Samsung AC052MNCDKH Service Manual

Samsung AC052MNCDKH Service Manual

System air conditioner ceiling series

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AIR CONDITIONER
AC052MXADKH
SYSTEM AIR CONDITIONER
Model :
AC052MNCDKH
AC071MNCDKH
AC100MNCDKH
AC120MNCDKH
AC140MNCDKH
AC071MXADKH
CEILING SERIES
INDOOR UNIT
AC052MNCDKH
AC071MNCDKH
AC100MNCDKH
AC120MNCDKH
AC140MNCDKH
CONTENTS
1. Precautions
2. Product Specifications
3. Disassembly and Reassembly
4. Troubleshooting
5. PCB Diagram
6. Wiring Diagram
7. Reference Sheet
OUTDOOR UNIT
AC052MXADKH
AC071MXADKH

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Summary of Contents for Samsung AC052MNCDKH

  • Page 1 SYSTEM AIR CONDITIONER CEILING SERIES INDOOR UNIT OUTDOOR UNIT AC052MNCDKH AC052MXADKH Model : AC071MNCDKH AC071MXADKH AC100MNCDKH AC120MNCDKH AC140MNCDKH AIR CONDITIONER CONTENTS 1. Precautions AC052MNCDKH 2. Product Specifications AC071MNCDKH 3. Disassembly and Reassembly 4. Troubleshooting AC100MNCDKH AC120MNCDKH 5. PCB Diagram AC140MNCDKH 6.
  • Page 2: Table Of Contents

    5. PCB Diagram and Parts List................5-1 5-1 Indoor Unit ................................5-2 Outdoor Unit ................................. 6. Wiring Diagram ....................6-1 6-1 Indoor Unit ................................6-2 Outdoor Unit ................................. 7. Reference Sheet ....................7-1 7-1 Index for Model Name ............................7-2 Refrigerating Cycle Diagram .......................... Samsung Electronics...
  • Page 3: 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 4: 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 5: Product Specifications

     L ong Lasting Outdoor Unit Anti Corrosion Cabinet & Heat Exchanger are applied.  F ree Installation 4 directions piping installation are possible.  V arious useful functions Long piping : Max.30m  Eco-friendly Product (Lead-Free, RoHS, WEEE) Samsung Electronics...
  • Page 6: Product Specifications

    2-2 Product Specifications AC052MNCDKH AC071MNCDKH ITEM AC052MXADKH AC071MXADKH Indoor Unit IMAGE Outdoor Unit Remote Controller Power Product 1Φ, 220~240V, 50Hz 1Φ, 220~240V, 50Hz Indoor L x H x D mm(Net) 1000*650*200 1000*650*200 Outdoor L x H x D mm(Net) 880*310*638...
  • Page 7 In case of strongest air Heating) Outdoor unit 58/60 58/60 blow Refrigerant (R-410A) 3,000 3,000 Liquid 9.52 9.52 Connecting Pipe 15.88 15.88 Additional Refrigerant (R-410A) Standard Extension length(Total) Extension length(Elevation) Product Option 01D07C-1C5439-276470-370040 01D07C-1C5439-276470-370040 Option Code Installation Option 020000-100000-200000-300000 020000-100000-200000-300000 Samsung Electronics...
  • Page 8 In case of strongest air Heating) Outdoor unit 60/64 60/64 blow Refrigerant (R-410A) 3,000 3,000 Liquid 9.52 9.52 Connecting Pipe 15.88 15.88 Additional Refrigerant (R-410A) Standard Extension length(Total) Extension length(Elevation) Product Option 01D07C-1C247A-277882-370040 01D07C-1C247A-277882-370040 Option Code Installation Option 020000-100000-200000-300000 020000-100000-200000-300000 Samsung Electronics...
  • Page 9 In case of strongest air Heating) Outdoor unit 60/62 60/62 blow Refrigerant (R-410A) 3,400 3,400 Liquid 9.52 9.52 Connecting Pipe 15.88 15.88 Additional Refrigerant (R-410A) Standard Extension length(Total) Extension length(Elevation) Product Option 01D07C-1C54BE-278CA0-370045 01D07C-1C54BE-278CA0-370045 Option Code Installation Option 020000-100000-200000-300000 020000-100000-200000-300000 Samsung Electronics...
  • Page 10 DB61-01351A PLATE WALL Remote Control DB93-15882F Remote Control Holder DB61-06087A Indoor Unit (AC052/071MNCDKH) Batteries for Remote Control 4301-000121 M4 x 16 Tapped Screws 6002-000234 CARD WARRNATY DB68-02596B DB73-20134A RUBBER LEG DRAIN PLUG DB67-20011A Outdoor unit DB98-34367A INSTALLATION MANUAL Samsung Electronics...
  • Page 11 USER MANUAL DB68-06497A DB68-06498A INSTALLATION MANUAL Insulation DB62-04318S Insu DRAIN HOSE DB62-11028A INSU HOSE D DB62-11028E Indoor Unit (AC100/120/140MNCDKH) INSU TUBE OUT DB62-11028F ASSY DRAIN HOSE JOINT DB67-01191A Ass'y Drain Hose Joint DB90-06701A GROMMET-HANGER DB63-00237A CARD WARRNATY DB68-02596B Samsung Electronics...
  • Page 12: 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 13: Indoor Unit

