Samsung AC052MNMSEH Service Manual
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Samsung AC052MNMSEH Service Manual

System air conditioner, indoor/outdoor unit
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See also: Installation Manual
AIR CONDITIONER
AC052MNMSEH
AC071MNMSEH
AC100MNMSEH
AC052MXASEH
AC100MXASEH
AC120MNMSEH
AC071MXASEH
AC120MXASEH
SYSTEM AIR CONDITIONER
ndoor Unit
Outdoor Unit
I
Model Name :
AC052MNMSEH
AC052MXASEH
AC071MNMSEH
AC071MXASEH
AC100MNMSEH
AC100MXASEH
AC120MNMSEH
AC120MXASEH
Model Code :
AC052MNMSEH/EU
AC052MXASEH/EU
AC071MNMSEH/EU
AC071MXASEH/EU
AC100MNMSEH/EU
AC100MXASEH/EU
AC120MNMSEH/EU
AC120MXASEH/EU
CONTENTS
1. Precautions
2. Product Speci cations

3. Disassembly and Reassembly

4. Troubleshooting

5. PCB Diagram

6. Wiring Diagram

7. Reference Sheet

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Summary of Contents for Samsung AC052MNMSEH

  • Page 1: Disassembly And Reassembly

    SYSTEM AIR CONDITIONER ndoor Unit Outdoor Unit Model Name : AC052MNMSEH AC052MXASEH AC071MNMSEH AC071MXASEH AC100MNMSEH AC100MXASEH AC120MNMSEH AC120MXASEH Model Code : AC052MNMSEH/EU AC052MXASEH/EU AC071MNMSEH/EU AC071MXASEH/EU AC100MNMSEH/EU AC100MXASEH/EU AC120MNMSEH/EU AC120MXASEH/EU AIR CONDITIONER CONTENTS 1. Precautions 2. Product Speci cations 3. Disassembly and Reassembly...

  • Page 2: Table Of Contents

    Contents 11. Precautions ............................1-1 Precautions for the Service ......................1-2 Precautions for the Static Electricity and PL ................1-3 Precautions for the Safety ....................... 1-4 Others ..............................12. Product Specifications ........................2-1 The Feature of Product ........................2-2 Product Specifications ........................
  • Page 3 PCB Diagram and Parts list ......................5-1 INDOOR UNIT ..............................5-2 OUTDOOR UNIT ..............................Wiring Diagram ..........................6-1 Indoor Unit ................................6-2 Outdoor Unit ................................ Reference Sheet ..........................7-1 Refrigerating Cycle Diagram ......................7-2 Index for Model Name ........................Samsung Electronics...

  • Page 4: Precautions

    - Release the valve caps on High and Low pressure side. - Use L wrench to close the valve on the high pressure side. - Approximately 2 minutes after, close the valve on the low pressure side. - Stop operation of the air conditioner. - Disconnect the pipes. Samsung Electronics...

  • Page 5: Product Specifications

    It can give the benefit to the installers and aries the reliability of the 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) Samsung Electronics...

  • Page 6: Product Specifications

    2-2 Product Spectification AC052MNMSEH AC071MNMSEH ITEM AC052MXASEH AC071MXASEH Indoor Unit Outdoor Unit IMAGE Remote Controller(MWR-WE10N) Power Product 220~240V, 50Hz 220~240V, 50Hz Indoor W*D*H 1150*480*260 1150*480*260 Outdoor W*D*H 790*285*548 880*310*798 Indoor Product kg(Net) Outdoor Product kg(Net) 37.5 Capacity Cooling/Heating(ISO) 5000/ 5500...

  • Page 7: Outdoor Unit

    In case of strongest air Outdoor unit 62/62 59/61 blow Refrigerant (R410A) 2500 3000 Liquid 9.52 9.52 Connecting Pipe 15.88 15.88 Additional Refrigerant (R410A) Standard Extension length(Total) Extension length(Elevation) Product 01B07C-1D5911-276470-370000 01B07C-1D547C-277882-370040 Option Option Code Installation 020000-100000-200000-300000 020000-100000-200000-300000 Option Samsung Electronics...

