71BVMARXD50·60·71BVMACategor

Si04-306 CheckService Diagnosis 1315.1.8 Power Supply Waveforms CheckCheck No.10 Measure the power supply waveform between pins 1 and 3 on the termina

Check Si04-306132 Service Diagnosis5.1.10 Capacitor Voltage CheckCheck No.12 Before this checking, be sure to check the main circuit for short-circuit

Si04-306 CheckService Diagnosis 1335.1.12 Main Circuit Electrolytic Capacitor CheckCheck No.14Checking the main circuit electrolytic capacitorzNever

Check Si04-306134 Service Diagnosis

Si04-306Removal Procedure 135Part 7Part 7Part 7Part 7Removal ProcedureRemoval ProcedureRemoval ProcedureRemoval Procedure1. Indoor Unit...

Indoor Unit Si04-306136 Removal Procedure1. Indoor Unit1.1 Removal of the Air Filter / Front PanelProcedure Warning Be sure to wait 10 minutes or

Si04-306 Indoor UnitRemoval Procedure 137The right and left filters are interchangeable.Insert the air filters along grooves when installing.Set th

Indoor Unit Si04-306138 Removal Procedure4. Remove the front panel.1While opening the front panel further than it stops, release both axes and remove

Si04-306 Indoor UnitRemoval Procedure 1391.2 Removal of the Front GrilleProcedure Warning Be sure to wait 10 minutes or more after turning off al

Indoor Unit Si04-306140 Removal Procedure2Undo the three hooks on the top of the front grille.The front grille has three hooks on the center and the

List of Functions Si04-3066 List of FunctionsCategory FunctionsFTKD50·60·71BVMTRKD50·60·71BVMTFTXD50·60·71BVMTRXD50·60·71BVMTCategory FunctionsFTKD50·

Si04-306 Indoor UnitRemoval Procedure 1411.3 Removal of the Horizontal Blades / Vertical BladesProcedure Warning Be sure to wait 10 minutes or mo

Indoor Unit Si04-306142 Removal Procedure2. Remove the vertical blades.1Undo the right and left pivots.2Undo the three claws.3Pull the vertical blades

Si04-306 Indoor UnitRemoval Procedure 1431.4 Removal of the Electrical Box / PCB / Swing MotorProcedure Warning Be sure to wait 10 minutes or mor

Indoor Unit Si04-306144 Removal Procedure4. Remove the electrical box.1Disconnect the four connection wirings. Loosen the screw and remove the termina

Si04-306 Indoor UnitRemoval Procedure 1455Dislocate the electrical box to the left and undo the back claw. The electrical box has a claw on its back.

Indoor Unit Si04-306146 Removal Procedure9Press the receiver units down and release the claws on the upper side, and then undo the claws on the lower

Si04-306 Indoor UnitRemoval Procedure 1475. Remove the control PCB.1Undo the two claws on the lower side, and then the two claws on the upper side. Re

Indoor Unit Si04-306148 Removal Procedure7. Remove the swing motor for vertical blades.1Release the swing axis on the right side.Releasing the swing

Si04-306 Indoor UnitRemoval Procedure 1491.5 Removal of the Heat ExchangerProcedure Warning Be sure to wait 10 minutes or more after turning off

Indoor Unit Si04-306150 Removal Procedure2. Remove the indoor unit.1Detach the indoor unit from the installation plate.3. Remove the piping fixture.1R

Si04-306 List of FunctionsList of Functions 7Category FunctionsFTKD18·24·28BVMSRKD18·24·28BVMSCategory FunctionsFTKD18·24·28BVMSRKD18·24·28BVMSBasic F

Si04-306 Indoor UnitRemoval Procedure 1512Release the claws on the left side.3Push the fixing claws on the right side and release.4Pull the heat excha

Indoor Unit Si04-306152 Removal Procedure1.6 Removal of the Fan Rotor / Fan MotorProcedure Warning Be sure to wait 10 minutes or more after turni

Si04-306 Indoor UnitRemoval Procedure 1533. Remove the fan motor.1Remove the fan motor.Reassembling the fan motor(1) When reassembling the fan rotor,

Outdoor Unit Si04-306154 Removal Procedure2. Outdoor Unit2.1 Removal of the Panels and PlatesProcedure Warning Be sure to wait 10 minutes or more

