Samsung AQV18EWAX Service Manual
  1. Manuals
  2. Brands
  3. Samsung Manuals
  4. Air Conditioner
  5. AQV18EWAX
  6. Service manual

Samsung AQV18EWAX Service Manual

Hide thumbs Also See for AQV18EWAX:
Table of Contents

Advertisement

Quick Links

See also: User Manual
AIR CONDITIONER
S.INVERTER
AQV18EWAN
AQV24EWAN
AQV18EWAX
AQV24EWAX
Refer to the service manual in the GSPN(see the rear cover) for the more information.
SPLIT-TYPE AIR CONDITIONER
Basic : AQV18UGAN
AQV24UGAN
Model : AQV18EWAN
AQV24EWAN
Model Code :
AQV18EWAN
AQV24EWAN
Air Conditioner
Mode
Mode can help you sleep quickly and
soundly and wake up refreshed.
Silence Mode
W
h
n e
o y
u
u
e s
h t
" e
l i S
n e
experience extremely quiet operation of your
air conditioner.
AQV18EWAX
AQV24EWAX
e c
M
o
d
, " e
o y
u
c
n

Advertisement

Table of Contents

Troubleshooting

loading

Related Manuals for Samsung AQV18EWAX

Summary of Contents for Samsung AQV18EWAX

  • Page 1 SPLIT-TYPE AIR CONDITIONER INDOOR UNIT OUTDOOR UNIT Basic : AQV18UGAN AQV24UGAN Model : AQV18EWAN AQV24EWAN Model Code : AQV18EWAX AQV18EWAN AQV24EWAX AQV24EWAN AIR CONDITIONER THE FEATURE OF PRODUCT Air Conditioner Mode S.INVERTER Mode can help you sleep quickly and soundly and wake up refreshed.

  • Page 2: Disassembly And Reassembly

    4-3-13 O.C.(over current)error When E464 is displayed..............4-18 4-3-14 Comp Rotation error When E467 is displayed................ 4-19 4-3-15 Current sensor error When E468 is displayed................. 4-20 4-3-16 DC-Link voltage sensor error When E469 is displayed............4-21 4-3-17 OTP error When E471 is displayed....................4-22 Samsung Electronics...

  • Page 3: Wiring Diagram

    16. Elecrtical Parts List ....................17. Wiring Diagram ..........................7-1 Indoor Unit ............................7-2 Outdoor Unit ............................. 10-4 １１ １１－１ １１－２ １１－２ １２ １２－１ １２－１ １２－１ １２－２ １２－２ １２－３ １２－３ １２－４ １２－４ １２－５ １２－７ １２－９ １２－６ １２－７ １２－１０ Samsung Electronics...
  • Page 4 １１ １１－１ HUMDITY CONTROL MPI DRIVE １１－１...
  • Page 5 １１－２ 11-2...
  • Page 6 Block Diagram IGBT DIODE OUTDOOR FAN SMPS DC_LINK CAP Samsung Electronics 11-3...
  • Page 8 Circuit Descriptions Circuit Descriptions 9-1-2 Outdoor Unit Samsung Electronics...

