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Samsung AC026JXSCEH, Service Manual

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Samsung AC026JXSCEH Service Manual Download Page 27

3-18

Samsung Electronics

No

Parts

Procedure

Remark

8

Fan

1)  Unscrew and remove 3 screws in the 

Ass'y Fan Propeller-Total.  

(Use +Screw Driver)

2)  Remove the Cover from the Fan 

Propeller

 

3)  Turn 2 mounting nuts as shown in     

the picture and remove it.  

(Use Adjustable Wrench)

  

When you assemble the Fan Propeller 

and the Cover, must check the rib in 
the hole.

Summary of Contents for AC026JXSCEH

Page 1: ... 3 Disassembly and Reassembly 4 Troubleshooting 5 PCB Diagram 6 Wiring Diagram 7 Reference Sheet AC026KNADEH AC035KNADEH AC071KNADEH AC026JXSCEH AC035JXSCEH AC071JXSCEH Model AC026KNADEH AC035KNADEH AC071KNADEH AC026JXSCEH AC035JXSCEH AC071JXSCEH IndoorUnit OutdoorUnit AC026KNADEH EU AC035KNADEH EU AC071KNADEH EU Model Code AC026JXSCEH EU AC035JXSCEH EU AC071JXSCEH EU ...

Page 2: ...oms 4 10 4 3 1 Indoor temperature sensor open short 4 10 4 3 2 Indoor heat exchanger temperature sensor open short 4 11 4 3 3 Indoor FAN error 4 12 4 3 4 Communication error after finishing Tracking 4 13 4 3 5 Indoor unit float sensor error 4 14 4 3 6 EEPROM circuit failure 4 15 4 3 7 Outdoor unit is not powered on 4 16 4 4 Troubleshooting by symptoms 4 18 4 4 1 Communication error 4 18 4 4 2 Outd...

Page 3: ...nk over heat 4 34 4 4 15 Comp Vlimit error Comp current limit error 4 35 4 4 16 EEPROM error OTP error 4 36 4 4 17 AC zero cross signal error 4 37 4 4 18 Operation condition secession error 4 38 4 4 19 Capacity miss match error 4 39 4 4 20 Gas leak error 4 40 15 PCB Diagram 5 1 5 1 PCB Diagram 5 1 5 1 1 Indoor Unit PCB 5 1 5 1 4 Outdoor Unit PCB 5 3 16 Wiring Diagram 6 1 6 1 Indoor Unit 6 1 6 2 Ou...

Page 4: ...aused by tracking or short circuit Fasten the valve caps of service valves and charging valves of outdoor unit as much as possible using adjustable wrenches Check the status of the components assembly after repair service The status must be the same as before the repair service 1 2 Precautions related to static electricity and PL The PCB power supply block is susceptible to static electricity Ther...

Page 5: ...k Instruct end users to separate the batteries from the remote controllers and store them separately when the product is not used for long time Otherwise leakage from the dry cell may cause problems with the remote controller 1 4 Other precautions The pipes should have no leaks during installation and the compressor must be stopped before removing connecting pipes for pump down work Operating the ...

Page 6: ...invertertechnology itmakesaroomcoolwithhighlyenergysavingandarisestheefficiencyofairconditioner Long Ambient Operation In Low Temperature Itcanarisethereliabilityandthecapacityoftheairconditioner especiallyoperatedinlowtemperature Eco friendly Product Lead Free ROHS WEEE Easy installation of ultra lightweight indoor unit 2 Product Specifications 2 1 The Feature of Product ...

Page 7: ...g STD W 610 940 Heating STD W 750 1020 Operation current Cooling STD A 3 1 4 4 Heating STD A 3 6 4 7 Noise Cooling Heating Indoor unit In case of strongest air blow dBA 43 43 43 43 Outdoor unit In case of strongest air blow dBA 52 52 54 54 Refrigerant R410A g 1270 1270 Connecting Pipe Liquid mm 6 35 6 35 Gas mm 9 52 9 52 Additional Refrigerant R410A g m Standard m 5 5 Extension length Total m 20 2...