Si04-306 Outdoor UnitRemoval Procedure 155The front grille has four claws. Slide the discharge grille upwards and remove it.3Loosen the six screws of

Outdoor Unit Si04-306156 Removal Procedure5Undo the right side claw, and then the left side claws.Remove the front panel.Lift the front panel and rem

Si04-306 Outdoor UnitRemoval Procedure 1572. Remove the stop valve cover.1Loosen the screw of the stop valve cover.2Pull down the stop valve cover to

Outdoor Unit Si04-306158 Removal Procedure2.2 Removal of the Fan Motor / Propeller FanProcedure Warning Be sure to wait 10 minutes or more after

Si04-306 Outdoor UnitRemoval Procedure 1592. Remove the fan motor.1Disconnect the connector for fan motor (S70).2The illustration shows arrangement of

Outdoor Unit Si04-306160 Removal Procedure3Unscrew the washer-fitted nut (M10) of the propeller fan with a spanner.Align mark of the propeller fan

List of Functions Si04-3068 List of Functions

Si04-306 Outdoor UnitRemoval Procedure 1615Pull the fan motor out.Put the lead wire through the back of the motor when reassembling. (so as not to be

Outdoor Unit Si04-306162 Removal Procedure2.3 Removal of the PCB / Electrical BoxProcedure Warning Be sure to wait 10 minutes or more after turni

Si04-306 Outdoor UnitRemoval Procedure 163Insert the two claws of the lower part and the one claw of the upper back when reassembling.2. Disconnect h

Outdoor Unit Si04-306164 Removal Procedure2Push the claw up to release the cable way board. Open the cable way board.3Disconnect the harnesses from th

Si04-306 Outdoor UnitRemoval Procedure 1655Loosen the screw of the control PCB.6Undo the two claws and release the control PCB from the ditch of the

Outdoor Unit Si04-306166 Removal Procedure9Disconnect the connectors.S31: to the SPMS32: to the SPMS33: to the MIDS71: to the MIDS91: fin thermistor10

Si04-306 Outdoor UnitRemoval Procedure 16711Disconnect the relaying wire connector for the compressor.12Release the clamp by pliers.13Disconnect the r

Outdoor Unit Si04-306168 Removal Procedure14Pull the clamp and draw the thermistor harness out from the back of the electrical box. 15Loosen the screw

Si04-306 Outdoor UnitRemoval Procedure 16916Release the clamp of the four way valve harness.17Lift the electrical box and remove it.StepProcedure Poin

Outdoor Unit Si04-306170 Removal Procedure2.4 Removal of the ReactorProcedure Warning Be sure to wait 10 minutes or more after turning off all po

Si04-306Specifications 9Part 2Part 2Part 2Part 2SpecificationsSpecificationsSpecificationsSpecifications1. Specifications ...

Si04-306 Outdoor UnitRemoval Procedure 1713Lift the partition plate and remove it.4Loosen the screw.Slide the reactor and remove it from the partition

Outdoor Unit Si04-306172 Removal Procedure2.5 Removal of the Sound BlanketProcedure Warning Be sure to wait 10 minutes or more after turning off

Si04-306 Outdoor UnitRemoval Procedure 1734Remove the sound blanket (side-outer).Since the piping ports on the sound blanket (side-outer) are torn ea

Outdoor Unit Si04-306174 Removal Procedure2.6 Removal of the Four Way ValveProcedure Warning Be sure to wait 10 minutes or more after turning off

Si04-306 Outdoor UnitRemoval Procedure 1752.7 Removal of the Electronic Expansion ValveProcedure Warning Be sure to wait 10 minutes or more after

Outdoor Unit Si04-306176 Removal Procedure2.8 Removal of the CompressorProcedure Warning Be sure to wait 10 minutes or more after turning off all

Si04-306 Outdoor UnitRemoval Procedure 1773Unscrew the nut of the compressor.4Remove the putty of the accumulator.Before working, make sure that the

Outdoor Unit Si04-306178 Removal Procedure

Si04-306Others 179Part 8Part 8Part 8Part 8OthersOthersOthersOthers1. Others ...

Others Si04-306180 Others1. Others1.1 Test Run from the Remote ControllerFor Heat pump In cooling mode, select the lowest programmable temperature; in

Specifications Si04-30610 Specifications1. Specifications1.1 Cooling Only - R410A Series240V, 50HzNotes: MAX. interunit piping length: 30m MIN. inte

Si04-306 OthersOthers 1811.2 Jumper Settings1.2.1 When Two Units are Installed in One RoomWhen two indoor units are installed in one room, the two wir

Others Si04-306182 Others

Si04-306Appendix 183Part 9Part 9Part 9Part 9AppendixAppendixAppendixAppendix1. Piping Diagrams...

