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Samsung AC026MNJDKH/EU, Service Manual

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Refer to the service manual in the GSPN(see the rear cover) for the more information.

AIR CONDITIONER

CONTENTS

SYSTEM AIR CONDITIONER

1.  Precautions

2.  Product Specifications

3.  Disassembly and Reassembly

4.  Troubleshooting

5.  PCB Diagram

6.  Wiring Diagram

7.  Reference Sheet

AC026MNADKH
AC035MNADKH
AC052MNADKH
AC071MNADKH

INDOOR UNIT

OUTDOOR UNIT

Model :

AC026MNJDKH/EU

AC035MNJDKH/EU

AC052MNJDKH/EU

AC026MXADKH/EU

AC035MXADKH/EU

AC052MXADKH/EU

AC026MXADKH
AC035MXADKH

AC052MXADKH

Summary of Contents for AC026MNJDKH/EU

Page 1: ...recautions 2 Product Specifications 3 Disassembly and Reassembly 4 Troubleshooting 5 PCB Diagram 6 Wiring Diagram 7 Reference Sheet AC026MNADKH AC035MNADKH AC052MNADKH AC071MNADKH INDOOR UNIT OUTDOOR UNIT Model AC026MNJDKH EU AC035MNJDKH EU AC052MNJDKH EU AC026MXADKH EU AC035MXADKH EU AC052MXADKH EU AC026MXADKH AC035MXADKH AC052MXADKH ...

Page 2: ...or unit addresses 4 6 4 1 3 Setting the installation options in a batch 4 7 4 1 4 Changing the addresses and options individually 4 9 4 2 Items to check before diagnostics 4 10 4 2 1Display Error mode 4 10 4 2 2 Test run mode and View mode 4 11 4 2 3 ECO mode Power save 4 12 4 2 4 Troubleshooting for outdoor unit 4 13 4 2 5 Wired remote controller 4 15 4 3 Troubleshooting by symptoms 4 15 4 3 1 In...

Page 3: ...n error PFC over load 4 36 4 4 12 DC_link voltage sensor error 4 37 4 4 13 Current sensor error Input current sensor error 4 38 4 4 14 Heatsink sensor error Heatsink over heat 4 39 4 4 15 Comp Vlimit error Comp current limit error 4 40 4 4 16 EEPROM error OTP error 4 41 4 4 17 AC zero cross signal error 4 42 4 4 18 Operation condition secession error 4 43 4 4 19 Capacity miss match error 4 44 4 4 ...

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: ...asma Ion Zone is a technology that generates activated hydrogen and oxygen ions which exterminates viruses and allergy causing microbes in the air by neutralizing them and turning into water Special Filter Allergy Filter Deodorizing Filter and Anti bacteria Filter will make air so pure Flexible Pipe Installation Anywhere it can be installed by 6way piping Elegance Design Slim Design 199mm Clean Fr...

Page 7: ...wer consumption Cooling w 700 1 090 Heating w 1 000 1 210 Operation current Cooling A 4 5 6 Heating A 5 5 9 Noise Cooling Heating Indoor In case of strongest air blow dBA 41 43 42 44 Outdoor In case of strongest air blow dBA 51 51 53 53 Refrigerant R 410A g 1 050 1 050 Connecting Pipe Liquid mm 6 35 6 35 Gas mm 9 52 9 52 Additional Refrigerant R410A g m Chargeless Chargeless Standard m 5 5 Extensi...

Page 8: ...600 Power consumption Cooling w 1 750 Heating w 1 730 Operation current Cooling A 7 9 Heating A 7 9 Noise Cooling Heating Indoor In case of strongest air blow dBA 47 49 Outdoor In case of strongest air blow dBA 58 58 Refrigerant R 410A g 1 300 Connecting Pipe Liquid mm 6 35 Gas mm 12 7 Additional Refrigerant R410A g m 10 Standard m 5 Extension length Total m 30 Extension length Elevation m 20 Opti...

Page 9: ...ntrol 4301 000121 2 USER MANUAL INSTALLATION MANUAL DB68 06493A DB68 06494A 1 1 Remote Control Holder DB61 06087A 1 M4 x 16 Tapped Screws 6002 000234 2 CARD WARRNATY DB68 02596B 1 Insulation install out B62 05580V 1 Insulation install SVC DB62 05691C 1 Cable tie DB65 10088C 4 Drain Plug DB67 20011A 1 Essential Offer Outdoor Unit Rubber Leg DB67 01533A 4 INSTALLATION MANUAL DB68 06488A 1 ...

