Samsung NS071LDXEA Page 1 Service Manual Download

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SYSTEM AIR CONDITIONER

Basic :

NS070LHXEA&UH070EAV2

DH070EAV1&UH070EAV2

Model :
NS035LDXEA RC035DHXEA
NS052LDXEA RC052DHXEA
NS071LDXEA RC071DHXEA
NS052SDXEA RC052DHXEA
NS071SDXEA RC071DHXEA
Model Code :
NS035LDXEA RC035DHXEA
NS052LDXEA RC052DHXEA
NS071LDXEA RC071DHXEA
NS052SDXEA RC052DHXEA
NS071SDXEA RC071DHXEA

AIR CONDITIONER

CONTENTS

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

1. Precautions

2. Product Specifications

3. Disassembly and Reassembly

4. Troubleshooting

5. PCB Diagram and Parts List

6. Wiring Diagram

7. Schematic Diagram

8. Reference Sheet

RC071DHXEA

NS035/052/071LDXEA

NS052/071SDXEA

RC035/052DHXEA

Summary of Contents for NS071LDXEA

Page 1: ...52LDXEA RC052DHXEA NS071LDXEA RC071DHXEA NS052SDXEA RC052DHXEA NS071SDXEA RC071DHXEA AIR CONDITIONER CONTENTS Refer to the service manual in the GSPN see the rear cover for the more information 1 Precautions 2 Product Specifications 3 Disassembly and Reassembly 4 Troubleshooting 5 PCB Diagram and Parts List 6 Wiring Diagram 7 Schematic Diagram 8 Reference Sheet RC071DHXEA NS035 052 071LDXEA NS052 ...

Page 2: ...ly 3 1 3 1 Indoor Unit 3 2 3 2 Outdoor Unit 3 14 4 Trouble shooting 4 1 4 1 Indoor Display Error and Check Method 4 1 4 2 Outdoor LED Error Display and Check Method 4 4 4 3 Setting Option Setup Method 4 5 4 4 Items to be checked first 4 24 4 5 Fault Diagnosis by Symptom 4 25 4 6 PCB Inspection Method 4 41 4 7 Main Part Inspection Method 4 43 5 PCB Diagram and Parts list 5 1 6 1 Indoor Unit 5 1 6 2...

Page 3: ...ed by an incorrect installation When installing the built in type air conditioner keep all electric cables such as the power cable and the connection cord in pipes ducts or cable channels to protect them from the danger of impact or any other incidents 1 2 Power supply and circuit breaker O If the power cord of the air conditioner is damaged it must be replaced by the manu facturer or a qualified ...

Page 4: ...o ISO standard for energy efficiency 1 3 During operation O Do not repair the air conditioner at your discretion It is recommended to contact a service center directly O Never spill any kind of liquid on the air conditioner If this happens turn off the air conditioner and contact an authorized service cen ter O Do not insert anything between the airflow blades to prevent damage of the inner fan an...

Page 5: ...LDC inverter technology it makes a room cool with highly energy saving and arises the efficiency of air conditioner Q Long Piping Length Height It can give the benefit to the installers and aries the reliability of the air conditioner Q Long Ambient Operation In Low Temperature It can arise the reliability and the capacity of the air conditioner especially operated in low temperature Q Eco friendl...

Page 6: ...6 Power Factor Cooling 70 90 90 Heating 70 90 90 Size Outer Dimension WidthxHeightxDepth mm 900 199 600 790 548 285 inch Weight Net kg 26 33 Compressor Model G4C090LUDJR Motor Type Single BLDC Rated Output Oil Type 320cc POE Blower Type Blower Propeller Motor Type SSR BLDC Rated Output W Piping Pipe O D Size Liquid mm inch xL m 6 35 1 4 x5 Gas mm inch xL m 9 53 3 8 x5 Connection Method Flare Betwe...

Page 7: ...Heating 95 97 95 Size Outer Dimension WidthxHeightxDepth mm 1100 199 600 790 548 285 inch Weight Net kg 31 38 5 Compressor Model UG4T150FUDJQ Motor Type Twin BLDC Rated Output Oil Type 650cc POE Blower Type Blower Propeller Motor Type SSR BLDC Rated Output W Piping Pipe O D Size Liquid mm inch xL m 6 35 1 4 x5 Gas mm inch xL m 12 7 1 2 x5 Connection Method Flare Between Height m Max 20 Pipe Length...

