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Daewoo DSA-151L, Service Manual

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Daewoo DSA-151L Service Manual Download Page 26

25

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. If the power ON/OFF button is pressed once more, the relay and triac are turn off and the unit stops

operation.

3. The unit turns on or off according to the temperature setpoint by sensing the room air temperature through

thermistor.

4. If the fan speed selection is set to the auto position, the fan speed is automatically controlled according to the

temperature differance between room temperature and temperature setpoint.

Summary of Contents for DSA-151L

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

Page 2: ... 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: ...01 ECB185211A CRDQ 0200 PFJ Capacitor 30µF 400 VAC Type Indoor Cross Flow Fan Outdoor Propeller Fan Capacitor Indoor 1 2µF 400 VAC Outdoor 3µF 400 VAC Motor Model Indoor IC 9425DWKH6A IC 9425DWKH6A IC 9425DWKC5A Outdoor AM12DPD05 AM12DPD05 AM12DPD04 Control Capillary Charge Q ty 1 250g 1 450g 1 150g Type Flare OD Indoor 1 4 6 35mm Liquid Suction Outdoor 1 2 12 7mm Dimensions Indoor 1 035 x 322 x 2...

Page 4: ...3 2 OUTLINE AND DIMENSIONS 1 INDOOR UNIT DSA 151L DSA 181L DSB 181L 1035 205 322 453 Æ fi fi Ø ˆ Connecting Pipe Filter L Filter R Grille Insert Body Plate Mounting REMOCON 453 1035 ...

Page 5: ...4 2 OUTDOOR UNIT DSA 151L DSA 181L DSB 181L 277 367 615 800 Inlet Inlet Outlet Foot Handle Panel Top Cabinet Service Valve Discharge Grille ...

Page 6: ...s bad smells from the air Test Emergency Remote Switch Slide to select the desired position Indicators Indicate the AC setting Remote Sensor Power Plug LCD Remote Controller Air Cleaning Filters Removes dust and prohibits germs Cold Air Air In Fan Direction Up Down Fan Direction Left Right ON OF F EN TE R CA NC EL TIM ER RE SE T FA N DIR FA N SP EE D MO DE SL EE P ON OFF TE MP ...

Page 7: ...Panel At the time of operating open the Front Panel Emergency switch can be used when the remote controller is lost or Testing Remote switch is usually used by remote controller Indoor Unit Display Switch Panel ON Red Lights when the operation is going on Air clean Green Timer Yellow Lights during the time reservation mode Quick Red Lights during the time Quick Mode Timer Quick Airclean ON EMERGEN...

Page 8: ...ve cover to access the AC connection from this unit to the indoor unit Connection Wire Drain Hose COPPER TUBING Service Valves The indoor and outdoor units are connected by copper tubes which are connected here Grounding Screw Ground the unit here Ground Wire Not supplied ...

Page 9: ...4 5 6 8 10 12 16 20 24hr MODE Button Press to cycle through the modes Auto Quick Cooling Fan Dry SLEEP Button Press to set the unit for the sleep mode FAN DIR Button Press to select up down direction for fan FAN DIR Button Press to select left right direction for fan ON OFF Button Press to turn the unit on or off TEMPERATURE Buttons Press to raise or lower the desired temperature FAN SPEED Button ...

Page 10: ...1L MODE Indicators Auto Quick Cool Fan Dehumidifier Lights to indicate the mode selected TIMER Indicators Include sleep Lights to indicate the timer function mode TEMPERATURE RESERVATION TIME lndicators Lights to indicate the temperature or time FAN DIRECTION Indicators Lights to indicate the fan direction NATURAL Indicator Lights to indicate the speeds simulating a breeze FAN Indicators Lights to...

Page 11: ...Outdoor and Compressor is running regardless of room temperature If the Indoor Unit Display receive the signal of Remote Controller you can hear the signal beep or beep beep OFF Timer 4 DESCRIPTION OF FUNCTIONS Unit ON Unit OFF SET Time HOUR ON OFF ON Timer Unit ON Unit OFF SET Time HOUR ON OFF Control of Room Temperature Buzzer COMP ON COOLING COMP OFF 1 C 0 C Temperature RT DT Room temperatrue s...

Page 12: ... fan speed 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 FAN ONLY COOL DEHUMI AUTO Quick DIFICATION H H H X H H M M M X M X L L L X L X Auto X Auto Auto Auto X Natural Natural Natural X Natural X 0 L M H 1 C 2 C RT DT ...

