Daewoo DSA-151L Service Manual
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Daewoo DSA-151L Service Manual

Daewoo DSA-151L Service Manual

Air conditioner
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Manual de servicio
Acondicionador de Aire Tipo Split
Modelo: DSA-181L

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Summary of Contents for Daewoo DSA-151L

  • Page 1 Manual de servicio Acondicionador de Aire Tipo Split Modelo: DSA-181L...

  • Page 2: Table Of Contents

    Contents CONTENTS 1. Specifications ....................2 2. Outline and Dimensions .................3 3. Operation .....................5 4. Wiring Diagram..................17 5. Refrigerant Cycle ..................22 6. Control Block Diagram.................23 7. Electric Circuit Diagram................24 8. Trouble Shooting..................27 9. Disassembly Instructions ................43 1) Indoor Unit....................43 2) Outdoor Unit...................45 3) Exploded Diagram (Indoor Unit) ...............47 4) Exploded Diagram (Outdoor Unit) ............50 5) Control Box Assembly ................56...

  • Page 3: Specifications

    1. SPECIFICATIONS DSA-151L/DSA-181L/DSB-181L MODEL DSA-151L DSA-181L DSB-181L ITEM Function Cooling Class Power Supply AC 208~230V, 60Hz AC 208~230V, 60Hz AC 220~240V, 50Hz Capacity 4,300 5,100 5,100 Btu/h 15,500 17,500 17,500 Dehumidification 1.98l/h 2.3l/h 2.3l/h Running Current 6.6A 8.3A 9.8A Electrical...
  • Page 4 Connecting Pipe ¿‹ Æ˘˜ ˙` Plate Mounting ”fi `⁄˘˙ 1035 1035 `⁄„«…–‚fi‚ ˜ REMOCON Grille Insert ‰˙‡»– ‚Ø– ‚– Body ‰˙‡»– ‚ ˆ… Filter-L Filter-R...
  • Page 5 Inlet Inlet Panel Top Cabinet Outlet Handle Discharge Grille Service Valve Foot...

  • Page 6: Operation

    3. OPERATION PARTS OF NAME AND FUNCTION DSA-151L/DSA-181L/DSB-181L Indoor Unit Deodorizing Filter Removes bad smells from the air. Electrostatic Filter Test/Emergency/ Removes dust Remote Switch Air In particles from the air. Slide to select the desired position. Indoor Cover Air Cleaning...
  • Page 7 DSA-151L/DSA-181L/DSB-181L Indoor Unit Display Switch Panel Remote Control Signal Receiver This place is the part to receive the signal if it receive the signal, you can hear the signal “beep. beep”. EMERGENCY REMOTE Timer Quick Airclean There is a switch panel at inside of Front Panel.
  • Page 8 DSA-151L/DSA-181L/DSB-181L Outdoor Unit AC Cover Remove cover to access the AC connection from AIR IN this unit to the indoor unit. Connection Wire Drain Hose COPPER TUBING AIR OUT Service Valves The indoor and outdoor units are connected by copper tubes which are connected here.

  • Page 9: Remote Controller

    REMOTE CONTROLLER DSA-151L/DSA-181L/DSB-181L Name of Each Button Display AUTO Displays information pertaining to unit. ON/OFF Button Press to turn the unit on or off. TEMPERATURE Buttons Press to raise or lower FAN SPEED Button the desired temperature. Press to select the fan speed (High "...

  • Page 10: Remote Controller Display

    REMOTE CONTROLLER DISPLAY DSA-151L/DSA-181L/DSB-181L MODE Indicators (Auto/Quick/Cool/Fan/Dehumidifier) Lights to indicate the mode selected. AUTO FAN Indicators FAN DIRECTION Indicators Lights to indicate Lights to indicate the the fan speed. fan direction. NATURAL Indicator Lights to indicate the speeds simulating a breeze.
  • Page 11 DESCRIPTION OF FUNCTIONS OFF-Timer If you set time in OFF-Timer Mode, the unit will stop at the set time. Unit ON Unit OFF SET Time HOUR ON-Timer If you set time in ON-Timer Mode, the unit will run at the set time. Unit ON Unit OFF SET Time...
  • Page 12 Auto Auto Auto Auto Natural Natural Natural Natural (4) Automatic Operation If the unit is set in 'AUTO' mode, the unit operates automatically according to the room temperature to keep the room temperature comfortable. (COOLING) • DSA-151L/DSA-181L/DSB-181L +1°C +2°C (RT-DT)