Page 8: ...r Consumption Cooling STD W 1860 Heating STD W 2330 Operation current Cooling STD A 8 4 Heating STD A 10 6 Noise Cooling Heating Indoor unit In case of strongest air blow dBA 51 51 Outdoor unit In case of strongest air blow dBA 58 60 Refrigerant R410A g 2900 Connecting Pipe Liquid mm 9 52 Gas mm 15 88 Additional Refrigerant R410A g m 25 Standard m 5 Extension length Total m 75 Extension length Ele...

Page 9: ...te Control 4301 000121 2 User s Installation Manual DB68 06253A DB68 06254A 1 1 Remote Control Holder DB61 06087A 1 M4 x 16 Tapped Screws 6002 000234 2 Cap Screws DB67 01404B 1 CARD WARRNATY DB68 02596B 1 Drain Plug DB67 20011A 1 Essential Offer Outdoor Unit Rubber Leg DB67 01533A 4 ASSY INSTALLATION MANUAL DB68 05400A 1 2 3 Accessories ...

Page 10: ...Samsung Electronics 3 1 Item Remarks SCREW DRIVER Adjustable Wrench 8mm 10mm 13mm M6 M8 Hex Wrench Necessary Tools 3 Disassembly and Reassembly ...

Page 11: ... Parts Procedure Remark 1 PANEL FRONT 1 Stopthedrivingofairconditionerandshutoff mainpowersupply 2 DetachFILTERPREfromthePANELFRONT 3 CoverPanelisassembledonbottomofindoor unitasshowninthefigure RemovetheCapScrewasshownontheright sideandthenremovethescrewandseparate theCoverPanel ...

Page 12: ...odybyHookincenterareaand sidearea 5 SeparatethehookafterpushingbothendofCover Panelasshowninthefigure Watchoutforthedamageofthehook 6 Raisefrontpart upwardobliquelyasshowninthe figureandthenremovethehooks Center area Side area Side area HOOK 015 022 028 036 045 056 071 082 ...

Page 13: ... Parts Procedure Remark Caution AssemblyofCoverPanelafterserviceend Reassemblyisinthereverseorderofthe removal Pipinganddrainhosemustbecarefulnotto damageandProgressmustbedonewithboth hands Hook Side Hook Center Screw Cap Screw ...

Page 14: ...NEL FRONTfromthemain frame unfasten2screwsatthebottom use ScrewDriver 8 TodetachtheCOVER PANELfromthemain frame loosen4HOOKStructures Whenseparatethehook Usethe screwDriver ScrewDriverInsertthehookandthenpullthe hookasshownontherightside Watchoutforthedamageofthehook ...

Page 15: ...3 6 Samsung Electronics No Parts Procedure Remark 9 RemovethePanelFrame fromtheMain Frameasshownontherightside ...

Page 16: ...parate the connector pull pressing the locking button 2 Lossen Stepping Motor EEV Display Sensor SPI Fuse Wire Caution When you separate the connector pull pressing the locking button 3 Lossen Motor Terminal Wire Caution When you separate the connector pull pressing the locking button 4 Loosen Earth Wire ...

Page 17: ...mark 5 EVAPORATOR 9 TakeofftheCASE CONTROLfrom themainframeafterloosentheremaining connector Caution Whenyouseparatetheconnector pullpressingthelockingbutton 3 TRAYDRAIN 1 TodetachTRAY DRAINfromthemainframe pullthebottomoftheTRAY DRAINtowards you ...

Page 18: ...arts Procedure Remark 4 Evaporator 1 DetachtheHOLDERPIPE 2 Unfastenthescrewattheleftside use ScrewDriver 3 Unfastenthescrewattherightside use ScrewDriver 4 TodetachEvaporatorfromthemainframe pullthebottomoftheEvaporatortowards you ...

Page 19: ... 10 Samsung Electronics No Parts Procedure Remark 5 FANMOTOR CROSSFAN 1 Unfastenthescrew use ScrewDriver 2 DetachtheFANMotorcase 3 Unfastenthescrewalittle use ScrewDriver 4 PulltheCROSS FANtotheleftside ...