  • Page 10: Disassembly And Reassembly

    3. Disassembly and Reassembly  Necessary Tools Item Remark +SCREW DRIVER MONKEY SPANNER Samsung Electronics...

  • Page 11: Indoor Unit

    FRONT.(use + Screw Driver) 4) Loosen connector wire(white) and detach the temperature sensor wire. 5) To detach the FRONT-PANEL the main frame, unfasten 2 screw at the bottom.(use + Screw Driver) 6) Take off the FRONT-PANEL,lifting up the bottom. Samsung Electronics...
  • Page 12 ) Unfasten the earth screw.(use + Screw Driver) 2) Detach the temperature sensor and Humidity sensor. 3) Detach COVER-CONTROL from the CASE- CONTROL. 4) Loosen MPI connector wire(yellow), and MOTOR wires(white,blue). 5) Take off the CASE-CONTROL from the main frame. Samsung Electronics...
  • Page 13 Remark ) Unfasten the screw. 2) Cut the cable tie. 3) Loosen the terminal block wires. (Total 4EA: #N(T)-2EA, #2-TEA, #3-TEA)  Caution: The terminal is locking type. So, when you separate terminals, pull pressing the button. Button Samsung Electronics...
  • Page 14  Option connector.  Caution: When you separate the connector, pull pressing the locking button. 7) Loosen the Relay #4 blue-connector(RY7).  Caution: The terminal is locking type. So, when you separate terminals, pull pressing the button. Button Samsung Electronics...
  • Page 15 0) Loosen the Thermistor wire connector(CN43).  Caution: When you take off the PBA, don’t touch the components. Please hold the PBA both side. ) Loosen the Motor connector(CN7).  Caution: When you separate the connector, pull pressing the locking button. Samsung Electronics...
  • Page 16 Operating Instructions and Installation Parts Procedure Remark 2) Take off the main PBA from the ASS’Y Control in.  Caution: When you take off the PBA, don’t touch the components. Please hold the PBA both side. Samsung Electronics...
  • Page 17 ) 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 18 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 19 ３ 3-10...
  • Page 20 3-11...
  • Page 21 3-12...
  • Page 22 3-13...
  • Page 23 3-14...
  • Page 24 IC-PWM CONTROLLER;266,DIP,8P,300MIL,PLASTIC,-0.3/ IC0102 1203-003334 IC-RESET;S-801,SOT-23,5P,2.9x1.6mm,PLASTIC,3.716/ VA71 1405-000160 VARISTOR;680V,4500A,17.5x6.5mm,TP,INR14D681KORSY R4204,R4205 2002-001104 R-COMPOSITION;12Mohm,5%,1/2W,AA,TP,3.4x9mm R4203 2003-000448 R-METAL OXIDE(S);100Kohm,5%,2W,AA,TP,4x12mm R6107,R6106,R0101 ,R403,R404,R405,R2 322,R2323 R301,R302,R406,R5 ; P I 01,R6105,R6602 ; P I ; P I ; P I R201,R202,R203,R2 ; P I 04,R205,R206,R207, R208 Samsung Electronics...
  • Page 25 BLOW,GLASS,5.2x20mm F702 3601-001209 FUSE-RADIAL LEAD;250V,1A,TIME-LAG,-,8.5x8mm CN72 3711-000262 HEADER;1WALL,3P,1R,7.92MM,STRAIGHT,SN,W CN44 3711-000879 HEADER-BOARD TO CABLE;BOX,3P,1R,2.5mm,STRAIGHT,SN 1 CN6601 3711-000941 HEADER-BOARD TO CABLE;BOX,4P,1R,2.5mm,STRAIGHT,SN 0 DB41-00752A VIVALDI INDOOR INVERTER PCB FR-4 DB41-00794A VIVALDI INDOOR INVERTER PCB FR-4 1 , - CN91(1-8) DB93-06896C Vivaldi-P/J,190mm,25045TP,SMH250-5HRT,AWG#26,SSEC Samsung Electronics...
