Samsung AC018JNHDCH/AA Service Manual
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Samsung AC018JNHDCH/AA Service Manual

Samsung ac018jnhdch/aa; ac018jxadch/aa; ac024jnhdch/aa; ac024jxadch/aa; ac030jnhdch/aa; ac030jxadch/aa; ac036jnhdch/aa; ac036jxadch/aa; ac042jnhdch/aa; ac042jxadch/aa; ac048jnhdch/aa; ac048jxadch/aa system air conditioners
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AIR CONDITIONER
AC018JNHDCH/AA
AC030JNHDCH/AA
AC024JNHDCH/AA
AC036JNHDCH/AA
AC042JNHDCH/AA
AC048JNHDCH/AA
AC018JXADCH/AA
AC024JXADCH/AA
AC030JXADCH/AA
SYSTEM AIR CONDITIONER
Model :
1. Precautions
2. Product Specifi cations

3. Disassembly and Reassembly

4. Troubleshooting

5. PCB Diagram

6. Wiring Diagram

7. Reference Sheet

AC036JXADCH/AA
AC042JXADCH/AA
AC048JXADCH/AA
MA DUCT SERIES
INDOOR UNIT
OUTDOOR UNIT
AC018JNHDCH/AA
AC018JXADCH/AA
AC024JNHDCH/AA
AC024JXADCH/AA
AC030JNHDCH/AA
AC030JXADCH/AA
AC036JNHDCH/AA
AC036JXADCH/AA
AC042JNHDCH/AA
AC042JXADCH/AA
AC048JNHDCH/AA
AC048JXADCH/AA
CONTENTS

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Summary of Contents for Samsung AC018JNHDCH/AA

  • Page 1: Disassembly And Reassembly

    SYSTEM AIR CONDITIONER MA DUCT SERIES INDOOR UNIT OUTDOOR UNIT Model : AC018JNHDCH/AA AC018JXADCH/AA AC024JNHDCH/AA AC024JXADCH/AA AC030JNHDCH/AA AC030JXADCH/AA AC036JNHDCH/AA AC036JXADCH/AA AC042JNHDCH/AA AC042JXADCH/AA AC048JNHDCH/AA AC048JXADCH/AA AIR CONDITIONER CONTENTS 1. Precautions 2. Product Specifi cations AC018JNHDCH/AA AC030JNHDCH/AA 3. Disassembly and Reassembly AC024JNHDCH/AA...

  • 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: 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 4: 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 5: Product Specifications

    In case of strongest air Outdoor unit blow Refrigerant (R410A) 1300(charged for 7.5m) 2100(charged for 7.5m) Liquid 1/4"(6.35) 1/4"(6.35) Connecting Pipe 1/2"(12.7) 5/8"(15.88) Additional Refrigerant (R410A) Standard Extension length(Total) Extension length(Elevation) Product Option 01C0EC-1C8424-27343B-370005 01C0EC-1C747C-274750-370005 Option Code Installation Option 020000-120000-200000-300000 020000-120000-200000-300000 Samsung Electronics...
  • Page 6 In case of strongest air Outdoor unit blow Refrigerant (R410A) 2600(charged for 7.5m) 2800(charged for 7.5m) Liquid 3/8"(9.52) 3/8"(9.52) Connecting Pipe 5/8"(15.88) 5/8"(15.88) Additional Refrigerant (R410A) Standard Extension length(Total) Extension length(Elevation) Product Option 0100EC-1A55D4-275A64-370005 0100EC-1A5902-276470-370005 Option Code Installation Option 020000-120000-200000-300000 020000-120000-200000-300000 Samsung Electronics...
  • Page 7 In case of strongest air Outdoor unit blow Refrigerant (R410A) 2800(charged for 7.5m) 2800(charged for 7.5m) Liquid 3/8"(9.52) 3/8"(9.52) Connecting Pipe 5/8"(15.88) 5/8"(15.88) Additional Refrigerant (R410A) Standard Extension length(Total) Extension length(Elevation) Product Option 0100EC-1A194D-277D8C-370005 0100EC-1A1A81-278CA0-370005 Option Code Installation Option 020000-120000-200000-300000 020000-120000-200000-300000 Samsung Electronics...