Piping Diagrams Si04-306184 Appendix1. Piping Diagrams1.1 Indoor UnitsFTK(X)S 50/60 BVMA, FTK(X)S 50/60 BVMB, FT(Y)S 50/60 BVMBFTKD50BVM, FTK(X)D50BVM

Si04-306 Piping DiagramsAppendix 185FTKD71BVM, FTK(X)D71BVMA, FTK(X)D71BVMT, FTKD 24/28 BVMS(15.9CuT)FIELD PIPINGFIELD PIPING(9.5CuT)CROSS FLOW FANFAN

Piping Diagrams Si04-306186 Appendix1.2 Outdoor Units1.2.1 Cooling OnlyRKS50BVMA, RKS50BVMB, RS50BVMBRKS 60/71 BVMA, RKS 60/71 BVMB, RS60BVMBOUTDOOR U

Si04-306 Piping DiagramsAppendix 187RKD50BVM, RKD50BVMA, RKD50BVMTRKD 60/71 BVM, RKD 60/71 BVMA, RKD 60/71 BVMT, RKD 18/24/28 BVMSOUTDOOR UNIT9.5CuT12

Piping Diagrams Si04-306188 Appendix1.2.2 Heat PumpRXS50BVMA, RXS50BVMB, RYS50BVMBRXS 60/71 BVMA, RXS 60/71 BVMB, RYS60BVMBOUTDOOR UNIT12.7CuTHEAT EXC

Si04-306 Piping DiagramsAppendix 189RXD50BVMA, RXD50BVMTRXD 60/71 BVMA, RXD 60/71 BVMTOUTDOOR UNIT15.9CuTHEAT EXCHANGERTHERMISTOR12.7CuTDISCHARGE PIPE

Wiring Diagrams Si04-306190 Appendix2. Wiring Diagrams2.1 Indoor UnitsFTK(X)S50BVMA, FTK(X)S50BVMBFTK(X)S 60/71 BVMA, FTK(X)S 60/71 BVMBFTKD 50/60/71

Si04-306Table of Contents iInverter PairInverter PairInverter PairInverter PairB-SeriesB-SeriesB-SeriesB-SerieszCooling OnlyIndoor Unit<R410A>FT

Si04-306 SpecificationsSpecifications 11230V, 50HzNotes: MAX. interunit piping length: 30m MIN. interunit piping length: 1.5m MAX. interunit height

Si04-306 Wiring DiagramsAppendix 191FT(Y)S50BVMBFT(Y)S60BVMBCONTROLLERWIRELESSREMOTEPCB4PCB3LED1H1PR1Tt˚S37S38LED2H2PPCB2S27S1WRECEIVERSIGNALS26S21S29

Wiring Diagrams Si04-306192 AppendixFTKD 18/24/28 BVMS

Si04-306 Wiring DiagramsAppendix 1932.2 Outdoor UnitsRKS 50/60/71 BVMA, RKS 50/60/71 BVMB, RS 50/60 BVMBRKD 50/60/71 BVM, RKD 50/60/71 BVMA, RKD 50/60

Wiring Diagrams Si04-306194 AppendixRKD 18/24/28 BVMS

Si04-306Index iIndexIndexIndexIndexNumerics00 ...933 minutes stand-by ...

Si04-306ii IndexC9 ...99E5 ...

Si04-306Index iiimounting plate for the bearing ...153Nnames of parts ...

Si04-306iv Indexthermistor or related abnormality (outdoor unit) ...112thermistor resistance check ...128Timer operati

Si04-306Drawings & Flow Charts vDrawings & Flow ChartsDrawings & Flow ChartsDrawings & Flow ChartsDrawings & Flow ChartsAARC433A s

Si04-306vi Drawings & Flow ChartsFTKD18BVMS ...184FTKD50BVM ...