Page 13: ...on once the SLEEP indicator will disappear in the display Sleep Mode 1 When the remote controller is lost damaged or the battery is discharged the Emergency operation can be used to run the unit 2 The setting conditions of Emergency operation are as follows Operation mode AUTO Preset temperature 26 C Fan speed AUTO Emergency Operation 0 0 5 1 0 HOUR SET TIME Desired Difference desired temperature ...

Page 14: ... 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 The control procedure for indoor coil freeze protection 1 The compressor and outdoor fan turn off 2 Indoor fan operates according to user set speed 3 The normal o...

Page 15: ... The fan will automatically operate as following Figure 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 1 0 C OFF ON Room temperature Desired temperature H M L 0 1 2 C Room temerature Desired temperature ...

Page 16: ...u turn on the unit the flaps move to the position of keeping the room temperature comfortable 2 The air discharge direction is below Up Down On Off Left Right On Off 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 Room temperat...

Page 17: ...e system 1 Error Code Display Pattern ON LAMP ON Red LED ON OFF Error Code Display in Emergency Mode only ERROR CODE DISPLAY PATTEN ERROR CONTENTS 1 Room air thermistor connector Indoor coil thermistor connector 2 Compressor Electrical parts of comp Gas leak 8 seconds 0 5 second 8 seconds 0 5 second ...

Page 18: ...17 4 WIRING DIAGRAM DSA 151L OUTDOOR UNIT INDOOR UNIT ...

Page 19: ...18 DSA 181L DSB 181L ...

Page 20: ...B0302R 250V 3A S B 1 Fuse 5FVGD0402S 250V 4A 6ITS 1 Transformer 5EPK533110 220V 15V 1 Stepping Motor 1 3108004310 MP28GA L 1300mm 1 Stepping Motor 2 3108004300 MP 28GA L 400mm 2 Terminal Block 3108912320 SN DBW 4P 1 Compressor 3100030AE0 RCA 150A001 1 Capacitor Dual 3109500100 370V 30 3µF 1 Fan Motor 3964320430 AM12DPD05 1 Power Relay 5SC0202700 G7L 2A TUB 1 Terminal Block 3108912320 SN DBW 4P 1 ...

Page 21: ...V 3A S B 1 Fuse 5FVGD0402S 250V 4A 6ITS 1 Transformer 5EPK533110 220V 15V 1 Stepping Motor 1 3108004310 MP28GA L 1300mm 1 Stepping Motor 2 3108004300 MP 28GA L 400mm 2 Terminal Block 3108912320 SN DBW 4P 1 Compressor 3107100000 ECB185211A 1 Capacitor Dual 3109500100 370V 30 3µF 1 Fan Motor 3964320430 AM12DPD05 1 Power Relay 5SC0202700 G7L 2A TUB 1 Terminal Block 3108912320 SN DBW 4P 1 ...

Page 22: ...1 For NON Appliance Transformer 5EPV633100 220V 18 3V 1 Stepping Motor 1 3108004310 MP28GA L 1300mm 1 Stepping Motor 2 3108004300 MP28GA L 400mm 2 Terminal Block 3108912320 SN DBW 4P 1 3108911600 1000 4DS 1 For VDE Appliance Compressor 3107120000 CRDQ 0200 PFJ 1 Capacitor Dual 3109500100 370V 30 3µF 1 3104500100 400V 30 3µF 1 For VDE Appliance Fan Motor 3108000400 AM12DPD04 1 Power Relay 5SC020270...

Page 23: ...NIT Refrigerant flow Service valve Service valve Accumulator Compressor Note If the pipe length exceeds the standard length add 30g of refrigerant per extra meter Contents Model Name Capillary Tube Charge Quantity DSA 151L ID2 0Ø x OD3 2Ø x L1200 1300 g DSA 181L ID1 78Ø x OD3 2Ø x L600 1500 g DSB 181L ID2 0Ø x OD3 2Ø x L650 1200 g ...

Page 24: ...door coil temp Quick lamp Air clean lamp Remote Emergency Operation Signal receiver Timer lamp A D converter lnitialization Clock generation DC power supply Circuit for relay driving Circuit for TRIAC control Transformer Circuit for signal receiver MICRO CONTROLLER Beeper Circuit for motor driving Stepping motor 1 2 Temp Setting ON OFF SLEEP Turbo MILD AC220V DC5V DSA 151L DSA 181L DSB 181L ...

