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Samsung AC035MNADKH/EU Service Manual
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Samsung AC035MNADKH/EU Service Manual

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AIR CONDITIONER
AC026MNADKH
AC035MNADKH
AC052MNADKH
AC071MNADKH
AC026MXADKH
AC035MXADKH
AC071MXADKH
Refer to the service manual in the GSPN(see the rear cover) for the more information.
SYSTEM AIR CONDITIONER
Model :
AC052MXADKH
INDOOR UNIT
OUTDOOR UNIT
AC026MXADKH/EU
AC026MNADKH/EU
AC035MXADKH/EU
AC035MNADKH/EU
AC052MXADKH/EU
AC052MNADKH/EU
AC071MNADKH/EU
AC071MXADKH/EU
CONTENTS
1. Precautions
2. Product Specifications
3. Disassembly and Reassembly
4. Troubleshooting
5. PCB Diagram
6. Wiring Diagram
7. Reference Sheet

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  • Page 1 SYSTEM AIR CONDITIONER INDOOR UNIT OUTDOOR UNIT Model : AC026MXADKH/EU AC026MNADKH/EU AC035MXADKH/EU AC035MNADKH/EU AC052MXADKH/EU AC052MNADKH/EU AC071MNADKH/EU AC071MXADKH/EU AIR CONDITIONER CONTENTS 1. Precautions 2. Product Specifications AC026MNADKH 3. Disassembly and Reassembly AC035MNADKH AC052MNADKH AC071MNADKH 4. Troubleshooting 5. PCB Diagram 6. Wiring Diagram...

  • Page 2: Table Of Contents

    4-4-7 Compressor starting error ........................4-30 4-4-8 Compressor wire missing error/rotation error ................4-31 4-4-9 O.C(Over Current) error ........................4-32 4-4-10 DC_link voltage sensor error ......................4-33 4-4-11 DC_link voltage under/over error, Over voltage protection error/PFC over load ..4-34 Samsung Electronics...
  • Page 3 15. PCB Diagram ............................. 5-1 Indoor Unit ............................5-2 Outdoor Unit ............................. 16. Wiring Diagram ..........................6-1 Indoor Unit ............................6-2 Outdoor Unit ............................ 7. Reference Sheet ................................................... 7-1 Index for Model Name ......................7-2 Refrigerating Cycle Diagram Samsung Electronics...

  • Page 4: Precautions

     Check whether the installation location is at least two meters away from other electronic products such as TV, video, or audio. – Otherwise, the video quality might be degraded or noise might be generated.  Do not let end users repair the products themselves. – Unauthorized disassembly might cause electric shock or fire. Samsung Electronics...

  • Page 5: Precautions Related To Product Safety

    – Release the high pressure and low pressure valve caps. – Close the high pressure valve completely using an L-wrench – After about two minutes, close the low pressure valve completely. – Stop running the air conditioner. – Separate the connecting pipe. Samsung Electronics...

  • Page 6: Product Specifications

    With the advanced BLDC inverter technology, it makes a room cool with highly energy saving and arises the efficiency of air conditioner.  Long Ambient Operation(In Low Temperature) It can arise the reliability and the capacity of the air conditioner, especially operated in low temperature.  Eco-friendly Product(Lead-Free, ROHS, WEEE)  Easy installation of ultra-lightweight indoor unit Samsung Electronics...

  • Page 7: Product Specifications

    In case of strongest air Heating) Outdoor unit 51/51 53/53 blow Refrigerant (R410A) 1,050 1,050 Liquid 6.35 6.35 Connecting Pipe 9.52 9.52 Additional Refrigerant (R410A) Chargeless Chargeless Standard Extension length(Total) Extension length(Elevation) Product 01007F-191448-271A21-371100 01007F-19548C-272328-371100 Option Option Code Installation 020000-100000-200000-300000 020000-100000-200000-300000 Option Samsung Electronics...
  • Page 8 In case of strongest air Heating) Outdoor unit 58/58 60/60 blow Refrigerant (R410A) 1,300 1,500 Liquid 6.35 6.35 Connecting Pipe 12.7 15.88 Additional Refrigerant (R410A) Standard Extension length(Total) Extension length(Elevation) Product 019077-19548E-27343C-371710 01027C-19547F-274750-371700 Option Option Code Installation 020000-100000-200000-300000 020000-100000-200100-300000 Option Samsung Electronics...