  • Page 8: Accessory

    DB62-11028E INSU TUBE OUT DB62-11028F Essential Offer (Indoor Unit) ASSY DRAIN HOSE JOINT DB67-01191A Ass'y Drain Hose Joint DB90-06701A GROMMET-HANGER DB63-00237A FILTER-PRE DB63-01299B FILTER-PRE DB63-01299A Cap Drain DB63-10355C Essential Offer Drain Plug DB67-00806A (Outdoor Unit) Rubber Leg DB73-20134A Samsung Electronics...

  • Page 9: 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 10: Indoor Unit

    Assy fan parts 1)Disassemble the Cabinet-blower -Unscrew 19 screws 2)Disassemble the Partition-front from Partition - Unscrew 8 screws 3)Rotate the assy fan parts in CCW direction. 4)Pull out the assy fan parts after hang at the edge of cabinet Samsung Electronics...
  • Page 11 Drain Pan 1)Disassemble the cabinet-drain -Unscrew 7 screws 2)Disassemble the Drain pan - Unscrew 4 screws. Drain pump 1)Disassemble the drain pump kit from the set. - Unscrew 2 screws 2)Disassemble the drian pump case. - Unscrew 4 screws. Samsung Electronics...
  • Page 12 Parts Procedure Remark Drain pump 3)Disassemble the drian pump. - Unscrew 2 screws and cabel tie. Evaporator 1)Disassemble the Cover-pipe -Unscrew 5 screws 2)Disassemble the Evaporator -Unscrew 4 screws Samsung Electronics...
  • Page 13 Parts Procedure Remark Main PBA 1)Disassemble the Case Control -Unscrew 3 screws 2)Disassemble the Evaporator -Unscrew 4 screws Samsung Electronics...
  • Page 14 Drain Pan 1)Disassemble the cabinet-blower -Unscrew 17 screws 2)Disassemble the cabinet-drain -Unscrew 9 screws 3)Disassemble the drain pan -Unscrew 4 screws Assy fan parts 1)Disassemle the case blower from partition. - Unscrew 10 bolts by using wrench and driver. Samsung Electronics...
  • Page 15 2)Ratate the Assy fan parts in CCW direction 3)Pull out the Assy fan parts after hang at the edge of cabinet Drain pump 1)Disassemble the drain pump kit from the set. - Unscrew 2 screws 2)Disassemble the drian pump case. - Unscrew 4 screws. Samsung Electronics...
  • Page 16 Parts Procedure Remark Drain pump 3)Disassemble the drian pump. - Unscrew 2 screws and cabel tie. Evaporator 1)Disassemble the Evaporator - Unscrew 4 screws Samsung Electronics...
  • Page 17 Parts Procedure Remark Main PBA 1)Disassemble the Case Control -Unscrew 3 screws 2)Detach all connect cable 3)Disassemble the PBA -Unscrew 1 screw Samsung Electronics...

