Daewoo DSB-070LH Service Manual Download

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Caution

: In this 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).

S/M No

DSB070LH10_2

Summary of Contents for DSB-070LH

Page 1: ...ts 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 s...

Page 2: ...t Cycle 32 6 Control Block Diagram 33 7 Electric Circuit Diagram 34 8 Trouble Shooting 36 9 Key Components of Electronic Circuit 62 10 Disassembly Instructions 65 1 Indoor Unit 65 2 Outdoor Unit 68 3...

Page 3: ...ype Rotary Model QB 134PL 12B Capacitor 25 F 400VAC Indoor Unit Outdoor Unit Type Cross flow fan Propeller fan Capacitor 1 0 F 400VAC 1 8 F 400V Motor Model Number IC 8417DWKF5A IC 9625DWLF5A Control...

Page 4: ...100A001 QK 185PN13B Capacitor 30 F 450VAC 35 F 400VAC Indoor Unit Outdoor Unit Type Cross flow fan Propeller fan Capacitor 1 0 F 400VAC 1 8 F 400V Motor Model Number IC 8417DWKF5A IC 9630DWLF5A Contro...

Page 5: ...01 Capacitor 35 F 400VAC Division Indoor Unit Outdoor Unit Type Cross flow fan Propeller fan Capacitor 1 0 F 400VAC 3 5 F 400VAC Motor Model Number IC 8428DWKG7C IC 9430DWLC5B Control Capillary Charge...

Page 6: ...EXC Capacitor 45 F 400VAC Division Indoor Unit Outdoor Unit Type Cross flow fan Propeller fan Capacitor 2 F 400VAC 5 F 400VAC Motor Model Number IC9430DWKG7A 05ME986DERC Control Capillary Charge Q ty...

Page 7: ...6 750 Plate Mounting REMOCON Connecting Pipe Grille Insert 174 245 REMOTE CONTROLLER Frame Grille Body Plate Mounting 2 OUTLINE AND DIMENSIONS 1 I N D O O R U N I T DSB 070LH DSB 091LH...

Page 8: ...7 REMOCON Filter L Filter R Grille Insert Frame Grille Body Plate Mounting Connecting Pipe Plate Mounting 406 194 285 925 REMOTE CONTROLLER DSB 121LH 122LH...

Page 9: ...8 256 549 654 2 O U TD O O R U N I T DSB 070LH DSB 091LH DSB 121LH DSB 122LH After Inlet Inlet Outlet Outlet Foot Foot Cushion Handle Cabinet Side Panel Top Guide Support Service Valve Cabinet Front...

Page 10: ...9 Cabinet Side Handle Cabinet Front Foot 264 334 Panel Top Cabinet Back 552 572 Inlet AIRAIR Inlet Outlet Foot Cushion Service Valve 666 DSB 121LH 122LH Before...

Page 11: ...Connecting Pipe Body Frame Grille Grille Insert Plate Mounting 430 710 1080 Filter L Filter R REMOCON DSB 240LH 10...

Page 12: ...Inlet 380 699 323 foot Service valve 873 Cabinet front Service Cover Cabinet Side DSB 240LH 11...

Page 13: ...or Unit 3 OPERATION DSB 070LH DSB 091LH REMOTE CONTROLLER Electrostatic Filter option Deodorizing Filter option Air Inlet Remote Controller Receiver Power Plug Remote Controller Fan Direction Up Down...

Page 14: ...Unit DSB 121LH 122LH Power Plug Electrostatic Filter Deodorizing Filter Air Inlet Antibacterial Filter Air Outlet Fan Direction Up Down Remote Controller Remote Controller Receiver Lamp RE MO TE CO NT...

Page 15: ...itch panel at inside of Front 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 con...

Page 16: ......

Page 17: ...perating 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 Timer Yello...