Specifications Si04-30612 Specifications230V, 50HzNotes: MAX. interunit piping length: 30m MIN. interunit piping length: 1.5m MAX. interunit height

Head office:Umeda Center Bldg., 4-12, Nakazaki-Nishi 2-chome,Kita-ku, Osaka, 530-8323 JapanTokyo office:Shinjuku Sumitomo Bldg., 6-1 Nishi-Shinjuku2-c

Si04-306 SpecificationsSpecifications 131.2 Cooling Only - R22 Series220-230-240V, 50Hz / 220-230V, 60HzNotes: MAX. interunit piping length: 30m MAX

Specifications Si04-30614 Specifications220-230-240V, 50Hz / 220-230V, 60HzNotes: MAX. interunit piping length: 30m MAX. interunit height difference

Si04-306 SpecificationsSpecifications 15220V, 60HzNotes: MAX. interunit piping length: 30m MAX. interunit height difference: 20m Amount of addition

Specifications Si04-30616 Specifications220V, 50HzNotes: MAX. interunit piping length: 30m MAX. interunit height difference: 20m Amount of addition

Si04-306 SpecificationsSpecifications 171.3 Heat Pump - R410A Series240V, 50HzNotes: MAX. interunit piping length: 30m MIN. interunit piping length:

Specifications Si04-30618 Specifications240V, 50HzNotes: MAX. interunit piping length: 30m MIN. interunit piping length: 1.5m MAX. interunit height

Si04-306 SpecificationsSpecifications 19230V, 50HzNotes: MAX. interunit piping length: 30m MIN. interunit piping length: 1.5m MAX. interunit height

Specifications Si04-30620 Specifications230V, 50HzNotes: MAX. interunit piping length: 30m MIN. interunit piping length: 1.5m MAX. interunit height

Si04-306ii Table of Contents1. Introduction ...v1.1 Safety C

Si04-306 SpecificationsSpecifications 21230V, 50HzNotes: MAX. interunit piping length: 30m MIN. interunit piping length: 1.5m MAX. interunit height

Specifications Si04-30622 Specifications1.4 Heat Pump - R22 Series220-230-240V, 50Hz / 220-230V, 60HzNotes: MAX. interunit piping length: 30m MAX. i

Si04-306 SpecificationsSpecifications 23220-230-240V, 50Hz / 220-230V, 60HzNotes: MAX. interunit piping length: 30m MAX. interunit height difference

Specifications Si04-30624 Specifications220V, 60HzNotes: MAX. interunit piping length: 30m MAX. interunit height difference: 20m Amount of addition

Si04-306 SpecificationsSpecifications 25220V, 60HzNotes: MAX. interunit piping length: 30m MAX. interunit height difference: 20m Amount of addition

Specifications Si04-30626 Specifications

Si04-306Printed Circuit Board Connector Wiring Diagram 27Part 3Part 3Part 3Part 3Printed Circuit BoardPrinted Circuit BoardPrinted Circuit BoardPrinte

Printed Circuit Board Connector Wiring Diagram Si04-30628 Printed Circuit Board Connector Wiring Diagram1. Printed Circuit Board Connector Wiring Diag

Si04-306 Printed Circuit Board Connector Wiring DiagramPrinted Circuit Board Connector Wiring Diagram 29PCB Detail PCB(1): Control PCB (indoor unit)PC

Printed Circuit Board Connector Wiring Diagram Si04-30630 Printed Circuit Board Connector Wiring Diagram1.2 Outdoor UnitConnectorsNote: Other Designat

Si04-306Table of Contents iii3.13 Malfunctions ...593.14 Force

Si04-306 Printed Circuit Board Connector Wiring DiagramPrinted Circuit Board Connector Wiring Diagram 31PCB Detail PCB(1): Control PCB (outdoor unit)E

Printed Circuit Board Connector Wiring Diagram Si04-30632 Printed Circuit Board Connector Wiring DiagramMIDSPMS34S72(R2868)S70FU201 (3.15A)(R2869)CN14

Si04-306Function and Control 33Part 4Part 4Part 4Part 4 Function and Control Function and Control Function and Control Function and Control1. Main Fun

Main Functions Si04-30634 Function and Control1. Main FunctionsNote: See the list of functions for the functions applicable to different models.1.1 Fr

Si04-306 Main FunctionsFunction and Control 35Inverter Features The inverter provides the following features:The regulating capacity can be changed a

Main Functions Si04-30636 Function and Control1.2 Power-Airflow Dual Flaps, Wide Angle Louvers and Auto-SwingPower-airflow Dual FlapsThe large flaps s

