Samsung AQ09VFUAGM/CV Service Manual
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Samsung AQ09VFUAGM/CV Service Manual

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  • Page 3 good’sleep Mode good’ sleep mode can help you sleep quickly and soundly and wake up refreshed. Catech in Filter Silver Nano Evap orator Deo dorizing Filter then withclean,refreshin air...
  • Page 4 AQ09VFUAGM/CV AQ12VFUAGM/CV Model Item Indoor Unit Outdoor Unit Indoor Unit Outdoor Unit Type Wall-mounted Wall-mounted Cooling 0.821/2.638/3.312 0.821/3.517/3.986 Capacity (Low / Std / Max) ting 0.791/3.517/4.396 0.791/3.986/5.129 Cooling 20 / 48 / 63 20 / 71/ 82 Running Frequency (Low / Std / Max)
  • Page 5 AQ18VFUAGM/CV AQ24VFUAGM/CV Model Item Indoor Unit Outdoor Unit Indoor Unit Outdoor Unit Type Wall-mounted Wall-mounted Cooling 1.29/5.27/6.15 1.29/7.03/7.91 Capacity (Low / Std / Max) i t a . 0.82/6.00/7.47 1.67/7.91/9.96 Cooling 15 / 72 / 82 15 / 76 / 88 Running Frequency (Low / Std / Max) i t a...
  • Page 6 (std)
  • Page 7 2-3 The Comparative Speciactions of Product Development Model Development Model Item AQ09VFUAGM/CV AQ12VFUAGM/CV I ndoor Unit Design Outdoor Unit Indoor Unit 8.2Kg 8.2Kg Net Weight Outdoor Unit 30.5Kg 30.5Kg Indoor Unit 880*360*260 880*360*260 Outer Dimension (WidthxHei ghtx Depth) Outdoor Unit...
  • Page 8 Indoor Unit 1125*375*290 1125*375*290 Outer Dimension (WidthxHeightxDepth) Outdoor Unit 926*640*384 1023*413*925 Indoor Unit 48dB 48dB Noise Outdoor Unit 58dB 58dB Air Purify System Evaporator Catechin Filter Filter Evaporator Catechin Filter Indoor Display l p s l p s Samsung Electronics...
  • Page 9 Indoor Unit 18.2kg Net Weight 87.0kg Outdoor Unit ³ 1352*420*326 Indoor Unit Outer Dimension (WidthxHeightxDepth) Outdoor Unit ³ 1095*476*1285 Indoor Unit Noise Outdoor Unit Filter Evaporator Catechin Filter Air Purifying System Three Color LED Display Indoor Display Samsung Electronics 2- 3...
  • Page 10 DB97-02851C [AQN09VFUAGM/CV] [AQN12VFUAGM/CV] Assy Plate-Hanger DB90-02738A [AQN18VFUAGM/CV] [AQN24VFUAGM/CV] DB70-00787A [AQV36VFUAGM/CV] DB93-11115Y [AQN09VFUAGM/CV] Remote Control [AQN12VFUAGM/CV] [AQN18VFUAGM/CV] [AQN24VFUAGM/CV] [AQN36VFUAGM/CV] Indoor Unit DB47-90024A [AQN09VFUAGM/CV] [AQN12VFUAGM/CV] Batteries for Remote Control [AQN18VFUAGM/CV] [AQN24VFUAGM/CV] [AQN36VFUAGM/CV] DB98-32163A [AQN09VFUAGM/CV] [AQN12VFUAGM/CV] Manual [AQN18VFUAGM/CV] [AQN24VFUAGM/CV] [AQN36VFUAGM/CV]...
  • Page 11 DB67-20011A [AQX09VFUAGM/CV] [AQX12VFUAGM/CV] [AQX18VFUAGM/CV] [AQX24VFUAGM/CV] DB67-00477A [AQX36VFUAGM/CV] DB73-20134A [AQX09VFUAGM/CV] [AQX12VFUAGM/CV] [AQX18VFUAGM/CV] [AQX24VFUAGM/CV]...
  • Page 14 AQX09/12/18/24VFUAGM/CV...
  • Page 15 AQX36VFUAGM/CV...