Page 18: ...17 Outdoor Unit DSB 070LH DSB 091LH DSB 121LH DSB 122LH After Air Inlet Side Back Connection Wire Connecting Pipe Drain Hose Air Outlet...

Page 19: ...tdoor Unit DSB 121LH DSB 122LH Before NOTE How to remove Top Panel 1 Loosen the screw at left and right side 2 Push the three parts op Front and Back sides like figure orderly 3 Unhook the locking par...

Page 20: ...19 DSB 240LH Air Inlet Air Outlet Connection Pipe Connection wire Drain Hose...

Page 21: ...nit of or on time 0 5 1 1 5 2 2 5 3 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 FAN D...

Page 22: ......

Page 23: ...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 1 In the case of receiving ON OFF signal beep be...

Page 24: ...legned X no relation 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 0 C L M H 1 C 2 C...

Page 25: ...n the display Sleep Mode Emergency Operation 0 0 5 1 0 HOUR COOLING CYCLE DT 0 5 C 0 5 C 0 5 C 0 0 5 1 0 HOUR HEATING CYCLE DT 0 5 C 0 5 C 0 5 C Frost Prevention of Indoor Unit When the unit operates...

Page 26: ...esired temperature and the compressor stops running over 30 minutes then the unit selects operating Mode again 3 min Time Delay of Compressor In normal operation there is a time delay of three minutes...

Page 27: ...et temperature 18 C Fixed 4 Compressor and Outdoor Fan The air discharge direction procedure is below Fixed Up Down Up Down Fixed The option is LEFT RIGHT direction Dehumidifica tion Mode Air Discha r...

Page 28: ...ERN CASE NOTE Room Sensor open or Short Continuously woorking to fix room temperature 18 C in heating mode Continuously woorking to fix room temperature 32 C in cooling mode I D coil sensor open or sh...

Page 29: ...BLK YEL GRN CAPACITOR OUTDOOR TERMINAL BLOCK INDOOR TERMINAL BLOCK YEL RED S C R COMPRESSOR FAN HERM C O D FAN 4WAY 1 1 1 1 BLK BLK RED RED BLU ORG RED BLK RED PINK BLU ORG YEL YEL WHT BLK BRN RED YEL...

Page 30: ...5 2 BLU BLU WHT YEL GRN YEL GRN RED BRN BRN BRN POWER CORD BLU BLU WHT BLU RED RED ORG YEL PNK BLU GRN YEL GRY BRN BLK FUSE CN1 BLU YEL GRN YEL BLK R S C FAN MOTOR CAPACITOR INDOOR FAN MOTOR YEL GRN Y...

Page 31: ...1 Stepping Motor 3108000100 MP28GA L 400mm 1 Terminal Block 3108912301 SN DBW 05P 1 Compressor 3100030CE0 RCB150A001 1 Fan Motor 3108000800 IC 9430DWLC5A 1 Dual Capacitor 3109500700 3 5 25 F 400VAC 1...

Page 32: ...5EPV050120 230V 50Hz 1 Stepping Motor 3108007600 GSP 24RW 062 1 Terminal Block 3108912320 SN DBW 062 1 Compressor 3100068201 AWG 5530EXC 1 Fan Motor 3108007400 OSME986DERC 230 50 1 Dual Capacitor 310...

Page 33: ...ts Model Name Capillary Tube Cool Heat Charge Quantity DSB 070LH ID 1 78 x OD 3 2 x 500L ID 1 78 x OD 3 2 x 700L 900 g DSB 091LH ID 1 8 x OD 3 2 x 800L ID 1 78 x OD 3 2 x 1 000L 1 150 g DSB 121LH 122L...

Page 34: ...p Air clean lamp Quick 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 Tran...

Page 35: ...34 7 ELECTRIC CIRCUIT DIAGRAM DSB 070LH DSB 091LH DSB 121LH DSB 122LH 1 ELECTRIC CIRCUIT DIAGRAM...