  • Page 8: Accessory

    DB62-04318S Insu DRAIN HOSE DB62-11028A Indoor Unit INSU HOSE D DB62-11028E INSU TUBE OUT DB62-11028F ASSY DRAIN HOSE JOINT DB67-01191A Ass'y Drain Hose Joint DB90-06701A GROMMET-HANGER DB63-00237A RUBBER LEG DB73-20134A INSTALLATION MANUAL DB68-06488A Outdoor unit DRAIN PLUG DB67-00477A Samsung Electronics...

  • Page 9: Disassembly And Reassembly

    3. Disassembly and Reassembly ■ Necessary Tools Item Remark +SCREW DRIVER MONKEY SPANNER -SCREW DRIVER NIPPER ELECTRIC MOTION DRIVER L-WRENCH Samsung Electronics...

  • Page 10: Indoor Unit

    3-1 Indoor Unit ■ AC052MNMSEH / AC071MNMSEH / AC100MNMSEH / AC120MNMSEH Parts Procedure Remark 1) After disassembling 16 places indicating Blower & Motor 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.
  • Page 11 Parts Procedure Remark 1) After disassembling 1 Indicating screw, Control In detach the Cover control. 2) Detach the Motor-Fan and Sensor Connector from the PCB. Samsung Electronics...
  • Page 12 Parts Procedure Remark 3) Disassemble 4 indicating screws and detach Control In from the set. Drain Pan Work is possible when Disassembling the Ass'y Cabi Bottom Blower. 1) Disassemble 7 indicating screws and detach Ass'y Cabi Bottom Drain. Samsung Electronics...
  • Page 13 Remark 2) Disassemble 4 indicating screws and detach the Drain Pan. (2 screws each at left and right side) Work is possible when Disassembling the Evap Ass'y Drain Pan. 1) Disassemble 5 indicating screws to detach Cover Pipe. Samsung Electronics...
  • Page 14 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. Samsung Electronics...

  • Page 15: 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...
  • Page 16 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. Samsung Electronics...
  • Page 17 Procedure Remark 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. Samsung Electronics...
  • Page 18 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. 3-10 Samsung Electronics...
  • Page 19 Parts Procedure Remark compressor 1) Disconnect the compressor lead wire . 2) Disassembly the felt comp sound. loosen the 3 bolts at the bottom of Samsung Electronics 3-11...
  • Page 20 ■ AC071MXASEH Parts Procedure Remark 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. 3-12 Samsung Electronics...
  • Page 21 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. Samsung Electronics 3-13...
  • Page 22 Parts Procedure Remark 6) Loosen fixing screws of the Cabinet Front. 3-14 Samsung Electronics...
  • Page 23 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. Samsung Electronics 3-15...
  • Page 24 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. 3-16 Samsung Electronics...
  • Page 25 Procedure Remark 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. Samsung Electronics 3-17...
  • Page 26 1) Loosen 2 fixing screws of the Cabi Front Rh and detach the Cabi Front Rh. 2) Loosen each 8 fixing screws and detach the Cabi Top Cover. 3) Loosen 2 fixing screws from the Cabi Front 4) Loosen fixing screws of thermistor wire. 3-18 Samsung Electronics...
  • Page 27 Parts Procedure Remark 5) Loosen the others screws and detach the Cabi Back Rh. 6) Loosen the fixing screws and detach the Cabi Back Lf. 7) Loosen fixing screws of the Cabi Front Lf. Samsung Electronics 3-19...
  • Page 28 2) Detach the Fan Propeller. 3) Loosen 4 fixing screws to detach the Motor.(Use Monkey Spanner.) 4) Disconnect the wire between Ass’y Control Out and Motor. 5) Loosen 2 fixing bolts and detach the Bracket Motor.(Use Monkey Spanner.) 3-20 Samsung Electronics...
  • Page 29 3) Pull up the Ass’y Control Out. 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. Samsung Electronics 3-21...
  • Page 30 Parts Procedure Remark Compressor 1)Loosen the fixing nut and detach the Compressor Lead Wire. (Use Monkey Spanner.) 3) Loosen the 3 bolts at the bottom of Compressor like the picture on the right side.(Use Monkey Spanner.) 3-22 Samsung Electronics...