  • Page 27 2003-000708 R-METAL OXIDE(S);47ohm,5%,1W,AA,TP,3.3x9mm R101 2003-000855 R-METAL OXIDE(S);47Kohm,5%,3W,AA,TP,6x16mm R110 2003-002246 R-METAL OXIDE(S);620ohm,5%,1W,AA,TP,2.4x6.4mm R001 2006-001168 R-CEMENT;200ohm,5%,10W,CB,BK,15.7x11.5x34.2mm R401,R402,R403,R404,R 405,R406 R504,R505,R506,R507,R 553,R606,R607 R103,R512,R557,R559,R 601,R604 R324,R325,R327,R328, R407 ; P I R302,R303,R304,R305, ; P I R306,R316,R509,R552, R554,R555,R556,R558, R560,R561,R562,R563, R566,R573,R574,R805, R916,R917 ; P I ; P I Samsung Electronics...
  • Page 28 C304,C305,C306,C404, C405,C406,C407,C408, C409,C410,C417,C418, C501,C502,C503,C504, C505,C506,C507,C508, C509,C510,C511,C512, C513,C553,C554,C555, C556,C560,C561,C563, C565,C568,C570,C575, C576,C706,C3011 ; P I C113,C122,C802 2203-005261 C-CER,CHIP;1000nF,10%,25V,X7R,-,3216 C904 2203-006104 C-CER,CHIP;1000nF,10%,50V,X7R,3225 C008 2301-000141 C-FILM,LEAD-PEF;10nF,10%,630V,TP,16x11x7.5mm,5 C422,C803 2306-000123 C-FILM,LEAD-PPF;100nF,5%,630V,BK,26x16.5x8.5,2/ 100nF,5%,630V,17x12x6,15mm . 6 , C552,C559,C562,C564, 2401-000493 C-AL;10uF,20%,50V,LZ,TP,5x11mm,5mm ,105 C569,C574,C577 C906 2401-000493 C-AL;10uF,20%,50V,LZ,TP,5x11mm,5mm ,105 Samsung Electronics...
  • Page 29 IC01 DB09-00517A IC MICOM;MN103FA7K,-,80P,+5V,10 MHz,Flash Memory, IC50 DB91-00945A ASSY MICOM 09R FORTE,VIVACE, MONTBLANC 18K24K IC50 DB09-00338A IC MICOM;MB90F823,-,80 P,5 V,24 MHz,STM-0493-OA,- IC701 1103-001038 IC-EEPROM;93LC66,4KBIT,256X16BIT,SOP,8P,5X4MM,-,2 IC701 1103-001038 IC-EEPROM;93LC66,4KBIT,256X16BIT,SOP,8P,5X4MM,-,2 IC81 DB95-00595A ASSY-PHOTO COUPLER;MH080FXEA4,- I F I LED2 DB98-16600A ASSY-LED GREEN;---------------------------------- Samsung Electronics...
  • Page 30 Electrical Part List OUTDOOR MAIN PCB DB93-07112K (AQV18E**),DB93-07112L(AQV24E**),(CONT.) LED1 DB98-16601A ASSY-LED RED;---------------------------------- LED3 DB98-16602A ASSY-LED YEL;---------------------------------- CN51 DB98-22298A ASSY-HOOK WHT;INVERTER,SMAW250A-04,RED CN50 DB98-22299A ASSY-HOOK WHT;INVERTER,SMAW250A-04,WHT CN30 DB98-24921A ASSY-CONNECTOR;AS-WB670X,SMAW250A-06,WHT Samsung Electronics...
  • Page 31 C007 2301-001577 C-FILM,LEAD-PPF C003 2301-001577 C-FILM,LEAD-PPF 3712-001139 CONNECTOR-TERMINAL FUSE 3601-001381 FUSE-CARTRIDGE FUSE 3601-001159 FUSE-CARTRIDGE FT00,FT01 DB27-00040A COIL CHOKE DB41-00724A PCB OUTDOOR EMI C004,C005 2201-000154 C-CERAMIC,DISC VA01,VA02,VA03,VA05 DB67-00942A VARISTOR CAP DB93-06817A ASSY CONNECTOR WIRE-POWER L/W EARTH DB93-04344B CONNECT WIRE Samsung Electronics...
  • Page 33 Exploded Views and Parts List Operating Instructions and Installation 5. Exploded Views and Parts List 5-1 Indoor Unit Samsung Electronics...
  • Page 34 DC12V,600gf.cm DB62-02941A CUSHION-TRAY RH EPS(30) DB63-01066A TRAY-STABILIZER HIPS DB94-00458D ASSY DRAIN-HOSE ASSY DB96-11950B ASSY EVAP TOTAL ASSY DB96-11950A ASSY EVAP TOTAL ASSY DB63-01065A HOLDER-EVAP HIPS DB94-01556B ASS Y-CROSS FAN ASSY ; AS +GF20% DB94-00455B ASSY RUBBER BEARING ASSY Samsung Electronics...