Page 25: ...RMER CMC Indoor Unit Fan Motor SWING MOTOR SWING MOTOR2 ROOM AIR SENSOR INDOOR COIL SENSOR SWING MOTOR1 Display Part Control Part Signal Receiver Pemote Controller L N Y COMP FMC 7 ELECTRIC CIRCUIT DIAGRAM DSA 151L DSA 181L DSB 181L 1 ELECTRIC CIRCUIT DIAGRAM ...

Page 26: ...election 2 If the power ON OFF button is pressed once more the relay and triac are turn off and the unit stops operation 3 The unit turns on or off according to the temperature setpoint by sensing the room air temperature through thermistor 4 If the fan speed selection is set to the auto position the fan speed is automatically controlled according to the temperature differance between room tempera...

Page 27: ...2 2 PCB CIRCUIT DIAGRAM ...

Page 28: ...26 ...

Page 29: ...ck press the power ON OFF button on remote controller Does the beeper beep two times Is the display all off Check the connector on display PCB connected to control PCB Check the display PCB itself Check power supply mains or interconnection wires Check the wiring of indoor Is the switch position on switch pannel at Remote Does control PCB status LED repeat one second on and off control PCB fault M...

Page 30: ...for compressor operated Note 2 Please refer to page 16 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 2 Error Code 3 Display Emergency mode When the compressor do not run i Check the voltage between ...

Page 31: ...ion Control P C B defect Check the indoor unit display is the display all off Press the ON OFF switch of Remote Control Is the indoor unit display all off Pull out the power plug and then insert the power plug after 5 seconds Control P C B is normal Recheck from the beginning Rating voltage more than 90 Rating voltage under 90 NO NO NO YES YES Neither Indoor Unit nor Outdoor Unit Runs ...

Page 32: ...e of Indoor unit fan motor Check the fan motor capacitor Check the connecting wire of indoor fan motor Run again Check the Fan Motor bearing and fan Check the power P C B The circuit for triac control Change of fan motor NO Rating voltage under 90 Open or short YES Rating Voltage more than 90 Normal Outdoor Unit Runs but Indoor Unit Do Not Run ...

Page 33: ... between and of outdoor unit terminal N L Check the voltage between and of outdoor unit terminal Y N Check outdoor fan motor individually Check the connecting wire Check the connecting wire Check the wiring and voltage within doors Rating voltage under 90 Rating voltage under 90 Rating voltage under 90 ...

Page 34: ...tdoor unit Check the compressor Check the winding resistance Check the compressor capacitor Check the connecting wire between indoor and outdoor Change the magnetic contactor Change the compressor Check the control P C B the circuit for relay driving Rating voltage less than 90 NG Open or Short Rating voltage less than 90 Rating voltage more than 90 Rating voltage more than 90 OK Only Compressor D...

Page 35: ...l N L Check the voltage between and of outdoor unit terminal Y N Check compressor outdoor fan motor individually Check the connecting wire Check the connecting wire Check the wiring and voltage within doors Rating voltage under 90 Rating voltage under 90 Rating voltage under 90 Outdoor Fan and Compressor Do Not Run ...

Page 36: ...PCBDRIVINGDESCRIPTION ...

Page 37: ... of secondary Power Transformer is rectified by Bridge Diode and it is filtering by Main Condensor CE1 Filtered DC voltage is about 17V is regulated 12V DC by Regulator IC7812 And it is regulated 5V DC by Regulator IC7805 VAR is surge filter and CE2 CE3 CC2 CC3 is Noise filter 7805 7812 AC 220V VAR CC3 0 1 CC2 0 1 CE2 470 16V CC1 CE3 100 25V 3 1 DC 12V 2 3 1 2 0 1µF 250V BD1 1000 35V CE1 POWER TRA...

Page 38: ...36 Oscillation 2 19 20 X TAL 8MHz VDD 10 VSS 10 Fig 2 1 DESCRIPTION Oscillatory Frequency drive Micom it is made up 8MHz X TAL oscillatory Freqency Ocillatory wave is as following Fig 2 1 ...

Page 39: ...re is sensing by change of Thermister Resistance Micom is put in 5V by ratio between R18 12 7KΩ and R20 12 7KΩ Relation between temperature and voltage is following Table 3 1 CC8 CC9 is Noise filter Temperature C No 24 25 5 1 12 0 1 37 15 2 22 25 2 79 40 3 52 Voltage V Table 3 1 Sensor 3 24 25 R18 12 7K R20 12 7K CN8 R19 CC8 CC9 R21 EVA SENSOR ROOM SENSOR 1 2 3 4 MICOM ...

