Daikin J Series Service Manual

SiE18-201J SeriesServiceManual[Applied Models]Super Multi Plus : Cooling Only Super Multi Plus : Heat Pump

SiE18-201 Introduction ix 1.1.3 Inspection after Repair Be sure to use the specified cable to connect between the indoor and outdoor units. Make the

SiE18-201 System controlMain Functions 893.17 Wet Protection Control IOutline When the outside air temperature is low, the lower limit of operating fr

System control SiE18-20190 Main Functions3.18 Electric Parts Cooling and Electric Parts / Fin Temperature ControlOutline This function cools the elect

SiE18-201 System controlMain Functions 913.19 Differential Pressure ControlOutline This function sets an upper limit for the fan rotation speed accord

System control SiE18-20192 Main Functions3.20 Year-Round Cooling-Only FunctionOutline This function turns off the compressor based on the conditions o

SiE18-201 System controlMain Functions 933.21 Nighttime Low Noise ControlPurpose of the FunctionThis function lowers the operating sound when the nois

System control SiE18-20194 Main Functions3.22 PI ControlOutline Based on the ∆D signal, MAXα of the command frequency is monitored every 20 seconds, a

SiE18-201 System controlMain Functions 953.23 Warm-Up FunctionOutline This function operates the inverter in a open-phase mode to warm up the compress

System control SiE18-20196 Main Functions3.24 Compressor Protection ControlPurpose of the FunctionThis function ensures appropriate compressor oil lev

SiE18-201 System controlMain Functions 973.25 Fan ControlPurpose of the FunctionThis function changes the fan rotation speed or stop the fan operation

System control SiE18-20198 Main FunctionsFan control in normal heating modeDue to outside air temperature DOA and output frequency FOUT, conditions 

Introduction SiE18-201 x 1.1.4 Using Icons Icons are used to attract the attention of the reader to specific information. The meaning of each icon is

SiE18-201 System controlMain Functions 993.26 Motorized Valve Control of Outdoor Unit3.26.1 Outline of Motorized Valve ControlOutline The EVL and EVG

System control SiE18-201100 Main Functions3.26.2 Outdoor Unit Motorized Valve Opening RestrictionOutline This function restricts the opening degree of

SiE18-201 System controlMain Functions 1013. EVL (liquid pipe motorized valve) opening restrictionEVL (liquid pipe motorized valve) ELV fully closed

System control SiE18-201102 Main Functions3.26.3 Outdoor Unit Motorized Valve Control in Startup and During the Number of Operating Room Units ChangeO

SiE18-201 System controlMain Functions 103 In case of KBPIW 1.5 ≤ FPIMN / initial frequencyWhen initial frequency is equal or smaller than FPIMN / 1.

System control SiE18-201104 Main Functions3.26.5 Outdoor Units Motorized Valve Control by Target Discharge Pipe TemperatureOutline This function adjus

SiE18-201 System controlMain Functions 1053.27 Cooling Outdoor Unit SC ControlOutline This function controls the subcooling of the outdoor heat exchan

System control SiE18-201106 Main Functions3.28 BP Unit Motorized Valve ControlPurpose of the FunctionThis function provides instructions regarding the

SiE18-201 System controlMain Functions 1073.28.4 Full Closing of Motorized ValvesPurpose of the FunctionThe motorized valves are initialized when the

System control SiE18-201108 Main Functions3.28.6 Control Based on Relative Flow Rate InstructionPurpose of the FunctionThis function operates the moto

SiE18-201 List of Function 1 Part 1List of Function 1. List of Function...

SiE18-201 System controlMain Functions 1093.29 Gas Pipe Isothermal Control in Cooling OperationPurpose of the FunctionThis function ensures appropriat

System control SiE18-201110 Main FunctionsThe motorized valve operating amount is determined based on deviation EGA between each room unit's gas

SiE18-201 System controlMain Functions 1113.30 SH Control in Cooling OperationPurpose of the FunctionThis function ensures appropriate refrigerant dis

System control SiE18-201112 Main FunctionsRegarding target superheated degree SH(Example) The following example is based on room A.When the sum of hea

SiE18-201 System controlMain Functions 1133.31 SC Control in Heating OperationPurpose of the FunctionThis function ensures appropriate refrigerant dis

System control SiE18-201114 Main FunctionsDetails The heat exchanger intermediate temperature and liquid pipe temperature are detected at every sampli

SiE18-201 System controlMain Functions 1153.32 Heat Exchanger Isothermal Control in Heating OperationPurpose of the FunctionThis function ensures appr

System control SiE18-201116 Main Functions3.33 BP Unit Motorized Valve Control in High Discharge Pipe TemperatureWhen the discharge pipe temperature e

SiE18-201 System controlMain Functions 1173.34 Inter-BP Units Heating Heat Exchanger Isothermal ControlPurpose of the FunctionThis function ensures ap

System control SiE18-201118 Main Functions3.35 Inter-BP Units Gas Pipe Isothermal ControlPurpose of the FunctionThis function ensures appropriate refr

List of Function SiE18-201 2 List of Function 1. List of Function 1.1 Function List for Europe R-22  1 : for FLX50/60J  2 – : for FLX50/60J Divi

SiE18-201 System controlMain Functions 1193.36 BP Unit Motorized Valve Control by Target Discharge Pipe TemperaturePurpose of the FunctionThis functio

System control SiE18-201120 Main Functions3.37 4-Way Valve Operation3.37.1 4-Way Valve Operation SecurityPurpose of the FunctionThis function ensures

SiE18-201 System controlMain Functions 1213.38 JIS ModePurpose of the FunctionThis aims to minimize capacity deviations at the time the JIS mode is de

System control SiE18-201122 Main Functions3.39 Pump Down OperationOutline When the Pump-down button is pressed, the following control is provided to c

SiE18-201 System controlMain Functions 1233.40 Protection Control of SkyAir Indoor UnitsSkyAir Indoor Unit Peak-Cut ZoneThe zones for SkyAir indoor un

System control SiE18-201124 Main FunctionsMonitoring Function During SkyAir Indoor Unit Heating Thermostat OFFIn the case of SkyAir indoor units, the

SiE18-201Flow of Refrigerant 125Part 6Flow of Refrigerant1. Flow of Refrigerant...

Flow of Refrigerant SiE18-201126 Flow of Refrigerant1. Flow of Refrigerant1.1 Flow of RefrigerantOperation ModeNo.Operating Status: Fixed opening (st

SiE18-201 Flow of RefrigerantFlow of Refrigerant 1271.2 Standby Operation (Cooling)THERMISTORLIQUID PIPEOUTDOOR UNITMOTORMOTORDC FANDC FANDISTRIBUTOR(

Flow of Refrigerant SiE18-201128 Flow of Refrigerant1.3 Equalizing Control (Cooling)THERMISTORLIQUID PIPEOUTDOOR UNITMOTORMOTORDC FANDC FANDISTRIBUTOR

SiE18-201 List of FunctionList of Function 31.2 Function List for Singapore, Malaysia, IndonesiaDivisionIndoor Unit / Outdoor UnitInverter (with Inver

SiE18-201 Flow of RefrigerantFlow of Refrigerant 1291.4 Oil Return Operation (Cooling)THERMISTORLIQUID PIPEOUTDOOR UNITMOTORMOTORDC FANDC FANDISTRIBUT