  • Page 18: 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. 3-10 Samsung Electronics...
  • Page 19 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 3-11...
  • Page 20 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. 3-12 Samsung Electronics...
  • Page 21 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. Samsung Electronics 3-13...
  • Page 22 Parts Procedure Remark compressor 1) disconnect the compressor lead wire . 2)disassembly the felt comp sound. loosen the 3 bolts at the bottom of 3-14 Samsung Electronics...
  • Page 23 Cabinet Front RH. (Use +Screw Driver) Cabi Top 1) Unscrew and remove 9 screws on each side of the Cabinet-Top. (Use +Screw Driver) Cabi Install Front 1) Unscrew and remove 1 screw in the Cabinet-Install Front. (Use +Screw Driver) Samsung Electronics 3-15...
  • Page 24 2) Unscrew and remove 4 screws in the Guard Cond. (Use +Screw Driver) Cabi Back RH 1) Pull the sensor from Cabi Back RH. 2) Unscrew and remove 4 screws on each side of the Cabinet Back RH. (Use +Screw Driver) 3-16 Samsung Electronics...
  • Page 25 Parts Procedure Remark Cabi Install Back 1) Unscrew and remove 1 screw in the Cabinet-Install Back. (Use +Screw Driver) Cabi Front LF 1) Unscrew and remove 10 screws in the Cabinet-Front LF. (Use +Screw Driver) Samsung Electronics 3-17...
  • Page 26 Parts Procedure Remark 1) Turn 2 mounting nuts as shown in the picture and remove it. (Use Adjustable Wrench) 3-18 Samsung Electronics...
  • Page 27 1) Separate the Fan Propeller. 2) Unscrew and remove the 8 Motor mounting screws. (Use +Screw Driver) 3) Disconnect the Motor wire From Ass'y Control Out. Bracket Motor 1) Unscrew and remove 2 mounting screws in Bracket Motor. (Use +Screw Driver) Samsung Electronics 3-19...
  • Page 28 Parts Procedure Remark Control Out 1) Disconnect 4 Connecters From Ass'y Control Out. 2) Unscrew and remove 1 mounting screw in Control Out. (Use +Screw Driver) 3) Separate Ass'y Control Out. 3-20 Samsung Electronics...
  • Page 29 Service Valve. (Use +Screw Driver) 4) Separate the pipe from the Entrance/Exit using a welder. When removing the compressor, Heat Exchanger, and Pipe, purge the Coolant inside the Compressor completely and remove the pipe with a welding flame. Samsung Electronics 3-21...
  • Page 30 1) Unscrew and remove 2 mounting screws in Service Valve. (Use +Screw Driver) 2) Separate the pipe from the Entrance/Exit using a welder. Compressor 1) Unscrew and remove 1 mounting nut in Cover Terminal. (Use Adjustable Wrench) 2) Separate the Compressor Felt Sound. 3-22 Samsung Electronics...
  • Page 31 3) As shown in the picture, unscrew and remove 3 mounting screws from the bottom. (Use Adjustable Wrench) Cond Out 1) Unscrew and remove 3 screws on each side of the Assy Cond Out. (Use +Screw Driver) 2) Separate the Compressor Felt Sound. Samsung Electronics 3-23...
  • Page 32 Cabi Install Front 1) Unscrew and remove 1 screw in the Cabinet-Install Front. (Use +Screw Driver) Guard Cond 1) Pull the sensor from Guard Cond. 2) Unscrew and remove 4 screws in the Guard Cond. (Use +Screw Driver) 3-24 Samsung Electronics...
  • Page 33 Cabinet-Install Back. (Use +Screw Driver) Cabi Front LF 1) Unscrew and remove 10 screws in the Cabinet-Front LF. (Use +Screw Driver) 1) Turn 2 mounting nuts as shown in the picture and remove it. (Use Adjustable Wrench) Samsung Electronics 3-25...
  • Page 34 1) Unscrew and remove 2 mounting screws in Bracket Motor. (Use +Screw Driver) Control Out 1) Disconnect 4 Connecters From Ass'y Control Out. 2) Unscrew and remove 1 mounting screw in Control Out. (Use +Screw Driver) 3) Separate Ass'y Control Out. 3-26 Samsung Electronics...
  • Page 35 Compressor completely and remove the pipe with a welding flame. Assy EEV Valve 1) Unscrew and remove 2 mounting screws in Service Valve. (Use +Screw Driver) 2) Separate the pipe from the Entrance/ Exit using a welder. Samsung Electronics 3-27...

  • Page 36: Troubleshooting

    (Communication error for more than 2 minutes) ● Flickering X Off ◆ If you turn off the air conditioner when the LED is flickering, the LED is also turned off. Samsung Electronics...
  • Page 37 Detection of the float switch Error of setting option switches for optional accessories Error of EEPROM or OPTION SETTING ● Flickering X Off ◆ If you turn off the air conditioner when the LED is flickering, the LED is also turned off. Samsung Electronics...
  • Page 38 Open error of EEV in indoor unit(2nd) Close error of EEV in indoor unit(2nd) Close error of electoronic expansion valve in indoor unit(2nd) Breakaway of Indoor unit Evaporator_out Sensor COND_MID or COND OUT Sensor of Outdoor Unit breakaway Error Samsung Electronics...
  • Page 39 System Down (All Indoor unit Short) due to Communication Error Error due to repeated communication address Error on float switch (2nd detection) Outdoor unit EEPROM error EEPROM OPTION SETTING ERROR Error on thermal fuse of indoor unit (Open) Samsung Electronics...