  • Page 16: Setting Option Setup Method

    3-3 Setting Option Setup Method SEG1 SEG2 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 SEG13 SEG17 SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 SEG24 SEG25 SEG26 SEG27 SEG28 SEG29 SEG30 SEG31 SEG32 SEG33 SEG34 SEG35 SEG36 Samsung Electronics...
  • Page 17 3-3 Setting Option Setup Method(continue) Samsung Electronics...
  • Page 18 AQ-09VFUAGM/CV 011425-17421D- 034044-113047 271A23-372520 200000-300000 AQ-12VFUAGM/CV 011425-17423D- 034B4D-114753 272328-372520 200000-300000 AQ-18VFUAGM/CV 012425-17423E- 034947-11484C 27343C-37F620 200000-300000 AQ-24VFUAGM/CV 012425-18428C- 034F52-104C4C 27444E-37F320 200000-300000 AQ-36VFUAGM/CV 01B425-17428C- 034645-113533 276063-37F520 200000-300000...

  • Page 20: Indoor Unit

    . 5) To detach the FRONT-PANELthe main frame, unfasten 2 screw at the bottom.(use + Screw Driver ) 6) Take off the FRONT-PANEL,lifting up the bottom. 4- 2 Samsung El ect r onic s...
  • Page 21 TRAY-DRAIN towards you. CONTROL IN 1) Unfasten the earth screw.(use + Screw Driver) 2) Detach COVER-CONTROL from the CASECONTROL. 3) Detach the temperature sensor. 4) Loosen MOTOR Wire. 5) Take off the CASE-CONTROL from the main frame. Samsung Electronics...
  • Page 22 Operating Instructions and Installation 1) Unfasten the screw. 2) Cut the cable tie. 3) Loosen the terminal block wires. Caution: The terminal is locking type. So, when you separate terminals, pull pressing the button. Button Samsung Electronics...
  • Page 23 6) Loosen Main Power connector. Caution: When you separate the connector, pull pressing the locking button. 7) Loosen the Thermistor wire connector Caution: When you separate the connector, pull pressing the locking button. 8) Loosen the Relay connector(Red,White). Samsung Electronics...
  • Page 24 1) Unfasten the screw at the right side. (use + Screw Driver) 2) Unfasten the screw at the left side. (use + Screw Driver) 3) Detach the HOLDER PIPE. 4) Take off the EVAPORATOR from the main frame. Samsung Electronics...
  • Page 25 2) unfasten the 3 points screws in the CASE- CONTROL, and then detach the CASE. (use + Screw Driver) 3) unfasten the screw a little.(use + Screw Driver) 4) Lift up the evaporator slightly and pull the CROSS-FAN to the left side. Samsung Electronics...
  • Page 26 Samsung Electronics...
  • Page 27 Samsung Electronics...
  • Page 28 4-10 Samsung Electronics...
  • Page 29 Samsung Electronics 4-11...
  • Page 30 4-12 Samsung Electronics...
  • Page 31 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 17 screws fixed to assemble Control Box with Cabi Back Rh. Samsung Electronics 4-13...
  • Page 32 Parts Procedure Remark 4) Loosen 4 screws fixed on cond-bar. 5) Loosen 4 screws fixed on cond-bar. 6) Loosen 13 fixing screws of the Cabi Front Lf and detach it. 4-14 Samsung Electronics...
  • Page 33 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.) Samsung Electronics 4- 1 5...
  • Page 34 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. 4-16 Samsung Electronics...
  • Page 35 1) Loosen the fixing nut and detach the Compressor Lead Wire. (Use Monkey Spanner.) 2) Disassemble the Felt Comp Sound. 3) Loosen the 3 bolts at the bottom of Compressor like the picture on the right side.(Use Monkey Spanner.) Samsung Electronics 4- 1 7...
  • Page 41 DB93-09711A MAX KCV Model AQN36VFUAGM/CV...