  • Page 31: Troubleshooting

    Heating operation blocked Self diagnostic error Cooling operation blocked Self diagnostic error Outdoor fan 1 error Self diagnostic error [Inverter] Compressor startup error Outdoor unit protection control error [Inverter] Total current error/PFC over current error Outdoor unit protection control error Samsung Electronics...

  • Page 32: Error Contents

    Self diagnostic error Capacities not matched Outdoor unit protection control error Communication error between the indoor unit and Wired remote controller error wired remote controller Communication error between the Master and Wired remote controller error Slave wired remote controllers Samsung Electronics...
  • Page 33 2 min- with operation) utes) Flickering X Off   If you turn off the air conditioner when the LED is flickering, the LED is also turned off. Samsung Electronics...

  • Page 34: Outdoor Trouble Shooting

    FAN2 error E387 Hall IC connection error of Fan2 FAN2 error E389 V-limit error on Fan2 of compressor FAN2 error E391 Error due to DataFlash of Fan2 FAN2 error E393 Output current sensor error of Fan2 FAN2 error Samsung Electronics...
  • Page 35 Error due to overcurrent of Fan1 FAN1 error E484 PFC Overload (Over current) Error Check Outdoor Inverter PBA. E485 Error on input current sensor of inverter 1 (Short or Open) Check Outdoor EEPROM PBA E486 Over-voltage/low-voltage error of Fan1 FAN1 error Samsung Electronics...
  • Page 36 Check the indoor and Outdoor unit E556 unit Capacity Option code miss matching among the indoor units (only E557 Check the indoor option code for DPM) Outdoor EEPROM checksum error between MAIN and E590 INVERTER E660 Inverter Boot Code error Samsung Electronics...

  • Page 37: Troubleshooting By Symptoms

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

  • Page 38: Eva In And Out Sensor (Open/Short)

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

  • Page 39: Float Switch(Open)

    Is the terminal voltage around DC12V? 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...

  • Page 40: Fan Error

    How soon do the error occur after fan Was FAN stopping in operation? and restart the unit. opreation? More than 6 minutes About one minute Replace the MAIN/BLDC PCB and Replace the MAIN/BLDC PCB and restart the unit. restart the unit. 4-10 Samsung Electronics...

  • Page 41: Eeprom Error

    Connect the EEPROM PCB to MAIN PCB and restart the unit Reconnect the EEPROM PCB to MAIN PCB Is the error mode disappear ? Replace the EEPROM PBA and restart the unit The indoor unit work normaly Samsung Electronics 4-11...

  • Page 42: Option Error

    Wire remote controller display E163 Symptom EEPROM option setting error Failure Option error Input the right option to EEPROM PCB Is the error mode disappear ? Replace the PCB and restart the unit The indoor unit work normaly 4-12 Samsung Electronics...

  • Page 43: Terminal Block's Terminal Fuse(Open)

    Remove the wire connector from the PCB and measure the resistance between two terminals Is the resistance 0Ω ? Replace the Terminal Block and restart the unit Replace the PCB and restart the unit Samsung Electronics 4-13...

  • Page 44: Communication Error After Finishing Tracking (E202)

    If the communication still doesn’t work, indoor unit PCB and outdoor unit PCB in order of mention. Good +0.7V -0.7V cf.) If there is no oscillo scope, it can be replaced multimeter instead of osillo scope. 4-14 Samsung Electronics...

  • Page 45: Outdoor's Service Valve(Clog)

    Wire remote controller display E422 Symptom Clogging of outdoor's service valve Failure Valve clog Is the outdoor service Check the normal of EVA-IN Was lacking in refrigerant? valve clogged? TEMP SENSOR. Open the outdoor's service valve Refrigerant Charge. Samsung Electronics 4-15...