    3-1 Indoor Unit ■ AC052MNCDKH/AC071MNCDKH Samsung Electronics...
  • Page 21 3 10...
  • Page 22 Box by removing 2 screws 5)Open the cover of Terminal 5)Open the cover of Terminal block Box by removing 2 screws block Box by removing 2 screws Samsung Electronics Samsung Electronics Samsung Electronics Samsung Electronics Samsung Electronics Samsung Electronics...
  • Page 23 AC040JBCDBD : 1EA AC060HBCDBD/ AC060JBCDBD : 2EA ) AC060HBCDBD/ AC060JBCDBD AC040JBCDBD : 1EA AC060HBCDBD/ AC060JBCDBD : 2EA ) : 2EA ) AC060HBCDBD/ AC060JBCDBD : 2EA ) : 2EA ) Samsung Electronics Samsung Electronics Samsung Electronics Samsung Electronics Samsung Electronics 3-12 Samsung Electronics...
  • Page 24 Samsung Electronics Samsung Electronics when installer remove drain pan, the water in drian pan can be poured.
  • Page 25 Holder blade. 1) Remove 4 screws at both side of the Holder blade. of the Holder blade. 1) Remove 4 screws at both side of the Holder blade. Samsung Electronics Samsung Electronics Samsung Electronics Samsung Electronics 3-14 Samsung Electronics...
  • Page 26: Outdoor Unit

    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. Samsung Electronics 3-15...
  • Page 27 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. 3-16 Samsung Electronics...
  • Page 28 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 Samsung Electronics 3-17...
  • Page 29 Parts Procedure Remark 3) Loosen 2 screws , disassemble the Coil Harmonic. 4) Loosen the screw of the cover terminal. 3-18 Samsung Electronics...
  • Page 30 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. Samsung Electronics 3-19...
  • Page 31 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. 3-20 Samsung Electronics...
  • Page 32 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. Samsung Electronics 3-21...
  • Page 33 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. 3-22 Samsung Electronics...
  • Page 34 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. Samsung Electronics 3-23...
  • Page 35: 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 36 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 37 (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 38 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 39 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 40 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 41 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 42 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 43 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 44: Indoor Display Error And Check Method

    : Blinking, X : Off • If you turn off the air conditioner when the LED is flickering, the LED is also turned off. • If you re-operate the air conditioner, it operates normally at first, then detects an error again. 4-10 Samsung Electronics...
  • Page 45 • If the LED displays only one color, it is turned on for a second and turned off for a second. • If the LED displays more than two colors, each color is shown for a second alternately. Samsung Electronics 4-11...
  • Page 46: Wired Remote Control

    Blockage detected on high pressure pipe E425 Reverse phase or open phase Heating operation restricted at outdoor temperature over Theat_high value (default: E440 30 °C) Cooling operation restricted at outdoor temperature below Tcool_low value (default: E441 0 °C) E458 Fan speed error 4-12 Samsung Electronics...
  • Page 47: 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 4-13...
  • Page 48 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 4-14 Samsung Electronics...
  • Page 49: Troubleshooting By Symptoms

    In this case, is the resistance 18.00 ±3% value out of range in the temperature table on the right? 22.00 ±3% 28.30 ±3% Indoor temperature sensor 33.90 ±3% failure (replace) 42.30 ±3% Restart the system after replacing the PCB Samsung Electronics 4-15...
  • Page 50 In this case, is the resistance 17.95 ±3% value out of range in the temperature table on the right? 27.27 ±3% 42.42 ±3% 67.72 ±3% EVA sensor failure (replace) 111.2 ±3% Restart the system after replacing the PCB 4-16 Samsung Electronics...
  • Page 51 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 Samsung Electronics 4-17...
  • Page 52 Replace the PCB and restart the unit Check the stuck by external substance Is there E154 after above 6 minute? and remove it. Replace the Motor or PCB and restart the unit Replace the PCB and restart the unit 4-18 Samsung Electronics...
  • Page 53: Eeprom Error