  • Page 36: Parts List

    Exploded Views and Parts List Parts List Q’TY SA/SNA AQV24EWAX AQV18EWAX DB90-03914F ASS’Y CABI FRONT ASS’Y, SC-94445T DB90-00970W ASS’Y BASE OUT ASS’Y, SC-94445T ASS’Y BASE OUT ASS’Y, SC-94445T DB90-00970V DB61-01593A BRACKET VALVE SECC-P, SC-94445T DB67-00142A FAN-PROPELLER AS+G/F20%, Φ420 DB31-00492A Y ’...
  • Page 37 DB61-01097A HOLDER WIRE CLAMP ABS,-,-,-,BLK,V21-PJ DB91-00309A SCREW PH M3*L25 DB97-02418A SCREW TH M4*L10 DB95-01113F ASS'Y THERMISTOR 3%;;BLK;SMH200;WHT DB65-00004U TERMINAL BLOCK [1(L),2(N),F1,F2] DB65-10088D CABLE-TIE NYLON66 DB93-07171A C/W 485 COMM RED/BLUE DB93-04695B C/W M P I 100mm DB95-01703A ASSY HUMIDITY Samsung Electronics...
  • Page 39 5-4 Ass'y Control Out AQV18E** : DB93-07025M AQV24E** : DB93-07025N Samsung Electronics...
  • Page 40 Exploded view and Parts List Part List VIVALDI 18K VIVALDI 24K CODE DESC_SPEC SA/SNA DB93-07025M DB93-07025N DB61-00250A HOLDER WI DB62-04566B INSULATION-CONTROL BOX TOP DB93-07036A ASSY CONNET WIRE-FUSE TO TERMINAL DB73-00471A RUBBER Samsung Electronics...
  • Page 41 CN72-FAN MOTOR CN22-COMMUNICATION CN46-DOWNLOAD CN43-TEMPERATURE SENSOR CN91-DISPLAY CN44-FAN MOTOR FEEDBACK CN63-BLADE MOTOR CN6601-MPI FEEDBACK CN42-HUMIDITY SENSOR...
  • Page 42 10-1-2. Indoor Display PCB ① ② ① CN01-DISPLAY #1:DIO #2:CLK #3:STB #4:IRQ #5:GND #6:Vcc #7:Remocon Signal Output #8:MPI Display Control 10-1-3. Indoor MPI DISPLAY PCB ① ① MPI DISPLAY CONNECTION #1:MPI Lamp driving signal #2:Null #3:Vcc Samsung Electronics 10-2...
  • Page 43 10-1-4. Indoor EMI PCB POWER N WIRE POWER L WIRE EARTH WIRE POWER N WIRE POWER L WIRE 10-3 Samsung Electronics...
  • Page 44 10-4...

  • Page 45: Precautions

    - Work with insulation gloves during the repair and measurement of PCB.  Check the distance between the product and the other electronic appliances such as TV, Video, and audio. It should be over 2m. - If not, it causes a bad picture quality or a noise.  Repairing the products by consumer should be strictly prohibited. - There is a danger of electric shock or fire due to incorrect disassembly. Samsung Electronics...

  • Page 46: Precautions For The Safety

    - There is a danger of electric shock.  In case the product will not be in use for a long time, the battery of remote control should be kept separately. - Leakage of inside fluid can cause break down of remote control. Samsung Electronics...

  • Page 47: The Feature Of Product

     Deodorizing Filter Activated carbon is incorporated in the filter,efficiently absorbing cigarette smoke, pet odors, and other unpleasant smells, replacing them with clean,refreshing air. Mode  The Micro Plasma Ion mode creates strong purified zone in your room. Samsung Electronics...

