Daewoo DPB-280LH manual

Ser vice Manual FLOOR ST ANDING AIR CONDITIONER Model: DPB-280LH DAEWOO ELECTRONICS CO., L TD. OVERSEAS SER VICE DEFT .[...]

CONTENTS 1. Installation Guide ...........................................................................................2 2. Specification.................................................................................................. 5 3. Outline ..................................................................................................[...]

2 1. INST ALLA TION GUIDE 1 INST ALLA TION PLACE ◆ Indoor unit ◆ Outdoor unit Secure enough space from the neighboring objects as shown below. This is required to operate the unit efficiently. • Flat and strong place in the room • No obstacles in front of air in/out grille • Easy place to connect drain hose to outside of room • Easy pla[...]

3 3 INST ALLA TION OF INDOOR UNIT 1) Drain hose should maintain downward slope to outside of room. 2) Indoor unit should be fixed firmly with the bracket to avoid falling down. The bracket has several holes to fix the unit any direction needed (fore/back/right/left) 1) Cushion rubbers absorb vibration of outdoor unit 2) The unit must be grounded fo[...]

4 6 ELECTRICAL WIRING SIGNAL LINE SIGNAL LINE SIGNAL LINE SIGNAL LINE MAIN POWER (INDOOR) MAIN POWER (INDOOR) MAIN POWER (INDOOR) MAIN POWER (OUTDOOR) MAIN POWER (OUTDOOR) MAIN POWER (OUTDOOR) (Specification of harness) 3 2 1 Y N L N L Spec 1.25mm 2 1.25mm 2 1.25mm 2 1.25mm 2 1.25mm 2 1.25mm 2 1.25mm 2 2.0mm 2 2.0mm 2 2.0mm 2 Color BLUE BLACK RED B[...]

5 2. SPECIFICA TIONS MODEL DPB-280LH ITEM Function COOLING HEATING Class T Power 220~240V/ 50Hz Capacity W 8,200 8,200 Btu/h 28,000 28,000 Dehumidification l/h - - Running Current A 14 14 Power Input W 2,800 2,800 Starting Current A - Type Scroll Model ZR36K3-PFJ-501 Capacitor 50µF/370V AC Indoor Unit Outdoor Unit Type Sirocco Propeller fan Capaci[...]

4 5 2 7 6 1 3 6 3. OUTLINE 1 INDOOR UNIT ◆ DPB-280LH No Part Name Quantity Description Remarks 1 Connecting Hole 3 ø 60X100 (Left, Right, Back) 2 Evaporator 1 Heat Exchanger 3 Suction Grille 1 Air Inlet 4 Discharge Grille 1 Air outlet 5 Fan Blower 1 Sirocco Type 6 Joint (Gas) 1 OD ø 15.88mm 7 Joint (Liquid) 1 OD ø 9.52mm[...]

7 2 OUTDOOR UNIT ◆ DPB-280LH No Part Name Quantity Description Remarks 1 Service Valve (Liquid) 1 OD ø 9.52mm Flare Type 2 Service Valve (Gas) 1 OD ø 15.88mm Flare Type 3 Service Door 1 4 Fan Guard 1 Fan Protector 5 Fan Blower 1 Propeller type 6 Condenser 1 Heat Exchanger 7 Fan motor 1 Foor propeller fan 8 Compressor 1 Depend on Models 9 Earth [...]

8 1 P ARTS OF NAME AND FUNCTION Indoor Unit 4. OPERA TION MAIN CONTROLS/ REMOTE SENSOR LCD REMOTE CONTROLLER - Operative distance is within 7m from the indoor unit. - Use toward to the remote sensor AIR OUT - According to the operation mode, it is opened/closed automatically. AIR IN - It is to suck warm air. - There is an air filter inside this gri[...]

9 ROOM TEMPERA TURE / DESIRED TEMPERA TURE INDICA TOR - It displays current room temperature and desired room temperature. F AN MODE INDICA TOR AUTO MODE INDICA TOR TIMER/SLEEP INDICA T OR ECONOMY MODE INDICA T OR MODE BUTTON ECONOMY MODE BUTTON ON/OFF BUTTON - Whenever you push this button. It repeats on -> off -> on -> off. AUTO F AN SPE[...]