Page 8: ... 4 97 76 Heating 92 1 97 5 97 3 Size Outer Dimension WidthxHeightxDepth mm 1100 600 199 880X310X798 inch Weight Net kg 32 54 5 Compressor Model UG4T200FUAE4 Motor Type Twin BLDC Rated Output 8 0μF 450V Oil Type 650cc POE Blower Type Blower Propeller Motor Type SSR BLDC Rated Output W 30 40 Piping Pipe O D Size Liquid mm inch xL m 6 35 1 4 x5 Gas mm inch xL m 15 88 5 8 x5 Connection Method Flare Be...

Page 9: ...eating 95 97 95 Size Outer Dimension WidthxHeightxDepth mm 900 260 480 790 548 285 inch Weight Net kg 29 5 38 5 Compressor Model UG4T150FUDJQ Motor Type TWIN BLDC Rated Output Oil Type 650cc POE Blower Type Blower Propeller Motor Type SSR BLDC Rated Output W Piping Pipe O D Size Liquid mm inch xL m 6 35 1 4 x5 Gas mm inch xL m 12 7 1 2 x5 Connection Method Flare Between Height m Max 20 Pipe Length...

Page 10: ... 2 97 97 3 Heating 90 3 97 2 97 6 Size Outer Dimension WidthxHeightxDepth mm 1150 480 260 880X310X798 inch Weight Net kg 33 54 5 Compressor Model UG4T200FUAE4 Motor Type TWIN BLDC Rated Output 8 0μF 450V Oil Type 650cc POE Blower Type Blower Propeller Motor Type SSR BLDC Rated Output W 30 40 Piping Pipe O D Size Liquid mm inch xL m 6 35 1 4 x5 Gas mm inch xL m 15 88 5 8 x5 Connection Method Flare ...

Page 11: ...RC035DHXEA NS035LHXEA UH035EAV1 Basic Design Indoor Unit Outdoor Unit Net Weight Indoor Unit 26 0kg 22 0kg Outdoor Unit 33 0kg 50 0kg Outer Dimension WxHtxD Indoor Unit 990x199x600mm 990x199x600mm Outdoor Unit 790x548x285mm 790x548x285mm Noise Indoor Unit 40dB 40dB Outdoor Unit 53dB 53dB ...

Page 12: ...door Unit Outdoor Unit Net Weight Indoor Unit 26 0kg 26 0kg Outdoor Unit 33 0kg 50 0kg Outer Dimension WxHtxD Indoor Unit 990x199x600mm 990x199x600mm Outdoor Unit 790x548x285mm 790x548x285mm Noise Indoor Unit 42dB 42dB Outdoor Unit 58dB 58dB The Comparative Specifications of Product cont ...

Page 13: ...oor Unit Outdoor Unit Net Weight Indoor Unit 32 0kg 32 0kg Outdoor Unit 54 5kg 54 5kg Outer Dimension WxHtxD Indoor Unit 1100x600x199mm 1100x600x199mm Outdoor Unit 880x310x798mm 880x310x798mm Noise Indoor Unit 44dB 44dB Outdoor Unit 60dB 60dB The Comparative Specifications of Product cont ...

Page 14: ...door Unit Outdoor Unit Net Weight Indoor Unit 29 5kg 29 5kg Outdoor Unit 38 5kg 38 5kg Outer Dimension WxHtxD Indoor Unit 900 260 480 mm 900 260 480mm Outdoor Unit 790x548x285mm 790x548x285mm Noise Indoor Unit 45dB 45dB Outdoor Unit 58dB 58dB The Comparative Specifications of Product cont ...

Page 15: ...oor Unit Outdoor Unit Net Weight Indoor Unit 33 0kg 33 0kg Outdoor Unit 54 5kg 54 5kg Outer Dimension WxHtxD Indoor Unit 1150 480 260mm 1150 480 260mm Outdoor Unit 880 310 798mm 880 310 798mm Noise Indoor Unit 45dB 45dB Outdoor Unit 60dB 60dB The Comparative Specifications of Product cont ...

Page 16: ...OWNER S INSTRUCTIONS MANUAL DE INSTRUCCIONES ISTRUZIONI PER L USO MANUAL DE INSTRU ÍES MANUEL D UTILISATION GEBRAUCHSANWEISUNG Splut type Room Air Conditioner Aire acondicionado domĿstico sistema Split Condizionatore d aria per ambienti ad unitˆ Separate Aparelho de ar condicionado tipo Split Climatiseur de type sĿparĿ Geteilte raumklimaanlage OWNER S INSTRUCTIONS MANUAL DE INSTRUCCIONES ISTRUZION...

