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Daewoo DSA-151L Service Manual

Manual is about: Air Conditioner

Summary of DSA-151L

  • Page 1

    Manual de servicio acondicionador de aire tipo split modelo: dsa-181l.

  • Page 2: Contents

    Contents contents 1. Specifications ................................................................................................2 2. Outline and dimensions .................................................................................3 3. Operation ...............................................

  • Page 3: 1. Specifications

    2 1. Specifications model dsa-151l dsa-181l dsb-181l item function cooling class t power supply ac 208~230v, 60hz ac 208~230v, 60hz ac 220~240v, 50hz capacity w 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 power input 1,450w 1,785...

  • Page 4: 2. Outline and Dimensions

    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: Outdoor Unit

    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: Parts of Name and Function

    5 1 parts of name and function indoor unit 3. Operation ◆ dsa-151l/dsa-181l/dsb-181l indoor cover electrostatic filter removes dust particles from the air. Deodorizing filter removes bad smells from the air. Test/emergency/ remote switch slide to select the desired position. Indicators indicate the ...

  • Page 7: Indoor Unit Display

    6 ◆ dsa-151l/dsa-181l/dsb-181l ■ 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”. ■ there is a switch panel at inside of front panel. At the time of operating, open the front panel. Emergency switch can be use...

  • Page 8: Outdoor Unit

    7 outdoor unit ◆ dsa-151l/dsa-181l/dsb-181l air in air out ac cover remove 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...

  • Page 9: Name of Each Button

    8 name of each button 2 remote controller ◆ dsa-151l/dsa-181l/dsb-181l mode sleep on/off timer enter/ cancel fan speed turbo/mild display displays information pertaining to unit. Turbo/mild press to be colder the unit. Timer enter/cancel button press to enter a timer setting or to cancel timer setti...

  • Page 10: Replacing Batteries

    9 replacing batteries 3 remote controller display open the cover after pressing the arrow direction and pulling out. Put the drycell by direction. Close the cover after pushing into arrow direction. 1 2 3 ◆ dsa-151l/dsa-181l/dsb-181l mode indicators (auto/quick/cool/fan/dehumidifier) lights to indic...

  • Page 11: Off-Timer

    10 if you set time in off-timer mode, the unit will stop at the set time. If you set time in on-timer mode, the unit will run at the set time. (1) range of setting temperature: 18~32°c (2) setting temperature: operating temperature of compressor (3) during the time of test operating, fan (indoor, ou...

  • Page 12: Fan Speed (Indoor Unit)

    11 fan speed (indoor unit) (1) motor speed (high speed, normal speed, low speed). (2) remote controller setting fan speed. (auto, l, m, h, natural) (3) relation of operating mode between fan speed. (4) automatic operation if the unit is set in 'auto' mode, the unit operates automatically according t...

  • Page 13: Sleep Mode

    12 (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. (3) to cancel sleep mode, press the sleep button again or press the mode button once.: the sleep indicator wil...

  • Page 14: Indoor Fan Motor Starting

    13 3 min. Time delay of compressor in normal operation, there is a time delay of three minutes between turn off and turning back on including initial power up. When indoor fan motor is on, it always starts at normal speed and then it operates desired speed. Indoor fan motor starting frost prevention...

  • Page 15: Auto Mode

    14 auto mode (1) when the room temperature is higher than 28°c (cooling mode) ! Compressor and lndoor fan @ 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 tha...

  • Page 16: Dehumidification Mode

    15 (1) cooling condition ! Fan speed: high speed @ air discharge direction: fixed # set temperature: 18°c (fixed) $ operation mode: cooling mode % compressor and outdoor fan quick mode (powerful cooling) -1 off on (room temperature-18˚c) 0 dehumidification mode air discharge direction (1) when you t...

  • Page 17: Self-Diagnostic Function

    16 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) error code display patten error contents 1 room air thermistor, connector indoor coil...

  • Page 18: 4. Wiring Diagram

    17 4. Wiring diagram ◆ dsa-151l outdoor unit indoor unit.

  • Page 19

    18 ◆ dsa-181l/dsb-181l.

  • Page 20: Main Electric Parts

    19 ◆ dsa-151l indoor unit outdoor unit 1 main electric parts part name part code spec. Quantity remark fan motor 3964330200 ic-9425 kh 6c 1 fan motor capacitor 3106995010 1.2µf 450vac 0.2a 1 fuse 5fvgb0302r 250v 3a s/b 1 fuse 5fvgd0402s 250v 4a 6its 1 transformer 5epk533110 220v/15v 1 stepping motor...