  • Page 9: Accessories

    USER MANUAL DB68-06495A INSTALLATION MANUAL DB68-06496A Essential Offer (Indoor Unit) Remote Control Holder DB61-06087A M4 x 16 Tapped Screws 6002-000234 Cap Screws DB67-01404B CARD WARRNATY DB68-02596B Drain Plug DB67-20011A Essential Offer (Outdoor Rubber Leg DB67-01533A Unit) INSTALLATION MANUAL DB68-06488A Samsung Electronics...

  • Page 10: Disassembly And Reassembly

    3. Disassembly and Reassembly  Necessary Tools Item Remarks +SCREW DRIVER Adjustable Wrench (8mm, 10mm, 13mm) M6, M8 Hex Wrench Samsung Electronics...

  • Page 11: Indoor Unit

    2) Detach FILTER PRE from the PANEL FRONT. 3) Cover Panel is assembled on bottom of indoor unit as shown in the figure. Remove the Cap Screw as shown on the right side and then remove the screw and separate the Cover Panel. Samsung Electronics...
  • Page 12 5) Separate the hook after pushing both end of Cover Panel as shown in the figure. (Watch out for the damage of the hook) 6) Raise front part upward obliquely as shown in the figure and then remove the hooks. Samsung Electronics...
  • Page 13 Assembly of Cover Panel after service end. - Reassembly is in the reverse order of the removal. - Piping and drain hose must be careful not to damage and Progress must be done with both hands. Hook (Side) Hook (Center) Screw Cap Screw Samsung Electronics...
  • Page 14 4 HOOK Structures. When separate the hook : Use the (-) screw Driver. (-)Screw Driver Insert the hook and then pull the hook as shown on the right side. (Watch out for the damage of the hook) Samsung Electronics...
  • Page 15 Parts Procedure Remark 9) Remove the Panel Frame from the Main Frame as shown on the right side. Samsung Electronics...
  • Page 16 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. Samsung Electronics...
  • Page 17 9) Take off the CASE-CONTROL from the main frame after loosen the remaining connector. Caution: When you separate the connector, pull pressing the locking button. TRAY DRAIN 1) To detach TRAY-DRAIN from the main frame, pull the bottom of the TRAY-DRAIN towards you. Samsung Electronics...
  • Page 18 2) Unfasten the screw at the left side. (use + Screw Driver) 3) Unfasten the screw at the right side. (use + Screw Driver) 4) To detach Evaporator from the main frame, pull the bottom of the Evaporator towards you. Samsung Electronics...
  • Page 19 FAN MOTOR 1) Unfasten the screw. (use + Screw Driver) & CROSS FAN 2) Detach the FAN Motor case. 3) Unfasten the screw a little. (use + Screw Driver) 4) Pull the CROSS-FAN to the left side. 3-10 Samsung Electronics...

  • Page 20: Outdoor Unit

    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. Samsung Electronics 3-11...
  • Page 21 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. 3-12 Samsung Electronics...
  • Page 22 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. Samsung Electronics 3-13...
  • Page 23 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. 3-14 Samsung Electronics...
  • Page 24 2)disassembly the felt comp sound. loosen the 3 bolts at the bottom . When removing the compressor, CAUTION Heat Exchanger, and Pipe, purge the Coolant inside the Compressor complete- ly and remove the pipe with a welding flame. Samsung Electronics 3-15...
  • Page 25 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. 3-16 Samsung Electronics...
  • Page 26 Parts Procedure Remark common work 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. Samsung Electronics 3-17...
  • Page 27 3) Loosen 4 pcs motor screw. 4) Loosen 2 pcs screw of bracket motor. 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 3-18 Samsung Electronics...
  • Page 28 Parts Procedure Remark 3) Loosen 2 screws , disassemble the Coil Harmonic. 4) Loosen the screw of the cover terminal. Samsung Electronics 3-19...
  • Page 29 4) Detach the heat exchanger. When removing the compressor, CAUTION Heat Exchanger, and Pipe, purge the Coolant inside the Compressor complete- ly and remove the pipe with a welding flame. Compressor 1)Loosen the 3 bolts at the bottom of com- pressor. 3-20 Samsung Electronics...
  • Page 30 1) loosen 1 pcs screw of cover control 2) loosen 8 pcs screw of the cabi top cover. 3) loosen 12 pcs screw of the cabi front 4) loosen 7 pcs screw of the cabi side right. Samsung Electronics 3-21...
  • Page 31 Remark 5)loosen 3pcs screw of the cabi side left. Fan & Motor 1) loosen the fan screw according the indication and detach the fab propeller 2)Cut the cable-tie 3)disconnect the wire betwwen assy control out and motor. 3-22 Samsung Electronics...
  • Page 32 4) loosen 4 pcs motor screw. 5) loosen 4 pcs screw of bracket motor assy control out 1) lossen the screw of the cover termimal 2)lossen the screws that connected partition and case control then pull up the control out. Samsung Electronics 3-23...
  • Page 33 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. Compressor 1)loosen the 3 bolts at the bottom of compres- sor. 3-24 Samsung Electronics...