Page 20: ...s Procedure Remark 1 common work 1 Loosen 1 pcs screw of cover control and detach it 2 Loosen 5 pcs screws on both right and left cabinet side edges and to detach the cover top 3 Loosen 7 screws fixed to disassemble cabi front and detach it 3 2 Outdoor unit ...

Page 21: ... Samsung Electronics No Parts Procedure Remark common work 4 Loosen 7 screws to disassemble the cabi right and detach it 5 Loosen 2 screws to disassemble steel bar 6 Loosen 3 screws to disassemble cabi left ...

Page 22: ... No Parts Procedure Remark 2 fan motor 1 Loosen 1 screw as indication and detached the fan 2 Loosen 4 pcs motor screws and disconnect the wire between assy control out and motor 3 Loosen 2 pcs bracket motor screw and detach it ...

Page 23: ...1 screw from cover control 2 Detach several connections from assy con trol out take out assy control out 4 Heat exchanger 1 Release the refrigerant at first 2 Loosen fixing screw on both side 3 Disassemble the pipes in both inlet and outlet with welding torch 4 Detach the heat exchanger ...

Page 24: ...Samsung Electronics 3 15 No Parts Procedure Remark 5 compressor 1 Disconnect the compressor lead wire 2 Disassembly the felt comp sound loosen the 3 bolts at the bottom of compres sor ...

Page 25: ...mounting screw in the Cabinet Front RH Use Screw Driver 2 Cabi Top 1 Unscrew and remove 9 screws on each side of the Cabinet Top Use Screw Driver 3 Cabi Install Front 1 Unscrew and remove 1 screw in the Cabinet Install Front Use Screw Driver 4 Guard Cond 1 Pull the sensor from Guard Cond 2 Unscrew and remove 4 screws in the Guard Cond Use Screw Driver ...

Page 26: ...r from Cabi Back RH 2 Unscrew and remove 4 screws on each side of the Cabinet Back RH Use Screw Driver 6 Cabi Install Back 1 Unscrew and remove 1 screw in the Cabinet Install Back Use Screw Driver 7 Cabi Front LF 1 Unscrew and remove 10 screws in the Cabinet Front LF Use Screw Driver ...

Page 27: ... remove 3 screws in the Ass y Fan Propeller Total Use Screw Driver 2 Remove the Cover from the Fan Propeller 3 Turn 2 mounting nuts as shown in the picture and remove it Use Adjustable Wrench When you assemble the Fan Propeller and the Cover must check the rib in the hole ...

Page 28: ...e 8 Motor mounting screws Use Screw Driver 3 Disconnect the Motor wire From Ass y Control Out 10 Bracket Motor 1 Unscrew and remove 2 mounting screws in Bracket Motor Use Screw Driver 11 Heater 1 Unscrew and remove 4 screws on the Base Out Use Screw Driver 2 Disconnect the heater wire from the Ass y Control Out ...

Page 29: ...the Coolant first 2 Unscrew and remove 2 mounting screws in Service Valve Use Screw Driver 3 Separate the pipe from the Entrance Exit using a welder When removing the compressor Heat Exchanger and Pipe purge the Coolant inside the Compressor completely and remove the pipe with a welding flame 14 Assy EEV Valve 1 Unscrew and remove 2 mounting screws in Service Valve Use Screw Driver 2 Separate the ...

Page 30: ...er wireless remocon which can set 24 digit option code Following is the instructions of setting optioncode with wireless remocon of MR EH01 Please refer to the wired remocon installation manual for setting with the wired remocon High Temp Button High Fan Button Mode change Low Temp Button Low Fan Button Entering mode for setting option Option setting mode Option setting is available from SEG1 to S...

Page 31: ...ess the button will be selected in rotation 6 Setting Fan mode Press Mode button to be changed to FAN mode in the ON status 7 Setting SEG9 SEG10 option Press Low Fan button to enter SEG9 value Press High Fan button to enter SEG10 value Each time you press the button will be selected in rotation 8 Setting Heat mode Press Mode button to be changed to HEAT mode in the ON status 9 Setting SEG11 SEG12 ...