Page 40: ...est 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 Ref Fig 4 1 SN1 is Snubber KID 65004 38 R4 1K 12V R5 100 L1 TLP560J TRIAC SM3 JZ47 AC220V 0 1µF 120OHM TO MOTOR SN1 L MICOM Triac Driving 4 AC220V TRIGGER MOTOR INPUT LOW SPEED MEDIUM SPEED HIGH SPEED Fig 4 1 LOW SPEED MEDIUM SPEED HIGH SPEED ...

Page 41: ... INPUT OUTPUT DESCRIPTION There are three Mode according to SW position as following Table 6 1 Selecting Mode 5 13 CC6 0 01 R15 1K R16 10K CN1 EMERGENCY S W MICOM POSITION MODE Close EMERGENCY Open REMOTE Table 6 1 ...

Page 42: ...Power Supply 6 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 42 Vcc 5V 10µF 16V CE2 CC1 104 22 21 MICOM ...

Page 43: ... 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 Reset 7 R9 1K CC3 104 R10 5 6K 5V 18 5V CE1 4 7µF 50 3 7042P MICOM 1 2 RESET IC 4 2V H L t t POWER ON Vcc 5V DELAY TIME FOR POWER ON RESET ...

Page 44: ...ecting Function is as following Table 9 1 30 28 29 27 MICOM CA1 JS3 JS5 R14 1K Test RA R13 1K R12 1K R11 1K JS4 Function Selecting 8 JS6 JS5 JS4 JS3 SHORT Skip Mild Heat 50Hz OPEN Comp err detect High Cool 60Hz Table 9 1 ...

Page 45: ... at the main PCB Fig 3 Disconnect the swing motor connection wire Loosen a screw for fixing ground wire Loosen two screws for fixing the body 4 Removing the Drain Pan After doing above procedures Loosen a screw for fixing body Fig 4 Unhook the right part of Drain Pan 5 Removing the Indoor Coil After doing above procedures Loosen four screws for fixing indoor coil at left and right side Fig 5 Loose...

Page 46: ...44 PROCEDURES PHOTOS 7 Removing the blower After doing above procedures Loosen a screw for fixing holder bearing Remove the blower Fig 8 Fig 7 ...

Page 47: ...ox Loosen four screws for fixing Motor bracket and then remove the Motor 3 Removing Motor Capacitor and Compressor Capacitor Do basic procedure Diconnect lead wire from the Motor capacitor and compressor capacitor Loosen two screws for fixing the capacitor bracket Remove Motor capacitor and compressor capacitor 4 Removing Magnetic Contactor Fig 5 Do basic procedure Disconnect lead wire from Magnet...

Page 48: ...washer Remove fan Remove fan stopper Disconnect Motor lead wire from control box Loosen four screws for fixing Motor bracket and then remove the Motor 3 Removing Motor Capacitor and Compressor Capacitor Do basic procedure Diconnect lead wire from the Motor capacitor and compressor capacitor Loosen two screws for fixing the capacitor bracket Remove Motor capacitor and compressor capacitor 4 Removin...

Page 49: ...47 3 EXPLODED DIAGRAM Indoor Unit DSA 151L DSA 181L DSB 181L ...

Page 50: ...1 IC 9425 DWKC 5C DSB 181L 3108000230 MOTOR ASS Y 1 IC 9425KH 6C DSA 151L 181L 12 3102400900 GRILLE INSERT 1 ABS 13 3100501000 BOX CONTROL 1 ABS V0 14 3107410000 EVA ASS Y 1 15 3101930010 FILTER ELECTRO ASS Y 1 16 3101940010 FILTER CARBON ASS Y 1 17 3101401300 COVER TERMINAL BLOCK 1 ABS 18 3108100100 PAN DRAIN 1 ABS 19 3102200200 FRAME GRILLE 1 ABS 20 3100000100 FILTER PRE R ASS Y 1 Caution In thi...