  • Page 40: Troubleshooting By Symptoms

    8.300 10.00 12.10 14.70 In this case, is the resistance 18.00 value out of range in the temperature 22.00 table on the right? 28.30 33.90 Indoor temperature sensor 42.30 failure (replace) Restart the system after replacing the PCB Samsung Electronics...
  • Page 41 3.021 4.160 5.828 8.313 12.09 17.95 In this case, is the resistance value out of range in the temperature 27.27 table on the right? 42.42 67.72 EVA sensor failure (replace) 111.2 Restart the system after replacing the PCB Samsung Electronics...

  • Page 42: Fan Error

    Is the motor connector disconnected from the PCB?(CN301) 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...
  • Page 43 PCB and terminal block before restart the unit 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...
  • Page 44 X (Defrost) X (Timer) (Fan) (Filter) Wire remote controller display E422 Symptom Clogging of outdoor's service valve Valve clog Failure Is the outdoor service valve clogging? Open the outdoor's service valve Replace the PCB and restart the unit Samsung Electronics...
  • Page 45 Remove the wire connector from the PCB and measure the resistance between two terminals Is the resistance 0Ω ? Replace the float switch and restart the unit Replace the PCB and restart the unit 4-10 Samsung Electronics...

  • Page 46: Eeprom Error

    MAIN PCB?(CN201) Connect the EEPROM PCB to MAIN PCB and restart the unit Connect the EEPROM PCB to MAIN PCB Is the error mode disappear ? Replace the PCB and restart the unit The indoor unit work normaly Samsung Electronics 4-11...
  • Page 47 Wire remote controller display E163 Symptom EEPROM option setting error Option error Failure 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 48: 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 4-13...

  • Page 49: Setting An Indoor Unit Address And Installation Option

    Press the button anytime during setup to exit without setting. 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. 4-14 Samsung Electronics...
  • Page 50 Away Set OFF of a remote RESERVED compensation Timer controller SEG8 of the installation option code should be "2" when PCB is changed. (Since the indoor unit is drained by a drain pump,installation option code setting is needed.) Samsung Electronics 4-15...

  • Page 51: Samsung Electronics

    Option code will not be applied if you don't press button. 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. 4-16 Samsung Electronics...
  • Page 52 Static Pressure(inH2O) Static Pressure(mmAq) Option code for indoor unit 0.16≤P≤0.20 4≤P≤5.2 0100EC-1A194D-277D8C-370005 0100EC-1A1A81-278CA0-370005 0.20<P≤0.30 5.2<P≤7.5 0100EC-1A597E-277D8C-370005 0100EC-1A5AA2-278CA0-370005 0.30<P≤0.40 7.5<P≤10 0100EC-1A5AA1-277D8C-370005 0100EC-1A5AD4-278CA0-370005 0.40<P≤0.50 10<P≤12.5 0100EC-1A5AD3-277D8C-370005 0100EC-1A5E06-278CA0-370005 0.50<P≤0.60 12.5<P≤15 0100EC-1A5E06-277D8C-370005 0100EC-1A5E38-278CA0-370005 0.60<P≤0.70 15<P≤17.5 0100EC-1A5E38-277D8C-370005 0100EC-1A5E6A-278CA0-370005 0.70<P≤0.80 17.5<P≤20 0100EC-1A5E5A-277D8C-370005 0100EC-1A5E7D-278CA0-370005 Samsung Electronics 4-17...

  • Page 53: 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 4-18 Samsung Electronics...

  • Page 54: Indoor Unit

    3711-001037 CN302 COMM SMW250-06 RED 3711-000795 CN804 SMW250-02 BLU 3711-000941 CN801 SMW250-04 YEL 3711-001036 CN808 SMW250-06 BLU 3711-003895 CN501 DISPLAY SMW200-13P WHT 3711-000015 CN412 ROOM SENSOR SMW250-02 WHT 3711-000794 CN411 FLOAT-SW SMW250-02 BLK 3711-000796 CN83 EXT-T SMW250-02 RED Samsung Electronics...
  • Page 55 AC030JNHDCH / AC036JNHDCH / AC042JNHDCH / AC048JNHDCH Samsung Electronics...
  • Page 56 #12:VCC #13:BZ2 CN905-BLDC MOTOR CN201-E2P CN808- CN801-SPI #1~4: #1:12V #1,2:GND #5,6: 12V #2: GND #3:SPI #3: VCC #4: MOTOR SIGNAL PWM #5: MOTOR FEEDBACK #6:INRUSH OUT #12:VCC CN311-2 CN302- CN101-AC INPUT #1,2: #1: L #3:12V #2: N #4:GND Samsung Electronics...

