Samsung AQV18VBAAQV24VBAAQV18VBC Service Manual
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Samsung AQV18VBAAQV24VBAAQV18VBC Service Manual

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AIR CONDITIONER

AQV18VBCN, AQV24VBCN
AQV18VBCX, AQV24VBCX
Refer to the service manual in the GSPN(see the rear cover) for the more information.
SPLIT-TYPE AIR CONDITIONER
Basic : AQV18VBA
AQV24VBA
Model : AQV18VBC
AQV24VBC
Model Code : AQV18VBCN
AQV24VBCN
THE FEATURE OF PRODUCT
High Energy Efficiency BLDC
Air Conditioner
Luxury Half Mirror Design
Mode
:
Mode can help you sleep quickly and
soundly and wake up refreshed.
Mode
: The Micro Plasma Ion mode creates strong purified
zone in your room.
Silence Mode
: When you use the "Silence Mode", you can
experience extremely quiet operation of your
air conditioner.
AQV18VBCX
AQV24VBCX

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Summary of Contents for Samsung AQV18VBAAQV24VBAAQV18VBC

  • Page 1: Air Conditioner

    SPLIT-TYPE AIR CONDITIONER Basic : AQV18VBA AQV24VBA Model : AQV18VBC AQV24VBC Model Code : AQV18VBCN AQV18VBCX AQV24VBCN AQV24VBCX AIR CONDITIONER THE FEATURE OF PRODUCT High Energy Efficiency BLDC  Air Conditioner Luxury Half Mirror Design  Mode   Mode can help you sleep quickly and soundly and wake up refreshed.

  • Page 2: Table Of Contents

    5-3 Ass’y Control In ..........................5-4 Ass’y Control Out ..........................16. Electrical Parts List ........................17. Wiring Diagram ..........................7-1 Indoor Unit ............................7-2 Outdoor Unit ............................ 18. Schematic Diagram ........................8-1 Indoor Unit ............................8-2 Outdoor Unit ............................ Samsung Electronics...
  • Page 3 14-2 Low Refrigerant Pressure Distribution 14-2 ..................14-3 Pressure & Capacity mark 14-3 ......................14-4 Q & A for Non-trouble 14-4 ........................14-5 Cleaning/Filter Change 14-7 ......................... 14-6 Installation 14-9 ............................14-7 Installation Diagram of Indoor Unit and Outdoor Unit 14-10 ............Samsung Electronics...

  • Page 4: Precautions

    Do not place a cloth or other materials over it.  Remove the batteries if you don’t use the remote control for a long time. (If applicable)  Use the remote control within 7 meters from the indoor unit. (If applicable) Samsung Electronics...

  • Page 5: Disposing Of The Unit

     Young children or infirm persons should be always supervised when they use the air conditioner.  Max current is measured according to IEC standard for safety.  Current is measured according to ISO standard for energy efficiency. Samsung Electronics...

  • Page 6: Product Specifications

    Mode can help you sleep quickly and soundly and wake up refreshed. Mode  The Micro Plasma Ion mode creates strong purified zone in your room.  Silence Mode When you use the “Silence Mode”, you can experience extremely quiet operation of your air conditioner. Samsung Electronics...

  • Page 7: Product Specifications

    Outdoor Unit : DB7°C WB 6°C indoor 16°C ~ 32°C 16°C ~ 32°C cooling Outdoor -10°C ~ 43°C -10°C ~ 43°C Operation conditon range indoor 27°C or less 27°C or less heating Outdoor -15°C ~ 24°C -15°C ~ 24°C Samsung Electronics...

  • Page 8: The Comparative Specifications Of Product

    Outdoor Unit 58dB↓ 60dB↓ Silver Nano Evaporator Silver Nano Evaporator Filter Anti Allergy Filter Anti Allergy Filter Air Purifying System Deodorizing Fiter Deodorizing Fiter Micro Plasma Ion MPI Mode MPI Mode Indoor Display Digital i Display Digital i Display Samsung Electronics...