  • Page 13: Sleep Mode

    Sleep Mode (1) When you are going to sleep, select sleep switch and the unit controls the room to the desired temperature. (The unit will not operate after 4 hour) (2) For changing the temperature. 0.5°C Difference desired temperature 0.5°C between room temperature (°C) 0.5°C...
  • Page 14 Frost Prevention of Indoor Unit When the unit operates at low ambient temperature, frost may appear on the Evaporator. When the indoor coil temperature is lower than 0°C at the end of 10 minutes of continuous compressor operation from the start, the microcomputer of the unit stops the compressor to protect the unit from the frost.

  • Page 15: Auto Mode

    Auto Mode (1) When the room temperature is higher than 28°C (Cooling Mode) !Compressor and lndoor Fan °C (Room temperature- Desired temperature) @ The fan will automatically operate as following Figure (Room temerature- °C Desired temperature) (2) When the room temperature is lower than 28°C and higher than 22°C (Dehumidification Mode). (3) When the room temperature is lower than 22°C (Fan only).

  • Page 16: Dehumidification Mode

    Dehumidification Mode Desired temperature < Room temperature Outdoor Fan, Compressor : ON Indoor Fan : Low speed > Desired temperature Room temperature Compressor : 3 min/ON, 5 min/OFF Indoor Fan : 3 min 30 second/ON, 4 min 30 second/OFF Fan Speed : Low speed >...
  • Page 17 Self-Diagnostic Function The control will contain diagnostic test to verify the integrity of the system. (1)Error Code Display Pattern ON LAMP: ON (Red) LED ON/OFF Error Code (Display in Emergency Mode only) DISPLAY PATTEN ERROR CONTENTS ERROR CODE 8 seconds Room air thermistor, connector 0.5 second Indoor coil thermistor, connector...

  • Page 18: Wiring Diagram

    4. WIRING DIAGRAM DSA-151L...
  • Page 19 DSA-181L/DSB-181L...
  • Page 20 MAIN ELECTRIC PARTS DSA-151L PART NAME PART CODE SPEC. QUANTITY REMARK Fan Motor 3964330200 IC-9425 KH 6C Fan Motor Capacitor 3106995010 1.2µF 450VAC 0.2A Fuse 5FVGB0302R 250V 3A S/B Fuse 5FVGD0402S 250V 4A 6ITS Indoor Transformer 5EPK533110 220V/15V Unit Stepping Motor 1...
  • Page 21 DSA-181L PART NAME PART CODE SPEC. QUANTITY REMARK Fan Motor 3964330200 IC-9425 KH 6C Fan Motor Capacitor 3106995010 1.2µF 450VAC 0.2A Fuse 5FVGB0302R 250V 3A S/B Indoor Fuse 5FVGD0402S 250V 4A 6ITS Unit Transformer 5EPK533110 220V/15V Stepping Motor 1 3108004310 MP28GA (L=1300mm) Stepping Motor 2 3108004300...
  • Page 22 DSB-181L PART NAME PART CODE SPEC. QUANTITY REMARK Fan Motor 3108000300 IC-9425DWKC5C Fan Motor Capacitor 3106995010 1.2µF 450VAC 0.2A 3106901100 1.2µF 400VAC For VDE Appliance Fuse 5FVGB0302R 250V 3A S/B Indoor Fuse 5FVGD0402S 250V 4A 6ITS For NON Appliance Unit Transformer 5EPV633100 220V/18.3V...