  • Page 48: Modified Items Compared With Basic Model

    New model part and characteristic AQV18EWAN AQV18UGAN AQV24EWAN AQV24UGAN Indoor Design changed Indoor Front Display changed Outdoor chassis changed 2-1-3 New components to be applied Part New contents and characteristic Image (optionable) mpi lamp Indoor (optionable) HUMIDITY SENSOR (optionable) Samsung Electronics...
  • Page 49 AQV18EWAN/AQV18EWAX AQV24EWAN/AQV24EWAX Model Item Indoor Unit Outdoor Unit Indoor Unit Outdoor Unit - l l - l l Cooling Capacity (Low / Std / Max) i t a Cooling Running Frequency (Low / Std / Max) i t a i d i i y f ℓ...

  • Page 50: Accessory And Option Specifications

    2-3-1 Accessories Item Descriptions Code-No. Q'TY Remark Plate-hanger DB90-02738A Auto Remote Control DB93-07547A Comfort Temp Care Humi Batteries for Remote Control DB47-90024A Indoor Unit User’s Manual DB98-29980A Installation Manual DB98-29786A Drain Plug DB67-20011A Outdoor Unit Rubber Leg DB73-20134A Samsung Electronics...

  • Page 51: Reference Sheet

    " digit for Electric Source deviation. : Only for "XAP", "XAX", "GEM" Buyer. " Indoor "N" & Outdoor "X". : Use the “ ” digit for KD models. "CKD" "1" & "SKD" "2". Except the RAC Export Models for China. 12-1 Samsung Electronics...

  • Page 52: Low Refrigerant Pressure Distribution

    Note : Please measure the refrigerant pressure after the air conditioner operates on testing cooling mode during more than 10 minutes. Indoor Temp. Variation : 20°C ~ 32°C Outdoor Temp. Variation : -5°C ~ 45°C Low Refrigerant Pressure Distribution AQV18** Indoor Temperature Outdoor Temperature[ ] AQV24** Indoor Temperature Outdoor Temperature[ ] Samsung Electronics 12-2...
  • Page 53 １２－３ 12-3...
  • Page 54 １２－４ 12-4...
  • Page 55 12-5...
  • Page 56 12-6...
  • Page 57 １２－５ １２ １２－７...
  • Page 58 (OPTION) １２－５－２ (OPTION) １２－５－３ 12-8...
  • Page 59 １２－６　Ｉｎｓｔａｌｌａｔｉｏｎ １２ １２ １２－９...
  • Page 60 １２－７ １２－７－１ １２－１０...
  • Page 61 １２－７－２ １２－１１...
  • Page 62 Asia http://asia.samsungportal.com Mideast & Africa http://mea.samsungportal.com This Service Manual is a property of Samsung Electronics Co., Ltd. © Samsung Electronics Co., Ltd. Sep. 2008. Any unauthorized use of Manual can be punished under applicable Code No. DB98-29945A(1) International and/or domestic law.
  • Page 63 8. Schematic Diagram 8-1 Indoor Unit This Document can not be used without Samsung’s authorization. Samsung Electronics...
  • Page 64 8-2 Outdoor Unit This Document can not be used without Samsung’s authorization. Samsung Electronics...

  • Page 65: Troubleshooting

     Push the button to Push the button to set the display panel to . Every time you push the button, the display panel reads     .. repeatedly.       Samsung Electronics...
  • Page 66 If all lamps of indoor unit are flickering, Plug out, plug in power plug again and press ON/OFF key to retry. If the unit is not working properly or all lamps are continuously flickering after setting the option code, see if the correct option code is set up for its model. Samsung Electronics...
  • Page 67 OPTION ITEMS REMOCON SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 MODEL AQV18EWA AQV24EWA Samsung Electronics...