  • Page 9: Accessory And Option Specifications

    2-4 Accessory and Option Specifications 2-4-1 Accessories Item Descriptions Code-No. Q'TY Remark Ass'y Plate Hanger DB70-00505A Remote Control DB93-04394G Indoor Batteries for Remote Control DB47-90024A Unit User’s Manual DB98-28491A Installation Manual DB98-28492A Samsung Electronics...
  • Page 10 Remark Drain Plug DB67-20011A Outdoor Unit Rubber Leg DB73-20134A Assembly Pipe, ø6.35mm DB96-06553A Assembly Pipe, ø12.70mm DB96-06553E **18** Assembly Pipe, ø15.88mm DB96-06553G **24** Accessory PE T3 Foam Tube Insulation DB72-50165A Vinyl Tape, Width 50mm DB72-00459A Drain Plug DB67-20011A Samsung Electronics...
  • Page 11 Operating Instructions and Installation Accessories(cont.) Item Descriptions Code-No. Q'TY Remark Rubber Leg DB73-20134A Pipe Clamps A DB39-20224A Pipe Clamps B DB39-20224B Accessory Cement Nail M4x16 Tapping Screws 6002-000215 Drain Hose, length 2m DB62-00487A Putty 100g DB98-10568A Samsung Electronics...

  • Page 12: Alignment And Adjustments

    • Because the Test Mode operate the cool mode by force not related to the set temperature / indoor temperature, check whether each subordinate is operated normally or not after completing installation and must turn off the power of the air conditioner. Samsung Electronics...

  • Page 13: Indoor Display Error And Check Method

    Indoor Fan Motor Abnormal Operation FAN Error Holding for 15 sec. at less than 450rpm 1min. Time out Communication MPI Error All Lamps Blink EEPROM Error All Lamps Blink Option Error Option Not Set up, Option Data Error Samsung Electronics...

  • Page 14: Outdoor Led Error Display And Check Method

    ● ○ GAS Leak error ● ● ◎ AC Line Zero Cross Signal out ● ● ● Power ON reset(1sec) ◎ ○ ○ Capacity miss match ● : LED ON, ○ : LED OFF, ◎ : LED BLINK Samsung Electronics...

  • Page 15: Setting Option Setup Method

     Setting is not required if you must Every time you push the button, the display panel reads   a value which has a default.  . . .        repeatedly. Samsung Electronics...
  • Page 16 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 17: Option Items

    Operating Instructions and Installation Alignment and Adjustments OPTION ITEMS REMOCON SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 MODEL AQV18VBCN AQV24VBCN Samsung Electronics...

  • Page 18: Disassembly And Reassembly

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

  • Page 19: Indoor Unit

    2) Please open the front grille. 3) Please detach link grilles from main frame. 4) To detach front grille from main frame, please catches finger stop 5) Please loosen clamping screw and detach the terminal cover. 6) Please take out filter to downward. Samsung Electronics...
  • Page 20 2EA at the front of the panel front. 9) Loosen the screw of the ASSY DISPLAY. 10) Please separate Linked connector from the assy display. 11) Unlock 2 hooks between panel front and try drain to seperate panel front. Samsung Electronics...
  • Page 21 12) Unlock 2 hooks between panel front and back body. TRAY DRAIN 1) Please detach stepping motor wire. 2) Please pull tray drain and separate from back body. evap 1) Loosen the ground wire screw. 2) Detach the temperature sensor. 3) Detach the holder pipe. Samsung Electronics...