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: ...r unit No Parts Procedure Remark 1 Cabi Parts 1 Open the Panel Front ⓐ Remove the Clip Wire ⓑ 2 Release 4 screws on the Body Front ⓒ 3 Open the Body Front ⓒ by pulling from bottom of the part ⓐ ⓑ ⓒ ⓒ AC026MNJDKH AC035MNJDKH AC052MNJDKH ...

Page 12: ...Samsung Electronics 3 3 No Parts Procedure Remark 2 Electrical Parts 1 Open the cover of Control Boxⓓ 2 Pull the PBA out along the slide guide 3 Cut the Cable tie 4 Pull all wires out from the PBA ⓓ ...

Page 13: ...ure Remark 5 Release the 2 screws one is top of the C Box the other is left of it 6 Release 2 Hold Wires and pull all wires out from it 3 Blowing Evap Part 1 Pull the Bracket Pipe ⓔ out 2 Release 2 screws and pull Top Discharge Kit ⓕ out ⓔ ⓕ ...

Page 14: ... pull Bottom Discharge Kit ⓖ out 4 Disconect the Step Motor wire ⓗ from the conect wire This part is right side of the Bottom Discharge Kit ⓖ 5 Pull Bottom Discharge Kit ⓖ Out from the bottom of it 6 Release 3 screws and pull the Evap out from top to bottom direction ⓖ ⓗ ⓖ ...

Page 15: ...e 1 screw and pull the Bell Mouth ⓘ out 2 Release the Nut and pull Fan Turbo ⓙ out 3 Release 6 screw on the Body Back ⓚ Pull the Cap VIRUS DOCTOR ⓛ Bracket Wire ⓜ and Bracket Motor ⓝ out 4 Pull the VIRUS DOCTOR Kit ⓞ and Motor ⓟ out from the Body Back ⓚ ⓘ ⓙ ⓚ ⓛ ⓜ ⓝ ⓟ ⓚ ⓞ ...

Page 16: ... work You must turn off the Power before disassembly 1 loosen 1 pcs screw of cover control and detach it 2 loosen 5 pcs screws on both right and left cabniet side edges and to detach the cover top 3 Loosen 7 screwsfixed to disassemble cabi front and detach it CAUTION 3 2 Outdoor unit ...

Page 17: ...3 8 Samsung Electronics No Parts Procedure Remark common work 4 loosen 2 screws to disassemble steel bar 5 Loosen 2 screws to disassemble the cabi left and detach it ...

Page 18: ... 6 Loosen 7 screws to disassemble the cabi right and detach it 2 fan motor 1 loosen 1 screw as indication and detached the fan 2 loosen 4 pcs motor screws and disconnect the wire betwwen assy control out and motor 3 loosen 2 pcs bracket motor screw and detach it ...

Page 19: ... 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 Looosen fixing screw on both side 3 disaessembly the pipes in both inlet and outlet with welding torch 4 detach the heat exchanger ...

Page 20: ...sor 1 disconnect the compressor lead wire 2 disassembly the felt comp sound loosen the 3 bolts at the bottom CAUTION When removing the compressor Heat Exchanger and Pipe purge the Coolant inside the Compressor complete ly and remove the pipe with a welding flame ...

Page 21: ...rocedure Remark 1 common work You must turn off the Power before disassembly 1 Loosen 1 pcs screw of cover control 2 Loosen 8 pcs screw of the cabi top cover 3 Loosen 4 pcs screw of the bar steel 4 Loosen 10 pcs screw of the cabi side front CAUTION ...

Page 22: ...ung Electronics 3 13 No Parts Procedure Remark 1 common work 2 Fan motor 1 Loosen the fan screw according the indication and detach the fab propeller 2 Disconnect the wire between assy control out and motor ...

Page 23: ...ts Procedure Remark 2 3 Loosen 4 pcs motor screw 4 Loosen 2 pcs screw of bracket motor 3 Assy control out 1 Loosen the screws that connected partition and case control then get the control out 2 Loosen the screw of the cover termimal ...

Page 24: ...Samsung Electronics 3 15 No Parts Procedure Remark 3 3 Loosen 2 screws disassemble the Coil Harmonic 4 Loosen the screw of the cover terminal ...

Page 25: ... on both side 3 Disassemble the pipes in both inlet and outlet with welding torch 4 Detach the heat exchanger CAUTION When removing the compressor Heat Exchanger and Pipe purge the Coolant inside the Compressor complete ly and remove the pipe with a welding flame 5 Compressor 1 Loosen the 3 bolts at the bottom of com pressor ...