  • Page 34: Troubleshooting

    Remove the batteries from the remote control, and then insert them again. b While holding down the (High Temp) and (Low Temp) buttons simultaneously, insert the batteries into the remote control. c Make sure that you are entered to the mode for setting the options: Samsung Electronics...
  • Page 35 Set the SEG8 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 SEG8 following order: Samsung Electronics...
  • Page 36 (Mode) button. Auto and Off appear on the remote control display. 11 Set the SEG14 and SEG15 values: a Set the SEG14 value by pressing the (Low Fan) button repeatedly until the value you want to set appears on the remote control display. SEG14 Samsung Electronics...
  • Page 37 When you press the (Low Fan) or (High Fan) button, values appear in the SEG20 following order: 5 Press the (Mode) button. Fan and Off appear on the remote control display. Samsung Electronics...
  • Page 38 Make sure that this command is received by the indoor unit. When it is successfully received, you can hear a short sound from the indoor unit. If the command is not received, press the (Power) button again. Samsung Electronics...
  • Page 39 Group channel Function Page Setting RMC address Group address (x16) Indication Details Indication Details Indication Details Indication Details Reserved Reserved No RMC Indication address and details RMC1 0 to 2 RMC2 0 to F RMC address setting mode Samsung Electronics...
  • Page 40 Function Page Mode temperature control fan RPM sensor Indication Details Indication Details Indication Details Indication Details Indication Details Disuse (recessed installation) Disuse Disuse High-ceiling Reserved mode (recessed Indication installation) and details Disuse (exposed installation) High-ceiling mode (exposed installation) Samsung Electronics...
  • Page 41 Cycle time of Function Page remote control compensation Swing Indication Details Indication Details Indication Details Indication Details 0 or 1 Indoor 1 Default seconds Reserved Reserved (default) Indication and details Indoor 2 2°C seconds Indoor 3 5°C seconds Indoor 4 Samsung Electronics...
  • Page 42 Example: Changing the Buzzer control (SEG17) option of the installation options to 1 disuse. Option SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 Tens position Units position Option mode to Function Page Mode of the option of the option New value change number number Indication Samsung Electronics...
  • Page 43 14. Simultaneous opening of cooling/heating MCU SOL valve E180 (1st detection) 15. Simultaneous opening of cooling/heating MCU SOL valve E181 (2nd detection) Other outdoor unit self-diagnosis error that is not on the above list EEPROM error E162 EEPROM option error E163 4-10 Samsung Electronics...

  • Page 44: Troubleshooting For Outdoor Unit

    Check whether 3 phase is reversed or opened. E425 Heating operation restricted at outdoor temperature over HEATING E440 Theat_high value Cooling operation restricted at outdoor temperature below COOLING E441 Tcool_low value Fan speed error FAN1 ERROR E458 Samsung Electronics 4-11...
  • Page 45 Smart install is not installed E508 Gas leak detected Check the refrigerant E554 Error due to mismatching capacity of indoor and outdoor unit Check the indoor and outdoor unit capacity E556 Inverter EEPROM Checksum error E590 Inverter Boot Code error E660 4-12 Samsung Electronics...

  • Page 46: Troubleshooting By Symptoms

    In this case, is the resistance 8.300 value out of range in the temperature table on the right? 10.00 12.10 Indoor temperature sensor 14.70 failure (replace) 18.00 Restart the system after replacing the PCB 22.00 28.30 33.90 42.30 Samsung Electronics 4-13...