Flow of Refrigerant SiE18-201130 Flow of Refrigerant1.5 Low Outside Air Temperature CoolingTHERMISTORLIQUID PIPEOUTDOOR UNITMOTORMOTORDC FANDC FANDIST

SiE18-201 Flow of RefrigerantFlow of Refrigerant 1311.6 All-Room Operation (Cooling)THERMISTORLIQUID PIPEOUTDOOR UNITMOTORMOTORDC FANDC FANDISTRIBUTOR

Flow of Refrigerant SiE18-201132 Flow of Refrigerant1.7 Multi-Room Operation (No Surplus Refrigerant) (Cooling)THERMISTORLIQUID PIPEOUTDOOR UNITMOTORM

SiE18-201 Flow of RefrigerantFlow of Refrigerant 1331.8 Multi-Room Operation (Cooling) (with Surplus Refrigerant)THERMISTORLIQUID PIPEOUTDOOR UNITMOTO

Flow of Refrigerant SiE18-201134 Flow of Refrigerant1.9 1-Room Operation — Indoor Unit with Large Capacity (Cooling)THERMISTORLIQUID PIPEOUTDOOR UNITM

SiE18-201 Flow of RefrigerantFlow of Refrigerant 1351.10 1-Room Operation — Indoor Unit with Small Capacity (2.5 kW) (Cooling)THERMISTORLIQUID PIPEOUT

Flow of Refrigerant SiE18-201136 Flow of Refrigerant1.11 Standby Operation (Heating)THERMISTORLIQUID PIPEOUTDOOR UNITMOTORMOTORDC FANDC FANDISTRIBUTOR

SiE18-201 Flow of RefrigerantFlow of Refrigerant 1371.12 Equalizing Control (Heating)THERMISTORLIQUID PIPEOUTDOOR UNITMOTORMOTORDC FANDC FANDISTRIBUTO

Flow of Refrigerant SiE18-201138 Flow of Refrigerant1.13 Oil Return Operation (Heating)THERMISTORLIQUID PIPEOUTDOOR UNITMOTORMOTORDC FANDC FANDISTRIBU

List of Function SiE18-2014 List of Function1.3 Function List for Australia1  : for FLK, FLX50/60J2– : for FLK, FLX50/60JDivisionIndoor Unit / Outd

SiE18-201 Flow of RefrigerantFlow of Refrigerant 1391.14 Defrost Operation THERMISTORLIQUID PIPEOUTDOOR UNITMOTORMOTORDC FANDC FANDISTRIBUTOR(DEL)PROP

Flow of Refrigerant SiE18-201140 Flow of Refrigerant1.15 All-Room Operation (Heating)THERMISTORLIQUID PIPEOUTDOOR UNITMOTORMOTORDC FANDC FANDISTRIBUTO

SiE18-201 Flow of RefrigerantFlow of Refrigerant 1411.16 Multi-Room Operation (with non-Operating Room Unit) (Heating)THERMISTORLIQUID PIPEOUTDOOR UNI

Flow of Refrigerant SiE18-201142 Flow of Refrigerant1.17 Multi-Room Operation (Heating)THERMISTORLIQUID PIPEOUTDOOR UNITMOTORMOTORDC FANDC FANDISTRIBU

SiE18-201 Flow of RefrigerantFlow of Refrigerant 1431.18 1-Room Operation — Indoor Unit with Large Capacity (Heating)THERMISTORLIQUID PIPEOUTDOOR UNIT

Flow of Refrigerant SiE18-201144 Flow of Refrigerant1.19 1-Room Operation — Indoor Unit with Small Capacity (2.5 kW) (Heating)THERMISTORLIQUID PIPEOUT

SiE18-201Operations 145Part 7Operations1. Remote Controller...1461.1 Wirel

Remote Controller SiE18-201146 Operations1. Remote Controller1.1 Wireless Remote Controller1.1.1 FTX25 / 35JCONAMPMAMPMTEMPON/OFFMODE -SLEEPSENSORO

SiE18-201 Remote ControllerOperations 1471.1.2 FVX25 / 35KZOpen the cover.It displays the current settings.(In this illustration, eachsection is shown

Remote Controller SiE18-201148 Operations1.1.3 FTXD25 / 35KZOpen the cover.It displays the current settings.(In this illustration, eachsection is show

SiE18-201 List of FunctionList of Function 51.4 Function List for Europe R-407C1  : for FLX50/60J2– : for FLX50/60JDivisionIndoor Unit / Outdoor Un

SiE18-201 Remote ControllerOperations 1491.1.4 FTXD50 / 60 / 71JOpen the cover.It displays the current settings.(In this illustration, eachsection is

Remote Controller SiE18-201150 Operations1.1.5 FLX50 / 60JOpenthecover.CONAMPMAMPMPOWERFULMODEONCANCELOFFTEMPHOMELEAVESILENTFANSWINGTEMPON/OFFTransmit

SiE18-201 Remote ControllerOperations 1511.1.6 CDX25 / 35 / 50 / 60J∗ARC423A13, ARC423A14 for CDK25 / 35 / 50 / 60HAVEC, CDX25 / 35 / 50 / 60HAVECCAMP

Remote Controller SiE18-201152 Operations1.1.7 CDX25 / 35 / 50 / 60HACAMPMAMPMTEMPON/OFFMODEONOFFTIMERFA NCANCELPOWERFULLTransmitterIt sends signals t

SiE18-201 Remote ControllerOperations 1531.1.8 FLX25 / 35H∗ARC423A9, ARC423A10 for FLK25 / 35 / 50 / 60HVEC, FLX25 / 35 / 50 / 60HVECCONAMPMAMPMTEMPON

Remote Controller SiE18-201154 Operations1.1.9 FHYC35 / 45 / 60 / 71B7V1 (Optional Accessory)BRC7C513WC

SiE18-201 Remote ControllerOperations 155DISPLAY "▲" (SIGNALTRANSMISSION)DISPLAY " " (SET TEMPERA-TURE)DISPL

Remote Controller SiE18-201156 Operations1.2 Wired Remote Controller1.2.1 FHYC35 / 45 / 60 / 71B (Optional Accessory)BRC1C517REMOTE CONTROLLERNote For

SiE18-201Operating Test 157Part 8Operating Test1. Operating Test ...1

Operating Test SiE18-201158 Operating Test1. Operating Test1.1 Operating Test1OPERATING TEST*Check the connection status.Be sure to carry out initial

List of Function SiE18-2016 List of Function

SiE18-201 Operating TestOperating Test 159*ex.) : Connect indoor units (2 rooms) to BP1.Connect indoor units (3 rooms) to BP2.Connect indoor units (2

Operating Test SiE18-201160 Operating Test1. Record the installation location of each BP unit in the centralized name plate attached to the front pane

SiE18-201 Operating TestOperating Test 1611.2 Test Operation SwitchTEST OPERATION SWITCH [SW7]Press the FORCED OPERATION SWITCH [SW7]Aftrer sellecting

Operating Test SiE18-201162 Operating Test1.3 Pump Down Operation Switch1. Close the liquid side stop valve of outdoor unit.2. Pump down3. Close the g

SiE18-201 Operating TestOperating Test 1631.4 Record of the Installation PositionBe sure to enter the system unit installation position.1 SYSTEM LAYOU

Method of Field Set SiE18-201164 Operating Test2. Method of Field Set2.1 Field SettingWired Remote ControllerNotes: (Field setting must be made from t

SiE18-201 Method of Field SetOperating Test 165Wireless Remote ControllerNote: If optional accessories are mounted on the indoor unit, the indoor unit

Method of Field Set SiE18-201166 Operating Test2.1.2 Local Setting Mode No.Example To set the filter sign time to “filter contamination - heavy” for a

SiE18-201 Method of Field SetOperating Test 1673. When installing Sky Air simultaneous operation multi-unit, set to either “twin” or “triple.” Only wh

Method of Field Set SiE18-201168 Operating TestWireless Setting (Address and MAIN/SUB Setting)ExplanationIf several wireless remote controller units a

SiE18-201Specifications 7Part 2Specifications1. Specifications...