Page 17: ...Samsung Electronics 3 1 3 Disassembly and Reassembly Necessary Tools Item Remark SCREW DRIVER MONKEY SPANNER ...

Page 18: ...the air conditioner and remove the power cord before repairing the unit NS035 052 071LDXEA No Parts Procedure Remark 1 Filter 1 Pull out the Filter as picture 1 or picture 2 2 If it is necessary after disassembling 8 indicating screws detach the Bracket Filter ...

Page 19: ... the set the procedure of disassembling the Filter is just as the above 2 Blower Motor 1 After disassembling 13 indicating screws detach Ass y Cabinet Top Motor 2 After disassembling 3 indicating screws detach Ass y Case Blower Upper Press the pothook of the Case Blower and detach Ass y Case Blower Upper ...

Page 20: ...sembling 2 indicating screws detach the Cover Control 4 Detach the Motor Wire Connected to PCB and Capacitor 5 After disassembling the indicating screws detach the wire connected to the Partition 6 After disassembling 2 indicating screws detach the Ass y Band Motor ...

Page 21: ... the Motor and Blowers detach the Blowers from the axis of the Motor by 3mm inner hexagon spanner 3 Drain Pan 1 After disassembling 15 indicating screws detach Ass y Cabinet Top Evap 2 After disassembling 6 indicating screws detach the Bracket Outlet 3 Detach the Drain Pan ...

Page 22: ...above detach the Evaporator 1 After disassembling 2 indicating screws detach Ass y Cover Pipe 2 Detach the Sensor from the Control Box including 2 Sensors 3 After disassembling 2 indicating screws detach Ass y Support Evap LF 4 After disassembling 2 indicating screws detach Ass y Support Evap RH ...

Page 23: ...ling the Cover Control 1 Detach all the wires connected to the PCB 2 If only the disassembly of PCB required press the Pothook and detach the PCB from the set 3 If only the disassembly of Capacitor is required detach it from the set 4 If only the disassembly of Case Control is required detach it from the set after disassembling 2 indicating screws ...

Page 24: ...rts Procedure Remark 5 Detach the Transformer after disassembling 2 indicating screws 7 Work is possible after disassembling the Case PCB 6 Ass y Bracket Outlet 1 After disassembling 16 indicating screws detach Ass y Bracket Outlet ...

Page 25: ...lower Motor 1 After disassembling 16 places indicating screws detach Ass y Cabi Bottom Blower 2 Detach from Ass y Control In the capacitor connection wire between the Motor Fan and housing connector 3 After disassembling 2 places indicating screws detach the 2 Fan Case ...

Page 26: ...cedure Remark 2 Control In 4 After disassembling 2 places indicating screws detach Fan Motor and Blower from the set 1 After disassembling 1 Indicating screw detach the Cover control 2 Detach the Motor Fan and Sensor Connector from the PCB ...

Page 27: ...s Procedure Remark 3 Drain Pan 3 Disassemble 4 indicating screws and detach Control In from the set Work is possible when Disassembling the Ass y Cabi Bottom Blower 1 Disassemble 7 indicating screws and detach Ass y Cabi Bottom Drain ...

Page 28: ...ts Procedure Remark 4 Evap 2 Disassemble 4 indicating screws and detach the Drain Pan 2 screws each at left and right side Work is possible when Disassembling the Ass y Drain Pan 1 Disassemble 5 indicating screws to detach Cover Pipe ...

Page 29: ...onics 3 13 No Parts Procedure Remark 2 Disassemble Sensor on the Evap 3 Disassemble 4 indicating screws which are in the near of Hanger Plate to detach the Evap 2 screws each at left and right side It needs 2 peoples ...

Page 30: ... Electronics 3 2 Outdoor Unit RC071DHXEA No Parts Procedure Remark 1 Common Work 1 Loosen 1 fixing screw of the Cover Control and detach the Cover Control 2 Loosen each 7 fixing screws and detach the Cabinet Upper ...

Page 31: ...lectronics 3 15 No Parts Procedure Remark 3 Loosen 2 screws fixed to assemble Control Box with Cabinet Side RH 4 Loosen fixing screws and detach the Cabinet Side RH 5 Loosen 2 screws fixed on the Guide Condenser ...

Page 32: ...3 16 Samsung Electronics No Parts Procedure Remark 6 Loosen fixing screws of the Cabinet Front ...