  • Page 22: Outdoor Unit

    5) Loosen 1EA screw, right of holder motor. 6) Detach the heat exchanger from indoor unit. MAIN PCB 1) Loosen 4EA screws of holder. 2) Detach Link wires of indoor, outdoor unit and fan motor. 3) Detach assy control from indoor unit. Samsung Electronics...
  • Page 23 Disassembly and Reassembly Parts Procedure Remark Fan Motor 1) Loosen 2EA screws of holder motor and & Detach the holder. Cross Fan 2) Loosen a screw and detach the cross fan. 3) Detach the holder bearing and motor. Samsung Electronics...
  • Page 24 1) Loosen 1 fixing screw(CCW) of the Cover- Control and detach the Cover Control. 2) Loosen fixing screws(CCW) and detach the Cabinet-Upper. 3) Loosen 1 screw(CCW) fixed to assemble Control Box with Cabinet-Side RH. 4) Loosen 6 fixing screws(CCW) and detach the Cabinet-Side RH. Samsung Electronics...
  • Page 25 Disassembly and Reassembly Parts Procedure Remark 6) Loosen fixing screws(CCW) of the Cabinet Front. 5) Loosen 2 screws(CCW) fixed on the Guide Condenser. Samsung Electronics...
  • Page 26 Motor 2) Detach the Fan Propeller. 3) Loosen 4 fixing screws(CCW) to detach the Motor. 4) Disconnect the wire between Ass’y Control Out and Motor. 5) Loosen 2 fixing screws(CCW) and detach the Bracket Motor. Samsung Electronics...
  • Page 27 3) Disassemble the pipes in both inlet and outlet with welding torck. Before you disassemble the pipes and Condenser, be sure that there should be no refrigerant remained in the unit. 1) Loosen fixing screw(CCW) and detach the Heat Exchanger 4-10 Samsung Electronics...
  • Page 28 Procedure Remark Compressor 1) Disassemble the Felt Comp Sound. 2) Loosen the fixing nut(CCW) and detach the Compressor Lead Wire. 3) Loosen the 3 bolts(CCW) at the bottom of Compressor like the picture on the right side. Samsung Electronics 4-11...

  • Page 29: Exploded Views And Parts List

    �� � �� �� � � � ��� � �� � ��� � ��� ��� ��� ��� ��� ��� ��� ��� ��� ��� ���� ���� ��� ���� ��� ���� ���� ���� ��� ��� ��� ���� ���� ���� ��� Samsung Electronics...
  • Page 30 Class E DB94-01153B ASSY BODY BACK ASS’Y 13-1 DB61-03029A BODY BACK HIPS 13-2 DB93-04230A ASSY COMPACT MPI ASS’Y 13-3 DB63-01583A COVER MPI HIPS DB61-01981B HOLDER PIPE HIPS DB67-00499C CAP SCREW HIPS DB70-00505A PLATE HANGER SGCC-M DB93-04700P ASSY REMOCON ARH-1346 Samsung Electronics...

  • Page 31: Outdoor Unit

    5-2 Outdoor Unit Samsung Electronics...

  • Page 32: Parts List

    R410A, SANHUA, 1/4” DB64-02083A SCREEN-COND BAR P.E.H 100% DB93-05539E ASS’Y CONTROL OUT ASS’Y DB93-05539F ASS’Y CONTROL OUT ASS’Y DB32-00176A THERMISTOR OUT/DIS ASS’Y DB32-00175A THERMISTOR COND ASS’Y DB39-01301A CONNECT WIRE COMP ASS’Y DB63-02024A FELT COMP SIDE OUT DB63-02025A FELT COMP TOP Samsung Electronics...

  • Page 33: Ass'y Control In

    C/W STEP MOTOR UP/DOWN ASSY DB32-00020E ASSY THERMISTOR 4P (103T) DB39-01193A COMM 485 WIRE ASSY DB39-00765T C/W POWER(L) LEAD WIRE DB93-04622A C/W DISPLAY DB93-04430A ASSY MODULE PCB ASSY DB93-04484A C/W STEP MOTOR AUTO GRILL DB93-04695A C/W MPI 4P (103T) Samsung Electronics...
  • Page 34 MEMO Samsung Electronics...

  • Page 35: Ass'y Control Out

    5-4 Ass'y Control Out  A QV18VBCX : DB93-05539E AQV24VBCX : DB93-05539F Samsung Electronics...
  • Page 36 6002-000555 SCREW-TAPPING M4,2S,L25 6002-000231 SCREW-TAPPING THH+ M4,2S,L12 DB95-01078F ASSY-TERMINAL BLOCK ASSY-TERMINAL BLOCK 250 TAB 6pin DB65-00228A TERMINAL BLOCK TERMINAL BLOCK DB65-10088D CABLE-TIE NYLON66 L100MM DB98-24813A ASSY THERMAL GREASE Unit : gram 0.002 0.002 DB95-01040G ASSY NOISE ABSORBER 100nF,275V Samsung Electronics...