  • Page 47: Indoor Heat Exchanger Temperature Sensor (Open/Short)

    In this case, is the resistance 8.300 value out of range in the temperature table on the right? 10.00 12.10 Failure of the indoor heat 14.70 exchanger temperature sensor (replace) 18.00 Restart the system after replacing the PCB 22.00 28.30 33.90 42.30 4-14 Samsung Electronics...

  • Page 48: Indoor Fan Error

    PCB? Connect the connector to PCB and restart the unit Is there foreign substance stuck in the motor fan? Remove the foreign substance and restart the unit Replace the PCB and restart the unit Samsung Electronics 4-15...

  • Page 49: Communication Error After Finishing Tracking

    PCB and replace the PCB Reconnect the cable connecting the outdoor unit to the indoor unit and restart the unit. If the communication still doesn’t work, replace the indoor unit PCB. Good +0.7V -0.7V 4-16 Samsung Electronics...

  • Page 50: Indoor Unit Float Sensor Error

    Is the terminal voltage around AC 220V? Is the water level in drain pan decreasing? Replace the drain pump Replace the indoor unit PCB Normal operation • F loat sensor error is cleared only Replace the drain pump when the indoor power is reset Samsung Electronics 4-17...

  • Page 51: Eeprom Circuit Failure

    EEPROM component failure, EEPROM circuit parts missing/damaged/soldering failure Are the EEPROM circuit components in good conditions? (missing components / damage / soldering failure) Replace the PCB if the restart fails Restart the unit after replacing the PCB 4-18 Samsung Electronics...
  • Page 52 Is the voltage between Replace the inverter PBA the terminal 2 (~) and 4 (~) of the bridge diode 220V? Is the fuse connected? Replace the fuse Replace the inverter PBA Is the resistance value of R001 200Ω? Cont. Samsung Electronics 4-19 4-19...

  • Page 53: Outdoor Unit Is Not Powered On

    Outdoor unit is not powered on – Initial diagnosis (cont.) Cont. Is the reactor connector Connect the reactor connected correctly? Replace the PBA. 4-20 Samsung Electronics...

  • Page 54: Communication Error

    Is the power is normal? Exchange the PBA of no power unit (check the LED Lamp Exchange the indoor unit PBA. Terminate the service. Is the communication error occurred again? Exchange the outdoor unit PBA. Samsung Electronics 4-21...

  • Page 55: Outdoor Temperature Sensor Error

    Connect the sensor to PBA connector (6pin) supply power and measure the voltage of #1-#2 in the connector Exchange the PBA of no power unit Below 0.5V or Over 4.5V? Micom error or connector check Exchange the Outdoor PBA 4-22 Samsung Electronics...
  • Page 56 Connect the sensor to PBA connector (4pin) supply power and measure the voltage of #1-#2 in the connector Exchange the PBA of no Ourdoor PBA Below 0.5V or Over 4.5V? Micom error or connector check Exchange the Outdoor PBA Samsung Electronics 4-23...

  • Page 57: Outdoor Coil Temperature Sensor Error

    40°C - 5.83kohm Connect the sensor to PBA connector (6pin) supply power and measure the voltage of #5-#6 in the connector Exchange the Outdoor PBA Below 0.5V or Over 4.5V? Micom error or connector check Exchange the Outdoor PBA 4-24 Samsung Electronics...
  • Page 58 40°C - 5.83kohm Connect the sensor to PBA connector(4pin) supply power and measure the voltage of #3-#4 in the connector Exchange the Outdoor PBA Below 0.5V or Over 4.5V? Micom error or connector check Exchange the Outdoor PBA Samsung Electronics 4-25...

  • Page 59: Outdoor Discharge Temperature Sensor Error

    40°C - 115kohm Connect the sensor to PBA connector (6pin) supply power and measure the voltage of #3-#4 in the connector Exchange the Outdoor PBA Below 0.5V or Over 4.5V? Micom error or connector check Exchange the Outdoor PBA 4-26 Samsung Electronics...
  • Page 60 40°C - 115kohm Connect the sensor to PBA connector(4pin) supply power and measure the voltage of #3-#4 in the connector Exchange the Outdoor PBA Below 0.5V or Over 4.5V? Micom error or connector check Exchange the Outdoor PBA Samsung Electronics 4-27...