Page 51: ...M 26 3104395400 F PCB ASS Y 1 27 3108004300 MOTOR STEPPING 2 MP28GA GSP 24SW 06 ST 28 L 400mm 28 3108912320 TERMINAL BLOCK 1 DBW 4P 29 3107400300 EVA BRKT L 1 SGCC T1 0 30 3107800200 LINK VER A 1 ABS 31 3107800400 LINK VER C 1 ABS 32 3107500200 EMBLEM 1 URETANE 33 3105500400 PLT WINDOW SWITCH 1 34 3104500300 PLATE MOUNTING 1 SGCC T0 8 35 3108004310 MOTOR STEPPING 1 MP28GA GSP 24SW 06 ST 28 L 1300m...

Page 52: ...50 4 EXPLODED DIAGRAM Outdoor Unit DSA 151L DSA 181L ...

Page 53: ...010 CONDENSER ASS Y 1 12 7391800011 NUT HEX 1 13 3102600100 HANDLE R 1 PP 14 3104500600 PLATE PARTITION 1 SGCC T1 0 15 310061000P BRACKET SERVICE ASS Y 1 16 3102100200 FOOT 4 SECC T2 0 17 3102600200 HANDLE L 1 PP 18 3101200200 CLAMP WIRE 2 SGCC T1 0 19 3101200100 CLAMP CAPACITOR 1 SGCC T0 8 20 3100016300 PIPE SUCTION ASS Y 1 CU T 0 8 DSA 151L 3100016700 PIPE SUCTION ASS Y 1 CU T 0 8 DSA 181L Cauti...

Page 54: ...Y 1 RCA150A001 DSA 151L 3107120010 COMPRESSOR ASS Y 1 ECB 185211A DSA 181L 26 3105400200 SERVICE VALVE LIQ 1 27 3105400100 SERVICE VALVE GAS 1 28 5SC0202700 POWER RELAY 1 G7L 2A TUB 29 3108912320 TERMINAL BLOCK 1 SN DBW 4P 30 3102101000 FOOT CUSHION 4 NR 31 3107140010 COMP BOLT 3 32 3101500200 RUBBER CUSHION 3 33 7400208411 WASHER PLAIN 3 34 7392801211 NUT LOCK 3 35 7342602011 BOLT HEX 4 36 711250...

Page 55: ...53 DSB 181L u ...

Page 56: ...020 CONDENSER ASS Y 1 12 7391800011 NUT HEX 1 13 3102600100 HANDLE R 1 PP 14 3104500600 PLATE PARTITION 1 SGCC T1 0 15 3100600000 BRACKET SERVICE ASS Y 1 16 3102100200 FOOT 4 SECC T2 0 17 3102600200 HANDLE L 1 PP 18 3101200200 CLAMP WIRE 2 SGCC T1 0 3101202000 CLAMP CORD 1 NYLON 66 19 3101200100 CLAMP CAPACITOR 1 SGCC T0 8 20 3100016700 PIPE SUCTION ASS Y 1 CU T 0 8 DSB 181L for VDE Appliance DSB ...

Page 57: ... 1 CU 25 3107120000 COMPRESSOR 1 CRDQ 0200 PFJ 26 3105400200 SERVICE VALVE LIQ 1 27 3105400100 SERVICE VALVE GAS 1 28 5SC0202700 POWER RELAY 1 G7L 2A TUB 29 3108912320 TERMINAL BLOCK 1 SN DBW 4P 30 3102101000 FOOT CUSHION 4 NR 31 3106000110 BOLT COMP 3 32 3101500200 RUBBER CUSHION 3 33 7400208041 WASHER PLAIN 3 34 7392801211 NUT HEX 3 35 7342602011 BOLT HEX 4 1 2 1 4 1 8 1 4 3 8 ...

Page 58: ...56 5 CONTROL BOX ASSEMBLY DSA 151L DSA 181L DSB 181L 1 CONTROL BOX ASSY ...

Page 59: ... UL1015 18 1 3102704410 12 POWER CORDWS 93 250V 10 16A 1 31013A24B1 13 CABLE CORD DA 5N 1 3101200300 14 CONTROL PCB ASS Y DSA 151L DSA 181L 1 3104300120 DSB 181L COOL 50Hz 1 3104300110 15 HARNESS CONNECTING UL 1007 26 1 3102704900 16 POWER PCB ASS Y DSA 151L DSA 181L DSB 181L 1 3104300210 17 LED PCB ASS Y 15 18K 1 3104300300 18 SWITCH PCB ASS Y 15 18K 1 3104300400 19 SENSOR ID ASS Y PEM KD43C D1 1...

Page 60: ... 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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