  • Page 42: Ass'y Control Out

    5-4 Ass'y Control Out -AQX09/12/18VFUAGM/CV AQX09VFUAGM/CV AQX18VFUAGM/CV AQX12VFUAGM/CV 5-10 Samsung Electronics...
  • Page 43 5-4 Ass'y Control Out -AQX24VFUAGM/CV Model AQX24VFUAGM/CV 5-10 Samsung Electronics...
  • Page 44 5-4 ASSY CONTROL OUT -AQX36VFUAGM/CV...
  • Page 45 Parts List( DB93-09771D) Parts Code Parts Description Spec. QT'Y SA/SNA ASSY CONNECTOR WIRE- DB93-13119A MAN U COMM(MAIN TO INV) DB59-00016A AC REACTOR-1PHASE 30A RC100PHXEA FJM,AL,10mm,187mm,200mm,COUNT- DB62-10902A HEAT SINK-1PHASE 30A SINK,45mm DB93-09902C ASSY CONTROL OUT HP,INV,CAC,LCI 4/5# CASE_PBA DB93-11110A ASSY PCB SUB-EMI ASSY, RC100SHXEC DB93-12326C ASSY MAIN PCB...
  • Page 46 AQN09/12VFUAGM/CV...
  • Page 47 AQN18/24VFUAGM/CV...
  • Page 48 AQN36VFUAGM/CV...
  • Page 49 AQX09/12/18VFUAGM/CV...
  • Page 50 AQX24VFUAGM/CV...
  • Page 51 AQX36VFUAGM/CV...
  • Page 59 13 14 LOCATION NAME SPEC CN12 DC12V YW396-02V(BLU) EARTH EARTH TAB,MALE,N,0.5/4.75mm CN31 COMM INDOOR YW396-02(RED) CN32 COMM-OPTION SMW200-05P(BLK) CN33 COMM-OPTION BH200S-2020-07G-2537(BLK) CN39 COMM-INV SMW250-06(WHT) CN45 MODE-SELECTOR SMW250-03(WHT) CN35 AS-PRO SMW200-07P(WHT) CN37 DOWNLOAD SMW200-10P(BLK) IC83 DS1001-01-08BT1NST1X(BLK) CN81 SMW250-05(BLU) CN43 OUT/COND/DISCH/OLP SMW250-08(WHT) CN75 4WAY YW396-03AV(YEL)

  • Page 60: Outdoor Emi Pcb

    -OUTDOOR EMI PCB LOCATION NAME SPEC OT-048 CN01 AC POWER YW396-03AV(WHT) OT-048 Samsung Electronics...
  • Page 61 LOCATION NAME SPEC CN01 CN01 YW396-03AV(WHT) Samsung Electronics...
  • Page 62 LOCATION NAME SPEC REACTOR-A2 REACTOR-A2 YTR250 REACTOR-B2 REACTOR-B2 YTR250 REACTOR-A1 REACTOR-A1 YTR250 REACTOR-B1 REACTOR-B1 YTR250 CN31 MAIN COMM SMW250-06(WHT) CN91 BLDC FAN2 YW396-06V(WHT) CN22 DOWNLOADER SMW200-10(RED) CN90 BLDC FAN1 YW396-06V(WHT) CN21 DAC/ENCODER SMW200-08P(WHT) CN71 RED/BLUE/YELLOW HLW1005-03(BLK) Samsung Electronics...
  • Page 63 LOCATION NAME SPEC R-IN YTR250 S-IN YTR250 T-IN YTR250 CN100 CN100 YW396-03AV(WHT) CN91 BLDC FAN2 YW396-06V(WHT) CN600 REACTOR HLW1005-02(BLK) CN90 BLDC FAN1 YW396-06V(WHT) CN31 MAIN COMM SMW250-06(WHT) CN800 U/V/W HLW1005-03(BLK) CN22 DOWNLOADER SMW200-10(RED) CN21 DAC/ENCODER SMW200-08P(WHT) Samsung Electronics...
  • Page 64 New Function [ Indoor Terminal Block Safety Device ] 1.Thermal Fuse is installed in Terminal Block as below. (Thermal Fuse is used to prevent PL caused by a defective connection of indoor and outdoor units) 2. Thermal Fuse is opened when internal temperature of Terminal Block goes to a certain point due to Tracking caused by a defective connection of indoor and outdoor units.