SiE18-201 Method of Field SetOperating Test 169Setting the Address of Wireless Remote Controller (It is Factory Set to “1”) <Setting from the remot

Method of Field Set SiE18-201170 Operating TestAfter Setting Stick the Unit No. label at decoration panel air discharge outlet as well as on the back

SiE18-201 Method of Field SetOperating Test 171Fan Speed Changeover when Thermostat is OFFBy setting to “Set Fan Speed,” you can switch the fan speed

Method of Field Set SiE18-201172 Operating Test2.2 Interface Adaptor for Room Airconditioner <KRP928A1S>Safety Precautions 3. Compatible Models4

SiE18-201 Method of Field SetOperating Test 173Note: Setting of Centralized Controller<DCS301B61, DCS302B61, KRC72>Please refer to Operating Ins

Method of Field Set SiE18-201174 Operating Test2.3 Precautions: For RMK140J / RMX140J Outdoor Unit UsersApplicable model seriesOutside air temperature

SiE18-201Service Diagnosis 175Part 9Service Diagnosis1. Troubleshooting - Split Type Indoor Unit...1761.1 Tr

Troubleshooting - Split Type Indoor Unit SiE18-201176 Service Diagnosis1. Troubleshooting - Split Type Indoor Unit1.1 Troubleshooting with the Operati

SiE18-201 Troubleshooting - Split Type Indoor UnitService Diagnosis 177Troubleshooting with the LED IndicationThere are green and red LEDs on the PCB.

Troubleshooting - Split Type Indoor Unit SiE18-201178 Service Diagnosis1.2 Service Check Function1.2.1 ARC423 Series (FTX25/35J Series)In the ARC423A

Specifications SiE18-2018 Specifications1. Specifications1.1 Outdoor Units1.1.1 Cooling OnlyNotes:1. ★ Refer to Engineering Data Book.2. The data are

SiE18-201 Troubleshooting - Split Type Indoor UnitService Diagnosis 1791.3 Code Indication on the Remote Controller1.3.1 Error Codes and Description o

Troubleshooting - Split Type Indoor Unit SiE18-201180 Service Diagnosis1.4 Troubleshooting1.4.1 Indoor UnitsFTX25/35 J Series - : Not used for troubl

SiE18-201 Troubleshooting - Split Type Indoor UnitService Diagnosis 1811.5 Troubleshooting Detail1.5.1 Faulty PCBRemote Controller DisplayA1Indoor Uni

Troubleshooting - Split Type Indoor Unit SiE18-201182 Service Diagnosis1.5.2 Operation Halt Due to the Freeze Protection FunctionRemote Controller Dis

SiE18-201 Troubleshooting - Split Type Indoor UnitService Diagnosis 183TroubleshootingCheck No.8Refer to P.254NONONOCheck No. 8Indoor unit heat exchan

Troubleshooting - Split Type Indoor Unit SiE18-201184 Service Diagnosis1.5.3 Operation Halt Due to Fan Motor (AC Motor) or Related AbnormalityRemote C

SiE18-201 Troubleshooting - Split Type Indoor UnitService Diagnosis 1851.5.4 Operation Halt Due to Detection of Thermistor or Related AbnormalityRemot

Troubleshooting - Split Type Indoor Unit SiE18-201186 Service Diagnosis1.5.5 Faulty Indoor Unit PCBRemote Controller Display∗Indoor Unit LED DisplayA

SiE18-201 Troubleshooting - Split Type Indoor UnitService Diagnosis 1871.5.6 Faulty Indoor Unit PCBRemote Controller Display∗Indoor Unit LED DisplayA

Troubleshooting - Split Type Indoor Unit SiE18-201188 Service Diagnosis1.5.7 Faulty Power Supply or Indoor Unit PCB (For FTK(X)25/35J)Remote Controlle

SiE18-201 Table of Contents i Super Multi PlusJ Series Heat PumpIndoor Unit FTX25JAV1NB FTXD50JV1B CDX25HAV1NB FLX25HV1NB FHYB35FK7V1FTX35JAV1NB FTX

SiE18-201 SpecificationsSpecifications 9Notes:1. ★ Refer to Engineering Data Book.2. The data are based on the conditions shown in the table below.60H

SiE18-201 Troubleshooting - Split Type Indoor UnitService Diagnosis 1891.5.8 Faulty Power Supply or Indoor Unit PCB (For FTK(X)50/60H, CDK(X)25~60H)Re

Troubleshooting - Split Type Indoor Unit SiE18-201190 Service DiagnosisTroubleshootingCheck the varistor of the indoor unit PCB.Check the supply volta

SiE18-201 Troubleshooting - Split Type Indoor UnitService Diagnosis 191TroubleshootingCheck No.16Refer to P.258Check the voltage of the transformer&ap

Troubleshooting - Split Type Indoor Unit SiE18-201192 Service Diagnosis1.5.9 Signal Transmission Error (Between Indoor and Outdoor Units)Remote Contro

SiE18-201 Troubleshooting - Split Type Indoor UnitService Diagnosis 1931.5.10 Signal Transmission Error (Between Indoor Unit and Remote Controller)Rem

Troubleshooting - Split Type Indoor Unit SiE18-201194 Service DiagnosisTroubleshootingCheck the indoor unit's LED A.Check the outdoor unit's

SiE18-201 Troubleshooting - SkyAir Indoor UnitService Diagnosis 1952. Troubleshooting - SkyAir Indoor Unit2.1 The INSPECTION/TEST ButtonExplanation By

Troubleshooting - SkyAir Indoor Unit SiE18-201196 Service Diagnosis2.2 Self-Diagnosis by Wired Remote ControllerExplanation If operation stops due to

SiE18-201 Troubleshooting - SkyAir Indoor UnitService Diagnosis 1972.3 Fault Diagnosis by Wireless Remote ControllerIf equipment stops due to a malfun

Troubleshooting - SkyAir Indoor Unit SiE18-201198 Service DiagnosisNormal status1 Press INSPECTION/TEST button.If no button is pressedfor 1 minute, e

Specifications SiE18-20110 SpecificationsNotes:1. ★ Refer to Engineering Data Book.2. The data are based on the conditions shows in the table below.50

SiE18-201 Troubleshooting - SkyAir Indoor UnitService Diagnosis 1992.4 Troubleshooting by LED on the Indoor Unit’sForeword Troubleshooting can be carr

Troubleshooting - SkyAir Indoor Unit SiE18-201200 Service Diagnosis2.5 Troubleshooting by Remote Controller Display / LED Display2.5.1 Explanation for

SiE18-201 Troubleshooting - SkyAir Indoor UnitService Diagnosis 2012.6 Troubleshooting Detail2.6.1 Failure of Indoor Unit PC BoardRemote Controller Di

Troubleshooting - SkyAir Indoor Unit SiE18-201202 Service Diagnosis2.6.2 Malfunction of Drain Water Level System (Float Type) Remote Controller Displa