Page 36: ...e more the relay and triac are turn off and the unit stops operation 3 The unit turns on or off according to the temperature set point by sensing the room air temperature through thermistor 4 If the f...

Page 37: ...k 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 Chec...

Page 38: ...uns Check following points first There are following cases in normal operation a Is the temperature set point suitable b Has the 3 minutes time guard for compressor operated Error Code 1 When the comp...

Page 39: ...t does not run The power is applied to the unit Check the voltge between and of terminal block Y L Check the Breaker or Fuse Self Diagnostic function is ON Check according to self Diagnostic function...

Page 40: ...ck the fan motor capacitor Check the connecting wire of indoor fan motor Run again Check the starting of indoor fan motor Run again Check the Fan Motor bearing and fan Check the power P C B The circui...

Page 41: ...4 During dehumidifier mode Outdoor Fan and Compressor Do Not Check the voltge between and of indoor unit terminal Y L Check the voltge between and of outdoor unit terminal Y L Check the voltge between...

Page 42: ...ck the compressor Check the winding resistance Check the compressor capacitor Check the connecting wire between indoor and outdoor Change the control P C B Change the compressor Check the control P C...

Page 43: ...PCBDRIVINGDESCRIPTION...

Page 44: ...1 PCB CIRCUIT DIAGRAM DSB 070LH DSB 091LH DSB 240LH...

Page 45: ......

Page 46: ...DSB 121LH DSB 122LH...

Page 47: ......

Page 48: ...A C ELEC 10MF 16V SS 1 EA CL 3108803500 PIN GP881206 2 250 1 EA CL1 CLV B3104M C LINE ACROSS 275V 104K PILKOR 1 EA CL2 CLV B3104M C LINE ACROSS 275V 104K PILKOR 1 EA CLIP 3107000600 FUSE CLIP AFC 520...

Page 49: ...R25 RD 4K102J R CARBON FILM 1 4 1K OHM J 1 EA R26 RD 4K102J R CARBON FILM 1 4 1K OHM J 1 EA R27 RD 4K102J R CARBON FILM 1 4 1K OHM J 1 EA R28 RD 4K102J R CARBON FILM 1 4 1K OHM J 1 EA R29 RD 4K102J R...

Page 50: ...3108802000 WAFER SMW250 06 WHITE 1 EA CN6 3108802000 WAFER SMW250 06 WHITE 1 EA 181L LH CN7 3108801100 WAFER 5267 02A 1 EA 122LH 181LH CN8 3108804500 WAFER 5267 04A 1 EA D1 DZN4148FTB DIODE 1N4148 AU...

Page 51: ...EA R7 RD 4K102J R CARBON FILM 1 4 1K OHM J 1 EA R8 RD 4K102J R CARBON FILM 1 4 1K OHM J 1 EA R9 RD 4K102J R CARBON FILM 1 4 1K OHM J 1 EA RA1 RA8K5103J RESISTOR ARRAY 6A 103J 1 EA RA2 RA8K3103J RESIST...

Page 52: ...N4004A AUTO 52MM 1 EA D3 DZN4004A DIODE KN4004A AUTO 52MM 1 EA D4 DZN4004A DIODE KN4004A AUTO 52MM 1 EA D5 DZN4004A DIODE KN4004A AUTO 52MM 1 EA D6 DZN4004A DIODE KN4004A AUTO 52MM 1 EA FUSE 5FVLB3152...

Page 53: ...HOLDER 1 EA SW1 5S40202000 S W PUSH JPS2281 1 EA LED PCB ASS Y MODEL 122L LH 080M H No PART CODE PART NAME SPEC Q TY UNIT REMARK CC1 CXCH1H103M C CERA 103J 50 20 1 EA CN1 3108804600 WAFER SMAW250 07...