  • Page 37: Electrical Parts List

    R-CHIP 1Kohm,5%,1/10W,TP,1608 R404 2007-000078 R-CHIP 1Kohm,5%,1/10W,TP,1608 R409 2007-000078 R-CHIP 1Kohm,5%,1/10W,TP,1608 R503 2007-000078 R-CHIP 1Kohm,5%,1/10W,TP,1608 R602 2007-000078 R-CHIP 1Kohm,5%,1/10W,TP,1608 R604 2007-000078 R-CHIP 1Kohm,5%,1/10W,TP,1608 R610 2007-000078 R-CHIP 1Kohm,5%,1/10W,TP,1608 R611 2007-000078 R-CHIP 1Kohm,5%,1/10W,TP,1608 R606 2007-000084 R-CHIP 4.7Kohm,5%,1/10W,TP,1608 R909 2007-000084 R-CHIP 4.7Kohm,5%,1/10W,TP,1608 Samsung Electronics...
  • Page 38 C-CER,CHIP 100nF,+80-20%,25V,Y5V,1608 C508 2203-000189 C-CER,CHIP 100nF,+80-20%,25V,Y5V,1608 C509 2203-000189 C-CER,CHIP 100nF,+80-20%,25V,Y5V,1608 C510 2203-000189 C-CER,CHIP 100nF,+80-20%,25V,Y5V,1608 C102 2203-000192 C-CER,CHIP 100nF,+80-20%,50V,Y5V,2012 C201 2203-000192 C-CER,CHIP 100nF,+80-20%,50V,Y5V,2012 C202 2203-000257 C-CER,CHIP 10nF,10%,50V,X7R,1608 C203 2203-000257 C-CER,CHIP 10nF,10%,50V,X7R,1608 C204 2203-000257 C-CER,CHIP 10nF,10%,50V,X7R,1608 C401 2203-000440 C-CER,CHIP 1nF,10%,50V,X7R,1608 Samsung Electronics...
  • Page 39 COIL CHOKE USAV-07153,UU1116,15.0mH CN21 DB39-01194A CONNECT WIRE-15P 26 AWG,-,15,140,WHT DB41-00526A PCB MAIN CEM-3,2,1.0,T 1.6mm,160*140mm F701 DB61-00924A HOLDER-FUSE -,FH-51B,-,-,-,-,SSEC IC04 DB91-00375A ASSY-MICOM INV Vivace2,MB90F823,sop,ROM,128K bytes CN63 3711-000999 HEADER-BOARD TO CABLE SMW250-05 WHT CN21 DB93-04257A ASSY PCB SUB COMM 485 Samsung Electronics...
  • Page 40 2203-000192 C-CER,CHIP 100nF,+80-20%,50V,Y5V,2012 C307 2203-000192 C-CER,CHIP 100nF,+80-20%,50V,Y5V,2012 C316 2203-005249 C-CER,CHIP 100nF,10%,50V,X7R,1608 RY01 3501-001248 RELAY-MINIATURE 12V,-,11.7MA,DPDT,4MS,4MS CN31 3711-000015 HEADER-BOARD TO CABLE BOX,2P,1R,2.5MM,STRAIGHT,SN,WHT CN12 3711-003847 HEADER-BOARD TO CABLE BOX,12P,1R,2mm,ANGLE,SN CN11 3711-006040 HEADER-BOARD TO BOARD NOWALL,10P,2R,2.54mm,ANGLE,AU,BLK DB41-00528A PCB SUB CEM-3,2,1.0,1.6T,50*33,-,9,-,COMM 485 Samsung Electronics...
  • Page 41 R101 2003-000855 47K-J R-CEMENT(S);200ohm,5%,5W,CB,BK,13x9x25. R001 2006-001080 200-J R421 2006-001145 ASSY-R CEMENT 10m-J R401,R402,R40 3,R404,R405,R 2007-000074 R-CHIP;100ohm,5%,1/10W,TP,1608 100-J 1/10W,1608 R504,R505,R50 6,R507,R553,R 2007-000076 R-CHIP;330ohm,5%,1/10W,TP,1608 330-J 1/10W,1608 606,R607 R323, R342, 2007-000077 R-CHIP;470ohm,5%,1/10W,TP,1608 470-J 1/10W,1608 R808 R103,R512,R55 7,R559,R601,R 2007-000078 R-CHIP;1Kohm,5%,1/10W,TP,1608 1K-J 1/10W,1608 Samsung Electronics...