  • Page 23: Refrigerant Cycle

    Condenser Propeller fan OUTDOOR UNIT Refrigerant flow Note) If the pipe length exceeds the standard length, add 30g of refrigerant per extra meter. Model Name DSA-151L DSA-181L DSB-181L Contents Capillary Tube ID2.0Ø x OD3.2Ø x L1200 ID1.78Ø x OD3.2Ø x L600 ID2.0Ø...

  • Page 24: Control Block Diagram

    6. CONTROL BLOCK DIAGRAM DSA-151L/DSA-181L/DSB-181L Operating Mode Unit on lamp Remote Signal Fan Speed receiver Quick lamp Emergency Timer Selection Air-clean lamp Flap Position Operation Timer lamp Temp. Setting ON/OFF SLEEP Room air temp. Turbo/MILD Indoor coil temp. Circuit for signal receiver...

  • Page 25: Electric Circuit Diagram

    7. ELECTRIC CIRCUIT DIAGRAM ELECTRIC CIRCUIT DIAGRAM DSA-151L/DSA-181L/DSB-181L Indoor Unit Fan Motor TERMINAL BLOCK I.D.C SWING MOTOR TRANS- SWING FORMER MOTOR2 SWING MOTOR1 POWER RELAY Display Part Control Part COMP COMP ROOM AIR SENSOR Signal Receiver Pemote Controller INDOOR COIL...
  • Page 26 Description 1. After the power ON/OFF button is pressed once, the relay and triac are turned ON or OFF per the remote control setpoint. – TRIAC is controlled per the fan speed selection. – RELAY is controlled per the operation mode selection. 2.
  • Page 27 PCB CIRCUIT DIAGRAM...

  • Page 29: Trouble Shooting

    8. TROUBLE SHOOTING...
  • Page 30 Has the 3 minutes time guard for compressor operated? Note 2) Please refer to page 16, Self Diagnostic-function. Self-Diagnostic Function DSA-151L/DSA-181L/DSB-181L 1) Error Code 1 ! Check the connector of room air thermistor. (or connecting wire) @ Check soldering of connecting on control P.C.B. (Error of soldering or short) # Check the resistance of room air thermistor.