SiE18-201 Troubleshooting - SkyAir Indoor UnitService Diagnosis 203TroubleshootingCautionBe sure to turn off power switch before connect or disconnect

Troubleshooting - SkyAir Indoor Unit SiE18-201204 Service Diagnosis2.6.3 Indoor Unit Fan Motor LockRemote Controller DisplayA6Applicable ModelsFHYCMet

SiE18-201 Troubleshooting - SkyAir Indoor UnitService Diagnosis 2052.6.4 Swing Flap Motor Malfunction / LockRemote Controller DisplayA7Applicable Mode

Troubleshooting - SkyAir Indoor Unit SiE18-201206 Service Diagnosis2.6.5 Failure of Capacity SettingRemote Controller DisplayAJApplicable ModelsFHYCMe

SiE18-201 Troubleshooting - SkyAir Indoor UnitService Diagnosis 2072.6.6 Malfunction of Heat Exchange Temperature Sensor System Remote Controller Disp

Troubleshooting - SkyAir Indoor Unit SiE18-201208 Service Diagnosis2.6.7 Malfunction of Suction Air Temperature Sensor System Remote Controller Displa

SiE18-201 SpecificationsSpecifications 11Notes:1. ★ Refer to Engineering Data Book.2. The data are based on the conditions shows in the table below.50

SiE18-201 Troubleshooting - Outdoor Unit RelatedService Diagnosis 2093. Troubleshooting - Outdoor Unit Related3.1 The Unit Runs but Doesn’t Cool (Heat

Troubleshooting - Outdoor Unit Related SiE18-201210 Service DiagnosisTroubleshootingHeatingOpen the stop valve.There is possibility of EVn malfunction

SiE18-201 Troubleshooting - Outdoor Unit RelatedService Diagnosis 2113.2 7 Seg. Display on the Outdoor P.C. BoardTROUBLE DAIGNOSIS <LED ON OUTDOOR

Troubleshooting - Outdoor Unit Related SiE18-201212 Service Diagnosis3.3 Troubleshooting Detail3.3.1 High Pressure MalfunctionOutdoor Unit IndicationE

SiE18-201 Troubleshooting - Outdoor Unit RelatedService Diagnosis 2133.3.2 Compressor LockOutdoor Unit IndicationE6Method of Malfunction DetectionDete

Troubleshooting - Outdoor Unit Related SiE18-201214 Service Diagnosis3.3.3 Fan Lock / OvercurrentOutdoor Unit IndicationE7Method of Malfunction Detect

SiE18-201 Troubleshooting - Outdoor Unit RelatedService Diagnosis 2153.3.4 Operation Halt Due to Detection of INV Input Current ErrorOutdoor Unit Indi

Troubleshooting - Outdoor Unit Related SiE18-201216 Service Diagnosis3.3.5 Malfunction of Electronic Expansion ValveOutdoor Unit IndicationE9Method of

SiE18-201 Troubleshooting - Outdoor Unit RelatedService Diagnosis 2173.3.6 Operation Halt Due to Discharge Pipe Temperature ControlOutdoor Unit Indica

Troubleshooting - Outdoor Unit Related SiE18-201218 Service Diagnosis3.3.7 LP Drop ErrorOutdoor Unit IndicationFCMethod of Malfunction DetectionWhen t

Specifications SiE18-20112 Specifications1.1.2 Heat PumpNotes:1. ★ Refer to Engineering Data Book.2. The data are based on the conditions shown in the

SiE18-201 Troubleshooting - Outdoor Unit RelatedService Diagnosis 2193.3.8 Malfunction of High Pressure Switch SystemOutdoor Unit IndicationH3Method o

Troubleshooting - Outdoor Unit Related SiE18-201220 Service Diagnosis3.3.9 Operation Halt Due to Faulty Position Detection SensorOutdoor Unit Indicati

SiE18-201 Troubleshooting - Outdoor Unit RelatedService Diagnosis 2213.3.10 Fan Position Detection ErrorOutdoor Unit IndicationH7Method of Malfunction

Troubleshooting - Outdoor Unit Related SiE18-201222 Service Diagnosis3.3.11 Operation Halt Due to Detection of CT ErrorOutdoor Unit IndicationH8Method

SiE18-201 Troubleshooting - Outdoor Unit RelatedService Diagnosis 2233.3.12 Faulty Outside Air ThermistorOutdoor Unit IndicationH9Method of Malfunctio

Troubleshooting - Outdoor Unit Related SiE18-201224 Service Diagnosis3.3.13 Faulty Discharge ThermistorOutdoor Unit IndicationJ3Method of Malfunction

SiE18-201 Troubleshooting - Outdoor Unit RelatedService Diagnosis 2253.3.14 Faulty of Suction ThermistorOutdoor Unit IndicationJ5Method of Malfunction

Troubleshooting - Outdoor Unit Related SiE18-201226 Service Diagnosis3.3.15 Faulty heat exchanger thermistorOutdoor Unit IndicationJ6Method of Malfunc

SiE18-201 Troubleshooting - Outdoor Unit RelatedService Diagnosis 2273.3.16 Faulty of Liquid Pipe ThermistorOutdoor Unit IndicationJ7Method of Malfunc

Troubleshooting - Outdoor Unit Related SiE18-201228 Service Diagnosis3.3.17 Faulty BP Liquid Pipe ThermistorOutdoor Unit IndicationJ8Method of Malfunc

SiE18-201 SpecificationsSpecifications 13Notes:1. ★ Refer to Engineering Data Book.2. The data are based on the conditions shown in the table below.60

SiE18-201 Troubleshooting - Outdoor Unit RelatedService Diagnosis 2293.3.18 Faulty BP Gas Pipe ThermistorOutdoor Unit IndicationJ9Method of Malfunctio

Troubleshooting - Outdoor Unit Related SiE18-201230 Service Diagnosis3.3.19 Abnormal LP ErrorOutdoor Unit IndicationJCMethod of Malfunction Detection1

SiE18-201 Troubleshooting - Outdoor Unit RelatedService Diagnosis 2313.3.20 Rise in BOX TemperatureOutdoor Unit IndicationL3Method of Malfunction Dete

Troubleshooting - Outdoor Unit Related SiE18-201232 Service Diagnosis3.3.21 Abnormal Rise in Fin TemperatureOutdoor Unit IndicationL4Method of Malfunc

SiE18-201 Troubleshooting - Outdoor Unit RelatedService Diagnosis 2333.3.22 Operation Halt Due to Detection of Output OvercurrentOutdoor Unit Indicati

Troubleshooting - Outdoor Unit Related SiE18-201234 Service DiagnosisTroubleshootingCheck No.1Refer to P.249Check No.2Refer to P.249Check No.6Refer to

SiE18-201 Troubleshooting - Outdoor Unit RelatedService Diagnosis 2353.3.23 Integrated Input Current StopOutdoor Unit IndicationL7Method of Malfunctio

Troubleshooting - Outdoor Unit Related SiE18-201236 Service Diagnosis3.3.24 Electronic ThermalOutdoor Unit IndicationL8Method of Malfunction Detection

SiE18-201 Troubleshooting - Outdoor Unit RelatedService Diagnosis 2373.3.25 Stall PreventionOutdoor Unit IndicationL9Method of Malfunction DetectionSt