Page 26: ...mp buttons simultaneously insert the batteries into the remote control c Make sure that you are entered to the mode for setting the options 2 Set the option values CAUTION The total number of available options are 24 SEG1 to SEG24 Because SEG1 SEG7 SEG13 and SEG19 are the page options used by the previous remote control models the modes to set values for these options are skipped automatically Set...

Page 27: ...G4 value by pressing the Low Fan button repeatedly until the value you want to set appears on the remote control display SEG4 b Set the SEG5 value by pressing the High Fan button repeatedly until the value you want to set appears on the remote control display When you press the Low Fan or High Fan button values appear in the following order SEG5 4 Press the Mode button Dry and On appear on the rem...

Page 28: ... 8 Press the Mode button Heat and On appear on the remote control display 9 Set the SEG11 and SEG12 values a Set the SEG11 value by pressing the Low Fan button repeatedly until the value you want to set appears on the remote control display SEG11 b Set the SEG12 value by pressing the High Fan button repeatedly until the value you want to set appears on the remote control display When you press the...

Page 29: ...e by pressing the High Fan button repeatedly until the value you want to set appears on the remote control display When you press the Low Fan or High Fan button values appear in the following order SEG17 3 Press the Mode button Dry and Off appear on the remote control display 4 Set the SEG18 and SEG20 values a Set the SEG18 value by pressing the Low Fan button repeatedly until the value you want t...

Page 30: ...l display SEG23 b Set the SEG24 value by pressing the High Fan button repeatedly until the value you want to set appears on the remote control display When you press the Low Fan or High Fan button values appear in the following order SEG24 3 Check whether the option values that you have set are correct by pressing the Mode button repeatedly SEG21 SEG22 SEG23 SEG24 SEG24 SEG24 SEG2 SEG3 SEG4 SEG5 S...

Page 31: ...ntrol according to your air conditioning system plan by referring to the following table and by following the steps in Common steps for setting the addresses and options on page The indoor unit addresses main and RMC addresses are set to 0A0000 100000 200000 300000 by default If indoor units and outdoor units match 1 1 you don t need to set the main address because it is automatically set by the o...

Page 32: ...ude a power supply F1 1 L 2 M F2 V1 V2 F3 F4 Indoor Unit 2 Set the installation options of indoor units by referring to the following table and by following the steps in Common steps for setting the addresses and options on page The installation options of indoor units are set to 020000 100000 200000 300000 by default The SEG20 option Individual control with remote control allows you to control mu...

Page 33: ... Indication Details Indication Details 2 0 Disuse Slave disable Level control 0 Thermo on 0 Disuse 0 Use of buzzer 2 1000 hours 1 On Off control 2 Off control 3 Window on off control 4 Disuse Master enable Level control 1 Operation on 1 Use 1 Disuse of buzzer 6 2000 hours 5 On Off control 6 Off control 7 Window on off control Option SEG19 SEG20 SEG21 SEG22 SEG23 SEG24 Function Page Individual cont...

Page 34: ...rnal control Level control Indoor 1 Indoor 2 Indoor 3 Indoor 4 Default Not set 0 Slave All Disuse Use 4 Not set 0 Not set 0 Not set 0 Master Indoor 1 Slave Indoor 2 3 4 Use Indoor 3 Disuse Not set 0 Not set 0 1 3 Not set 0 Slave All Use Indoor 4 Use Not set 0 Not set 0 Not set 0 5 7 Master Indoor 4 Slave Indoor 1 2 3 4 1 4 Changing the addresses and options individually When you want to change the...

Page 35: ... connected 4 Communication error between the outdoor unit Main Inverter Micom After 1 minute of Main Inverter detection X X X 1 Indoor unit error Display is unrelated with operation 2 Outdoor unit error Display is unrelated with operation Communication error between indoor units X X Self diagnosis Power voltage detection between indoor and outdoor unit communication cable Self diagnosis Outdoor un...

Page 36: ...2 Three digits Two digits One digit Hz 3 Number of indoor heat exchangers 3 Three digits Two digits One digit Hz 4 Out sensor 4 Two digits One digit First decimal C 5 Discharge sensor 5 Two digits One digit First decimal C 6 OLP sensor 6 Two digits One digit First decimal C 7 Cond sensor 7 Two digits One digit First decimal C 8 Current 8 Two digits One digit First decimal C 9 Fan RPM 9 Three digit...

Page 37: ...msung Electronics 4 2 3 ECO mode Power save Mode Display ECO mode lamp Segment 1 Segment 2 Segment 3 Segment 4 RED color ECO mode BLANK BLANK BLANK BLANK On Exit ECO mode Press K3 to exit Off ECO mode lamp RED ...