10 Outdoor Unit OUTDOOR UNIT AIR IN - If there is any obstacle in front of the grille, the efficiency of the unit can be lowered. OUTDOOR UNIT AIR OUT SERVICE V AL VES(GAS TUBE) SERVICE V AL VES(LIQUID TUBE) CAUTION • Do not install the outdoor unit on unstable place like outside wall of building or outside of balcony. In case of falling, it may [...]

11 Name of Each Button 2 REMOTE CONTROLLER MODE SLEEP ON/OFF TIMER ENTER/ CANCEL FAN SPEED TURBO/MILD Display Displays information pertaining to unit. TURBO/MILD Press to be more silent and comfortable room condition TIMER ENTER/CANCEL Button Press to enter a timer setting or to cancel timer setting TIMER ON/OFF Button Press to set the unit off or [...]

12 Replacing Batteries 3 REMOTE CONTROLLER DISPLA Y Slide down the cover to access most of the remote buttons. Slide down further to access the battery compart- ment. Insert two “ AAA ” size Alkaline batteries following the polarity diagram below. 1 2 MODE Indicators (Auto/Quick/Cool/Fan/Dehumidifier/Heat) Lights to indicate the mode selected. [...]

13 If you set time in OFF-T imer Mode, the unit will stop at the set time. If you set time in ON-T imer 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 , Outdoor) and Compressor is running regardless [...]

14 Fan Speed (Indoor Unit) (1) Motor speed (high speed, middle speed, low speed). (2) Remote controller setting fan speed. (Auto, L, M, H, Natural) (3) Relation of operating mode between fan speed. (legned: X-no relation) (4) Automatic Operation If the unit is set in 'AUTO' mode, the unit operates automatically according to the room tempe[...]

15 (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) T o cancel sleep mode, press the SLEEP button again or press the MODE button once.: the SLEEP indicator will disappear in the display . Sleep Mode 0 0.5 1.0[...]

16 Auto Mode (1) In Auto Mode After the indoor fan is operated for 20 seconds in the Auto Mode, the unit will operate automatically by selecting operating Mode according to the room temperature (2) Selecting Operating Mode Again Room temperature meets desired temperature and the compressor stops running over 30 minutes, then the unit selects operat[...]

17 (1) Cooling Mode * When the room temperature is higher than 22˚C or equal to 22˚C 1 Fan Speed: high speed (Fixed) 2 Air discharge direction: The control is available. 3 Set temperature: 18 ° C (Fixed) (1) Heating Mode * When the room temperature is lower than 22˚C 1 Fan Speed: high speed (Fixed) 2 Air discharge direction: The control is avai[...]

18 5. CIRCUIT DIAGRAM ◆ DPB-280LH 1 WIRE CONNECTION OF INDOOR AND OUTDOOR UNIT[...]

19 ◆ DPB-280LH 2 MAIN ELECTRIC P ARTS Object/part No. Motor-compressor Outdoor fan motor Indoor fan motor Thermal protector for fan motor Synchronous motor Stepping motor Dual capacitor for compressor and outdoor fan motor Running capacitor for indoor fan motor Terminal block Transformer Reversing valve Compressor heater AC Control realy Relay Fu[...]

20 3 PCB CIRCUIT DIAGRAM[...]

21 NO Part Code Part Name Quantity Specification 1 3108803400 PIN 3 GP881206-2(187) 2 5FVLB3152L FUSE 1 250V 50T 3.15A 3 3107000600 FUSE CLIP 2 AFC-520 4 3108802500 WAFER 1 YW396-03AVD 5 3108802600 WAFER 1 YW396-03AVD (RD) 6 3108802700 WAFER 1 YW396-03AVD (BK) 7 3108802900 WAFER 1 YW396-05AVD 8 3108803000 WAFER 1 YW500-02V 9 3108801900 WAFER 1 SMW2[...]

22 NO Part Code Part Name Quantity Specification 33 RD-2K200J- RESISTOR 1 1/2W-20J 34 RD-2K390J- RESISTOR 2 1/2W-39J 35 RD-2K121J- RESISTOR 5 1/2W-150J 36 RD-2K102J- RESISTOR 1 1/2W-1KJ 37 CLV-B3104M C-LINE ACROSS 1 275V 104K 38 4EFR-37071 SNUBBER 1 0.1UF 120 300V 39 3105796100 HEAT SHINK 1 33(H)X23X17 40 3106002900 WASHER 1 HEAT SINK øÎ 41 31056[...]