Page 33: ...s from the PCB of ASS Y Control Out 3 Pull up the ASS Y Control Out 4 Heat Exchanger 1 Release the refrigerant at first 2 Loosen fixing screw on both sides 3 Disassemble the pipes in both inlet and outlet with welding torch 4 Detach the Heat Exchanger 5 Loosen 4 bolts fixed to assemble Valve Service with Bracket Valve like the picture on the right side ...

Page 34: ...Flange like the picture on the right side Turn counter clockwise because the screw is right handed 2 Detach the Fan Propeller 3 Loosen 4 fixing screws to detach the Motor 4 Disconnect the wire between ASS Y Control Out and Motor 5 Loosen 2 fixing bolts and detach the Bracket Motor ...

Page 35: ...9 No Parts Procedure Remark 5 Compressor 1 Loosen the fixing nut and detach the Compressor Lead Wire 2 Disassemble the Felt Compressor Sound 3 Loosen the 3 bolts at the bottom of Compressor like the picture on the right side ...

Page 36: ...52DHXEA No Parts 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 cabniet side edges and to detach the cover top 3 Loosen 7 screwsfixed to disassemble cabi front and detach it ...

Page 37: ...ung Electronics 3 21 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 38: ... 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 betwwen assy control out and motor 3 loosen 2 pcs bracket motor screw and detach it ...

Page 39: ... 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 40: ...3 24 Samsung Electronics 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 ...

Page 41: ...e sensor X X X 1 No communication for 2 minutes between indoor units Communication error for more than 2 minutes 2 Indoor unit receiving the communication error from outdoor unit 3 Outdoor unit tracking 3 minutes error 4 When sending the communication error from the outdoor unit the mismatching of the communication numbers and installed numbers after completion of tracking 4 Communication error fo...

Page 42: ...Compressor Discharge Temp sensor Error Open Short Error Power cable miss connection error Indoor Float Switch 2nd Detection Self Diagnosys Error Outdoor unit indoor unit communication wire miss connection Connected to Power terminal Outdoor unit refrigerant Full leakage Gas leak Outdoor Fan 1 Error Outdoor Fan 2 Error Discharge over temperature Outdoor Unit Protetion Control Error Inverter Compres...

Page 43: ...rotetion Control Error Outdoor unit Capacity Setup option error Communication error between Indoor unit and wired remote control Wired remote control error Communication error between Master and Slave wired remote control COM1 COM2 Cross installed error Error of setting option for wired remote control COM2 ...

Page 44: ...door air tem perature is over 30 C Heating E441 Cooling operation is not available since the outdoor air tem perature 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 Trip error 15 E463 Over current trip PFC over current error Check OLP sensor 16 E464 IPM IGBT Module Over Current O C 17 E465 Comp...

Page 45: ...ush the button to set the display panel to Every time you push the button the display panel reads repeatedly Push the button to set the display panel to Every time you push the button the display panel reads repeatedly 4 3 Setting Option Setup Method Option No Step 1 Enter the Option Setup mode 1st Take out the batteries of remote control 2nd Press the temperature button simultaneously and insert ...

Page 46: ...play part to and check the display part The display part shows Press the Mode Selection key to set the display part to and check the display part The display part shows Step 4 Pressing the ON OFF button When pressing the operation ON OFF key with the direction of remote control for unit the sound Ding or Diriring is heard and the OPERATION ICON lamp of the display is flickering at the same time th...

Page 47: ...wn in the right then go to the step 2 K Step 2 Method If the first digit of remote controller shows 0 go to the step 3 t G JU TIPXT QSFTT UIF PEF CVUUPO POF UJNF to change it into 0 and then go to step 3 K Step 3 Method Input the second digit of option code by pressing the High Temp button example 021E311422852A311439421F Result If 2 is displayed go to the step 4 whenever pressing the button 1 9 A...

Page 48: ...E311422852A311439421F Result If 1 is displayed go to the step 5 K Step 5 Method Input the fourth digit of option code by pressing the High Fan button example 021E311422852A311439421F Result If E displays go to step 6 K Step 6 Method Input the fifth digit of option code by pressing the On Timer button example 021E311422852A311439421F Result If 3 displays go to step 7 SEG5 ...

Page 49: ...p 8 K Step 8 Method After completion up to step 7 pressing Mode button 1 7 steps are saved internally If the first number is 1 at the time it is correct So go to step 9 t G XBOUJOH UP TFF UIF TDSFFO of 2 7 steps press the mode button repeatedly to make the first digit 0 KStep 9 Method Input the eighth digit by pressing the High Temp button example 021E311422852A311439421F Result If 4 displays go t...