Page 32: ...tton will be selected in rotation 18 Setting Heat mode Press Mode button to be change to HEAT mode in the OFF status 19 Setting SEG23 SEG24 mode Press Low Fan button to enter SEG23 value Press High Fan button to enter SEG24 value Each time you press the button will be selected in rotation SEG16 SEG18 SEG21 SEG23 SEG17 SEG20 SEG22 SEG24 Step 4 Input option Press operation button with the direction ...

Page 33: ...ess MAIN RMC When A F isenteredtoSEG5 6 theindoorunitMAINADDRESSisnotchanged IfyousettheSEG3as0 theindoorunitwillmaintainthepreviousMAINADDRESSevenifyouinputtheoptionvalueofSEG6 IfyousettheSEG9as0 theindoorunitwillmaintainpreviousRMCADDRESSevenifyouinputtheoptionvalueofSEG11 12 Option No 0AXXXX 1XXXXX 2XXXXX 3XXXXX Option SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 Explanation PAGE MODE Setting Main address RES...

Page 34: ...ndoor unit installation option suitable for the condition of each installation location Option No 02XXXX 1XXXXX 2XXXXX 3XXXXX Option SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 Explanation PAGE MODE RESERVED Useofexternal temperaturesensor Useofcentralcontrol RESERVED Indication andDetails Indication Details Indication Details Indication Details Indication Details 0 2 0 Disuse 0 Disuse 1 Use 1 Use Option SEG7 S...

Page 35: ... Indoor 3 4 Indoor 4 1 2 C 2 5 C If you input a number other than 0 4 on the individual control of the indoor unit SEG 20 the indoor is set as Indoor 1 Example If you want to set as Exterior temperature sensor USE External control USE Number of hours using filer 2000hr SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 0 2 1 0 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 1 0 0 SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 2 1 0 0 6 SEG19 S...

Page 36: ...dication Details Indication Details Indication Details 0 D Option mode 0 F Tens digitof SEG 0 9 Unitdigitof SEG 0 9 The changed value 0 F When changing a digit of an indoor unit address setting option set the SEG3 as A When changing a digit of indoor unit installation option set the SEG3 as 2 Ex When setting the buzzer control into disuse status Option SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 Explanation PAG...

Page 37: ... Low pressure s w 2nd detection 5 Abnomally high temperature on discharged air on outdoor unit 2nd detection 6 Indoor operation stop due to unconfirmed error on outdoor unit 7 Error due to reverse phase detection 8 Comp stop due to freeze detection 6th detection 9 High pressure sensor is detached 10 Low pressure sensor is detached 11 Outdoor unit copression ration error 12 Outdoor sump down_1 prev...

Page 38: ...416 Discharge temperature of a compressor in an outdoor unit is overheated 11 E440 Heating operation is not available since the outdoor air tempera ture is over 30 C Heating E441 Cooling operation is not available since the outdoor air tempera ture is lower than 5 C Cooling 12 E458 Outdoor unit BLDC Fan 1 or Fan 2 error FAN1 error E475 FAN2 error 13 E461 Comp Starting error 14 E462 Primary Current...

Page 39: ...m the connector in PCB Restart the system after replacing the PCB Restart the system after connecting to the PCB connector Indoor temperature sensor failure replace Remove the indoor temperature sensor connector from the PCB and measure the resistance between two terminals 4 3 Troubleshooting by symptoms 4 3 1 Indoor temperature sensor open short Current temperature C Resistance kΩ 40 5 800 35 6 9...

Page 40: ... exchanger temperature sensor replace Remove the indoor heat exchanger temperature sensor connector from the PCB and measure the resistance between two terminals Indoor unit display Symptom Short or open circuit of indoor heat exchanger temperature sensor Failure Short or open circuit in the corresponding sensor 4 3 2 Indoor heat exchanger temperature sensor open short Current temperature C Resist...

Page 41: ... motor connector is disconnected check the motor fan assembly status 4 3 3 Indoor FAN error Yes No Yes Is there foreign substance stuck in the motor fan Yes Is the motor connector disconnected from the PCB Replace the PCB and restart the unit Connect the connector to PCB and restart the unit Remove the foreign substance and restart the unit ...