  • Page 61: Outdoor Discharge Over Temperature Error

    Restart after power off Is the discharge over temperature sensor error Terminate the service appeared again? Download the EEPROM data Is the discharge over temperature sensor error Terminate the service appeared again? Exchange the Outdoor PBA Exchanged the Compressor 4-28 Samsung Electronics...

  • Page 62: Outdoor Fan Motor Error

    Is the voltage of CN901 #3-#5 and #3-#6 with in Exchange the Outdoor PBA 1Vdc~15Vdc during the operation? PBA problem or Motor problem Change the PBA first and check the operation Exchange the Fan motor Samsung Electronics 4-29...

  • Page 63: Compressor Starting Error

    Connect the comp wire normally Is the connection of compressor wire is normal? Download the EEPROM data Is the restart error occurred again? Terminate the service Is the compressor body and interphase Exchange the Outdoor PBA resistance insulated? Exchanged the Compressor 4-30 Samsung Electronics...

  • Page 64: Compressor Wire Missing Error/Rotation Error

    Connect the comp wire normally Is the connection of compressor wire is normal? (PBA and Compressor) Is the restart error occurred again? Terminate the service Is the compressor body and interphase Exchange the Outdoor PBA resistance insulated? Exchanged the Compressor Samsung Electronics 4-31...

  • Page 65: Over Current) Error

    Terminate the service occurred again? Correct the sensor position or exchange the Is the position of temperature sensor and sensor sensing value normal? Is the compressor body and interphase Exchange the Outdoor PBA resistance insulated? Exchanged the Compressor 4-32 Samsung Electronics...

  • Page 66: Dc_Link Voltage Sensor Error

    Normal range(280Vdc~320Vdc) Is the DC_link sensing voltage(R104 or R004) is normal in Exchange the Outdoor PBA operation mode? Normal range (0.2Vdc~2.8Vdc) Exchange the Outdoor PBA Is the reactor insulation damaged? Exchange the Reactor Samsung Electronics 4-33...

  • Page 67: Dc_Link Voltage Under/Over Error, Over Voltage Protection Error/Pfc Over Load

    Check the input power mode? Normal range(280Vdc~320Vdc) Is the DC_link sensing voltage(R104 or R004) is normal in Exchange the Outdoor PBA operation mode? Normal range (0.2Vdc~2.8Vdc) Exchange the Outdoor PBA Is the reactor insulation damaged? Exchange the Reactor 4-34 Samsung Electronics...
  • Page 68 Correct the sensor position or exchange the Is the position of temperature sensor and the sensing value sensor normal? Is the connection cable for the compressor and Correct the cable connection power terminal normal? Exchange the Outdoor PBA Samsung Electronics 4-35...

  • Page 69: Current Sensor Error/Input Current Sensor Error

    3) Is there no short or open around IC451(PF2) or IC451,IC452(PF3)? 2. Troubleshooting procedure Restart after power off. Exchange the Outdoor PBA Is the PFC shunt and IPM shunt resistance value correct? Terminate the service Is the current sensor error appeared again? Exchange the Outdoor PBA 4-36 Samsung Electronics...

  • Page 70: Heatsink Sensor Error/Heatsink Over Heat

    4) Is the cover assembly in control-box normal? 2. Troubleshooting procedure Restart after power off. Fastening the screw Are there screws in PBA-heatsink? (4 screws) Check the fan connection Is the fan operation normal? Change the Fan motor Exchange the Outdoor PBA Samsung Electronics 4-37...

  • Page 71: Comp Vlimit Error/Comp Current Limit Error

    Terminate the service again? Is the position of temperature sensor and Correct the sensor position or exchange the sensing value normal? sensor Is the compressor body and interphase Exchange the Outdoor PBA resistance insulated? Exchange the Outdoor PBA 4-38 Samsung Electronics...

  • Page 72: Eeprom Error/Otp Error

    3) Did you download or insert EEPROM IC, after changing outdoor PBA? 2. Troubleshooting procedure power off and download EEPROM data (or. Insert the service EEPROM IC) Restart after power off Terminate the service Is the error appeared again? Exchange the Outdoor PBA Samsung Electronics 4-39...

  • Page 73: Ac Zero Cross Signal Error

    1) Check the power condition at customer's house (Is there any power noise?) 2) Have been there power failure? 2. Troubleshooting procedure Restart after power off Is the AC line zero cross signal error appeared Terminate the service again? Exchange the Outdoor PBA 4-40 Samsung Electronics...