  • Page 42 R206, R207 R106, R203, 2007-007342 R-CHIP;1.82Kohm,1%,1/10W,TP,1608 1.82K-F 1/10W,1608 R204 R105 2007-007445 R-CHIP;9.09Kohm,1%,1/10W,TP,1608 9.09K-F 1/10W,1608 R116, R117, 2007-008261 R-CHIP;150Kohm,1%,1/2W,TP,5025 150K-F 1/2W,5025 R118 C307, C308, C-CERAMIC,DISC;10NF,+80- 2201-000154 10nF C309, C310 20%,2KV,Y5P,TP,20X5MM,7.5 C-CERAMIC,DISC;2.2NF,10%,2KV,Y5P,TP,13X5 C105,C106 2201-000322 2.2nF MM,10 C-CERAMIC,DISC;2.2NF,10%,2KV,Y5P,TP,13X5 C903 2201-000322 2.2nF MM,10 Samsung Electronics...
  • Page 43 220uF C101, C102, 2401-003740 C-AL;560uF,20%,400V,WT,BK,35x50mm,10 560uF 400V C103 RESONATOR- XTAL51 2802-001179 4MHZ CERAMIC;4MHZ,0.5%,BK,8X3X5.5MM RESONATOR- XTAL 2802-001198 10MHZ CERAMIC;10MHZ,0.5%,BK,8X3X5.5MM RY03, RY04, RELAY-MINIATURE; 12Vdc, 200mW, 3000mA, PCJ- 3501-001154 12Vdc,3A RY05 1FormA, 10mS, 10m 112D3MH,501X RELAY-MINIATURE;12V,- RY31 3501-001248 G6S-2 12V/2A ,11.7MA,DPDT,4MS,4MS Samsung Electronics...
  • Page 44 D101 DB98-16591A ASSY-DIODE RECTIFIER;FEP30JP FEP30JP LED2 DB98-16600A ASSY-LED GREEN;---------------------------------- TLPG5600 LED1 DB98-16601A ASSY-LED RED;---------------------------------- TLPR5600 LED3 DB98-16602A ASSY-LED YEL;---------------------------------- TLPY5600 ASSY-HOOK WHT;INVERTER,SMAW250A- CN51 DB98-22298A SMAW250A-04 04,RED ASSY-HOOK WHT;INVERTER,SMAW250A- CN50 DB98-22299A SMAW250A-04 04,WHT ASSY-CONNECTOR;AS-WB670X,SMAW250A- CN30 DB98-24921A SMAW250A-06 06,WHT Samsung Electronics 6-10...
  • Page 45 250V,20A FUSE CLIP 3602-001038 FUSE-CLIP 250V,30A,10mohm 3712-001139 CONNECTOR-TERMINAL TAB,MALE,-,6.35X0.8MM 3712-001139 CONNECTOR-TERMINAL TAB,MALE,-,6.35X0.8MM 4715-001093 SURGE ABSORBER 3600V,20%,2000A,-,AXIAL FT00 DB27-00040A COIL CHOKE SSC3120030B,3.0mH, FT01 DB27-00040A COIL CHOKE SSC3120030B,3.0mH, DB41-00531A PCB SUB FORTE,CEM-3,2,1.0,1.6T,160*140 C/W POWER DB93-05058A ASSY CONNECTOR WIRE WIRE 6-19 Samsung Electronics...
  • Page 46 250V,30A FUSE CLIP 3602-001038 FUSE-CLIP 250V,30A,10mohm 3712-001139 CONNECTOR-TERMINAL TAB,MALE,-,6.35X0.8MM 3712-001139 CONNECTOR-TERMINAL TAB,MALE,-,6.35X0.8MM 4715-001093 SURGE ABSORBER 3600V,20%,2000A,-,AXIAL FT00 DB27-00040A COIL CHOKE SSC3120030B,3.0mH, FT01 DB27-00040A COIL CHOKE SSC3120030B,3.0mH, DB41-00531A PCB SUB FORTE,CEM-3,2,1.0,1.6T,160*140 C/W POWER DB93-05058A ASSY CONNECTOR WIRE WIRE Samsung Electronics 6-20...
  • Page 47  OUTDOOR DISPLAY PCB : DB93-04329A Location No. Code No. Description Specification Q’ty SNA/SA D901 0401-000005 DIODE-SWITCHING 1N4148,75V,150mA,DO-35,TP LED93 0601-001373 ROUND,RED,3MM`,630NM LED92 0601-001375 ROUND,GRN,3mm,570nm,3.8x5.3mm LED91 0601-001377 ROUND,YEL,3mm,585nm,3.8x5.3mm 3404-001220 SWITCH-TACT 12V,50mA,160gf,6.1x6.1x5.0mm,SPST CN953 3711-004068 HEADER-BOARD TO CABLE BOX,5P,1R,2MM,ANGLE,SN,WHT DB41-00545A PCB MAIN-DISPLAY AQV12JAKCV,FR-1,1,1.0,1.6T,-,Q,30,-,- 6-21 Samsung Electronics...