Page 54: ...out 18V is regulated 12V DC by Regulator IC7812 And it is regulated 5V DC by Regulator IC7805 VAR is serge filter and CC1 CC2 CC3 is Noise filter AC 220V CL1 275V 104K VAR FUSE1 3 15A POWER TRANS D2 C...

Page 55: ...is put in 5V by ratio between R10 12 7K and R11 12 7K Relation between temperature and voltage is following Table 3 1 CC5 6 is Noise filter Temperature C No 1 No 3 5 1 127 1 127 0 1 378 1 378 5 1 650...

Page 56: ...c 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 220V TO MOTOR T1 SM3JZ47 L1 1 2 130 H 3A...

Page 57: ...STOM CODE DATA CODE CHECK SUM TAILER 9ms 4 5ms 16bit 16bit 24bit 8bit Fig 5 1 Fig 5 2 BIT STRUCTURE Remote Controller 5 0 56ms 0 56ms 1 69ms 1 12ms 2 25ms bit 0 bit 1 Selecting Mode 6 SELECT S W INPUT...

Page 58: ...PTION MICOM Power is supplied 5V at Number 42 using VDD Number 19 20 Vsing Oscillator CC13 is noise filter Micom Power Supply 7 VDD 42 CE5 10 F 16V CC11 104 CC13 104 5V 41 40 39 22 21 19 OSC 8MHz 20 V...

Page 59: ...com Terminal of Number 18 and then Micom reset Reset IC detect Power ON and Voltage less than 4 25V and then send Reset Signal Reset 8 R13 5 6K 1K R12 18 CC9 CE4 4 7uF 50V IC5 7042P 10 3 MICOM 4 25V H...

Page 60: ...input is recognized And when the unit is running the microcomputer ignore variation of funtion selection input model JS3 JS2 JS1 1K 14 15 16 30 29 28 41 40 39 27 26 1K 1K 1K 1K JS5 JS4 1K 1K 1K 1K 1K...

Page 61: ...s used to put in the Micom Detail Driving is as following Fig 11 1 R19 is Resistance to limit current MICOM TRANS OUTPUT D5 D6 R2 5 6K 1 2 CC4 103 TR1 KRC120M 1 2 1 2 3 2 1 R3 10K R27 1K VCC 31 DETECT...

Page 62: ...nd down and it is used 4 face Drive Method It is driving as following Fig 12 1 Ring Count Method of 8 Status 4 3 2 1 B 6 5 4 3 2 1 12V IC6 KID65004 CN13 1 MICOM 2 3 4 M1 FOR SWING 4 3 2 1 Fig 12 1 Nor...

Page 63: ...Check the Following BATTERY SPRING MICOM PCB LCD Is Display at the beginning ON Is Display at the beginning ON Is it normal Is it normal Is it normal 2 REMOTE CONTROLLER ASSMBLY FUNCTIONAL TEST METHO...

Page 64: ...Button Select ON OFF Button Select OFF Timer 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...

Page 65: ...O P76 HSCK P75 SO P74 SI P73 SCK P72 PDO PWM P71 INT4 P70 INT3 TC3 P07 P06 P05 P04 P03 P02 P01 P00 TEST RESET XIN XOUT VASS VSS 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 Steppping...

Page 66: ...IODES COMMON 10 5K 7 2K 3K OUTPUT GND INPUT 100K 500 100 100 0 3 10K 6K 500 1K 5K 28K 6K 30pF 2K 5K 200 240 1 4 K 2 7 K 3 3 K 0 19K INPUT OUTPUT GND SCHEMATIC DIAGRAM 1 2 3 Fin 2 is ground for Cose 22...

Page 67: ...64 5 U9 KIA7042P RESET IC KIA70 42P OUTLINE INPUT GROUND OUTPUT VCC 1 3 2 OUT GND...

Page 68: ...connection at the Control PCB 4 Remove the select switch from connection at the Control PCB 5 Loosen a screw for fixing ground wire 6 Remove the Control Box 4 Removing the Drain Pan Fig 4 1 Disconnect...