Page 50: ...ton example 021E311422852A311439421F Result If 2 displays go to step 11 KStep 11 Method Input the tenth digit by pressing the High Fan button example 021E311422852A311439421F Result If 2 displays go to step 12 KStep 12 Method Input the 11st digit by pressing the On Timer button example 021E311422852A311439421F Result If 8 displays go to step 13 ...

Page 51: ...ror If the On Off Timer and Fan indicator is flickering the wrong option code is input Put off the power of indoor unit and turn it on again and then input the option code again If the same error occurs it is the EEPROM is defective or not inserted Replace the PCB If all of On Off Timer Fan and Filter Sign indicator are flickering along with the Tiriring sound there is option code already input wh...

Page 52: ...on example 021E311422852A311439421F Result If A displays go to step 16 K Step 16 Method Input the 15th digit by pressing the Low Temp button example 021E311422852A311439421F Result If 3 displays go to step 17 K Step 17 Method Input the 16th digit by pressing the High Fan button example 021E311422852A311439421F Result If 1 displays go to step 18 ...

Page 53: ... Y Step 19 Method Input the 18th digit by pressing the Cancel button example 021E311422852A311439421F Result If 4 displays go to step 20 K Step 20 Method After completion up to step 20 pressing Mode button Previous steps are saved internally If the first number is 3 of the time it is correct so go to step 22 t G XBOUJOH UP TFF QSFWJPVT TDSFFO QSFTT UIF mode button repeatedly to make the first digi...

Page 54: ...on example 021E311422852A311439421F Result If 9 displays go to step 22 K Step 22 Method Input the 21th digit by pressing the Low Temp button example 021E311422852A311439421F Result If 4 displays go to step 23 Y Step 23 Method Input the 22th digit by pressing the High Fan button example 021E311422852A311439421F Result If 2 displays go to step 24 ...

Page 55: ...F problem with reference to the right side Error If the On Off Timer and Fan indicator is flickering the wrong option code is input Put off the power of indoor unit and turn it on again and then input the option code again If the same error occurs it is the EEPROM is defective or not inserted Replace the PCB If all of On Off Timer Fan and Filter Sign indicator are flickering along with the Tiririn...

Page 56: ... and turn it on again and then input the option code again If the same error occurs it is the EEPROM is defective or not inserted Replace the PCB If all of On Off Timer Fan and Filter Sign indicator are flickering along with the Tiriring sound there is option code already input which are different from the current ones Check the option code and press the button again if correct Option code will be...

Page 57: ...nly 12 digit option setting is available Please refer to the wired remocon installation manual for setting with the wired remocon Step 1 Entering mode to set option 1 Remove batteries from the remote controller 2 Insert batteries and enter the option setting mode while pressing HighTemp button and LowTemp button 3 Check if you have entered the option setting status Step 2 The procedure of option s...

Page 58: ...alue Each time you press 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...

Page 59: ...me you press the button 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 ...

Page 60: ...g will be maintained 4 3 3 3 Setting an indoor unit address MAIN RMC t 8IFO i w_w w JT FOUFSFE UP 4 _ UIF JOEPPS VOJU 3 44 JT OPU DIBOHFE t G ZPV TFU UIF 4 BT UIF JOEPPS VOJU XJMM NBJOUBJO UIF QSFWJPVT 3 44 FWFO JG ZPV JOQVU UIF PQUJPO WBMVF PG 4 t G ZPV TFU UIF 4 BT UIF JOEPPS VOJU XJMM NBJOUBJO QSFWJPVT 3 3 44 FWFO JG ZPV JOQVU UIF PQUJPO WBMVF PG 4 _ Option No 0AXXXX 1XXXXX 2XXXXX 3XXXXX Option...

Page 61: ...conditionofeachinstallationlocation Option No 02XXXX 1XXXXX 2XXXXX 3XXXXX Option SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 Explanation PAGE MODE RESERVED Useofexternal temperaturesensor Use of central control RPM setting compensation Indication and Details Indication Details Indication Details Indication Details Indication Details 0 Notused 1 Highceilingmode 2 Highceilingkit 3 Lownoiseoperation mode 0 2 0 Dis...

Page 62: ...EG12 1 0 0 SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 2 1 0 0 6 SEG19 SEG20 SEG21 SEG22 SEG23 SEG24 3 0 assign option codes except SEG 1 7 13 19 which are page options You can change each digit of set option Option SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 Explanation PAGE MODE The option mode you want to change Thetens digitofan optionSEGyouwill change The unit digit of an option SEG you will change Thechangedvalue...