  • Page 68: Display Error And Check Method

    - Check the assembling status of Fan connector(CN01) the outdoor PCB - Check the wire color of fan connector When it occur first, it shows Error.    Outdoor Fan error Continue 4-3-10 After 10 minutes, it can be operating. Samsung Electronics...
  • Page 69 - Reset remote-control option code Continue 4-3-20 match DC-Link voltage no display it operates after 3 minutes. under/over error Operation If outside temperature come back within no display Continue Condition Error the normal range, it operates. Samsung Electronics...

  • Page 70: Fault Diagnosis By Symptom

    Is the communication error Terminate the service. occurred again? Is the connection of Correct the wrong cable communication cable normal? Exchange the Indoor unit’s PBA Is the communication error Terminate the service. occurred again? Exchange the Outdoor unit’s PBA Samsung Electronics...
  • Page 71 Connect the sensor to CN43, supply power, and measure the voltage of #1 and #2 of the CN43 connector. Below 0.5V? Exchange the ASS’Y PCB Exchange the ASS’Y PCB Over 4.9V? MICOM Error or Connector(CN43) check Exchange the ASS’Y PCB Samsung Electronics...
  • Page 72 Connect the sensor to CN43, supply power, and measure the voltage of #3 and #4 of the CN43 connector. Below 0.5V? Exchange the ASS’Y PCB Over 4.9V? Exchange the ASS’Y PCB MICOM Error or Connector(CN43) check Exchange the ASS’Y PCB Samsung Electronics...
  • Page 73 Test rod location Normal Voltage PCB CN72 Condition About AC pin #3 and #5 Fan operate 180V Replace Motor Motor Fan-Capacitor is out of order Fan-Capacitor Fan motor Fan motor is out of order. should be replaced. Samsung Electronics...
  • Page 74 Check the connection of CN6601 on the PBA Is it OK? Reassemble the connector. Is the voltage between Pin#3 and GND Exchange the PBA DC11~12V ? Is the voltage between Pin#4 and GND Exchange the Ass’y Compact MPI DC11~12V ? Exchange the PBA 4-10 Samsung Electronics...
  • Page 75 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 Samsung Electronics 4-11...
  • Page 76 Exchange the sensor. (Refer to the R/T TABLE)(CN50 PIN#3,#4) 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 4-12 Samsung Electronics...
  • Page 77 Exchange the sensor. (Refer to the R/T TABLE)CN50 PIN #3,#4 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 4-13...
  • Page 78 The condition is too poor for airconditioner to operate. Wait until discharge temperature is decreased. Operate the A/C Restart after power off Is the dischagre over temperature sensor error Exchange the Ass’y Compact MPI appeared again? Exchange the PBA 4-14 Samsung Electronics...
  • Page 79 Is the voltage of CN01 #3,#6 within 1V~5V Exchange the PBA during the operation? PBA problem or MOTOR problem Change the main PBA first and then check the operation Terminate service Is the FAN error appeared again? Exchange the MOTOR Samsung Electronics 4-15...
  • Page 80 Is the restart error occurred again? Terminate the service. 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. 4-16 Samsung Electronics...
  • Page 81 Is the position of temperature sensor Correct the sensor position or and the sensing value normal? exchange the sensor. Is the connection cable for Correct the cable connection. the compressor and power terminal normal? Exchange the PCB. Samsung Electronics 4-17...
  • Page 82 Is the position of temperature sensor Correct the sensor position or and the sensing value normal? exchange the sensor. Is the connection cable for Correct the cable connection. the compressor and power terminal normal? Exchange the PCB. 4-18 Samsung Electronics...
  • Page 83 Operating Instructions and Installation 4-3-14 Comp Rotation errorWhen is diplayed Restart after power off Is the connection of Comp.wire OK? Replace the wires according to the wiring diagram Exchange the PBA Samsung Electronics 4-19...
  • Page 84 1. Checklist : 1) IIs there no short or open in every component around IC451 and IC452? 2. Troubleshooting procedure Restart after power off Is the current sensor error appeared again? Terminate the service Exchange the PBA 4-20 Samsung Electronics...
  • Page 85 Is the capacitor(C101, C102, C103) Exchange the outdoor PBA for DC-Link assembled in accordance the specification? Are R113, R114, R115 470kohm? Exchange the Outdoor PBA. Is R116 14.3kohm? Exchange the Fan. Exchange the Outdoor PBA. Normal operation Exit Samsung Electronics 4-21...
  • Page 86 1) Check the power condition at customer’s house (Is there any power noise?) 2) Have been there power failure? 2. Troubleshooting procedure Restart after power off Is the AC line zero cross signal error appeared Terminate the service again? Exchange the PBA 4-22 Samsung Electronics...
  • Page 87 Exchange the one of them according to the exact outdoor unit model spec Re-set the option code again at indoor unit Is the capacity miss match error appeared Terminate the service again? Exchange the outdoor unit’s PBA Samsung Electronics 4-23...
  • Page 88 Is the resistance for the Exchange the OUTDOOR PCB. detection of DC Link voltage normal? Is the resistance value of Exchange the OUTDOOR PCB. DC Link discharge normal? Is the reactor insulation damaged? Exchange the OUTDOOR PCB. Exchange the reactor. 4-24 Samsung Electronics...