  • Page 31: Neither Indoor Unit Nor Outdoor Unit Runs

    Neither Indoor Unit nor Outdoor Unit Runs The power is applied to the unit Rating voltage Check the Breaker or Fuse under 90% Check the voltage between of terminal block Rating voltage more than 90% Check the indoor unit display Self Diagnostic is the display all off? function is ON...
  • Page 32 Outdoor Unit Runs but Indoor Unit Do Not Run Check rotation of indoor fan Check the Fan Motor bearing and fan Rotate indoor fan by hand Check the power P.C.B. Rating voltage Check input Voltage of Fan Motor connector at power P .C.B under 90% The circuit for triac control Rating Voltage more than 90%...
  • Page 33 Outdoor Fan Do Not Run Check the wiring Rating voltage Check the voltage between and voltage of indoor unit terminal under 90% within doors Rating voltage Check the connecting wire Check the voltage between under 90% of outdoor unit terminal Rating voltage Check the Check the voltage between...
  • Page 34 Only Compressor Do not Run - Check the following at cooling mode Check the control P .C.B Rating voltage Check the voltage between the circuit for relay of indoor unit terminal less than 90% driving. Rating voltage more than 90% Check the connecting Rating voltage wire between indoor...
  • Page 35 Outdoor Fan and Compressor Do Not Run Check the wiring Rating voltage Check the voltage between and voltage of indoor unit terminal under 90% within doors Rating voltage Check the connecting wire Check the voltage between under 90% of outdoor unit terminal Rating voltage Check the Check the voltage between...
  • Page 36 PCB DRIVING DESCRIPTION...
  • Page 37 Power Supply (1) 0.1µF/250V AC 220V 1000/35V POWER TRANS DC 12V 7805 7812 470/16V 100/25V DESCRIPTION DC Power Supply in circuit needs +12V and +5V. +12V is used for Compressor Driving Relay, Triac Driving Photo Triac, Buzzer Driving Swing, Sweep Motor, and LED Display. AC voltage of secondary Power Transformer is rectified by Bridge Diode, and it is filtering by Main Condensor CE1.
  • Page 38 Oscillation (2) X-TAL 8MHz DESCRIPTION Oscillatory Frequency drive Micom, it is made up 8MHz X-TAL oscillatory Freqency. Ocillatory wave is as following Fig 2-1. -10% +10% Fig 2-1...
  • Page 39 Sensor(3) Room temperature and Evaporator temperature Sensor Input EVA: SENSOR 12.7K 12.7K ROOM: SENSOR MICOM DESCRIPTION Number 24, 25 of Micom is Terminal of A/D convertor Input. Room temperature and Evaporator temperature is sensing by change of Thermister Resistance, Micom is put in 5V by ratio between R18 (12.7KΩ) and R20 (12.7KΩ).
  • Page 40 Triac Driving (4) R5 100 AC220V TRIAC 0.1µF/120OHM KID 65004 JZ47 MICOM TLP560J TO MOTOR DESCRIPTION Number 38 Terminal of Micom is put out Pulse Output, by way of Buffer it is driving Photo Triac TLP560 and then Triac SM3JZ47 is supplied Trigger Signal. Trigger Test of Triac is detected Zero Cross Part of AC input and it is triggered from Zero Cross part to Time delay part according to Fan Speed.
  • Page 41 Selecting Mode (5) (SELECT S/W INPUT, OUTPUT) R15 1K EMERGENCY S/W MICOM 0.01 DESCRIPTION There are three Mode according to SW position as following Table 6-1. POSITION MODE Close EMERGENCY Open REMOTE Table 6-1...
  • Page 42 Micom Power Supply (6) 10µF/16V MICOM DESCRIPTION MICOM Power is supplied 5V at Number 42 using Digital, Number 22 using Reference of A/D Converter. CE2 is Ripple filter and CC1 is Noise filter.
  • Page 43 Reset (7) MICOM 5.6K 7042P RESET IC 4.7µF/50 DESCRIPTION Voltage less than about 0.8V put in Micom Terminal of Number 18 and then Micom reset. Reset IC detect Power ON and Voltage less than 4.2V, and then send Reset Signal. There is a Manual Reset S/W to reset manually if necessary.
  • Page 44 Function Selecting (8) Test MICOM R13 1K R12 1K R11 1K DESCRIPTION Selecting Function is as following Table 9-1. SHORT OPEN Skip Comp err detect Mild High Heat Cool 50Hz 60Hz Table 9-1...

  • Page 45: Disassembly Instructions

    9. DISASSEMBLY INSTRUCTIONS INDOOR UNIT PROCEDURES PHOTOS 1. Stop the Air conditioner and disconnect the power cord from the wall outlet. 2. Removing the Insert Grille and Frame. Fig 1 !Loosen three screws for fixing the the Insert Grille and Frame. (Pull out the frame cap before loosening three screws) (Fig 1) @ Loosen three screws at the Drain Pan.
  • Page 46 PROCEDURES PHOTOS 7. Removing the blower. After doing above procedures: !Loosen a screw for fixing holder bearing. @ Remove the blower. Fig 7 Fig 8...

  • Page 47: Outdoor Unit

    OUTDOOR UNIT ¡ DSA-151L PROCEDURES PHOTOS 1. Basic Procedures !Stop the air conditioner and pull out power plug from wall outlet. @ Remove CABINET TOP COVER. (Loosen ten screws) # Remove CABINET SIDE COVER. (Loosen six screws) $ Remove CABINET FRONT. (Loosen six screws) Fig 1 2.
  • Page 48 ¡ DSA-181L/DSB-181L PROCEDURES PHOTOS 1. Basic Procedures !Stop the air conditioner and pull out power plug from wall outlet. @ Remove CABINET TOP COVER. (Loosen ten screws) # Remove CABINET SIDE COVER. (Loosen six screws) $ Remove CABINET FRONT. (Loosen six screws) Fig 1 2.