Page 63: ...hrenheit Sound mute Mixed operation control 1 2 4 7 Ex 044217 1d00e6 200000 300000 When using Sound mute 044217 1d00e6 200002 300000 When using high ceiling kit for 4way and mixed operation error preventing function 044217 1d00e6 200014 300000 Model Option Code NS052SDXEA 011014 1963A2 27343C 370010 020000 100000 200000 300000 03443D 103F44 2443D3 3F4400 NS071SDXEA 014077 1660C8 274750 370000 NS03...

Page 64: ...y of 3 minutes when the compressor is reoperated The same phenomenon occurs when a power is on As a phenomenon that the compressor is reoperated after a delay of 3 minutes the indoor fan is adjusted automatically with reference to a temperature of the air blew 2 Compressor stops operation intermittently in DRY mode Compressor operation is controlled automatically in DRY mode depending on the room ...

Page 65: ... Check Inner wiring of outdoor unit Abnormal Check outdoor unit terminal block voltage on L N for indoor unit 230Vac nominal Check cable and connection of wire between indoor and outdoor unit Abnormal Check indoor unit terminal block voltage on L N 230Vac nominal Check Indoor control PCB Transformer and FUSE on PCB and replace one which is broken Abnormal Check indoor unit terminal block voltage o...

Page 66: ...R PCB Check and correct the wire or socket connection Check Fuses listed blow FUSE3 EMI PCB FUSE MAIN PCB No Is there miss connection of power and communication wire between indoor and outdoor Correct the cable wiring between indoor and outdoor Check F1 F2 communication line wiring CN50 MAIN PCB Check and correct the wiring Replace the FUSE Replace INVERTER PCB Also check each BLDC FAN moto short ...

Page 67: ...r case broken No Take off each Fan motor housing after 1 minutes from turning off the power Follow the check procedure of outdoor unit power supply error check No Is each resistance of FAN cable housing pin 1 3 over 1Mohm pin 4 3 5 3 and 6 3 over 1Kohm on each FAN motor Mount each Fan housing to PCB socket and turn on the power Exchange INVERTER PCB No Is the Pin voltage 1 3 of CN40 and 41 over 25...

Page 68: ...f outdoor unit Outdoor unit cover Fan front obstruction etc 7 Is there no ventilation obstruction at the surrounding of indoor unit Overload condition in heating mode 2 Troubleshooting procedure No Yes Yes Are the service valves full opened Yes Yes Check AC power source No No Reinstall and remove the obstruction Is the installation of outdoor unit good Reinstall and remove the obstruction No Is th...

Page 69: ...ompressor in 3 minutes off Check the resistance value of 4 WAY valve coil Go to the next page 4 WAY valve main body error Attach the sensor correctly Over shortage of the refrigerant Connect the connecter correctly 4 WAY valve coil error Exchange the outdoor PCB No Yes Yes Yes OK Yes No No No NG No Is much frost in the indoor heat exchanger Does the 4 WAY valve operate normally Is the outdoor air ...

Page 70: ...ted correctly Dose the voltage of DC300V apply to the connector of outdoor fan during the operation of outdoor unit The over shortage of refrigerant Insufficient Capacity Load estimation error Connect the connector Outdoor fan error Check the motor wire Exchange the out PCB EEV coil error Connect the connector Is much frost in the heat exchanger Is much frost in the heat exchanger Outdoor PCB erro...

Page 71: ...he resistance value of sensor connection pull_up correct 2 Troubleshooting procedure Is the sensor connector connected correctly in accordance with a color Is the temperature sensor connected correctly without separation Does the both terminal of sensor satisfy the resistance value in accordance with temperature Refer to the R T TABLE Is the resistance value of sensor connection pull_up 18K Reconn...

Page 72: ...tor connected correctly in accordance with a color Is the temperature sensor connected correctly without separation Does the both terminal of sensor satisfy the resistance value in accordance with temperature Refer to the R T TABLE Is the resistance value of sensor connection pull_up 24K Reconnect the sensor connector Change the position of sensor Exchange the sensor Exchange the PCB Exchange the ...

Page 73: ...or connected correctly in accordance with a color Is the temperature sensor connected correctly without separation Does the both terminal of sensor satisfy the resistance value in accordance with temperature Refer to the R T TABLE Is the resistance value of sensor connection pull_up 18 2K Reconnect the sensor connector Change the position of sensor Exchange the sensor Exchange the PCB Exchange the...