  • Page 65: Main Parts

    Main parts Room temperature sensor Air intake (up and down) Bl ade pin l e ver...
  • Page 67 Remote controller display Power Smart Saver Mode Less energy usage makes your space Set one of the 5 operating modes cool between the temperature range (see pages 10-11 for instructions). of 24°C~30°C. Auto Clean Turbo Auto clean function – Dry inside of the indoor Operate in auto fan speed to unit to get rid of odor.
  • Page 69 Is the power is normal? Exchange the PBA of no power unit (check the LED Lamp) Exchange the indoor unit PBA. Is the communica on error Terminate the service. occurred again? Exchange the outdoor unit PBA. 12-2 Samsung Electronics...
  • Page 70 Indoor temperature sensor error Indoor room temp sensor Indoor display error 1.Checklist : 1) Is the indoor units temperature sensor connected correctly? 2) Is the sensor placed correctly? 3) Does the both terminal of sensor satisfy the resistance value in accordance with temperature? Detach the assembled sensor from the PBA sensor 2.
  • Page 71 Indoor Eva-in temperature sensor error Indoor Eva-in temp sensor Indoor display error 1.Checklist : 1) Is the indoor units temperature sensor connected correctly? 2) Is the sensor placed correctly? 3) Does the both terminal of sensor satisfy the resistance value in accordance with temperature? Detach the assembled sensor from the PBA sensor 2.
  • Page 72 When the Up/Down louver motor does not operate (Initial Diagnosis) (Not displayed) 1.Checklist : 1) Is the input power voltage normal? 2) Is the Up/Down louver motor properly connected with the connector? (CN61) 2. Troubleshooting procedure Unplug the power cord and plug it a er 30seconds later.
  • Page 73 When the remote control is not receiving 1.Checklist : 1) Check if the connector was normally assembled. 2) Check the battery in remote control 3) All the lights out and check again : Change electronic typed to a fluorescent 4) Put the set in operation and check the voltage of display PBA 5) Replace the display PBA 12-6...
  • Page 74 Indoor fan motor speed detecting error (BLDC fan) Indoor display Indoor fan error 1.Checklist : 1) Is the indoor units fan motor properly connected with the connector(CN72)? 2) Is the AC voltage correct? 2. Troubleshooting procedure Restart a er power o . Power o and Separate the Fan motor wire from Does the fan rotate? CN72 on Indoor PBA...
  • Page 75 Outdoor temperature sensor error Indoor display Outdoor error Outdoor temperature sensor Outdoor display error 1.Checklist : 1) Is the sensor connected correctly? 2) Is the sensor placed correctly? 3) Does the both terminal of sensor satisfy the resistance value in accordance with temperature? 4) Is the resistance value of sensor connection pull-up correct? 2-1.
  • Page 76 Outdoor Coil temperature sensor error Indoor display Outdoor error Outdoor display Outdoor Coil temperature sensor error 1.Checklist : 1) Is the sensor connected correctly? 2) Is the sensor placed correctly? 3) Does the both terminal of sensor satisfy the resistance value in accordance with temperature? 4) Is the resistance value of sensor connection pull-up correct? 2-1.
  • Page 77 Outdoor Discharge temperature sensor error Indoor display Outdoor error Outdoor Discharge temperature sensor Outdoor display error 1.Checklist : 1) Is the sensor connected correctly? 2) Is the sensor placed correctly? 3) Does the both terminal of sensor satisfy the resistance value in accordance with temperature? 4) Is the resistance value of sensor connection pull-up correct? Is the sensor connector(CN251) Reconnect the sensor connector.
  • Page 78 Outdoor Discharge over temperature error Indoor display Outdoor error Outdoor Discharge over temperature Outdoor display error 1.Checklist : 1) Check the discharge temperature in the outdoor unit 2) Check the compressor locking or gas leak 3) Download the EEPROM data 2.
  • Page 79 Outdoor Fan motor error Indoor display Outdoor error Outdoor display Outdoor fan error 1.Checklist : 1) Are the input power voltage and the power connection correct? 2) Is the motor wire connected to the outdoor PBA correctly? 3) Is there no assembly error or none-assembly in the terminal of motor wire connector? 4) Is there no obstacle at the surrounding of motor and propeller? 2.
  • Page 80 Compressor starting error Indoor display Outdoor error Outdoor display Comp starting error 1.Checklist : 1) Is the connection of cable for the compressor? 2) Is the compressor wire is connected clockwise? U(RED)-V(BLU)-W(YEL) 3) Is the interphase resistance of compressor normal? 2.
  • Page 81 Compressor wire missing error/rotation error Indoor display Outdoor error Compressor wire missing error/rotation Outdoor display error 1.Checklist : 1) Is the connection of cable for the compressor? 2) Is the compressor wire is connected clockwise? U(RED)-V(BLU)-W(YEL) 3) Is the interphase resistance of compressor normal? 2.