  • Page 48: Wiring Diagram

    7. Wiring Diagram 7-1 Indoor Unit This Document can not be used without Samsung’s authorization. Samsung Electronics...

  • Page 49: Outdoor Unit

    7-2 Outdoor Unit This Document can not be used without Samsung’s authorization. Samsung Electronics...
  • Page 50 MEMO Samsung Electronics...

  • Page 51: Schematic Diagram

    8. Schematic Diagram 8-1 Indoor Unit This Document can not be used without Samsung’s authorization. Samsung Electronics...

  • Page 52: Outdoor Unit

    8-2 Outdoor Unit This Document can not be used without Samsung’s authorization. Samsung Electronics...

  • Page 53: Circuit Descriptions

    9-1-1 Indoor Unit SMPS PART BUZZER PART INDOOR FAN CONTROL SUB PCB CONNECTOR ZERO CROSSING PART DISPLAY PART STEP MOTOR & ION INDOOR TEMPERATURE SENSOR MPI PART HUMID PART This Document can not be used without Samsung’s authorization. Samsung Electronics...
  • Page 54 Circuit Descriptions Circuit Descriptions 9-1-2 Outdoor Unit TEMPERATURE SENSOR & EEV SMPS INVERTER This Document can not be used without Samsung’s authorization. Samsung Electronics...

  • Page 55: Refrigerating Cycle Diagram

    9-2 Refrigerating Cycle Diagram Indoor Unit Outdoor Unit 2 way valve Expansion valve Liquid side Heat Exchanger (Evaporator) Heat Exchanger (Condenser) Cross Fan Gas side 4 way valve 3 way valve Cooling Compressor Heating Gas Leak Check Point Samsung Electronics...

  • Page 56: Pcb Diagram

    10. PCB Diagram 10-1 Indoor PCB The red number connecter is not used. Power Temperature Sensor Motor RPM Feedback Auto Grill Remocon Module HVPS(High voltage Generator) Humidity Sensor BLADE-H Step Motor Anions Display Indoor Fan Motor Samsung Electronics 10-1...

  • Page 57: Outdoor Pcb

    10-2 Outdoor PCB The red number connecter is not used. Power N COND/OLP Temperature Sensor Power L DIS/OUT Temperature Sensor BLDC FAN EEV Connector AC FAN Comp. Connector Wire Communication 485 Reactor Connector Wire 10-2 Samsung Electronics...

  • Page 58: Operating Instructions

    The design and shape are subject to change according to the model. Air Inlet Room Temperature sensor Power(On/Off) button Air filter Airflow blade (under the panel) (outlet) MPI(Micro Plasma Ion) mode indicator Timer/Good Morning Auto cleaning indicator mode indicator Set temperature & Operation indicator room temperature Samsung Electronics 11-1...
  • Page 59 Operating Instructions 11-1-2 Outdoor Unit Air Inlet (Rear) Air Outlet Connection Valve 11-2 Samsung Electronics...

  • Page 60: Wireless Remote Control-Buttons And Display

    Digital On/Off button Turbo button Auto Cleaning button Silence button Energy saving button Good Morning button On Timer button Timer Set/Cancel button Off Timer button MPI(Micro Plasma Ion) mode adjustment button Time adjustment button MPI(Micro Plasma Ion) On/Off button Samsung Electronics 11-3...