    MAIN PCB?(CN201) 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 PCB and restart the unit The indoor unit work normaly Samsung Electronics 4-19...
  • Page 54 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 4-20 Samsung Electronics...
  • Page 55 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 4-21...
  • Page 56 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. 4-22 Samsung Electronics...
  • Page 57 4-4-9 Outdoor's service valve(Clog) Wire remote controller display E422 Symptom Clogging of outdoor's service valve Failure Valve clog Is the outdoor service valve clogged? Open the outdoor's service valve Replace the PCB and restart the unit Samsung Electronics 4-23...
  • Page 58 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. 4-24 Samsung Electronics...
  • Page 59 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 4-25...
  • Page 60 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. 4-26 Samsung Electronics...
  • Page 61 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 4-27...
  • Page 62 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. Exchange the outdoor unit PCB. 4-28 Samsung Electronics...
  • Page 63 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 4-29...
  • Page 64 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. 4-30 Samsung Electronics...
  • Page 65 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 4-31...
  • Page 66 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. 4-32 Samsung Electronics...
  • Page 67 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? Exchange the Fan. Exchange the PCB. Normal operation Exit Samsung Electronics 4-33...
  • Page 68 Is the interphase resistance value of Exchange the compressor. compressor(u↔v, v↔w, w↔u) normal? Is the compressor body and Exchange the compressor. interphase resistance insulated? Is the connection cable for the Correct the cable connection. compressor and power terminal normal? Exchange the PCB. 4-34 Samsung Electronics...
  • Page 69 E484 : PFC overload error Outdoor unit display E462,E484 Criteria • The outdoor machine input current above I_Trip. •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 4-35...
  • Page 70 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. 4-36 Samsung Electronics...
  • Page 71 Is insuration resistance between each Exchange the compressor compressor terminal and body normal? Does the compressor rotate normally? Exchange the compressor Did AC power voltage interruption happen Check AC power source during the compressor in operation? Exchange INVERTER PCB Samsung Electronics 4-37...
  • Page 72 Is each contact resistance normal? Exchange M/C (less than 0.1ohm) Does the error reappear frequently Exchange INVERTER PCB The cause of this error may be power source trou- ble as like power interruption. Check the power source. 4-38 Samsung Electronics...
  • Page 73 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 4-39...
  • Page 74 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. 4-40 Samsung Electronics...
  • Page 75: Pcb Diagram And Parts List

    5. PCB Diagram and Parts List 5-1 Indoor Unit MAIN PCB AC052MNCDKH / AC071MNCDKH 13 14 9 10 TB101 INPUT POWER CN101 YDW236-01(WHT) CN701 BLDC FAN MOTOR YW396-06V(WHT) CN140 FUSE CHECK SMW200-02(WHT) CN809 AUTO GRILLE SMW200-05(BLK) CN501 DISPLAY SMY200-13(WHT) CN301...
  • Page 76: Main Pcb

    3711-000796 CN83 SMW250-02(RED) ON/OFF EXTERNAL SIGNAL 3711-000744 TDW236-01(WHT) ERROR CHECK/COMP CHECK 3711-002001 CN301 YDW200-20(BLK) SPI MODULE 3711-007817 CN201 B7P-MQ(WHT) COM1/COM2 3711-004773 CN311 BMW200-12(WHT) DOWNLOAD 3711-005097 CN601 SMW200-05(BLU) POWER INPUT 3711-001037 CN302 SMW250-06(RED) DISPLAY 3711-000941 CN801 SMW250-04(YEL) FUSE BLOCK Samsung Electronics...
  • Page 77 CN412 SMW250-02(WHT) ROOM-TEMP 3711-004236 CN413 SMW200-06(NTR) EEPROM PBA SMW200-06P WHT #1 - EVA IN SIGNAL #3 - EVA OUT SIGNAL 3711-004236 CN413 EVA DIS/OUT SENSOR #5 - DISCHARGE SIGNAL #2,4,6 - GND #1 - L, #3 - N Samsung Electronics...
  • Page 78: Outdoor Unit

    5-2 Outdoor Unit MAIN PCB  AC052MXADKH 11 12 Samsung Electronics...
  • Page 79 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 80 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 81 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 82: Wiring Diagram

    6. Wiring Diagram 6-1 Indoor Unit ■ AC052MNCDKH / AC071MNCDKH This Document can not be used without Samsung’s authorization. Samsung Electronics...
  • Page 83 ■ AC100MNCDKH / AC120MNCDKH / AC140MNCDKH This Document can not be used without Samsung’s authorization. Samsung Electronics...
  • Page 84: Outdoor Unit

    6-2 Outdoor unit  AC052MXADKH / AC071MXADKH This Document can not be used without Samsung’s authorization. Samsung Electronics...
  • Page 85: Reference Sheet

    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 86: 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 compressor will overload the compressor.) Samsung Electronics...
  • Page 87 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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