  • Page 57: Outdoor Unit

    5-2 Outdoor Unit 5-2-1 Main PCB AC018JXADCH 11 12 Samsung Electronics...
  • Page 58 CN030 : 4WAY VALVE CN951 : SIGNAL TO SUB PCB CN252 : THERMISTOR CN851:S-NET Communication CN701 : EEV CN302:Communication(COM1) CN251 : THERMISTOR CN201 : Downloader CN901 : BLDC MOTOR CN551: Downloader CN451 : COMP POWER CN051 : Reactor Samsung Electronics...
  • Page 59 5-2-2 SUB PCB AC018JXADCH CN12 : DC12V CN951 : SIGNAL TO MAIN PCB Samsung Electronics...

  • Page 60: Main Pcb

    LOW PRESSURE S/W B04B-XARK-1 BLU 3711-001038 CN305 COMM INV SMW250-06 WHT 3711-000939 CN801 ERROR/COMP CHECK SMW250-04 RED 3711-000176 CN12 DC12V YW396-02V BLU 3711-000997 CN803 EEV1 SMW250-05 BLU 3711-001036 CN802 EEV4 SMW250-06 BLU 3711-001084 CN403 OUT TEMP/COND/DISQ/OLP SMW250-08 WHT Samsung Electronics...
  • Page 61 5-2-4 INVERTER PCB AC024JXADCH, AC030JXADCH, AC036JXADCH, AC042JXADCH, AC048JXADCH Reactor-A1/B1 Reactor-A2/B2 CN50(2PIN/RED)-Communication CN22-Downloader CN21-DAC/ENCODER CN91-FAN2 CN90-FAN1 CN71-COMP. Samsung Electronics...
  • Page 62 5-2-5 EMI PCB AC024JXADCH, AC030JXADCH, AC036JXADCH, AC042JXADCH, AC048JXADCH L1-AC POWER L phase N1-AC POWER N phase CN01-AC POWER Samsung Electronics...

  • Page 63: Wiring Diagram

    6. Wiring Diagram 6-1 Indoor Unit AC018JNHDCH / AC024JNHDCH This Document can not be used without Samsung’s authorization. Samsung Electronics...
  • Page 64 AC030JNHDCH / AC036JNHDCH / AC042JNHDCH / AC048JNHDCH This Document can not be used without Samsung’s authorization. Samsung Electronics...

  • Page 65: Outdoor Unit

    6-2 Outdoor unit AC018JXADCH This Document can not be used without Samsung’s authorization. Samsung Electronics...
  • Page 66 AC024JXADCH, AC030JXADCH, AC036JXADCH, AC042JXADCH, AC048JXADCH Samsung Electronics...

  • Page 67: Refrigerating Cycle Diagram

    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 68: Index For Model Name

    RAC-New Model HEAT PUMP R410a (Slim) HEAT RECOVERY RAC-Vivace COOLING ONLY Feature HEAT PUMP FLAGSHIP Cooling only R134A PREMIUM Heat Pump DELUXE <- Basic STANDARD "/" can be removed from the buyer card if there are not enough digits. Samsung Electronics...
  • Page 69 PREMIUM + TROPICAL HEAT RECOVERY DELUXE + TROPICA Basic Model COOLING ONLY STANDARD + TROPICAL HEAT PUMP Cooling only R134A Heat Pump MCD: Dummy mock-up model “/” can be removed from the buyer card if there are not enough digits. Samsung Electronics...
  • Page 70 This Service Manual is a property of Samsung Electronics Co., Ltd. © Samsung Electronics Co., Ltd May 2015. Any unauthorized use of Manual can be punished under applicable Printed in China. International and/or domestic law.

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