  • Page 21

    20 ◆ dsa-181l indoor unit outdoor unit part name part code spec. Quantity remark fan motor 3964330200 ic-9425 kh 6c 1 fan motor capacitor 3106995010 1.2µf 450vac 0.2a 1 fuse 5fvgb0302r 250v 3a s/b 1 fuse 5fvgd0402s 250v 4a 6its 1 transformer 5epk533110 220v/15v 1 stepping motor 1 3108004310 mp28ga (...

  • Page 22

    21 ◆ dsb-181l indoor unit outdoor unit part name part code spec. Quantity remark fan motor 3108000300 ic-9425dwkc5c 1 fan motor capacitor 3106995010 1.2µf 450vac 0.2a 1 3106901100 1.2µf 400vac 1 for vde appliance fuse 5fvgb0302r 250v 3a s/b 1 fuse 5fvgd0402s 250v 4a 6its 1 for non appliance transfor...

  • Page 23: 5. Refrigerant Cycle

    22 5. Refrigerant cycle indoor unit evaporator cross flow fan connecting pipe capillary tube dryer condenser propeller fan outdoor unit refrigerant flow service valve service valve accumulator compressor note) if the pipe length exceeds the standard length, add 30g of refrigerant per extra meter. Co...

  • Page 24: 6. Control Block Diagram

    23 6. Control block diagram relay rl1 indoor fan motor power relay compressor outdoor fan motor triac dc12v operating mode fan speed timer selection flap position unit on lamp room air temp. Indoor coil temp. Quick lamp air-clean lamp remote emergency operation signal receiver timer lamp a/d convert...

  • Page 25: 7. Electric Circuit Diagram

    24 1 2 3 i.D.C s comp power relay terminal block trans- former 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 elec...

  • Page 26: Description

    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, th...

  • Page 27: Pcb Circuit Diagram

    2 2 pcb circuit diagram.

  • Page 28

    26.

  • Page 29: 8. Trouble Shooting

    27 8. Trouble shooting outdoor unit does not run?(note. 1) does the compressor run normally? Indoor unit does not run(note 1) check the failure code according to the self diagnostic (note 2) is the unit display mormal? Check the failure code according to the self-diagonostic (note 2) normal check th...

  • Page 30: Self-Diagnostic Function

    28 note 1) ! Neither indoor unit nor outdoor unit runs. Check the following points first. (there are following case in normal operation) a. Is the timer mode set the "timer on". B. Is the timer mode set the "timer-off" and the time had passed? @ neither outdoor fan nor compressor runs while indoor f...

  • Page 31

    29 the power is applied to the unit check the voltage between and of terminal block n l check the breaker or fuse self diagnostic function is on check according to self diagnostic function control p.C.B defect check the indoor unit display is the display all off? Press the on/off switch of remote co...

  • Page 32

    30 check rotation of indoor fan rotate indoor fan by hand check input voltage of fan motor connector at power p.C.B check the winding resistance 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 th...

  • Page 33: Outdoor Fan Do Not Run

    31 outdoor fan do not run check the voltage between and of indoor unit terminal n l check the voltage 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...

  • Page 34: Only Compressor Do Not Run

    32 - check the following at cooling mode check the voltage between and of indoor unit terminal y n check the voltage between and of outdoor unit terminal y n check the magnetic contactor check the wiring of outdoor unit check the compressor (check the winding resistance) check the compressor capacit...

  • Page 35

    33 check the voltage between and of indoor unit terminal n l check the voltage between and of outdoor unit terminal 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...

  • Page 36: Pcb Driving Description

    Pcb driving description.

  • Page 37: Power Supply (1)

    35 power supply (1) 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...

  • Page 38: Oscillation (2)

    36 oscillation (2) 19 20 x-tal 8mhz v dd -10% v ss +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: Sensor(3)

    37 room temperature and evaporator temperature sensor input 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 (12.7k Ω ) and r20 (12.7k Ω ). Relatio...

  • Page 40: Triac Driving (4)

    38 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...

  • Page 41: Selecting Mode (5)

    39 (select s/w 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: Micom Power Supply (6)

    40 micom 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 10 µ f/16v ce2 cc1 104 22 21 micom.