Page 74: ...sistance value in accordance with temperature 4 Is the resistance value of sensor connection pull_up correct 2 Troubleshooting procedure Isn t the Fan locked Is the connector connected correctly Is the color of Fan wire matched correctly Remove the Fan lock Connect the connector Exchange the Fan Exchange the PCB Normal operation Exit Yes Yes Yes No No No No ...

Page 75: ...ist 1 Is the connection of R S T power wire normal 2 Are Relay RY21 and R200 on the INVERTER PCB mounted normally 2 Troubleshooting procedure Yes No Check and correct the wire connection Are connection of the wire from INVERTER PBA to EMI PBA normal Exchange INVERTER PCB ...

Page 76: ...he compressor wire connected to the compressor normally Yes Yes Exchange the compressor Reinstall and remove the obstruction Is the installation of outdoor unit good Reinstall and remove the obstruction Is the installation of indoor unit good Open valve screw to the end Are the service valves full opened Correct the compressor wire connection Is insuration resistance between each compressor termin...

Page 77: ...nd communication cable wiring error 2 Troubleshooting procedure Yes Restart after power off Is the communication error occurred again Isn t the power cable and communication cable wiring error Exchange the outdoor unit PCB Terminate the service Correct the wrong wiring Is the connection of communication cable normal Correct the connection of communication cable Yes Yes No No No ...

Page 78: ...ure Yes Restart after power off Is the restart error occurred again Is the interphase resistance value of compressor ulv vlw wlu normal Is the connection cable for the compressor and power terminal normal Exchange the PCB Terminate the service Exchange the compressor Is the compressor body and interphase resistance insulated Exchange the compressor Correct the cable connection Yes Yes Yes No No No...

Page 79: ...dure Yes Restart after power off Is the lock error occurred again Is the interphase resistance value of compressor ulv vlw wlu normal Is the connection cable for the compressor and power terminal normal Exchange the PCB Terminate the service Exchange the compressor Is the compressor body and interphase resistance insulated Exchange the compressor Correct the cable connection Yes Yes Yes No No No N...

Page 80: ...ach contact Yes No Exchange M C Check and reconnecting the AC power cable wire Is the AC Power cable connection to the outdoor unit terminal block good Check and reconnecting the reactor wire at the TAB terminal Is the connection of reactor terminal good Replace the blown FUSE Are the FUSEs on EMI PCB blown Is each contact resistance normal less than 0 1ohm Does the error reappear frequently The c...

Page 81: ...wer supplying circuit 1 Display PCB part LED lamps Switch Remocon module 1 INDOOR EMI PCB part Line filter Noise Capacitor and Varistor 3 The PCB is composed of the 3 part in the outdoor unit 1 EMI PCB part Line filter for electrical noise Varistors for surge and Fuses 1 MAIN PCB part Refrigeration cycle controller with MICOM 1 INVERTER PCB part Compressor driving inverter and BLDC fan controller ...

Page 82: ...CB 1 Is RED LED ON 2 Is GREEN LED Blinking once a second 3 Is LEDs displaying error code pattern t 1 QPXFS USPVCMF t CBE DPNNVOJDBUJPO CFUXFFO JOEPPS BOE outdoor unit t FSSPS EFUFDUJPO 5 Check LED display on INVERTER PCB 1 Is RED LED ON 2 Is GREEN LED Blinking once a second 3 Is LEDs displaying error code pattern t 7 35 3 1 QPXFS USPVCMF t 0 DPNNVOJDBUJPO CFUXFFO BOE INVERTER PCB t FSSPS EFUFDUJPO...

Page 83: ...rt Outdoor Unit Discharge Temperature Sensor Measure sensor resistance with a multimeter Normal At the normal temperature 563kΩ 157kΩ 0 C 30 C see 12 2 7 Abnormal 0Ω Open or Short Outdoor Unit BLDC FAN MOTOR Measure terminal resistance with a multimeter Normal At the normal temperature 10 C 30 C Abnormal 0Ω Open or Short Outdoor Unit 4way Valve Solenoid Measure resistance with a multimeter Normal ...

Page 84: ...an TAP YW396 09AV WHT Temperature Sensor SMW250 02 YEL Ventilator YW396 03AV BLK Wired Remote Controller Power YW396 02 WHT Drain Pump YW396 03AV YEL External Control S W Part SMW250 02 RED Hot Coil YW396 03AV RED EEV SMW250 05 BLU SMW250 05 BLU Indoor Fan SSR YW396 03AV RED Display SMW200 11 WHT SMW200 11 WHT Power YW396 03AV WHT External Control Display Part SMW250 04 RED Transformer Out YW396 0...