Page 42: ...eform between the lines square wave with amplitude over 0 7V as shown in the following picture 0 7V 0 7V Good Bad Check the communication cable and replace the indoor unit PCB Remove the communication cable connecting the outdoor unit to indoor unit and measure the signal on LINE 2 of the outdoor unit with a scope Reconnect the cable connecting the outdoor unit to the indoor unit and restart the u...

Page 43: ...water level in the drain pan high Does drain pump operate when compressor operates Same error occurs again No Drain pump PCB Is the terminal voltage around AC 220V Is the water level in drain pan decreasing Reset the indoor unit power and check the operation of the drain pump it vibrates when operating Normal operation Replace the indoor unit PCB Reassemble the floating sensor connector and reset ...

Page 44: ...Symptom EEPROM circuit failure Failure EEPROM component failure EEPROM circuit parts missing damaged soldering failure 4 3 6 EEPROM circuit failure No Yes Are the EEPROM circuit components in good conditions missing components damage soldering failure Replace the PCB if the restart fails ...

Page 45: ...ler connected correctly 2 Check procedure Yes Turn off the main power switch circuit break of power outlet and turn on again after 30 seconds Check the input power No Is the outdoor unit power supply L N 220V Yes Check the connection of the terminal block No Is the outdoor unit power voltage L N 220V Yes Replace the inverter PBA No Is the voltage between the terminal 2 and 4 of the bridge diode 22...

Page 46: ...Samsung Electronics 4 17 Yes Outdoor unit is not powered on Initial diagnosis cont Yes Connect the reactor No Is the reactor connector connected correctly Replace the PBA Cont ...

Page 47: ...rocedure Yes Restart after power off Terminate the service Exchange the indoor unit PBA No Is the communication error occurred again Yes Correct the wrong cable No Is the connection of power cable and communication cable normal Yes Exchange the PBA of no power unit No Is the power is normal check the LED Lamp Yes Yes Terminate the service No Is the communication error occurred again Exchange the o...

Page 48: ...ect the sensor connector Micom error or connector check No Is the sensor resistance value 1 2 10kohm 3 at the room temperature of 25 C Is the sensor connector CN251 connected correctly in accordance with a color BLU 6PIN Sensor Replace Sensor resistance value 20 C 12 09kohm 30 C 8 31kohm 35 C 6 94kohm 40 C 5 83kohm No No Exchange the PBA of no power unit Yes Below 0 5V or Over 4 5V Yes Connect the...

Page 49: ...ture of 25 C Is the sensor connector CN502 connected correctly in accordance with a colorRED 4PIN Sensor Replace Sensor resistance value 20 C 12 09kohm 30 C 8 31kohm 35 C 6 94kohm 40 C 5 83kohm No No Exchange the PBA of no Ourdoor PBA Yes Below 0 5V or Over 4 5V Yes Connect the sensor to PBA connector 4pin supply power and measure the voltage of 1 2 in the connector Exchange the Outdoor PBA Yes ...

Page 50: ...procedure PF2 Yes Reconnect the sensor connector Micom error or connector check No Is the sensor resistance value 5 6 10kohm 3 at the room temperature of 25 C Is the sensor connector CN251 connected correctly in accordance with a color BLU 6PIN Sensor Replace Sensor resistance value 20 C 12 09kohm 30 C 8 31kohm 35 C 6 94kohm 40 C 5 83kohm No No Exchange the Outdoor PBA Yes Below 0 5V or Over 4 5V ...

Page 51: ...emperature of 25 25 C Is the sensor connector CN501 connected correctly in accordance with a colorRED 4PIN Sensor Replace Sensor resistance value 20 C 12 09kohm 30 C 8 31kohm 35 C 6 94kohm 40 C 5 83kohm No No Exchange the Outdoor PBA Yes Below 0 5V or Over 4 5V Yes Connect the sensor to PBA connector 4pin supply power and measure the voltage of 3 4 in the connector Exchange the Outdoor PBA Yes ...