Page 69: ...e from connection at the Control PCB 4 Remove the select switch from connection at the Control PCB 5 Loosen a screw for fixing ground wire 6 Remove the Control Box 4 Removing the Drain Pan Fig 4 1 Dis...

Page 70: ...onnect the stepping motor lead wire from connection at the Control PCB 4 Remove the select switch from connection at the Control PCB 5 Loosen a screw for fixing ground wire 6 Remove the Control Box 4...

Page 71: ...ig 3 1 Loosen the Nut for fixing the Propeller Fan 2 Remove the Plain Washer 3 Remove the Propeller Fan 4 Removing the Motor ODU Fig 4 1 Loosen four screw at Bracket Motor 2 Disconnect the wire at Con...

Page 72: ...n the Nut for fixing the Propeller Fan 2 Remove the Plain Washer 3 Remove the Propeller Fan 4 Removing the Motor ODU Fig 4 1 Loosen four screw at Bracket Motor 2 Disconnect the wire at Control Panel a...

Page 73: ...ving the Propeller Fan Fig 3 1Loosen the screw for fixing the motor bracket 2Remove the Plain Washer 3Remove the Propeller Fan 4 Temove the panel control Fig 4 1Disconnect the wire at control panel 2L...

Page 74: ...71 3 EXPLODED DIAGRAM Indoor Unit DSB 070LH DSB 091LH...

Page 75: ...CONTROL PCB ASS Y 1 19 5 3108912310 TERMINAL BLOCK 1 SN DBW 05P 19 6 3104896300 SENSOR ID ASS Y 1 PTM KD 43C D2 19 7 3102797910 HARNESS 1 I D EARTH 19 8 31013A24B1 POWER CORD ASS Y 1 16A 250V 19 9 71...

Page 76: ...73 DSB 121LH...

Page 77: ...0700 BUSHING R 1 POM 13 3107600300 FLAP 1 ABS 14 3108000100 MOTOR STEPPING 1 MG28GA 15 3100038210 CONTROL BOX ASS Y 1 BUYER 15 1 3100503101 BOX CONTROL 1 P P G F30 15 2 5EPV050100 TRANS FORMER 1 DWA22...

Page 78: ...AME C 1 ABS 21 3100900800 CAP FRAME R 1 ABS 22 3101401701 COVER TER BLOCK 1 ABS 23 3100017800 FILTER ELECTRO ASS Y 1 24 3100017900 FILTER CARBON ASS Y 1 25 3100017700 FILTER PRE ASS Y 2 26 REMOCON ASS...

Page 79: ...76 EXPLODED DIAGRAM INDOOR UNIT DSB 240LH CONTROL BOX ASSY...

Page 80: ...NG 1 T2 PAN 4X8 MFZN 17 3107600500 FLAP UP 2 DSB 240L LH 18 3107600600 FLAP DOWN 1 DSB 240L LH 19 3107801700 LINK FLAP 1 DSB 240L LH 20 3100702000 BUSHING 2 DSB 240L LH 21 3103200800 HOSE DRAIN ASSY 1...

Page 81: ...0L LH 41 7172401211 SCREW TAPPING 2 TT2 TRS 4 12 MFZN 42 3102201400 FRAME GRILLE 1 DSB 240L LH 43 3104512400 PLATE LED 1 PC SHEET T0 2 44 3104510200 PLATE SWITCH 1 PC SHEET T0 2 45 3103401400 KNOB SWI...

Page 82: ...79 30 29 23 31 39 22 21 22 38 17 6 18 33 10 16 28 5 34 42 32 9 8 7 4 2 1 3 35 21 37 25 41 24 40 27 26 39 36 4 EXPLODED DIAGRAM Outdoor Unit DSB 070LH DSB 091LH DSB 121LH DSB 122LH After...