  • Page 46: No Power(Completely Dead) - Initial Diagnosis

    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. 4-16 Samsung Electronics...
  • Page 47 Outdoor unit is not powered on – Initial diagnosis (1phase) (cont.) Cont. Is the reactor connector Connect the reactor connected correctly? Replace the PBA. Samsung Electronics 4-17...
  • Page 48 Replace the PCB of the indoor unit if the PCB (Transformer, fuse, pcd, etc.) fails voltage (V1-V2) 12Vdc? Does the air conditioner operate when pressing ON/OFF button of the Replace the wired remote controller wired remote controller? Cont. 4-18 Samsung Electronics...
  • Page 49 Are the option DIP switches Reconfigure the option DIP switches inside the wired remote controller configured correctly? Is there an error Check the system depending message displayed on the wired remote on the error display controller display? Check the target temperature Samsung Electronics 4-19...

  • Page 50: E102 : Communication Error Between Indoor And Outdoor Unit

    Is the communication error Terminate the service. occurred again? Isn't the power cable and Correct the wrong wiring. communication cable wiring error? Is the connection of Correct the connection of communication cable normal? communication cable. Replace the outdoor unit PCB. 4-20 Samsung Electronics...

  • Page 51: External Sensor Error (Error Code: E221, E231, E251, E320)

    After confirming the state is normal, Does the same error occur again end the service. after power is on? Replace the outdoor unit PBA. → Power is on. → After confirming the state is normal, end the service. Samsung Electronics 4-21...

  • Page 52: E403 : Freezing Control Causes Comp. Down

    The indoor FAN/MOTOR operates normally? The indoor EEV operates normally? Check the EEV. The indoor heat Exchanger sensor displays the Same as when checking other temp sensors. temperature ok? Check for clogging in the suction area of the indoor machine. 4-22 Samsung Electronics...

  • Page 53: E416 : Dischage Temperature Sensor Error

    Test operation Connect S-net to vacuum. (Forceful) All the sub valves open? Open the sub valve. The outdoor/indoor EEV operates normally? Check the EEV. Clogging in the pipeline? Check the pipeline. (ex-filter) Check the amount of coolant. Samsung Electronics 4-23...

  • Page 54: E440, E441 : Abnormal Outside Temperature Halts Operation Of The Compressor

    When the product malfunctions, if the actual situation does not match the above diagnosis, measure the temperature of incoming air with S-net to see if the measurement is the same as the actual outdoor temperature. If not, replace the temperature sensor. 4-24 Samsung Electronics...

  • Page 55: Outdoor Unit Bldc Fan1 Or Fan2 Error (E458 : Fan1 Error, E475 : Fan2 Error)

    4) Is the resistance value of sensor connection pull_up correct? 2. Troubleshooting procedure Remove the Fan lock. Isn't the Fan locked? Is the connector connected correctly? Connect the connector. Is the color of Fan wire matched correctly? Replace the Fan. Replace the PCB. Normal operation Exit Samsung Electronics 4-25...

  • Page 56: E461: Compressor Start Error

    Is the interphase resistance value of Replace the compressor. compressor(u↔v, v↔w, w↔u) normal? Is the compressor body and Replace the compressor. interphase resistance insulated? Is the connection cable for the Correct the cable connection. compressor and power terminal normal? Replace the PCB. 4-26 Samsung Electronics...

  • Page 57: E462 : Current Protection Control Causes Comp. Down

    E484 : PFC overload error Outdoor unit display E462,E484 • The outdoor machine input current above I_Trip. Criteria •Check the compressor input voltage. (error for low voltage.) Cause of problem •Check the overcurrent option setting. How to check Compressor input voltage supplied ok? Check the input power terminal. Overcurrent option setting ok? Correct the overcurrent setting. Finished inspections Samsung Electronics 4-27...