Page 52: ...oting procedure PF2 Yes Reconnect the sensor connector Micom error or connector check No Is the sensor resistance value 3 4 10kohm 3 at the room temperature of 25 C Is the sensor connector CN251 connected correctly in accordance with a color BLU 6PIN Sensor Replace Sensor resistance value 20 C 242kohm 30 C 166ohm 35 C 138ohm 40 C 115kohm No No Exchange the Outdoor PBA Yes Below 0 5V or Over 4 5V Y...

Page 53: ...m error or connector check No Is the sensor resistance value 3 4 CN501 10kohm 3 at the room temperature of 25 25 C Is the sensor connector CN502 connected correctly in accordance with a colorRED 4PIN No No Exchange the Outdoor PBA Yes Below 0 5V or Over 4 5V Yes Connect the sensor to PBA connector 4pin supply power and measure the voltage of 3 4 in the connector Exchange the Outdoor PBA Yes ...

Page 54: ...e the Outdoor PBA Download the EEPROM data No Is the discharge over temperature sensor error appeared again Terminate the service No No Terminate the service Is the discharge over temperature sensor error appeared again Is the discharge over temperature sensor error appeared again The condition is too poor for air conditioner to operate Wait until discharge temperature is decreased Restart after p...

Page 55: ...d Separate the Fan motor wire from CN901 on Outdoor PBA PBA problem or Motor problem Change the PBA first and check the operation No Yes Does the fan rotate Terminate the service Exchange the Fan motor No No No Follow the check procedure of outdoor unit power supply error check Exchange the Outdoor PBA Is the fan error appeared again Is there short among each pin 1 6 Is the voltage of CN901 3 5 an...

Page 56: ...pressor normal 2 Troubleshooting procedure Terminate the service Download the EEPROM data No Is the restart error occurred again Is the connection of compressor wire is normal Connect the comp wire normally No No No Yes Terminate the service Exchange the Outdoor PBA Is the restart error occurred again Is the compressor body and interphase resistance insulated Exchanged the Compressor Restart after...

Page 57: ...tance of compressor normal 2 Troubleshooting procedure Terminate the service No Is the restart error occurred again Is the connection of compressor wire is normal PBA and Compressor Connect the comp wire normally No No No Yes Terminate the service Exchange the Outdoor PBA Is the restart error occurred again Is the compressor body and interphase resistance insulated Exchanged the Compressor Restart...

Page 58: ... error occurred Is the connection of compressor wire is normal No No Yes No No No No No Yes Exchange the Outdoor PBA Correct the sensor position or exchange the sensor Is the O C error occurred again Terminate the service Restart after returning to the normal load Terminate the service Connect the comp wire normally Terminate the service Is the restart error occurred again Is the condition of indo...

Page 59: ...04 R005 R006 R007 value is normal Outdoor PBA 2 Troubleshooting procedure Connect the reactor wire No Is the connected of reactor wire PBA Reactor Is the DC_link voltage CE101 or CE001 is normal in operation mode Normal range 280Vdc 320Vdc Check the power input No No No No Exchange the Outdoor PBA Exchange the Outdoor PBA IstheDC_linksensingvoltage R104orR004 isnormalin operationmode Normalrange 0...

Page 60: ...ormal Outdoor PBA 2 Troubleshooting procedure Connect the reactor wire No Is the connected of reactor wire PBA Reactor Is the the input voltage is nomal Normal range 180Vac 270Vac Is the reactor insulation damaged Check the input power in the powercord No No No No Check the input power Exchange the Outdoor PBA Exchange the Outdoor PBA Is theDC_linkvoltage CE101orCE001 isnormalinoperation mode Norm...

Page 61: ...error 4 Is the interphase resistance of compressor normal 2 Troubleshooting procedure Restart after returning to the normal load No Yes Is the condition of indoor outdoor temperature normal load Is the I_trip error occurred again Terminate the service No No No No Correct the sensor position or exchange the sensor Correct the cable connection Isthepositionoftemperaturesensorandthesensingvalue norma...

Page 62: ...the IPM Shunt PF2 R451 R452 R453 PF23 R413 R414 R415 resistance value correct Check the resistor is opened 3 Is there no short or open around IC451 PF2 or IC451 IC452 PF3 2 Troubleshooting procedure Exchange the Outdoor PBA No Is the PFC shunt and IPM shunt resistance value correct No Terminate the service Isthecurrentsensorerrorappearedagain Exchange the Outdoor PBA Restart after power off Yes Ye...