23 Power Supply(1) DESCRIPTION DC Power Supply in circuit needs +12V and +5V . +12V is used for Compressor Driving Relay , T riac Driving Photo T riac, Buzzer Driving, Stepping Motor . AC voltage of secondary Power T ransformer is rectified by Bridge Diode, and it is filtering by Main Condensor CE1. Filtered DC voltage is about +18V , is regulated [...]

24 Room temperature and Evaporator temperature Sensor Input DESCRIPTION Number 23 of Micom is T erminal 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 R37 (12.7K Ω ) and R38 (12.7K Ω ). Relation between temperature and voltage is following T [...]

25 T riac Driving(4) DESCRIPTION Number 32 T erminal of Micom is put out Pulse Output, by way of Buffer it is driving Photo T riac is supplied T rigger Signal. T rigger T est of T riac 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 . N L AC 22[...]

26 DESCRIPTION Signal from Remote Controller put in only Control Data Signal at Micom T erminal of Number 33, which is gotten fid of Carrier (38KHz) from Receive Module. Signal Wave repeat third as following Fig 5-1. But in Secondary W ave Custom Code is Reversed Face. LEADER CODE CUSTOM CODE DATA CODE CHECK SUM TAILER 9ms 4.5ms 16bit 16bit 24bit 8[...]

27 DESCRIPTION MICOM Power is supplied 5V at Number 42 using VDD, Number 19, 20 Using Oscillator, CC7 is noise filter . Micom Power Supply(7) VDD 42 CE4 10 µ F 16V CC5 104 CC7 104 + 5V 41 40 39 22 21 19 OSC 8MHz 20 VSS MICOM[...]

28 DESCRIPTION V oltage less than about 0.8V put in Micom T erminal of Number 18 and then Micom reset. Reset IC detect Power ON and V oltage less than 4.25V , and then send Reset Signal. Reset(8) MICOM 18 + CE5 4.7 µ F 50V IC6 7042P R4 5.6K 5V 4.25V H L t t POWER ON Vcc (+5V) DELAY TIME FOR POWER ON RESET[...]

29 DESCRIPTION Micom 34 T erminal put out Buzzer Driving Pulse, its output is driving Buzzer through Buffer . Ocillatory Frequency of buzzer is selected by internal Micom. This unit is setting at 2KHz. VCC 12V KID 65004 MICOM 34 61 1 R7 1K BZ Buzzer Driving(10) DESCRIPTION Selecting function is as following table 9-1. ✽ When power source is put a[...]

30 DESCRIPTION It detect Zero Cross part of T rans output voltage, T ransistor TR2 is used to put in the Micom. Detail Driving is as following Fig 1 1-1. MICOM TRANS OUTPUT D5 D6 R3 5.6K 1 2 CC8 103 TR2 KRC102M 12 1 2 3 21 R5 10K R6 1K VCC 31 DETECT POINT H The Number 31 of Micom terminal AC18V L Fig 11-1 Zer o Crossing Detect(11)[...]

31 DESCRIPTION There are one Stepping Motor for Flap (up and down) and it is used 4 face Drive Method. It is driving as following Fig 12-1. (Ring Count Method of 8 Status) Ø 4 Ø 3 Ø 2 Ø 1 B + 6 5 4 3 2 1 12V IC4 KID65004 CN11 9 MICOM 10 11 12 M1 FOR SWING Ø 4 Ø 3 Ø 2 Ø 1 Fig 12-1 (Normal Rotating) (Reversed Rotating) Stepping Motor Driving([...]

32 MICOM 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 VDD (XTOUT)P22 (XTIN)P21 (INT5/STOP)P20 P17 P16 (TC2)P15 (PPG)P14 (DVO)P13 (INT2/TC1)P12 (INT1)P11 (INTO)P10 (AIN7)P67 (AIN6)P66 (AIN5)P65 (AIN4)P64 (AIN3)P63 (AIN2)P62 (AIN1)P61 (AIN0)P60 VAREF P77(HSO) P76(HSCK) P75(SO) P74(SI) P73(SCK) P72(PDO/PWM) P71(INT4) P70(INT3/TC3) P07 P06 P05[...]