  • Page 49: Exploded Diagram (Indoor Unit)

    EXPLODED DIAGRAM (Indoor Unit) ¡ DSA-151L/DSA-181L/DSB-181L...
  • Page 50 ¡ DSA-151L/DSA181L/DSB-181L Parts List (Indoor Unit)  Caution: In this Service Manual, some parts can be changed for improving, their performance without notice in the parts list. So, if you need the latest parts information, please refer to PPL(Parts Price List) in Service information Center(http://svc.dwe.co.kr)
  • Page 51 PART CODE PART NAME Q'TY SPEC REMARK 3100000200 FILTER PRE L ASS’Y 3102900100 HINGE R-A 3102900300 HINGE L-A 3100001000 M-PCB ASS’Y 3107800100 LINK VER CAM P .O.M 3104395400 F-PCB ASS’Y 3108004300 MOTOR STEPPING MP28GA/GSP-24SW-06/ST-28 L=400mm 3108912320 TERMINAL BLOCK DBW-4P 3107400300 EVA BRKT L SGCC T1.0 3107800200...

  • Page 52: Exploded Diagram (Outdoor Unit)

    EXPLODED DIAGRAM (Outdoor Unit) ¡ DSA-151L/DSA-181L...
  • Page 53 ¡ DSA-151L/DSA-181L Parts List (Outdoor Unit)  Caution: In this Service Manual, some parts can be changed for improving, their performance without notice in the parts list. So, if you need the latest parts information, please refer to PPL(Parts Price List) in Service information Center(http://svc.dwe.co.kr)
  • Page 54 PART CODE PART NAME Q'TY SPEC REMARK 3100016200 PIPE DISCHARGE ASS’Y ¡¨ T0.8 DSA-151L 3100016600 PIPE DISCHARGE ASS’Y ¡¨ T0.8 DSA-181L 3104400700 PIPE FILTER 3104400600 PIPE TURN ¡¨ T0.8 3104400800 PIPE CAPILLARY ¡¨ 3100030AE0 COMPRESSOR ASS’Y RCA150A001 DSA-151L 3107120010 COMPRESSOR ASS’Y...
  • Page 55 ¡ DSB-181L...
  • Page 56 ¡ DSB-181L Parts List (Outdoor Unit)  Caution: In this Service Manual, some parts can be changed for improving, their performance without notice in the parts list. So, if you need the latest parts information, please refer to PPL(Parts Price List) in Service information Center(http://svc.dwe.co.kr) PART CODE PART NAME Q'TY...
  • Page 57 PART CODE PART NAME Q'TY SPEC REMARK 3100016400 PIPE DISCHARGE ASS’Y ¡¨ T0.8 3104400700 PIPE FILTER 3104400600 PIPE TURN ¡¨ T0.8 3104400800 PIPE CAPILLARY ¡¨ 3107120000 COMPRESSOR CRDQ-0200-PFJ 3105400200 SERVICE VALVE-LIQ ¡¨ 3105400100 SERVICE VALVE-GAS ¡¨ 5SC0202700 POWER RELAY G7L-2A-TUB 3108912320 TERMINAL BLOCK SN-DBW-4P...

  • Page 58: Control Box Assembly

    CONTROL BOX ASSEMBLY ¡ DSA-151L/DSA-181L/DSB-181L 1 CONTROL BOX ASSY...

  • Page 59: Terminal Block

    ¡ DSA-151L/DSA-181L/DSB-181L  Caution: In this Service Manual, some parts can be changed for improving, their performance without notice in the parts list. So, if you need the latest parts information, please refer to PPL(Parts Price List) in Service information Center(http://svc.dwe.co.kr)
  • Page 60 DAEWOO ELECTRONICS CO., LTD. 686, AHYEON-DONG MAPO-GU SEOUL, KOREA C.P.O. BOX 8003 SEOUL, KOREA TELEX: DWELEC K28177-8 CABLE: “DAEWOOELEC” FAX: 02) 360-8184 TEL: 02) 360-8182/8178~9 http://www.dwe. daewoo.co.kr PRINTED DATE: APR.1999...

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