  • Page 58: E463 : Olp Protection Control Caused Comp. Down

    Test operation Connect S-net to vacuum. (forceful) All the sub valves open? Open the sub valve. The outdoor/indoor EEV operates normally? Check the EEV. Clogging in the pipeline? Check the pipeline. (ex-filter) Check the amount of coolant. 4-28 Samsung Electronics...

  • Page 59: E464 : O.c. (Over Current) Error

    Is insuration resistance between each Replace the compressor compressor terminal and body normal? Does the compressor rotate normally? Replace the compressor Did AC power voltage interruption happen Check AC power source during the compressor in operation? Replace INVERTER PCB Samsung Electronics 4-29...

  • Page 60: E466: Dc Link Over Voltage/ Low Voltage Error

    Is each contact resistance normal? Replace M/C (less than 0.1ohm) Does the error reappear frequently Replace INVERTER PCB The cause of this error may be power source trou- ble as like power interruption. Check the power source. 4-30 Samsung Electronics...

  • Page 61: Pipe Blocking Error (Error Code: E422)

    After that, the refrigerant leakage. recharge. Check the temperature value through Check the fault in the indoor unit EVA S-NET, etc. and then if there is a fault, replace sensor and the connection state. and reconnect. Samsung Electronics 4-31...

  • Page 62: The Others

    7. Outdoor overload protection control (at the stop of the compressor.) : E404 • Check whether the fan and the motor operate normally. • Check the operation of EEV. • Check the temperature sensor of the indoor unit heat Exchanger. • Check the indoor unit inlet blocking. 4-32 Samsung Electronics...

  • Page 63: Setting Option Setup Method

    You can only check the indoor unit option code in Slave wired remote controller. • Setting indoor unit option code is possible when one indoor unit is connected. If more than 2 indoor units are connected, you can only check the Master indoor unit option code. Samsung Electronics 4-33...

  • Page 64: Setting An Indoor Unit Address And Installation Option

    NOTE • Address will not be applied if you don't press button. • Setting Main/RMC Address of an Indoor unit is available only with a master wired remote controller. 4-34 Samsung Electronics...
  • Page 65 RESERVED RESERVED SEG13 SEG14 SEG15 SEG16 SEG17 SEG18 External control Number of hours External control S-Plasma ion Buzzer output using filter SEG19 SEG20 SEG21 SEG22 SEG23 Individual control Heating setting of a remote RESERVED RESERVED compensation controller Samsung Electronics 4-35...
  • Page 66 • Setting Installation option code is available only with a master wired remote controller. • Setting Installation option code is available when there is one on one connection between a wired remote controller and an indoor unit. 4-36 Samsung Electronics...
  • Page 67 If the external static pressure is high so that the duct becomes longer or if the external static pressure is low so that the duct becomes shorter, adjust the fan speed by referring the following table. Model AC052MNMSEH/EU AC071MNMSEH/EU Static Pressure...
  • Page 68 0 : No Use 1 : +1 Step 2 : +2 Step • Press the button anytime during setup to exit without setting. NOTE • According to airflow changed from the Easy Tuning,Air conditioning performance reducing is possible. 4-38 Samsung Electronics...

  • Page 69: Items To Be Checked First

    The compressor operates in a reverse cycle to remove Indoor fan and outdoor fan stop operation intermittently exterior ice in a HEAT mode, and indoor fan and outdoor in a HEAT mode. fan do not operate intermittently for within 20% of the total heater operation Samsung Electronics 4-39...
  • Page 70 4-40 Samsung Electronics...