Troubleshooting - Outdoor Unit Related SiE18-201238 Service Diagnosis3.3.26 Transmission Error between MicrocomputersOutdoor Unit IndicationLCMethod o

Specifications SiE18-20114 SpecificationsNotes:1. ★ Refer to Engineering Data Book.2. The data are based on the conditions shown in the table below.50

SiE18-201 Troubleshooting - Outdoor Unit RelatedService Diagnosis 2393.3.27 Overvoltage, Low VoltageOutdoor Unit IndicationU2Method of Malfunction Det

Troubleshooting - Outdoor Unit Related SiE18-201240 Service Diagnosis3.3.28 Transmission Error between Outdoor Unit and BP UnitOutdoor Unit Indication

SiE18-201 Troubleshooting - Outdoor Unit RelatedService Diagnosis 241TroubleshootingCheck No.14Refer to P.257NOCould be outside causes other than erro

Troubleshooting - Outdoor Unit Related SiE18-201242 Service Diagnosis3.3.29 Transmission Error between Indoor Unit and BP UnitOutdoor Unit IndicationU

SiE18-201 Troubleshooting - Outdoor Unit RelatedService Diagnosis 2433.3.30 Transmission Error of DC FanOutdoor Unit IndicationU7Method of Malfunction

Troubleshooting - Outdoor Unit Related SiE18-201244 Service Diagnosis3.3.31 Operation Halt Due to Detection of Gas ShortageOutdoor Unit IndicationU0Me

SiE18-201 Troubleshooting - Outdoor Unit RelatedService Diagnosis 245TroubleshootingCheck No.3Refer to P.250CT CheckRefer to P.222NOCorrect connection

Troubleshooting - Outdoor Unit Related SiE18-201246 Service Diagnosis3.3.32 System MalfunctionOutdoor Unit IndicationUHMethod of Malfunction Detection

SiE18-201 Troubleshooting - Outdoor Unit RelatedService Diagnosis 2473.3.33 Faulty BOX Thermistor MalfunctionOutdoor Unit IndicationP3Method of Malfun

Troubleshooting - Outdoor Unit Related SiE18-201248 Service Diagnosis3.3.34 Faulty Fin ThermistorOutdoor Unit IndicationP4Method of Malfunction Detect

SiE18-201 SpecificationsSpecifications 15Notes:1. ★ Refer to Engineering Data Book.2. The data are based on the conditions shows in the table below.50

SiE18-201 Troubleshooting - Outdoor Unit RelatedService Diagnosis 2493.4 How to Check3.4.1 Installation Condition CheckCheck No.13.4.2 Discharge Press

Troubleshooting - Outdoor Unit Related SiE18-201250 Service Diagnosis3.4.3 Electronic Expansion Valve CheckCheck No.3 Conduct the followings to check

SiE18-201 Troubleshooting - Outdoor Unit RelatedService Diagnosis 2513.4.5 Internal Wiring Check (1)Check No.5 Check the wiring at the sections marked

Troubleshooting - Outdoor Unit Related SiE18-201252 Service Diagnosis3.4.6 Power Transistor Check (Capacitor Voltage Check)Check No.6 Power Transistor

SiE18-201 Troubleshooting - Outdoor Unit RelatedService Diagnosis 2533.4.7 Power Transistor Output CheckCheck No.7 Measure the output current and volt

Troubleshooting - Outdoor Unit Related SiE18-201254 Service Diagnosis3.4.8 Thermistor Resistance CheckCheck No.8 Remove the connectors of the thermist

SiE18-201 Troubleshooting - Outdoor Unit RelatedService Diagnosis 2553.4.9 Inverter Units Refrigerant System CheckCheck No.93.4.10 Inverter Units Inpu

Troubleshooting - Outdoor Unit Related SiE18-201256 Service Diagnosis3.4.11 Electrolytic Capacitor Capacity CheckCheck No.113.4.12 Voltage Check when

SiE18-201 Troubleshooting - Outdoor Unit RelatedService Diagnosis 2573.4.13 Power Supply Waveforms CheckCheck No.13 Measure the power supply waveform

Troubleshooting - Outdoor Unit Related SiE18-201258 Service Diagnosis3.4.15 Inverter Units Hall IC CheckCheck No.15 1. Check the connector connection.

Specifications SiE18-20116 Specifications1.2 BP UnitsNote:1. BP or Indoor Unit Max. Height - BP or Indoor Unit Min. Height → Max. 15m.Set up BP and IU

SiE18-201 BP Unit Trouble DiagnosisService Diagnosis 2594. BP Unit Trouble Diagnosis4.1 PCB Parts Layout4.2 LED On Branch Provider Unit (Diagnosis LED

BP Unit Trouble Diagnosis SiE18-201260 Service Diagnosis

SiE18-201Removal Procedure 261Part 10Removal Procedure1. For BPMK928B42 · 43 ...2

For BPMK928B42 · 43 SiE18-201262 Removal Procedure1. For BPMK928B42 · 431.1 Installation of Indoor UnitProcedure Warning Be sure to turn off all

SiE18-201 For BPMK928B42 · 43Removal Procedure 2631.2 Opening of Electrical Box Cover and Removal of PCB MountProcedure Warning Be sure to turn o

For BPMK928B42 · 43 SiE18-201264 Removal Procedure2. Removing the PCB  The PCB is treated for moisture resistance. Replace the PCB and its mount toge

SiE18-201 For BPMK928B42 · 43Removal Procedure 2651.3 Removal of Motorized ValveProcedure Warning Be sure to turn off all power supplies before d

For BPMK928B42 · 43 SiE18-201266 Removal Procedure4. Dismounting the motorized valve Before taking this procedure, make sure there is no refrigerant

SiE18-201 For BPMK928B42 · 43Removal Procedure 2674Heat up the brazed sections of the motorized valve. Using pliers or the like, disconnect the valve.

For BPMK928B42 · 43 SiE18-201268 Removal Procedure1.4 Removal of ThermistorProcedure Warning Be sure to turn off all power supplies before disass

SiE18-201 SpecificationsSpecifications 171.3 Indoor Units (for Europe)1.3.1 Heat Pump Wall Mounted Type★ Refer to Engineering Data Book. 2.5kW Class

SiE18-201 For BPMK928B42 · 43Removal Procedure 2693Insert the new thermistor terminal to the thermistor connector. Align the thermistor terminal with

Outdoor Unit SiE18-201270 Removal Procedure2. Outdoor Unit2.1 Removal of Outer PanelsProcedure Warning Be sure to wait 10 minutes or more after t

SiE18-201 Outdoor UnitRemoval Procedure 2712.2 Removal of PCB and Electrical BoxProcedure Warning Be sure to wait 10 minutes or more after turnin

Outdoor Unit SiE18-201272 Removal Procedure4. Disconnecting the compressor leads Handle the sound insulation with enough care. It may damage the pipe

SiE18-201 Outdoor UnitRemoval Procedure 2735. Detaching the electrical box1Remove the screws from the electrical box.2Lift the electrical box off the

Outdoor Unit SiE18-201274 Removal Procedure3Disconnect the two relay connectors on the side.4Remove the two lock screws from the front section.5Slide

SiE18-201 Outdoor UnitRemoval Procedure 2757. Detaching the filter PCB1The filter PCB is located as shown at right.2Disconnect all the connectors and

Outdoor Unit SiE18-201276 Removal Procedure8. Detaching the control PCB1The control PCB is located as shown at right.2The setting and self-diagnostic