Page 83: ...COMP RCB150A001 7 3100602200 BRACKET SERVICE 1 SECC T1 2 8 3105400700 SERVICE VALVE 1 1 2 9 3105400800 SERVICE VALVE 1 1 4 10 3104410710 PIPE COND IN ASS Y 1 C1220T 070LH 091LH 121H 070LH LG COMP QB13...

Page 84: ...BLOCK 1 SN DBW 05P 3109501201 1 8 25uF 400VAC 070LH LG COMP QB134PL12B 26 3109502030 CAPACITOR DUAL 1 1 8 35uF 400VAC 091LH LG COMP QK185PN13B 3109502010 1 8 30uF 400VAC 091LH DW COMP RBB100A00A 31095...

Page 85: ...82 DSB 121LH DSB 122LH Before...

Page 86: ...800 PIPE REVERSING ASS Y 1 14 3100037800 FILTER ASS Y 1 C1220T 15 3104503800 PLATE PARTITION 1 SBHG1 16 3100800601 CABINET BACK 1 A E S or ABS 17 3100601901 BRACKET MOTOR 1 SBHG1 18 3108000810 MOTOR O...

Page 87: ...1 P P TALK30 24 3101401900 COVER GRILLE 1 A E S or ABS 25 3104201100 PANEL TOP 1 A E S or ABS 26 3102600300 HANDLE 1 A E S or ABS 27 3104895000 O D SENSOR ASS Y 1 PTM KD43C D3 28 3102100710 FOOT CUSH...

Page 88: ...85 DSB 240LH 24 20 18 15 16 6 9 10 3 1 11 13 14 12 25 24 4 5 8 7 23 16 1 16 3 16 6 16 4 16 2 16 5 21 2 2...

Page 89: ...C M Z22 T0 8 H P 16 1 3104201601 PANEL CONTROL 1 SGCC M Z22 T0 8 16 2 3108912330 TERMINAL BOLCK 1 SN DBW 6P 16 3 3101202000 CLAMP CORD 1 NYLON66 VDE 16 4 3109508100 CAPACITOR DUAL 1 5 45MF 400VAC 16 5...

Page 90: ...87 5 CONTROL BOX ASSEMBLY 4 3 q 0 5 L Y 1 2 6 1 e w 7 8 9 2 DSB 070LH DSB 091LH...

Page 91: ...CORD ASS Y 1 16A 250V 7 3102797610 HARNESS 1 I D COMP 8 3102797150 HARNESS 1 I D 4WAY VALVE 9 3102704400 HARNESS 1 O D MOTOR 10 3102797910 HARNESS 1 I D EARTH 11 3102704000 HARNESS 1 POWER 12 31027022...

Page 92: ...89 DSB 121LH DSB 122LH...

Page 93: ...WA220A 50 60HZ 8 3106900300 CAPACITOR SH M B 1 1 0 F 400VAC H1 3102797610 HARNESS I D COMP 1 H2 3102797500 HARNESS LED PCB 1 H3 3102797410 HARNESS MODE SELECT 1 H4 3102797910 HARNESS I D EARTH 1 S 310...

Page 94: ...91 DSB 240LH 3 13 7 6 9 10 5 8 7 2 12 11 4...

Page 95: ...4010 HARNESS POWER 1 UL1015 16 8 3102702200 HARNESS TH3 1 TH 3 1 9 3102704430 HARNESS OD SIGNAL 1 UL1015 18 10 3102704420 HARNESS REVERSING V 1 UL1015 18 11 3104896300 SENSOR ID ASSY 1 NTM KD43C D1D2...

Page 96: ...CO LTD 686 AHYEON DONG MAPOGU SEOUL KOREA C P O BOX 8003 SEOUL KOREA TELEX DWELEC K28177 8 CABLE DAEWOOELEC FAX 82 2 364 5588 TEL 82 2 360 7114 8114 http www dwe daewoo co kr S M NO DSB070LH10_2 PRIN...

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