  • Page 82 O.C(Over Current) error Indoor display Outdoor error Outdoor display Comp starting error 1.Checklist : 1) Is the IPM Shunt(A*V18***:R451,R452,R453,A*V24***:R413,R414,R415) resistance value correct? Check the resistor is opened 2) Is the condition of surrounding temperature abnormal overload? 3) Is there any problem as like the temperature sensor separation or measurement value error? 4) Is the interphase resistance of compressor normal? 2.
  • Page 83 DC_link voltage sensor error Indoor display Outdoor error Outdoor display DC_link voltage sensor error 1.Checklist : 1) Is the input voltage of outdoor terminal block is normal? 2) Is the reactor wire connected? 3) Is the DC_link capacitor(A*V18***:CE101,CE102,CE103,A*V24***:CE001,CE002,CE003,CE004)) assembled in accordance the specification? (Outdoor PBA) 4) Is the DC_link resistor(A*V18***:R104,R106,R107,R108,A*V24***:R004,R005,R006,R007) value is normal? (Outdoor PBA) 2.
  • Page 84 DC_link voltage under/over error, Over voltage protection error/PFC over load Indoor display Outdoor error DC_link voltage under/over error Outdoor display Over voltage protection error PFC over load 1.Checklist : 1) Is the input voltage of outdoor terminal block is normal? 2) Is the input voltage is higher than 300Vac? 3) Is the reactor wire connected? 3) Is the DC_link capacitor(A*V18***:CE101,CE102,CE103,A*V24***:CE001,CE002,CE003,CE004)) assembled in accordance...
  • Page 85 I_trip error, PFC over current Indoor display Outdoor error Outdoor display I_trip error, PFC over current 1.Checklist : 1) Is the PFC Shunt(A*V18***:R062,R063,A*V24***:R807,R808,R809) resistance value correct? Check the resistor is opened 2) Is the condition of surrounding temperature abnormal overload? 3) Is there any problem as like the temperature sensor separation or measurement value error? 4) Is the interphase resistance of compressor normal? 2.
  • Page 86 Current sensor error/Input current sensor error Indoor display Outdoor error Current sensor error/Input current Outdoor display sensor error 1.Checklist : 1) Is the PFC Shunt(A*V18***:R062,R063,A*V24***:R807,R808,R809) resistance value correct? Check the resistor is opened 2) Is the IPM Shunt(A*V18***:R451,R452,R453,A*V24***:R413,R414,R415) resistance value correct? Check the resistor is opened 3) Is there no short or open around IC451(A*V18***) or IC451,IC452(A*V24***)? 2.
  • Page 87 Heatsink sensor error/Heatsink over heat Indoor display Outdoor error Outdoor display Heatsink sensor error Heatsink over heat error 1.Checklist : 1) Are there screws assembly in PBA-heatsink? 2) Is the gap PBA-heatsink 3) Is the fan operation normal? 4) Is the cover assembly in conrol-box normal? 2.
  • Page 88 Comp Vlimit error/Comp current limit error Indoor display Outdoor error Comp Vlimit error/Comp current limit Outdoor display error 1.Checklist : 1) Is the IPM Shunt(A*V18***:R451,R452,R453,A*V24***:R413,R414,R415) resistance value correct? Check the resistor is opened 2) Is the condition of surrounding temperature abnormal overload? 3) Is there any problem as like the temperature sensor separation or measurement value error? 4) Is the interphase resistance of compressor normal? 2.
  • Page 89 EEPROM error/OTP error Indoor display Outdoor error Outdoor display EEPROM error OTP error 1.Checklist : 1) Is there a short around micom? 2) Is there a short around IC202(A*V18***) or IC701(A*V24***)? 3) Did you download or insert EEPROM IC, after changing outdoor PBA? power o and download EEPROM data 2.
  • Page 90 AC zero cross signal error Indoor display Outdoor error Outdoor display AC zero cross signal error 1.Checklist : 1) Check the power condition at customer's house (Is there any power noise?) 2) Have been there power failure? 2. Troubleshooting procedure Restart a er power o Is the AC line zero cross signal error Terminate the...
  • Page 91 Operation condition secession error Indoor display Outdoor error Outdoor display AC zero cross signal error 1.Checklist : 1) Check the temperature around the outdoor unit. 2. Troubleshooting procedure Restart a er power o Is the opera on condi on secession Terminate the service error appeared again? * Hea ng mode *...
  • Page 92 Capacity miss match error Indoor display Outdoor error Outdoor display Capacity miss match error 1.Checklist : 1) Check the Btu between indoor and outdoor unit 2) Check the indoor unit option and outdoor unit EEPROM data 2. Troubleshooting procedure Exchange the one of them according to the exact Is the rated Btu between indoor model spec unit and outdoor unit?
  • Page 93 Gas leak error Indoor display Outdoor error Outdoor display Gas leak error 1.Checklist : 1) Is the position of indoor Eva_in sensor normal? 2) Check the pipe crack 3) Check the EEV valve connection in Outdoor unit 4) Check the refrigerant was charged 2.
  • Page 94 No power indoor (Initial Diagnosis) (Not displayed) 1.Checklist : 1) Is input power normal? 2) Is AC power linked correctly? 3) Is input voltage of DC_link capacitor normal? 4) Is the voltage of DC regulator normal? 2. Troubleshooting procedure Unplug the power cord Is the power cable from outdoor is Reconnect the power cord correctly.