SiE18-201 Outdoor UnitRemoval Procedure 2775Remove the five locking card spacers and detach the control PCB. The back of the PCB has silicone compoun

Outdoor Unit SiE18-201278 Removal Procedure11.Detaching the fan control PCB1The fan control PCB is located as shown at right.Remove the four locking c

Specifications SiE18-20118 Specifications★ Refer to Engineering Data Book. 5.0kW Class · 6.0kW Class50Hz 230VModelFTXD50JV1B FTXD60JV1BCooling Heatin

SiE18-201 Outdoor UnitRemoval Procedure 2792.3 Removal of Propeller Fans and Fan MotorsProcedure Warning Be sure to wait 10 minutes or more after

Outdoor Unit SiE18-201280 Removal Procedure2. Dismounting the fan motors In disconnecting the connectors, do not pull the leads, but hold the connect

SiE18-201 Outdoor UnitRemoval Procedure 2812.4 Removal of ThermistorProcedure Warning Be sure to wait 10 minutes or more after turning off all po

Outdoor Unit SiE18-201282 Removal Procedure2.5 Removal of Motorized ValveProcedure Warning Be sure to wait 10 minutes or more after turning off a

SiE18-201 Outdoor UnitRemoval Procedure 2834Disconnect the earth wire.WarningIf refrigerant gas leaks during the job, ventilate the room. (Bear in min

Outdoor Unit SiE18-201284 Removal Procedure2.6 Removal of Sound InsulationProcedure Warning Be sure to wait 10 minutes or more after turning off

SiE18-201 Outdoor UnitRemoval Procedure 2853Draw out the sound insulation cover from the bottom of the compressor.4Undo the two points of the sound in

Outdoor Unit SiE18-201286 Removal Procedure2.7 Removal of CompressorProcedure Warning Be sure to wait 10 minutes or more after turning off all po

SiE18-201 Outdoor UnitRemoval Procedure 2873Remove the three lock nuts from the compressor.4Remove the three lock bolts from the compressor. This is

Outdoor Unit SiE18-201288 Removal Procedure2.8 Removal of 4-way ValveProcedure Warning Be sure to wait 10 minutes or more after turning off all p

SiE18-201 ii Table of Contents 1. Introduction ... vii 1.1 Sa

SiE18-201 SpecificationsSpecifications 19 Duct Connected Type★ Refer to Engineering Data Book. 2.5kW Class · 3.5kW Class50Hz 230VModelCDX25HAV1NB CD

SiE18-201 Outdoor UnitRemoval Procedure 2893Remove the lock screw from the piping assembly.4Disconnect the pipes form the accumulator (at points A and

Outdoor Unit SiE18-201290 Removal Procedure7Cut off the compressor's discharge pipe (at point L) with the pipe cutter.8Disconnect the 4-way valve

SiE18-201 Outdoor UnitRemoval Procedure 2912. Disconnecting the 4-way valve1Remove the screw.2Get rid of the brazing at points A, B, C and D. Disconne

Indoor Unit SiE18-201292 Removal Procedure3. Indoor Unit3.1 Refer following table for indoor unit removal procedureModel Number Service Manual PageFTX

SiE18-201Caution Before Operation 293Part 11Cautions before Operation1. Installation...

Installation SiE18-201294 Caution Before Operation1. Installation1.1 Outdoor Unit1 INSTALLATION PROCEDURE1. Carrying-in• Ta ke care not to let your ha

SiE18-201 InstallationCaution Before Operation 295(C) Where there are obstacles on both suction and discharge sides: Pattern 1 Where the obstacles

Installation SiE18-201296 Caution Before Operation1.2 BP UnitINSTALLATIONThree-sided view (product dimensions and attachment bolt pitch)• This unit ma

SiE18-201 InstallationCaution Before Operation 297Hanging bolt (M10 or M8)Six-sided nut (M10 or M8)Hanger metal 7Hanger metal 7Screws 8Screws

Wiring SiE18-201298 Caution Before Operation2. Wiring2.1 Outdoor UnitELECTRIC WIRING CONNECTION1. Connection electric wire treatment ( CAUTION)Followi

Specifications SiE18-20120 Specifications★ Refer to Engineering Data Book. 2.5kW Class · 3.5kW Class50Hz 230VModelCDX25JV1NB CDX35JV1NBCooling Heatin

SiE18-201 WiringCaution Before Operation 2992. BP unit connection priorityWhen connecting to the BP unit, always start the connection with BP1 of the

Wiring SiE18-201300 Caution Before Operation2.2 BP Unit• Connect refrigerant pipes and connection wires to the appropriate ports marked with matching

SiE18-201 WiringCaution Before Operation 301(5) Follow the instruction on the wiring nameplate to connect the connection wires for indoor/outdoor unit

Wiring SiE18-201302 Caution Before Operation2.3 Outdoor Unit Rotary Switch Setting* RAM View MonitorRSW1 RSW2 Remarks Unit00Latest (status) error code

SiE18-201 WiringCaution Before Operation 303RSW1 RSW2 Remarks Unit41Current BP 1 Room-A gas pipe temperature Temp. offset 40h42Current BP 1 Room-B gas

Others SiE18-201304 Caution Before Operation3. Others3.1 Explanation for FTX25/35J Series3.1.1 Test Run from the Remote Controller (For Heat Pump Mode

SiE18-201 OthersCaution Before Operation 3053.1.2 Method of Operating Air Conditioners Individually (When Two Units are Installed in One Room) For Coo

Others SiE18-201306 Caution Before Operation3.1.5 Adjusting the Angle of the Intelligent-eye Sensor Once installation of the indoor unit is complete,

SiE18-201 OthersCaution Before Operation 3073.2 Explanation for CDK(X)25~60H Series3.2.1 Test Run from the Remote Controller (For Heat Pump Model Only

Others SiE18-201308 Caution Before Operation3.2.3 Centralized Control (For KRC72, KRP411A1S and KRP410A11S)For an explanation on usage, see the option

SiE18-201 SpecificationsSpecifications 21 Floor / Ceiling Suspended Dual Type★ Refer to Engineering Data Book. 2.5kW Class · 3.5kW Class50Hz 230VMod

SiE18-201Appendix 309Part 12Appendix1. Piping Diagrams...3101.1 Outdoor

Piping Diagrams SiE18-201310 Appendix1. Piping Diagrams1.1 Outdoor UnitsRMX140JVMB / RMX140JZVMBTHERMISTORLIQUID PIPEOUTDOOR UNITMOTORMOTORDC FANDC FA

SiE18-201 Piping DiagramsAppendix 3111.2 BP UnitsBPMK928B42BPMK928B43REFRIGERANT FLOWOUTDOOR UNITOUTDOOR UNIT(19.1CuT)(9.5CuT)COOLINGHEATINGEXPANSION

Piping Diagrams SiE18-201312 Appendix1.3 Indoor UnitsFTX25 / 35JAV1NBFTXD50 / 60 / 71JV1BFIELD PIPINGFIELD PIPINGCROSS FLOW FANFAN MOTORON HEAT EXCH.H

SiE18-201 Piping DiagramsAppendix 313CDX25 / 35 / 50 / 60HAV1NB, CDX25 / 35 / 50 / 60JV1NBFLX25 / 35HV1NBFIELD PIPINGFIELD PIPING( CuT)(6.4CuT) IN