Page 85: ...COR YAN396 06V WHT EEV A CONNECTOR SMAW250A 05 RED DISPLAY CONNECTOR SMW200 10 NTR DISPLAY CONNECTOR SMAW250A 03 RED PC DOWNLOADCONNECTOR SMW200 10 BLK S NE T CONNECTOR SMW200 04 NTR AS PRO DOWNLOAD CONNECTOR SMAW200A 07 WHT DISPLAY CONNE CTORS MW200 05 NTR DOWNLOAD INV CONNECTOR S MW200 10 RED 1 2 3 4 5 9 11 10 8 7 6 This Document can not be used without Samsung s authorization ...

Page 86: ...onics 5 3 1 2 3 5 3 OUTDOOR SUB PCB 12V POWER CONNECTOR YW396 02V BLU MAIN SUB SIGNAL CONNECTOT SMW250 04 WHT MAIN SUB SIGNAL CONNECTOT SMW200 15NTR 1 2 3 This Document can not be used without Samsung s authorization ...

Page 87: ...Samsung Electronics 6 1 6 Wiring Diagram 6 1 Indoor Unit This Document can not be used without Samsung s authorization ...

Page 88: ...6 2 Samsung Electronics 6 2 Outdoor Unit Q Outdoor Unit RC035DHXEA RC052DHXEA This Document can not be used without Samsung s authorization ...

Page 89: ...Samsung Electronics 6 3 This Document can not be used without Samsung s authorization Q Outdoor Unit RC071DHXEA ...

Page 90: ...UPS SBJO 1VNQ PU PJM OEPPS BO 1BSU 5 1 OEPPS BO 1BSU 443 JTQMBZ 1BSU PNNVOJDBUJPO 1BSU EESFTT 4 8 0QUJPO 4 8 5FNQFSBUVSF 4FOTPS 1BSU 3PPN 5FNQFSBUVSF 1JQF O 5FNQFSBUVSF 1JQF 0VU 5FNQFSBUVSF FBUFS JTDIBSHF 5FNQFSBUVSF YUFSOBM POUSPM 1BSU 7 POUSPM 1BSU 8JSFE 3FNPUF POUSPMMFS 1BSU 7 7 Schematic Diagram 7 1 7 1 Indoor Unit ...

Page 91: ...This Document can not be used without Samsung s authorization 7 2 OUTDOOR UNIT PCB 7 2 1 MAIN PCB RC071DHXEA Samsung Electronics 7 2 ...

Page 92: ...This Document can not be used without Samsung s authorization 7 2 OUTDOOR UNIT PCB 7 2 2 SUB PCB RC071DHXEA Samsung Electronics 7 3 ...

Page 93: ...7 2 OUTDOOR UNIT PCB 7 2 3 MAIN PCB RC035 052DHXEA Samsung Electronics 7 4 This Document can not be used without Samsung s authorization ...

Page 94: ...7 2 OUTDOOR UNIT PCB 7 2 4 SUB PCB RC035 052DHXEA Samsung Electronics 7 5 This Document can not be used without Samsung s authorization ...

Page 95: ...ser unit and sent to the evaporator COMPRESSOR Low temperature and low pressure coolant is compressed and sent to the cycling system EVAPORATOR Liquid coolant sucked in through the capillary tubes cools down the room by absorbing the sur rounding heat as it evaporates converting from liquid to gas Absorbing heat required for evaporation SERVICE VALVE You can open the valve by turning the need valv...

Page 96: ...ply Normal N 115V 60Hz A 220V 60Hz B 208 230V 60Hz C 200 220V 50Hz D 220 240V 50Hz E 208 230V 60Hz 3Φ F 380 415V 50Hz 3Φ G 127V 50Hz M 380V 60Hz 3Φ H 460V 60Hz 3Φ J I ProductType N D DVM J FJM M MULTI S SINGLE CAC H Hydro Box 3 Chassis 1 1WAY CST 2 2WAY M MINI 4WAY 4 4WAY H High Static Pressure DUCT S Middle Static Pressure L Low Static Pressure C CEILING CONV J CONSOLE F PAC P FAC B Mont Blabc RA...

Page 97: ...s Co Ltd 2012 Printed in China Code No DB98 33563A 2 GSPN Global Service Partner Network Area Web Site Europe http gspn1 samsungcsportal com CIS http gspn1 samsungcsportal com Mideast Africa http gspn1 samsungcsportal com Asia http gspn2 samsungcsportal com North America http gspn3 samsungcsportal com Latin America http gspn3 samsungcsportal com China http china samsungportal com ...

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