  • Page 95: Outdoor Unit

    Check Outdoor Inverter PBA E500 IPM is over heated. Check Outdoor Inverter PBA E554 GAS Leak error Check indoor and outdoor unit model E556 Capacity miss match between indoor and outdoor Check indoor and outdoor unit model 12-32 Samsung Electronics...

  • Page 96: Fault Diagnosis By Symptom

    Wrong setting Check DIP SW in the Set DIP SW correctly wired remote controller. Correct Is there any error display on Check each item according to error code list the wired remote controller Check the setting temperature 12-33 Samsung Electronics...

  • Page 97: The Outdoor Unit Power Supply Error

    #1 and #3 Are wire and socket connected correctly? Error 469 display Error 469 display CN05,06,07 TAB terminal(EMI PCB), Check and correct the wiring CN20(INVERTER PCB) (Table No.19) (Table No.19) Check the M/C Samsung Electronics 12-34...

  • Page 98: The Outdoor Unit Fan Error

    Is the Pin voltage #6 - #3 of CN40 and 41 changed high(4-5V) and low(0-1V) in case of Exchange INVERTER PCB making manual rotation slowly? Is the Pin voltage #7 - #3 of CN40 and Exchange the FAN motor 41 low(0-1V) in normal rotation? Exchange INVERTER PCB 12-35 Samsung Electronics...

  • Page 99: Total Current Trip Error

    Does the compressor rotate normally? Exchange the compressor Are the service valves full opened? Open valve screw to the end. Is AC power voltage normal during the Check AC power source compressor in operation? Exchange INVERTER PCB Samsung Electronics 12-36...