  • Page 71: Pcb Diagram And Parts List

    5. PCB Diagram and Part List 5-1 INDOOR UNIT MAIN PBA AC052MNMSEH / AC071MNMSEH / AC100MNMSEH / AC120MNMSEH Part Code Local Function Description 3711-003942 CN140 Fuse Check SMW200-02P WHT 3711-000203 CN906 BLDC POWER YW396-03AV WHT 3711-003407 CN702 Comp Signal YW396-03AV RED...
  • Page 72 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 73 TEMP SENSOR :SMW200-08P WHT DRED :SMW250-05 WHT SUB PBA :SMW200-10P WHT SUB PBA :SMW200-10P BLK EEV1 :SMW250-05 RED SMPS :SMW250-03 BLU EEPROM :B7P-MQ WHT MAIN DOWNLOAD :YDW200-20 BLK BLDC FAN MOTOR :YAW396-06V WHT ENABLE CGND :SMW250-03 RED INV DOWNLOAD :YDAW200-20TR BLK Samsung Electronics...
  • Page 74 LOW PRESSURE S/W B04B-XAPK-1 BLUE 3711-001038 CN305 HEADER-BOARD TO CABLE BOX,6P,1R,2.5mm,STRAIGHT,SN,WHT,5.8x17.4x7 3711-000939 CN801 HEADER-BOARD TO CABLE BOX,4P,1R,2.5mm,STRAIGHT,SN,RED 3711-000176 CN12 HEADER-BOARD TO CABLE 1WALL,2P,1R,3.96mm,STRAIGHT,SN,BLU 3711-000997 CN803 CONNECTOR-HEADER BOX,5P,1R,2.5mm,STRAIGHT,SN,BLU 3711-001036 CN802 HEADER-BOARD TO CABLE BOX,6P,1R,2.5mm,STRAIGHT,SN,BLU 3711-001084 CN403 HEADER-BOARD TO CABLE BOX,8P,1R,2.5mm,STRAIGHT,SN,WHT,5.8x22.4x7 Samsung Electronics...
  • Page 75 #2 : COMP. V-phase(BLU) #3 : GND #3 : GND #3 : COMP. U-phase(YEL) #4 : DC 15V #4 : DC 15V #5 : FAN RPM #5 : FAN RPM #6 : FAN RPM feedback #6 : FAN RPM feedback Samsung Electronics...
  • Page 76 2.CN502 MAIN-SUB SIGNAL 3.OPT1 4.CN518 DC POWER 5.CN511 6.CN01 SOLUTION #1~7 7SEG1~7 KIN4 #1 12V #1 12V #1 + #8~10 KIN1~3 #2~5 F_GRID1~4 #2 GND #2 GND #2 - SOLUTION_ENABLE #3 VCC SOLUTION_TXD #4 N/A #8~9 SOLUTION_RXD #5 N/A Samsung Electronics...
  • Page 77 AC100MXASEH ■ ① ② ③ L1-AC POWER L phase N1-AC POWER N phase CN01-AC POWER L1 : BRN N1 : SKY-BLU #1-#3 : AC 220~240V Samsung Electronics...

  • Page 78: Indoor Unit

    6. Wiring Diagram 6-1 Indoor Unit AC052MNMSEH / AC071MNMSEH / AC100MNMSEH/ AC120MNMSEH This Document can not be used without Samsung’s authorization. Samsung Electronics...

  • Page 79: Outdoor Unit

    6-2 Outdoor Unit AC052MXASEH This Document can not be used without Samsung’s authorization. Samsung Electronics...
  • Page 80 AC071MXASEH Samsung Electronics...
  • Page 81 AC100MXASEH This Document can not be used without Samsung’s authorization. Samsung Electronics...

  • Page 82: Reference Sheet

    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 compres- sor will overload the compressor.) Samsung Electronics...

  • Page 83: Index For Model Name

    ->4Way : 4 , MSP Duct : DUCT (In/ STANDARD+GENERAL M , Ceiling : C Temp.+NON MODULE CEILING out) STANDARD CONSOLE DELUXE + TROPICAL FLOOR MOUNTING ※ / can be removed from the buyer card if there are not enough digits. Samsung Electronics...
  • Page 84 © Samsung Electronics Co., Ltd Dec. 2016. This Service Manual is a property of Samsung Electronics Co., Ltd. Any unauthorized use of Manual can be punished under applicable Printed in China. International and/or domestic law. Code No. DB68-00000A (1)

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