Piping Diagrams SiE18-201314 AppendixFLX50 / 60JV1B FHYB35 / 45 / 60 / 71FK7V1, FHYC35 / 45 / 60 / 71B7V1 ON INLET PIPEON HEAT EXCH.HEAT EXCHANGERSIRO

SiE18-201 Piping DiagramsAppendix 315FTK50 / 60HVEC, FTX50 / 60HVECFTXD25 / 35KZV1BHEAT EXCHANGERCROSS FLOW FANFAN MOTORFIELD PIPINGFIELD PIPING( A CU

Piping Diagrams SiE18-201316 AppendixFVX25 / 35KZV1BFVX(K)35 12.7CuTFVX(K)25 9.5CuTFIELD PIPINGFIELD PIPING(6.4CuT)REFRIGERANT FLOWINDOOR UNIT7.9CuTCR

SiE18-201 Wiring DiagramsAppendix 3172. Wiring Diagrams2.1 Outdoor UnitsRMX140JVMB, RMX140JZVMBNACPHPSPMLED2~PCB1~ACNM1CC900~C1RLH1P~L900~CT900~FG1~F1

Wiring Diagrams SiE18-201318 Appendix2.2 BP UnitsBPMK928B42BPMK928B4312TO INDOOR UNITSPCB :PRINTED CIRCUIT BOARDFU1~3 :FUSEH1P~H6P:PILOT LAMPR1T~R4T :

Specifications SiE18-20122 Specifications Floor Standing Type★ Refer to Engineering Data Book. 2.5kW Class · 3.5kW Class50Hz 230VModelFVX25KZV1B FVX

SiE18-201 Wiring DiagramsAppendix 3192.3 Indoor Units2.3.1 Cooling OnlyFHYC35 / 45 / 60 / 71B7V1

Wiring Diagrams SiE18-201320 AppendixFHYB35 / 45 / 60 / 71FK7V1

SiE18-201 Wiring DiagramsAppendix 3212.3.2 Heat PumpFTX25 / 35JAV1NB, FTXD25 / 35KZV1BFTXD50 / 60 / 71JV1BNOTEADDRESS JUMPER IS MARKED "JA"O

Wiring Diagrams SiE18-201322 AppendixCDX25 / 35 / 50 / 60HAV1NB, CDX25 / 35 / 50 / 60JV1NBFLX25 / 35HV1NBRECEIVERSIGNALLEDPCB2H1PCONTROLLERLEDS1WH2PWI

SiE18-201 Wiring DiagramsAppendix 323FLX50 / 60JV1BFVX25 / 35KZV1BSIGNALRECEIVERLEDH1PPCB4PCB3CONTROLLERLEDH2PS1WWIRELESSREMOTELEDH3PR1TS31t˚S25S27S24

Wiring Diagrams SiE18-201324 Appendix

SiE18-201Index iIndexSymbols* ...186, 187, 188, 189Numerics3-Minutes Standby Function ...

SiE18-201ii IndexFC ...218Field SettingWired Remote Controller ...

SiE18-201Index iiiOutline of System Control ...63Overvoltage, Low Voltage ...239P

SiE18-201iv Index

SiE18-201Printed Circuit Board Connector Wiring Diagram and Name 23Part 3Printed Circuit BoardConnector Wiring DiagramandName1. Printed Circuit Board

SiE18-201Drawings & Flow Charts vDrawings & Flow ChartsNumerics1-Room Operation — Indoor Unit Large Capacity (Cooling) ...

SiE18-201vi Drawings & Flow ChartsPrinted Circuit Board (4) (Signal Receiver PCB) ...36Freeze Prevention Control ...

SiE18-201Drawings & Flow Charts viiPiping DiagramsBPMK928B42 ...311BPMK928B43 ...

SiE18-201viii Drawings & Flow Charts

Daikin Europe N.V. is participating in the EUROVENT Certification Programme. Products are as listed in the EUROVENT Directory of Certified Products. I

Printed Circuit Board Connector Wiring Diagram and Name SiE18-20124 Printed Circuit Board Connector Wiring Diagram and Name1. Printed Circuit Board Co

SiE18-201 Printed Circuit Board Connector Wiring Diagram and NamePrinted Circuit Board Connector Wiring Diagram and Name 251.2 Outdoor Unit RMX140JVMB

Printed Circuit Board Connector Wiring Diagram and Name SiE18-20126 Printed Circuit Board Connector Wiring Diagram and NameOther DesignationsPrinted C

SiE18-201 Printed Circuit Board Connector Wiring Diagram and NamePrinted Circuit Board Connector Wiring Diagram and Name 27Printed Circuit Board (2)(F

Printed Circuit Board Connector Wiring Diagram and Name SiE18-20128 Printed Circuit Board Connector Wiring Diagram and Name1.3 FTX25 / 35J Series, FTX

SiE18-201 Table of Contents iii 3.7 Oil Return Operation... 743.8 Defrost

SiE18-201 Printed Circuit Board Connector Wiring Diagram and NamePrinted Circuit Board Connector Wiring Diagram and Name 29Printed Circuit Board (1)~(

Printed Circuit Board Connector Wiring Diagram and Name SiE18-20130 Printed Circuit Board Connector Wiring Diagram and Name1.4 FTXD50~71JV SeriesHeat

SiE18-201 Printed Circuit Board Connector Wiring Diagram and NamePrinted Circuit Board Connector Wiring Diagram and Name 31Printed Circuit Board (2)(P

Printed Circuit Board Connector Wiring Diagram and Name SiE18-20132 Printed Circuit Board Connector Wiring Diagram and Name1.5 CDX25~60HAV Series, CDX

SiE18-201 Printed Circuit Board Connector Wiring Diagram and NamePrinted Circuit Board Connector Wiring Diagram and Name 33Printed Circuit Board (1)~(

Printed Circuit Board Connector Wiring Diagram and Name SiE18-20134 Printed Circuit Board Connector Wiring Diagram and Name1.6 FLX25~60HV Series, FLX5

SiE18-201 Printed Circuit Board Connector Wiring Diagram and NamePrinted Circuit Board Connector Wiring Diagram and Name 35Printed Circuit Board (1)(C

Printed Circuit Board Connector Wiring Diagram and Name SiE18-20136 Printed Circuit Board Connector Wiring Diagram and NamePrinted Circuit Board (3)(D

SiE18-201Main Functions 37Part 4Main FunctionsIndoor Unit1. Main Functions...

Main Functions SiE18-20138 Main Functions1. Main Functions1.1 Main Functions in Split Type1.1.1 Wide Angle Flaps, Louvers and Auto-SwingFor FTX25/35J

SiE18-201 iv Table of Contents 1.12 Equalizing Control (Heating)... 1371.13 Oil Return O

SiE18-201 Main FunctionsMain Functions 391.1.2 Fan Speed Control for Indoor UnitsFor FTX25/35J SeriesControl ModeThe airflow rate can be automatically

Main Functions SiE18-20140 Main Functions1.1.5 Washable GrilleWashable grille is for FTK(X)25/35 JNote: Refer to P97 in Si12-001 for FTK25/35 J Series

SiE18-201 Main FunctionsMain Functions 411.1.10 Automatic Operation (Heat Pump Only)Automatic Cooling/Heating FunctionWhen the AUTO mode is selected w

Main Functions SiE18-20142 Main Functions1.1.11 Night Set ModeWhen the OFF Timer is set, the New Night Set Circuit automatically activates.The Night S

SiE18-201 Main FunctionsMain Functions 431.1.15 Intelligent EyeFor FTX25/35 JSeries OnlyOutlineThe function that detects existence of humans in the ai

Main Functions SiE18-20144 Main Functions Since the set temperature is shifted by 2˚C higher for 40 minutes, compressor speed becomes low and can rea

SiE18-201 Main FunctionsMain Functions 451.1.17 Program Dry OperationBy the function of the microcomputer, program dry operation reduces the humidity

Main Functions SiE18-20146 Main Functions1.1.18 Cooling Monitoring FunctionMonitoring function is activated while cooling and program dry operation ar

SiE18-201 Main FunctionsMain Functions 471.1.19 Freeze Protection FunctionWhen the indoor heat exchanger temperature falls below “A”˚C in cooling or p

Main Functions SiE18-20148 Main Functions1.1.23 Air Flow Automatic (Auto Fan Speed)In cooling operation, if automatic airflow has been selected, the w

SiE18-201 Table of Contents v Part 10 Removal Procedure...261 1. For BPMK928B42 · 43 ...