Page 63: ... Is the gap PBA heatsink 3 Is the fan operation normal 4 Is the cover assembly in control box normal 2 Troubleshooting procedure Fastening the screw No Are there screws in PBA heatsink 4 screws No Check the fan connection Change the Fan motor Is the fan operation normal Exchange the Outdoor PBA Restart after power off Yes Yes Yes ...

Page 64: ...rminate the service Exchange the Outdoor PBA No No Yes IIs the O C error occurred Is the O C error occurred again Terminate the service No No No No No No Connect the comp wire normally Terminate the service Correct the sensor position or exchange the sensor Restart after returning to the normal load Is the connection of compressor wire is normal Is the O C error occurred again Is the condition of ...

Page 65: ...ere a short around IC202 PF2 or IC701 PF3 3 Did you download or insert EEPROM IC after changing outdoor PBA 2 Troubleshooting procedure Terminate the service No Restart after power off Is the error appeared again Exchange the Outdoor PBA power off and download EEPROM data or Insert the service EEPROM IC Yes ...

Page 66: ...ist 1 Check the power condition at customer s house Is there any power noise 2 Have been there power failure 2 Troubleshooting procedure Terminate the service No Is the AC line zero cross signal error appeared again Exchange the Outdoor PBA Restart after power off Yes ...

Page 67: ...2 Troubleshooting procedure Terminate the service No Is the operation condition secession error appeared again Heating mode Is the outdoor temperature over 40 C or under 30 C Cooling mode Is the outdoor temperature under C Thetemperatureconditionistoopoortooperate Wait until temperature is changed Restart after power off Yes Yes ...

Page 68: ...rocedure Exchange the one of them according to the exact model spec Terminate the service Terminate the service No No No Is the capacity miss match error appeared again Is the capacity miss match error appeared again Is the rated Btu between indoor unit and outdoor unit Download the EEPROM data Exchange the Outdoor PBA Exchange the Indoor PBA Reset the option code again at indoor unit Yes Yes Yes ...

Page 69: ...heck the pipe crack Fill up the refrigerant No No Is the position of indoor eva_in sensor normal No No No Terminate the service Change the EEV valve Connect the EEV valve Is the gas leak error appeared again Is the EEV valve connection normal Is the EEV valve is operation Check the sound of EEV valve after power on Is the pressure of refrigerant normal Exchange the Indoor PBA Exchange the Outdoor ...

Page 70: ...Samsung Electronics 5 1 5 PCB Diagram 5 1 PCB Diagram 5 1 1 Indoor Unit PCB AC026KNADEH AC035KNADEH AC071KNADEH Main PBA 4 5 6 7 8 10 8 11 12 13 1 2 3 ...

Page 71: ...TURE SENSOR SIGNAL 6 GND 1 3 LED SIGNAL 4 REMOCON SIGNAL 5 GND 6 DC 5V 7 8 REMOCON SIGNAL 9 11 NOT USED 1 GND 2 NOT USED 3 DC 5V 4 7 EEPROM SIGNAL 1 8 DOWNLOAD SIGNAL 9 GND 10 11 DC 5V 12 16 DOWNLOAD SIGNAL 17 GND 18 20 DOWNLOAD SIGNAL 1 2 COMMUNICATION SIGNAL 3 4 SUB PBA SIGNAL 5 EXTERNAL CONTROL SIGNAL 6 COMP CHECK SIGNAL 7 ERROR CHECK SIGNAL 8 DC 5V 9 GND 10 DC 12V 11 14 COMMUNICATION SIGNAL CN...

Page 72: ...5 3 Samsung Electronics Sub PCB 1 1 2 19 20 COMM SIGNAL 3 18 EXTERNAL CONTROL 4 17 COMP CHECK 5 16 ERROR CHECK 6 VCC DC5V 7 14 GND 8 13 15 DC12V 9 12 COMM SIGNAL CN1 2WIRES COMM ...