  • Page 89: 4-3-22 No Power (Completely Dead)-Initial Diagnosis (Not Displayed

    Replace fuse FUSE(F701) : T3.15[A]/250[V] Check the output of SMPS on the control board. Input power: AC230±15%[V] PBA should be replaced IC02 Input: DC12[V] IC02 output: DC5[V] PBA should be replaced Samsung Electronics 4-25...

  • Page 90: The Outdoor Unit Power Supply Error (Not Displayed)

    Is there no error at the insertion of PCB? Exchange the PCB. Exchange the PCB. Are the BLDC FAN Wire Is the +,- of C102 short? 1 and 3 short? Exchange the PCB. Exchange the BLDC FAN. Normal Operation Exit 4-26 Samsung Electronics...

  • Page 91: 4-3-24 When The Up/Down Louver Motor Does Not Operate. (Initial Diagnosis) (Not Displayed

    Voltage at pin #30~#34 of micom (IC04) Micom (IC04) is faulty. change?(Squarewave) Exchange the PBA Voltage at pin #2 ~ #5 of CN61(motor connector) Driver IC05/06 (ULN2003A) is faulty. change?(Squarewave) Exchange the PBA Up/Down louver motor is faulty. Samsung Electronics 4-27...

  • Page 92: 4-3-25 When The Remote Control Is Not Receiving

    3V, the assembly module PCB is normal and the main PCB is poor. Then replace the main PCB. 3. Replace the assembly module PCB because the module PCB is poor if the voltage between No. 3 and No. 1 of CN45 maintains 5V after the remote control starts operation. 4-28 Samsung Electronics...

  • Page 93: Pcb Inspection Method

    2) The fan motor of the indoor unit doesn’t run. • Fan Motor Connector(CN72) is faulty 3) The power voltage between terminal #3 and #5 • ASS’Y Main PCB is faulty of the connector(CN72) is 0V. • Connection is faulty Samsung Electronics 4-29...

  • Page 94: Outdoor Detailed Inspection Procedure

    1) Is CN01 1, 3 over 250V? • Outdoor PCB Error 2) Is CN01 3, 5 within 1V~5V? • BLDC Motor Error 3) Is the voltage of CN01 6 changed? 4) Is the resistance of BLDC Motor 1, 3 opened after power off? 4-30 Samsung Electronics...

  • Page 95: Main Part Inspection Method

    ∞, 0Ω . . . Open or Short Stepping Motor Measure the resistance between the red wire and each terminal wire with a tester. Normal About 300Ω at the normal temperature (20˚C ~ 30˚C) Abnormal ∞, 0Ω . . . Open or Short Samsung Electronics 4-31...
  • Page 96 MEMO 4-32 Samsung Electronics...

This manual is also suitable for:

Aqv24ewaxAqv24ewanAqv18ewan

Table of Contents