SiE18-201 Main FunctionsMain Functions 491.1.25 Emergency Operation Function (ON/OFF Switch)The unit can be turned ON only by pressing ON/OFF operatio

Main Functions SiE18-20150 Main Functions1.1.27 Filter Check Indicator The filter check indicator located at the center of the unit will indicate the

SiE18-201 Main FunctionsMain Functions 511.2 SkyAirThermostat ControlExisting cooling/heating preset temperature range has been changed.Draft Avoidanc

Main Functions SiE18-20152 Main FunctionsDraft Avoidance Control 2When hot start is cancelled or when cold air prevention control is finished, if the

SiE18-201 Main FunctionsMain Functions 531.3 Cautions when SkyAir [Auto] [FAN] are used1.3.1 Heat Pump ModelThe Corresponding ModelsFHYB35 / 45 / 60 /

Main Functions SiE18-20154 Main Functions

SiE18-201Main Functions 55Part 5Main FunctionsOutdoorUnit / BP Unit1. Refrigerant System and Function of Functional Parts of Outdoor Unit .571.1 Refr

SiE18-20156 Main Functions3.35 Inter-BP Units Gas Pipe Isothermal Control... 1183.36 BP Unit Motorized Valve Cont

SiE18-201 Refrigerant System and Function of Functional Parts of Outdoor UnitMain Functions 571. Refrigerant System and Function of Functional Parts o

Refrigerant System and Function of Functional Parts of Outdoor Unit SiE18-20158 Main Functions1.2 Major Functional Parts Compressor : JT100F-VDThe ap

SiE18-201 vi Table of Contents

SiE18-201 Refrigerant System and Function of Functional Parts of Outdoor UnitMain Functions 59 EVT : Motorized valve in non-operating room BP unitIn

Refrigerant System and Function of Functional Parts of Outdoor Unit SiE18-20160 Main Functions1.3 Protective Devices, Thermistors, SensorsA HPSWhen th

SiE18-201 Protection DeviceMain Functions 612. Protection Device2.1 Outdoor UnitRMX140JVMM1C Compressor JT100F-VD 3.3kW ° 1 ScrollJ1HC Crankcase Heate

Protection Device SiE18-20162 Main Functions2.2 BP UnitBPMK928B42, BPMK928B43FU1 ~ 4 FUSE (3EB82010-1) 250V 3.15AY1E(EVH)ElectronicExpansion ValveMa

SiE18-201 System controlMain Functions 633. System control3.1 Outline of System ControlYESYESYESNONONOBP unitBP unitEVGEVLEVGEVLBP unitBP unitEVGEVG(M

System control SiE18-20164 Main Functions3.2 Mode ConfigurationAir Conditioner Control ModeAir conditioner control modeDetermination of Normal Operati

SiE18-201 System controlMain Functions 653.3 Standby Control at Power ONPurpose of the FunctionTo initialize the motorized valve at power ON, to deter

System control SiE18-20166 Main Functions3.4 Cooling / Heating Standby Operation at StartupPurpose of the FunctionTo prepare for the next startup afte

SiE18-201 System controlMain Functions 673.5 Equalizing ControlPurpose of the FunctionTo provide equalizing control after a standby operation in order

System control SiE18-20168 Main FunctionsEqualizing Control in Heating4-way valve(Delay timer for OFF)Command frequencyOutdoor unit upper fanOutdoor u

SiE18-201 Introduction vii 1. Introduction 1.1 Safety Cautions Cautions and Warnings Be sure to read the following safety cautions before conducting

SiE18-201 System controlMain Functions 693.6 Determination of Initial Frequency3.6.1 Determination of Operation FrequencyPurpose of the FunctionTo con

System control SiE18-20170 Main Functions3.6.2 BP Unit Command Conversion1. ∆D (room temperature − temperature setting) signals from BP units are conv

SiE18-201 System controlMain Functions 713.6.3 Determination of Initial FrequencyInitial frequency setting (determination of initial operating frequen

System control SiE18-20172 Main FunctionsDetermination of initial frequency for coolingInitial frequency FSR is determined based on the correction of

SiE18-201 System controlMain Functions 73Determination of initial frequency for heatingInitial frequency FSR is determined based on the correction of

System control SiE18-20174 Main Functions3.7 Oil Return OperationPurpose of the FunctionTo collect refrigerating machine oil that adheres on the inter

SiE18-201 System controlMain Functions 75Oil recovery operation in heating modeTOW1(150min)Cumulative heating timeCompressor operation frequencyCompre

System control SiE18-20176 Main Functions3.8 Defrost OperationOutline During heating operation, the outdoor heat exchanger intermediate temperature of

SiE18-201 System controlMain Functions 773.9 Pre-Equalization Standby OperationOutline In local air conditioner control mode and frequency fix mode, t

System control SiE18-20178 Main Functions3.10 Equalizing ControlOutline This function provides equalizing control after a standby operation in order t

Introduction SiE18-201 viii 1.1.2 Cautions Regarding Products after Repair Caution Do not repair the electrical components with wet hands.Working on

SiE18-201 System controlMain Functions 79Equalizing control in heatingStandbyoperation4-way valve(OFF delay timer)CommandfrequencyOutdoor unitlower fa

System control SiE18-20180 Main Functions3.11 Capacity Control3.11.1 Outdoor Unit Motorized Valve Low Pressure (Cooling Capacity) ControlOutline This

SiE18-201 System controlMain Functions 813.11.2 Outdoor Unit Motorized Valve High Pressure (Heating Capacity) ControlOutline This function opens the g

System control SiE18-20182 Main Functions3.12 Peak Cut ControlOutline Based on the indoor heat exchanger intermediate temperature signal sent from the

SiE18-201 System controlMain Functions 833.13 Freeze-Up PreventionOutline According to the freeze prevention status sent from the BP unit, the compres

System control SiE18-20184 Main Functions3.14 Gas Shortage MalfunctionOutline A gas shortage malfunction is detected by using electric current and by

SiE18-201 System controlMain Functions 853.15 Discharge Pipe ControlOutline With the internal compressor temperature used as a substitute of the disch

System control SiE18-20186 Main Functions3.16 Input Current Control3.16.1 Input Current Control IOutline The input current is detected by CT during co

SiE18-201 System controlMain Functions 87Details The input current is used to control the upper limit of the operating frequency in order to maintain

System control SiE18-20188 Main Functions3.16.2 Input Current Control II (High Pressure Control)Outline Based on the input current and input voltage,