  • Page 61: Main Function

    Auto  Low  Medium  High Heat Mode Press the button on the remote control until Heat is displayed. Press the button to select the fan speed until the required setting is displayed. Auto  Low  Medium  High 11-4 Samsung Electronics...
  • Page 62 MPI Mode The air conditioner starts up in MPI-Auto mode automatically.   The MPI mode also runs when the air conditioner is turned on.  By pressing the button again, the MPI mode is canceled. Samsung Electronics 11-5...

  • Page 63: Troubleshooting

    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 12-1 Samsung Electronics...

  • Page 64: Fault Diagnosis By Symptom

    Replace fuse FUSE(F701) : T3.15[A]/250[V] Check the output of SMPS on the control board. Input power: AC230±15%[V] PCB should be replaced IC02 Input: DC12[V] IC02 output: DC5[V]  Check the setting temperature Samsung Electronics 12-2...
  • Page 65 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 12-3 Samsung Electronics...
  • Page 66 Voltage at pin #30~#34 of micom (IC04) Micom (IC04) is faulty. change?(Squarewave) Voltage at Driver IC05/06 (ULN2003A) is faulty. pin #2 ~ #5 of CN61(motor connector) change?(Squarewave) Up/Down louver motor is faulty. Samsung Electronics 12-4...
  • Page 67 Pull out the power cord and during the operation?(Square-Wave) execute the following step after 30 seconds. Disassemble the BLDC FAN Wire. Is the short between Exchange the PCB. the BLDC FAN Wires? Exchange the BLDC FAN MOTOR. Exchange the PCB. 12-5 Samsung Electronics...
  • Page 68 Pull out the power cord and exchange the PCB from the case after 30 seconds. Is the assembly of Micom and Exchange the PCB. peripheral circuit part good? Check again after assembly of PCB. Samsung Electronics 12-6...
  • Page 69 4 way valve coil. Dose the voltage of AC 220V 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 12-7 Samsung Electronics...
  • Page 70 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 12-8...

  • Page 71: Outdoor 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 12-9 Samsung Electronics...
  • Page 72 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 12-10...
  • Page 73 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 12-11 Samsung Electronics...
  • Page 74 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 12-12...
  • Page 75 1, 2 correct after power supply? Is the capacitor(C101, C102, C103) Connect the connector. for DC-Link assembled in accordance the specification? Are R113, R114, R115 470kohm? Exchange the PCB. Is R116 14.3kohm? Exchange the Fan. Exchange the PCB. Normal operation Exit 12-13 Samsung Electronics...
  • Page 76 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 12-14...

  • Page 77: Communication Error

    Correct the wrong wiring. and communication cable error? Is the connection of Correct the connection of communication cable normal? communication cable. Is it the outdoor Exchange the indoor/outdoor unit PCB. 2 Micom(Inverter + Main) model? Exchange the outdoor unit PCB. 12-15 Samsung Electronics...
  • Page 78 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 12-16...
  • Page 79 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. 12-17 Samsung Electronics...
  • Page 80 Is the resistance for the Exchange the PCB. detection of DC Link voltage normal? Is the resistance value of Exchange the PCB. DC Link discharge normal? Is the reactor insulation damaged? Exchange the PCB. Exchange the reactor. Samsung Electronics 12-18...
  • Page 81 12-2-18 The others 1. AC Line Zero Cross Signal OUT – Check the assembly condition of peripheral part of IC21, ZD21, ZD20 and D200 on the PCB. 2. Capacity miss match – Check again the indoor unit option code. 12-19 Samsung Electronics...

  • Page 82: 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 12-20...
  • Page 83 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? 12-21 Samsung Electronics...

  • Page 84: 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 12-22...

  • Page 85: Block Diagram

    : BLADE CONTROL SELECT(UP/DOWN) MELODY CONTROL PART SLEEP OPERATION DC5V VOLTAGE REGULATOR ANION SELECT SPEAKER AUTO CLEAN SELECT OPTION ENERGY SAVING SELECT DC12V SMPS POWER BLOCK SOUND ON/OFF SELECT DIGITAL ON/OFF DC5V DC12V AC230V AC INPUT DC25V 13-1 Samsung Electronics...
  • Page 86 Block Diagram INDOOR FAN CONTROL BUZZER CONTROL SMPS 485 COMMUNICATION SUB-PCB Samsung Electronics 13-2...