Page 38: ...oor unit and outdoor unit When there is no response from indoor units after tracking is completed Check electrical connection and setting between indoor unit and outdoor unit 10 E203 Communication error between the outdoor unit and main micom For PF 4 to 6 controllers error will be determined from the time when the compressor is turned on Check electrical connection and setting between indoor unit...

Page 39: ...EPROM Read Write error Option Check Outdoor EEPROM Data 33 E471 Outdoor unit EEPROM Read Write error H W Check Outdoor EEPROM PBA 34 E472 AC Line Zero Cross Signal out 35 E473 Comp Lock error 36 E474 Error on IPM Heat Sink sensor of inverter 1 Short or Open Check Outdoor Inverter PBA 37 E475 Error on inverter fan 2 FAN2 ERROR 38 E484 PFC Overload Over current Error Check Outdoor Inverter PBA 39 E4...

Page 40: ...unication error 1 min Check the communication connection between indoor and outdoor units Check the power line and communication cable connection status Operation Off Communication error Communication error between indoor outdoor INV MAIN MICOM 1 min Check MAIN MICOM Check INVERTER MICOM Communication error Outdoor temperature sensor error Check sensor connection status Check sensor location Check...

Page 41: ... Outdoor unit protection control error AC ZERO CROSSING SIGNAL OUT error Check the input power status Operation Off Outdoor unit protection control error Compressor LOCK error Check the compressor connection status Check the resistance between difference phases of the compressor Operation Off Outdoor unit protection control error Outdoor fan 2 error Check the input power connection status Check th...

Page 42: ...resistance value deviate from the temp table beside Yes Is indoor temp sensor connector disconnected Resume operation after replacing PCB Resume operation after connecting to the connector PCB Indoor temp sensor self defect replacement Disconnect the PCB from the connector of the internal temp sensor and then measure the resistance between the two terminals ex Room temperature 26 C resistance 09 2...

Page 43: ...te from the temperature table beside Yes Is indoor Heat Exchange temp sensor connector disconnected Resume operation after replacing PCB Resume operation after connecting to the connector PCB Indoor Heat Exchange temp sensor self defect replacement Disconnect the PCB from the connector of the internal temp sensor and then measure the resistance between the two terminals ex Room temperature 24 C re...

Page 44: ... excessive high speed Cause of problem Check for motor connector disconnect check motor fan fastening Yes No No Is there any clogging binding of foreign substances in the MotorFan Yes Is Motor connector disconnected from the PCB Resume operation after replacing PCB Resume operation after connecting to the connector PCB Resume operation after removing the foreign substances ...

Page 45: ...king out the communication line At this time the voltage between lines is a square wave that is above DC 0 7V as shown in the picture below 0 7V 0 7V After removing the communication line that links outdoor to indoor units measure 2 lines of the outdoor unit with scope After reconnecting the communication line that links outdoor and indoor units remove communication connector in the indoor PCB If ...

Page 46: ... operation after repairing it according to P8 2 circuit diagram s EEPROM part P6 6 10 component list If problem occurs during re operation replace PCB 4 3 5 EEPROM circuit part defect Indoor unit display Operation X Defrost Reservation Fan X Filter Criteria EEPROM circuit part defect Cause of problem EEPROM component defect necessary component missing in EEPROM circuit part damage soldering ...

Page 47: ...n counter after connecting to the connector PCB Indoor unit display VIRUS DOCTOR X Fan X Reservation X Defrost X Operation Criteria VIRUS DOCTOR non operation Cause of problem Check for VIRUS DOCTOR connector disconnect On Flickering X Off The number of measured Ion is more than 100 000 Change the VIRUS DOCTOR Kit it s out of the work Normal operation Yes VIRUS DOCTOR Kit Tester ITC201A ...

Page 48: ...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 49: ...4 22 Samsung Electronics 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 50: ...tart 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 outdoor unit PBA ...

Page 51: ...oubleshooting procedure PF2 Yes Reconnect 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 B...

Page 52: ...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 53: ...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 54: ...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 55: ...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 56: ...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 57: ...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 58: ...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 59: ...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 60: ...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 61: ... 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 62: ...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 63: ...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 64: ...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 65: ...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 66: ...2 Is the gap PBA heatsink 3 Is the fan operation normal 4 Is the cover assembly in conrol 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 67: ...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 68: ...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 69: ...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 70: ...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 71: ...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 72: ...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 73: ... message pop up Set seg23 to 1 8 digit Replace wire of MDS Connect wire of MDS Replace MDS Kit Replace Main PBA Start End Yes Yes Yes Yes Yes MDS Function only can be set in wired remote controller or central controller Error Message Error message will be appeared after 3minutes Wired remote controller E143 message is pop up Display Panel Operation filter LED is blinking at the same time after ind...