  • Page 43: Reset (7)

    41 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. Reset (7) r9 1k cc3 104 r10 5.6k 5v 18 5v ce1 4.7 µ f/50 3...

  • Page 44: Function Selecting (8)

    42 description selecting 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: Indoor Unit

    43 1 indoor unit 9. Disassembly instructions procedures photos 1. Stop the air conditioner and disconnect the power cord from the wall outlet. 2. Removing the insert grille and frame. ! Loosen three screws for fixing the the insert grille and frame. (pull out the frame cap before loosening three scr...

  • 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: Outdoor Unit

    45 2 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) 2. Removing fan motor (...

  • Page 48

    46 ¡ 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) 2. Removing fan motor (fig 4)...

  • Page 49

    47 3 exploded diagram (indoor unit) ¡ dsa-151l/dsa-181l/dsb-181l.

  • Page 50

    48 ¡ dsa-151l/dsa181l/dsb-181l parts list (indoor unit) no part code part name q'ty spec remark 1 3100400101 body 1 abs 2 3107600100 flap top 1 abs 3 3107600200 flap under 1 abs 4 3106500400 blade ver 16 abs 5 3103000500 holder motor r 1 abs 6 3103000700 holder bearing 1 abs 7 3103000600 holder moto...

  • Page 51

    49 no part code part name q'ty spec remark 21 3100000200 filter pre l ass’y 1 22 3102900100 hinge r-a 1 pom 23 3102900300 hinge l-a 1 pom 24 3100001000 m-pcb ass’y 1 25 3107800100 link ver cam 1 p.O.M 26 3104395400 f-pcb ass’y 1 27 3108004300 motor stepping 2 mp28ga/gsp-24sw-06/st-28 l=400mm 28 3108...

  • Page 52

    50 4 exploded diagram (outdoor unit) ¡ dsa-151l/dsa-181l.

  • Page 53

    51 ¡ dsa-151l/dsa-181l parts list (outdoor unit) no part code part name q'ty spec remark 1 3100800101 cab back 1 secc t1.0 2 3104200500 panel top 1 secc t1.0 3 3100800201 cab front 1 secc t1.0 4 3101800100 fan 1 abs + g/f 5 3102400710 grille discharge 1 pp 6 3100800301 cab side 1 secc t1.0 7 3100300...

  • Page 54

    52 no part code part name q'ty spec remark 21 3100016200 pipe discharge ass’y 1 cu ¡¨ t0.8 dsa-151l 3100016600 pipe discharge ass’y 1 cu ¡¨ t0.8 dsa-181l 22 3104400700 pipe filter 1 23 3104400600 pipe turn 1 cu ¡¨ t0.8 24 3104400800 pipe capillary 1 cu ¡¨ 25 3100030ae0 compressor ass’y 1 rca150a001 ...

  • Page 55

    53 ¡ dsb-181l u.

  • Page 56

    54 ¡ dsb-181l parts list (outdoor unit) no part code part name q'ty spec remark 1 3100800101 cab back 1 secc t1.0 2 3104200500 panel top 1 secc t1.0 3 3100800201 cab front 1 secc t1.0 4 3101800100 fan 1 abs + g/f 5 3102400710 grille discharge 1 pp 6 3100800301 cab side 1 secc t1.0 7 3100300301 pan b...

  • Page 57

    55 no part code part name q'ty spec remark 21 3100016400 pipe discharge ass’y 1 cu ¡¨ t0.8 22 3104400700 pipe filter 1 23 3104400600 pipe turn 1 cu ¡¨ t0.8 24 3104400800 pipe capillary 1 cu ¡¨ 25 3107120000 compressor 1 crdq-0200-pfj 26 3105400200 service valve-liq 1 ¡¨ 27 3105400100 service valve-g...

  • Page 58: Control Box Assembly

    56 5 control box assembly ¡ dsa-151l/dsa-181l/dsb-181l 1 control box assy.

  • Page 59

    57 ¡ dsa-151l/dsa-181l/dsb-181l no part name spec q’ty part code remark 1 control box ass’y dsa-151l/dsa-181l 1 3100058320 dsb-181l 1 3100058210 2 box control-2 abs (version2) 1 3100506900 3 pcb trans ass’y dwa-5423 1 5epk633110 dwa-220v 1 5epv633110 4 screw tapping t2s trs 4x12 mfzn 3 7122401211 5 ...

  • 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.