  • Page 74: Operation Condition Secession Error

    * Heating mode * * Cooling mode * Is the outdoor temperature over 40°C or under Is the outdoor temperature under °C? -30°C? The temperature condition is too poor to operate. Wait until temperature is changed Samsung Electronics 4-41...

  • Page 75: Capacity Miss Match Error

    Reset the option code again at indoor unit Is the capacity miss match error appeared Terminate the service again? Download the EEPROM data Terminate the service Is the capacity miss match error appeared again? Exchange the Outdoor PBA Exchange the Indoor PBA 4-42 Samsung Electronics...

  • Page 76: Gas Leak Error

    Is the EEV valve is operation? Change the EEV valve Check the sound of EEV valve after power on. Check the pipe crack. Is the pressure of refrigerant normal? Fill up the refrigerant. Exchange the Indoor PBA Exchange the Outdoor PBA Samsung Electronics 4-43...

  • Page 77: Pcb Diagram

    5. PCB Diagram 5-1 Indoor Unit MAIN PCB ■ AC026MNADKH / AC035MNADKH / AC052MNADKH / AC071MNADKH Samsung Electronics...
  • Page 78 #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 Samsung Electronics...
  • Page 79 ■ Sub PCB ① CN1-2WIRES COMM. #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 Samsung Electronics...

  • Page 80: Outdoor Unit

    SUB PBA POWER:SMW200-05P BLK EEV1:SMW250-05 RED COMP:DBT061-3P WHT SMPS: SMW250-03 BLU EEPROM:B7P-MQ WHT TEMP SENSOR: SMW200-08P WHT MAIN DOWNLOAD:YDW200-20 BLK SUB PBA: SMW200-10P BLK DRED:SMW250-05 WHT INV DOWNDOWN: YDAW200-20TR BLK SUB PBA: SMW200-10P WHT ENABLE CGND: SMW250-03 RED Samsung Electronics...
  • Page 81 5-2-2 MAIN PCB  AC052MXADKH 11 12 Samsung Electronics...
  • Page 82 CN901 : BLDC MOTOR CN551: Downloader CN451 : COMP POWER CN051 : Reactor #1: DV310V #1~#10 : Download #1 : COMP U-Phase #1~#2 : Reactor #3: GND #2 : COMP V-Phase #4: DC15V #3 : COMP W-Phase #5: FAN_PWM #6: FAN_Feedback Samsung Electronics...
  • Page 83 5-2-3 SUB PCB  AC052MXADKH ① ② CN12 : DC12V CN951 : SIGNAL TO MAIN PCB #1 : DC12V #1~#28 : SIGNAL TO MAIN PCB #2 : GND Samsung Electronics...
  • Page 84 YW396-02 YEL 3711-003843 CN401 OUT/DIS/COND/OLP SENSOR SMW200-08 WHT 3711-000015 CN402 COND SNESOR(C/O MODEL) SMW250-02 WHT 3711-000997 CN602 SMW250-05 BLU 3711-002001 CN300 DOWNLOAD YDW200-20 BLK 3711-000176 CN302 DC12V YW396-02 BLU 3711-000177 CN301 COMMUNICATION YW396-02 RED DB65-00157A CN303 SOLUTION BR-500C Samsung Electronics...
  • Page 85 6. Wiring Diagram 6-1 Indoor Unit This Document can not be used without Samsung’s authorization. Samsung Electronics...
  • Page 86 6-2 Outdoor Unit  AC026MXADKH / AC035MXADKH This Document can not be used without Samsung’s authorization. Samsung Electronics...
  • Page 87  AC052MXADKH / AC071MXADKH This Document can not be used without Samsung’s authorization. Samsung Electronics...
  • Page 88 PACK MULTI RAC-Vivace AIR HANDIING UNIT DVM HOME AIR HANDLING UNIT SINGLE HYDRO UNIT MULTI HYDRO UNIT MONO HYDRO UNIT WATER TANK FLAT ※ "/" can be removed from the buyer card if there are not enough digits. STAND Samsung Electronics...
  • Page 89 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 overload the compressor.) Samsung Electronics...

  • Page 90: Samsung Electronics

    This Service Manual is a property of Samsung Electronics Co., Ltd. © Samsung Electronics Co., Ltd. Jun. 2016. Any unauthorized use of Manual can be punished under applicable Printed in China. International and/or domestic law.

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