Page 74: ...Samsung Electronics 4 47 ...

Page 75: ...D 10 VCC DC 5V 1 DC 12V 2 5 Control SIGNAL 1 Communication Signal F1 2 Communication Signal F2 1 DC 12V 2 5 Communication Signal 1 Communication Signal F1 2 Communication Signal F2 For Developer Not for field 7pin Downloader For Developer Not for field 10pin Downloader CN70 GND CN82 DAMPERMOTOR CN100 AC Power Inpu CN31 COM1Communication Indoor OutdoorCommunication CN75 VENTILATOR Output CN84 LOUVE...

Page 76: ...DC connecting connector 1 2 3 4 5 DISPLAY LED Control 6 TOUCH S W Reset DC 5V 7 TOUCH S W Out DC 5V 8 REMOCON SIGNAL Receive 9 GND 10 VCC DC 5V CN01 PANEL DISPLAY 1 5 1 3 DAMPER PBA DC connecting connector 1 DC 5V 2 GND CN01 DAMPER S W 1 ...

Page 77: ...96 06V WHT 5 COMM YW396 02V RED 6 SUB PBA POWER SMW200 05P BLK 7 EEV1 SMW250 05 RED 8 COMP DBT061 3P WHT 9 SMPS SMW250 03 BLU 10 EEPROM B7P MQ WHT 11 TEMP SENSOR SMW200 08P WHT 12 MAIN DOWNLOAD YDW200 20 BLK 13 SUB PBA SMW200 10P BLK 14 DRED SMW250 05 WHT 15 INV DOWNDOWN YDAW200 20TR BLK 16 SUB PBA SMW200 10P WHT 17 ENABLE CGND SMW250 03 RED 1 3 5 6 8 10 12 13 15 2 4 7 9 11 14 16 17 ...

Page 78: ...5 4 Samsung Electronics 5 2 2 MAIN PCB AC052MXADKH 5 4 3 2 1 7 6 8 9 10 11 12 ...

Page 79: ...GE THERMISTOR 5 6 COND THERMISTOR 1 10 Download 1 DV310V 3 GND 4 DC15V 5 FAN_PWM 6 FAN_Feedback 1 10 Download 1 COMP U Phase 2 COMP V Phase 3 COMP W Phase 1 2 Reactor CN030 4WAY VALVE CN951 SIGNALTOSUBPCB CN252 THERMISTOR CN851 S NET Communication CN701 EEV CN901 BLDC MOTOR CN302 Communication COM1 CN551 Downloader CN251 THERMISTOR CN451 COMP POWER CN201 Downloader CN051 Reactor ...

Page 80: ...5 6 Samsung Electronics 5 2 3 SUB PCB AC052MXADKH 1 2 1 DC12V 2 GND 1 28 SIGNAL TO MAIN PCB CN12 DC12V CN951 SIGNALTOMAINPCB ...

Page 81: ...Samsung Electronics 6 1 6 Wiring Diagram 6 1 Indoor Unit This Document can not be used without Samsung s authorization ...

Page 82: ...6 2 Samsung Electronics 6 2 Outdoor Unit AC026MXADKH AC035MXADKH This Document can not be used without Samsung s authorization ...

Page 83: ...Samsung Electronics 6 3 AC052MXADKH AC071MXADKH This Document can not be used without Samsung s authorization ...

Page 84: ...opicalTemp B Non Inv Side GeneralTemp N Non Inv Side LowTemp R Non Inv Side TropicalTemp Z Non Inv Top TropicalTemp U UNITED STATUS DUCT K DVM PLUS4 V DVM Inverter L DVM SLIM G DVM GHP M DVM MINI W DVMWATER 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...

Page 85: ...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 86: ...utdoor C 5 0 10 0 15 0 20 0 0 0 5 0 10 0 15 0 20 0 20 10 0 10 20 30 40 50 32 2 3 27 1 32 23 27 19 21 15 Outdoor Temp C WaitingMode Pressure kgf cm G S Waiting Mode 32 23 27 19 21 15 50 18 5 16 7 15 9 35 15 7 14 7 13 4 20 15 2 14 3 13 6 7 9 1 9 1 9 1 5 5 6 5 6 5 6 20 3 0 3 0 3 0 Indoor C Outdoor C 15 0 20 0 25 0 30 0 35 0 20 10 0 10 20 32 2 3 27 1 28 18 27 19 20 15 Outdoor Temp C Heating Pressure k...

Page 87: ...onics This Service Manual 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 ...

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