Si04-306 Main FunctionsFunction and Control 371.3 Fan Speed Control for Indoor UnitsControl Mode The airflow rate can be automatically controlled depe

Main Functions Si04-30638 Function and Control1.4 Programme Dry FunctionProgramme dry function removes humidity while preventing the room temperature

Si04-306 Main FunctionsFunction and Control 391.5 Automatic OperationAutomatic Cooling / Heating Function (Heat Pump Only)When the AUTO mode is select

Main Functions Si04-30640 Function and Control1.6 Night Set ModeWhen the OFF timer is set, the Night Set circuit automatically activates.The Night Set

Si04-306iv Table of ContentsPart 7 Removal Procedure ... 1351. Indoor Unit...

Si04-306 Main FunctionsFunction and Control 411.7 Intelligent EyeThis is the function that detects existence of humans in the room by a human motion s

Main Functions Si04-30642 Function and ControlSince the set temperature is shifted by 2°C higher for 40 minutes, compressor speed becomes low and can

Si04-306 Main FunctionsFunction and Control 431.8 Home Leave OperationOutline In order to respond to the customer's need for immediate heating an

Main Functions Si04-30644 Function and Control1.9 Inverter Powerful OperationOutline In order to exploit the cooling and heating capacity to full exte

Si04-306 Main FunctionsFunction and Control 451.10 Other Functions1.10.1 Hot Start FunctionHeat Pump OnlyIn order to prevent the cold air blast that n

Function of Main Structural Parts Si04-30646 Function and Control2. Function of Main Structural Parts2.1 Function of Thermistor2.1.1 Heat Pump ModelA

Si04-306 Function of Main Structural PartsFunction and Control 472.1.2 Cooling Only ModelA Outdoor Heat Exchanger Thermistor (DCB)1. The outdoor he

Control Specification Si04-30648 Function and Control3. Control Specification3.1 Mode HierarchyOutline There are two modes; the mode selected in user’

Si04-306 Control SpecificationFunction and Control 493.2 Frequency ControlOutline Frequency will be determined according to the difference between roo

Control Specification Si04-30650 Function and Control3. Determine lower limit frequencySet a maximum value as an lower limit frequency among the freq

Si04-306 Introductionv1. Introduction1.1 Safety CautionsCautions and WarningsBe sure to read the following safety cautions before conducting repair w

Si04-306 Control SpecificationFunction and Control 513.3 Controls at Mode Changing / Start-up3.3.1 Preheating OperationOutline Operate the inverter in

Control Specification Si04-30652 Function and Control3.4 Discharge Pipe Temperature ControlOutline The discharge pipe temperature is used as the compr

Si04-306 Control SpecificationFunction and Control 533.6 Freeze-up Protection ControlOutline During cooling operation, the signals being sent from the

Control Specification Si04-30654 Function and Control3.8 Fan ControlOutline Fan control is carried out according to the following priority.1. Fan ON c

Si04-306 Control SpecificationFunction and Control 553.10 Low Hz High Pressure LimitOutline Heat Pump OnlySet the upper limit of high pressure in a lo

Control Specification Si04-30656 Function and Control3.12 Electronic Expansion Valve Control Outline The following items are included in the electroni

Si04-306 Control SpecificationFunction and Control 573.12.1 Fully Closing with Power ONInitialize the electronic expansion valve when turning on the p

Control Specification Si04-30658 Function and Control3.12.7 Control when frequency is changedWhen the target discharge pipe temperature control is act

Si04-306 Control SpecificationFunction and Control 593.13 Malfunctions3.13.1 Sensor Malfunction DetectionSensor malfunction may occur either in the th

Control Specification Si04-30660 Function and Control3.14 Forced Operation ModeOutline Forced operating mode includes only forced cooling.Detail Force

Introduction Si04-306vi1.1.2 Cautions Regarding Products after RepairCautionDo not repair the electrical components with wet hands.Working on the equi

Si04-306System Configuration 61Part 5Part 5Part 5Part 5System ConfigurationSystem ConfigurationSystem ConfigurationSystem Configuration1. System Confi

System Configuration Si04-30662 System Configuration1. System ConfigurationAfter the installation and test operation of the room air conditioner have

Si04-306 InstructionSystem Configuration 632. InstructionNote: This instruction is appropriate for FTK(X)D 50/60/71 BVM(A) models.2.1 Safety Precautio