33 DARLINGTON ARRA YS (KID65004) VOL T AGE REGULA T OR (KIA7805AP-5VDC) VOL T AGE REGULA T OR (KIA7812AP-12VDC) IN1 1 16 OUT 1 IN2 2 15 OUT 2 IN 3 3 14 OUT 3 IN 4 4 13 OUT 4 IN5 5 12 OUT 5 IN6 6 11 OUT 6 IN7 7 10 OUT 7 GND 8 9 COMMON FREE WHEELING DIODES COMMON 10.5K ‰ 7.2K ‰ 3K ‰ OUTPUT GND INPUT 100K 500 100 100 0.3 10K 6K 500 1K 5K 28K 6K [...]

34 RESET IC (KIA 7042P) KIA70 42P OUTLINE INPUT GROUND OUTPUT VCC 1 3 2 OUT GND[...]

35 6. REFRIGERANT CYCLE SERVICE VALVE FILTER COMPRESSOR HIGH PRESSURE SWITCH FAN INDOOR HEAT EXCHANGER M DISTRIBUTER CAPILLARY TUBE UNION OUTDOOR HEAT EXCHANGER INDOOR UNIT OUTDOOR UNIT M Note) If the pipe length exceeds the standard length, add 30g of refrigerant per extra meter . Contents Model Name Cooling Heating Capillary tube (내경× L ×?[...]

36 7. 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 the connecting point of magnetic contactor YES YES Y[...]

37 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 Control Is the indoor unit display all off? Pull ou[...]

38 2 Outdoor Unit Runs but Indoor Unit Do Not Run Check rotation of indoor fan Rotate indoor fan by hand Check input V oltage 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 the[...]

39 3 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 2 L Check outdoor fan motor individually Check the connecting wire Check the connecting wire Check the wiring and voltage within doors Rating voltage [...]

40 4 Only Compressor Do not Run - 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 capacitor Check the connecti[...]

41 5 REMOTE CONTROLLER ASSMBL Y FUNCTIONAL TEST METHOD ERROR No ERROR No ERROR No No No No Ye s Select ON/OFF button Select Mode button Select F AN SPEED button Select F AN DIR. button Power Supply TEST ST AR T Power supply again Check the Following BA TTER Y SPRING MICOM PCB LCD Is Display at the beginning ON? Is Display at the beginning ON? Is it[...]

42 (0.5~24 HOUR) ERROR No Select TIMER ON Button Select T imer Enter Button Select CANCEL Button Select ON/OFF Button Select OFF (T imer) Button Select SLEEP Button Select SLEEP Button TEST OK! Is LCD display OFF? Is it normal display? TIMER Is all display OFF? Is it normal? SLEEP MODE Display ON? Is display at the beginning ON? ERROR No ERROR No E[...]

8. EXPLODED DIAGRAM 1 INDOOR UNIT[...]

[...]

44 NO Part Code Part Name Quantity Remarks 1 3100090100 ASSY CABNET BODY 1 2 3100042301 BASE MOTOR ASSY 1 3 3100602801 BRACKET PAN DRAIN 1 4 3108008600 MOTOR IDU 1 5 3101501900 CUSHION MOTOR 3 6 3106600210 SCROLL HOUSING 1 7 3106903100 CAPACITOR MOTOR IDU 1 8 3100025000 BLOWER ASSY 1 9 3105200300 WASHER STOPPER 1 10 3100301600 BASE 1 11 3101501100 [...]

45 NO Part Code Part Name Quantity Remarks 33 3100604800 BRACKET FRONT R 1 34 3102201600 FRAME DISCHARGE 1 35 310P40086E SWING MOTOR ASSY 1 36 3108005300 MOTOR STEPPING 1 37 3101101300 CASE MOTOR 1 38 3100702100 BUSHING MOTOR 1 39 3106501430 BLADE HORIZONTAL 1 5 40 3106501530 BLADE HORIZONTAL 2 1 41 3107801000 LINK GUIDE R 1 42 3107802200 LINK M 1 [...]

2 OUTDOOR UNIT[...]

[...]

47 NO Part Code Part Name Quantity Remarks 1 3100041704 BASE PAN PAINT ASSY 1 2 3107103000 COMPRESSOR ASSY 1 3 3107103200 CUSHION COMP 4 4 7400208411 WASHER PLAIN 4 5 7392801211 NUT LOCK 4 6 3102800300 CRANKCASE HEATER 1 7 3100031223 CONDENSER ASSY 1 8 3102402100 GRILLE COND 1 9 3100041100 GUIDE POST P/T ASSY 1 10 3100041201 BRK SERVICE P/TAS 1 11 [...]

DAEWOO ELECTRONICS CO., L TD. 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 DA TE: APR.1999[...]