  • Page 100: In Case Of Heating At The Cooling Mode Or Cooling At The Heating Mode

    4-WAY valve coil error of 4-WAY valve coil. Dose the voltage of AC220V Exchange apply to the connector of 4-WAY the outdoor PCB. valve coil during the operation? Go to the next page 4-WAY valve main body error 12-37 Samsung Electronics...
  • Page 101 Connect the connector. correctly? Check the resistance value Outdoor fan error of outdoor fan. Dose the voltage of DC300V apply to the connector of outdoor Check the motor wire. fan during the operation of outdoor unit? Outdoor PCB error Samsung Electronics 12-38...

  • Page 102: Outdoor Temperature Sensor Error

    Exchange the sensor. (Refer to the R/T TABLE) Is the resistance value of sensor connection pull_up 18K? Exchange the PCB. Exchange the PCB. Normal operation Exit 400.0 350.0 300.0 250.0 200.0 150.0 100.0 50.0 12-39 Samsung Electronics...

  • Page 103: Discharge Temperature Sensor Error

    Exchange the sensor. (Refer to the R/T TABLE) Is the resistance value of sensor connection pull_up 24K? Exchange the PCB. Exchange the PCB. Normal operation Exit 600.0 500.0 400.0 300.0 200.0 100.0 Samsung Electronics 12-40...

  • Page 104: Coil Temperature Sensor Error

    Exchange the sensor. (Refer to the R/T TABLE) Is the resistance value of sensor connection pull_up 18.2K? Exchange the PCB. Exchange the PCB. Normal operation Exit 400.0 350.0 300.0 250.0 200.0 150.0 100.0 50.0 12-41 Samsung Electronics...

  • Page 105: Fan 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? Exchange the Fan. Exchange the PCB. Normal operation Exit Samsung Electronics 12-42...

  • Page 106: Dc-Link Voltage Sensor Error

    1) Is the connection of R, S, T power wire normal? 2) Are Relay RY21 and R200 on the INVERTER PCB mounted normally? 2. Troubleshooting procedure Are connection of the wire from INVERTER PBA to Check and correct the wire connection EMI PBA normal? Exchange INVERTER PCB 12-43 Samsung Electronics...

  • Page 107: Over Current) Error

    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 12-44...

  • Page 108: Communication Error

    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. 12-45 Samsung Electronics...

  • Page 109: Compressor Start Error

    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. Samsung Electronics 12-46...

  • Page 110: Compressor Lock Error

    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. 12-47 Samsung Electronics...

  • Page 111: Dc Link Over Voltage/ Low Voltage Error

    Does the error reappear frequently Exchange INVERTER PCB The cause of this error may be power source trouble as like power interruption. Check the power source. 12-2-16 The others 1. Capacity miss match – Check again the indoor unit option code. Samsung Electronics 12-48...
  • Page 112 12-3-1 Pre-inspection Notices 1. Check if you pulled out the AC power plug when you eliminate the PCB or front panel 2. Don't hold the PCB side not impose excessive force on it to eliminate the PCB 3. Don’t pull the lead wire but hold the whole housing to connect or disconnect a connector to the PCB 4.
  • Page 113 Outdoor detailed inspection procedure 12-3-4 procedure Inspection Method Cause Plug out and pull the PCB out of . Over current the control box 1) Is 1st fuse disconnected? . AC part and pattern short of Outdoor Check the PCB fuse (Wait 3 minutes after power off) 1) Is the Compressor wire connected clockwise?
  • Page 117 Digit No 10th 11th 12th 13th 14th Feature Series Color Buyer...
  • Page 121 12-17...
  • Page 122 Opening the panel Tightly grab top of the front panel and pull it down to open. Then slightly lift the panel up. and slide it down. Open the panel and put the Air filter out. Clean the Air filter with a vacuum cleaner or soft brush. If dust is too heavy, rinse it with running water.

  • Page 127: Power Supply

    15-1. POWER SUPPLY Working Voltage 176V ~ 264V Within a 3% Deviation from Each Voltage at the Main Terminal of Voltage Imbalance Outdoor Unit Starting Voltage Higher than 80% of the Rated Voltage 15-2. WORKING RANGE Applicable models: AQ-09VFUAGM/CV AQ-12VFUAGM/CV AQ-18VFUAGM/CV AQ-24VFUAGM/CV AQ-36VFUAGM/CV...

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