Instruction Si04-30664 System Configuration3•Do not stand or sit on the outdoor unit. Do not place any object on the unit to avoid injury, do not remo

Si04-306 InstructionSystem Configuration 652.2 Names of Parts4 Indoor Unit Main unit control panel71411121343129108651615

Instruction Si04-30666 System Configuration5 Outdoor Unit Indoor Unit1.Air filter2. Photocatalytic deodorizing filter orAir purifying filter:•These

Si04-306 InstructionSystem Configuration 676 Remote Controller1. Signal transmitter:•It sends signals to the indoor unit.2. Display:•It displays the c

Instruction Si04-30668 System Configuration2.3 Preparation before Operation7 To set the batteries1. Press with a finger and slide the front cover to

Si04-306 InstructionSystem Configuration 698 To operate the remote controller• To use the remote controller, aim the transmitter at the indoor unit. I

Instruction Si04-30670 System Configuration9 To set the clock1. Press “CLOCK button”.is displayed.blinks.2. Press “TIMER setting button” to set the cl

Si04-306 Introductionvii1.1.3 Inspection after RepairBe sure to use an exclusive power circuit for the equipment, and follow the technical standards r

Si04-306 InstructionSystem Configuration 712.4 AUTO · DRY · COOL · HEAT · FAN Operation10The air conditioner operates with the operation mode of your

Instruction Si04-30672 System Configuration11 To change the air flow rate setting5. Press “FAN setting button”.• Indoor unit quiet operationWhen the a

Si04-306 InstructionSystem Configuration 732.5 Adjusting the Air Flow Direction12You can adjust the air flow direction to increase your comfort. To ad

Instruction Si04-30674 System Configuration13 To 3-D Airflow1. 3. press “SWING button”: the “” “” display will light up and the flaps and louvers will

Si04-306 InstructionSystem Configuration 752.6 POWERFUL Operation14POWERFUL operation quickly maximizes the cooling (heating) effect in any operation

Instruction Si04-30676 System Configuration2.7 OUTDOOR UNIT SILENT Operation15OUTDOOR UNIT SILENT operation lowers the noise level of the outdoor unit

Si04-306 InstructionSystem Configuration 772.8 HOME LEAVE Operation16HOME LEAVE operation is a function which allows you to record your preferred temp

Instruction Si04-30678 System Configuration17 What’s the HOME LEAVE operationIs there a set temperature and air flow rate which is most comfortable, a

Si04-306 InstructionSystem Configuration 792.9 INTELLIGENT EYE Operation18“INTELLIGENT EYE” is the infrared sensor which detects the human movement. T

Instruction Si04-30680 System Configuration19“INTELLIGENT EYE” is useful for Energy SavingNotes on “INTELLIGENT EYE”CAUTION Energy saving operation

Introduction Si04-306viii1.1.4 Using IconsIcons are used to attract the attention of the reader to specific information. The meaning of each icon is d

Si04-306 InstructionSystem Configuration 812.10 TIMER Operation20Timer functions are useful for automatically switching the air conditioner on or off

Instruction Si04-30682 System Configuration21 To use ON TIMER operation• Check that the clock is correct. If not, set the clock to the present time (p

Si04-306 InstructionSystem Configuration 832.11 Care and Cleaning24CAUTION Indoor unit, Outdoor unit and Remote controller1. Wipe them with dry soft

Instruction Si04-30684 System Configuration251. Open the front grille. (page 24)2. Pull out the air filters.•Push a little upwards the tab at the cent

Si04-306 InstructionSystem Configuration 8526Check Before a long idle period1. Operate the “fan only” for several hours on a fine day to dry out the i

Instruction Si04-30686 System Configuration2.12 Troubleshooting27The following cases are not air conditioner troubles but have some reasons. You may j

Si04-306 InstructionSystem Configuration 8728Please check again before calling a repair person.Check again.Case CheckThe air conditioner does not oper

Instruction Si04-30688 System Configuration29WARNING When an abnormality (such as a burning smell) occurs, stop operation and turn the breaker OFF.

Si04-306Service Diagnosis 89Part 6Part 6Part 6Part 6Service DiagnosisService DiagnosisService DiagnosisService Diagnosis1. Caution for Diagnosis...

Caution for Diagnosis Si04-30690 Service Diagnosis1. Caution for DiagnosisThe Operation lamp flashes when any of the following errors is detected.1. W