Page 73: ...3AVWHT 3 REACTOR DBT081 2PWHT 4 BLDCFAN YW396 06VWHT 5 COMM YW396 02VRED 6 SUBPBAPOWER SMW200 05PBLK 7 EEVA SMW250 05RED 8 COMP DBT061 3PWHT 9 SMPS SMW250 03BLU 10 EEPROM B7P MQWHT 11 TEMPSENSOR SMW200 08PWHT 12 MAINDOWNLOAD YDW200 20BLK 13 SUBPBA SMW200 10PBLK 14 DRED SMW250 05WHT 15 INVDOWNDOWN YDAW200 20TRBLK 16 SUBPBA SMW200 10PWHT 17 ENABLECGND SMW250 03RED 18 EEVB SUBPBA SMW250 05YEL ...

Page 74: ...CTOR SMW250 03 WHT 8 DB65 00320A CN304 DRED DAPC 2009 6P BLK 9 3711 000744 CN103 EARTH YDW236 01 WHT 10 3711 000177 CN303 COMM INDOOR YW396 02V RED 11 3716 001162 CN003 QUIET S W BR 7623 2P BLK 12 3711 005096 CN302 COMM OPTION SMW200 05 BLK 13 3711 007069 CN402 HIGH PRESSURE S W B04B XARK 1 RED 14 3711 007325 CN401 LOW PRESSURE S W B04B XARK 1 BLU 15 3711 001038 CN305 COMM INV SMW250 06 WHT 16 371...

Page 75: ...W engineer debugging 1 DC 360V 2 N C 3 GND 4 DC 15V 5 FAN RPM 6 FAN RPM feedback 1 DC 360V 2 N C 3 GND 4 DC 15V 5 FAN RPM 6 FAN RPM feedback 1 COMP U phase RED 2 COMP V phase BLU 3 COMP U phase YEL Reactor A1 B1 Reactor A2 B2 CN50 2PIN RED Communication CN22 Downloader CN21 DAC ENCODER CN91 FAN2 CN90 FAN1 CN71 COMP 2 3 4 6 5 8 7 1 INVERTER PCB This Document can not be used without Samsung s author...

Page 76: ...Samsung Electronics 5 7 L1 BRN N1 SKY BLU 1 3 AC 220 240V L1 AC POWER L phase N1 AC POWER N phase CN01 AC POWER 3 1 2 EMI PCB This Document can not be used without Samsung s authorization ...

Page 77: ...Operating Instructions and Installation 6 1 Samsung Electronics This Document can not be used without Samsung s authorization 6 Wiring Diagram 6 1 Indoor Unit ...

Page 78: ...Samsung Electronics 6 2 This Document can not be used without Samsung s authorization 6 2 Outdoor Unit AC026JXSCEH AC035JXSCEH ...

Page 79: ...Samsung Electronics 6 3 AC071JXSCEH ...

Page 80: ... General Temp N Non Inv Side Low Temp R Non Inv Side Tropical Temp Z Non Inv Top Tropical Temp U UNITED STATUS DUCT K DVM PLUS4 V DVM Inverter L DVM SLIM G DVM GHP M DVM MINI W DVM WATER C DVM GEO GEOTHERMAL D DVM PLUS3 X DVM PLUS2 J FREE JOINT MULTI P PACK MULTI H DVM HOME E SINGLE T MULTI Y MONO ProductType Indoor Code Type F FLAGSHIP P PREMIUM D DELUXE S STANDARD F CASCADE G CASCADE EEV E MULTI...

Page 81: ...liquid to gas Absorbing heat required for evaporation SERVICE VALVE You can open the valve by turning the need valve counterclockwise using hex wrench and it is used for vacuum gas purging coolant injection coolant purging and indoor outdoor unit connection ACCUMULATOR Accumulator prevents the flow of liquid state coolant into the compressor Liquid state coolant flowing into the compressor will ov...

Page 82: ...al is a property of Samsung Electronics Co Ltd Any unauthorized use of Manual can be punished under applicable International and or domestic law Samsung Electronics Co Ltd Jun 2016 Printed in China Code No DB68 00000A 1 ...

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