  • Page 87: Outdoor Unit

    ����������� ������� ������������������������� ��� � ������������������������ ���������� ������ ����������������������� ������������������ ������������ ������������ ������������������������� �������������������� ��� �� ���������� ������������������ �������������������� �� ��������������������� �� ������������������ �� ����������� �� �������������������� �� ��� �� ������������������ �� ��������������������������� ����������� ���� �������� ����������� 13-3 Samsung Electronics...
  • Page 88 Block Diagram IGBT DIODE OUTDOOR FAN SMPS DC_LINK CAP Samsung Electronics 13-4...

  • Page 89: Reference Sheet

    ③ : Use the " ③ " digit for classification between indoor and outdoor. Indoor  "N" & Outdoor  "X". ④ : Use the “ ④ ” digit for KD models. "CKD"  "1" & "SKD"  "2". Except the RAC Export Models for China. 14-1 Samsung Electronics...

  • Page 90: Low Refrigerant Pressure Distribution

    □ Indoor Temp. Variation : 20°C ~ 32°C □ Outdoor Temp. Variation : -5°C ~ 45°C Low Refrigerant Pressure Distribution AQV18VBC Indoor Temperature 32℃ 29℃ 27℃ 24℃ 21℃ Outdoor Temperature[℃] AQV24VBC Indoor Temperature 32℃ 29℃ 27℃ 24℃ 21℃ Outdoor Temperature[℃] Samsung Electronics 14-2...

  • Page 91: Pressure & Capacity Mark

    0.10197 0.73756 4.1868 14.286 0.0056146 0.42693 3.088 1.163 0.27778 3.9683 0.0015596 0.11859 0.85778 3.9302x10 -4 0.29307 0.06999 0.252 0.029885 0.21616 745.7 178.11 641.19 2,544.4 76.04 9.8067 2.3423 8.4322 33.462 0.013151 7.233 1.3558 0.32383 1.1658 4.6262 0.0018182 0.13826 14-3 Samsung Electronics...

  • Page 92: Q & A For Non-Trouble

    It occurs when the drain pump is plugged out or it is out of order. Check the power of the drain pump and the position of the drain hose, and when the pump is faulty, contact the drain pump manufacturer. Samsung Electronics do not manufacture drain pumps.
  • Page 93 Also, the remote controller may not work under intensive light from a 3-wave length lamp or a neon sign due to the EMI. In this case, take the remote controller closer to the receiver. 14-5 Samsung Electronics...
  • Page 94 There is a cost table. But, our service engineer needs to visit to total up the cost correctly. When you move in, make sure to contact Samsung Electronics Service Center or Authorized Service Agent in advance to streamline the process.

  • Page 95: Cleaning/Filter Change

    Reassemble the air filter and the front panel. Hook Note : • If you have not used the air conditioner for a long period of time, set the fan going for three to four hours to dry the inside of the air conditioner thoroughly. 14-7 Samsung Electronics...

  • Page 96: Replacing Deodorizing Filter

    Front panel  You can purchase deodorizing filter at the customer care center.  The filter function is not affected even if deodorizing filter and anti-allergy filter are inverted. Hook Samsung Electronics 14-8...

  • Page 97: Installation

    Electric and earth work shall meet the "Electric Facility Technology Standard" and the "Internal Wire Regulation" of the Electric Business Laws.  Inspection & Trial Run Upon completion of the tests, you shall make a trial run while you explain the main functions of the air conditioner to finish the installation. 14-9 Samsung Electronics...

  • Page 98: Installation Diagram Of Indoor Unit And Outdoor Unit

    183kgf•cm with a torque wrench. 7) Check for gas leakage. - At this time, especially check for gas leakage from the 3 way valve’s stem nuts, and from the service port cap. Samsung Electronics...

  • Page 99: Samsung Electronics

    • Make sure you do not bend the connection pipes in the middle and store together with the cables. • Move the indoor and outdoor units to a new location. • Remove the mounting plate for the indoor unit and move it to a new location. 14-11 Samsung Electronics...
  • Page 100 Mideast & Africa http://mea.samsungportal.com © Samsung Electronics Co., Ltd. Dec. 2007. This Service Manual is a property of Samsung Electronics Co., Ltd. Printed in China. Any unauthorized use of Manual can be punished under applicable International and/or domestic law.

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