Daewoo DMB-1812LH Service Manual
  1. Manuals
  2. Brands
  3. Daewoo Manuals
  4. Air Conditioner
  5. DMB-1812LH
  6. Service manual
Daewoo DMB-1812LH Service Manual

Daewoo DMB-1812LH Service Manual

Dual & split system air conditioner
Hide thumbs
Table of Contents

Advertisement

Quick Links

Contents
CONTENTS
1. Specifications..........................................................................................................2
2. Outline and Dimensions .........................................................................................3
3. Installation Section..................................................................................................6
4. Operation ..............................................................................................................23
5. Wiring Diagram.....................................................................................................36
6. Refrigerant Cycle..................................................................................................38
7. Control Block Diagram .........................................................................................39
8. Trouble Shooting...................................................................................................41
9. Key Components of Electronic Circuit .................................................................71
10. Disassembly Instructions .....................................................................................75
1) Indoor Unit ........................................................................................................75
2) Outdoor Unit .....................................................................................................77
3) Exploded Diagram (Indoor Unit)......................................................................78
4) Exploded Diagram (Outdoor Unit)...................................................................83
5) Control Box Assembly......................................................................................85

Advertisement

Table of Contents
loading

Related Manuals for Daewoo DMB-1812LH

Summary of Contents for Daewoo DMB-1812LH

  • Page 1: Table Of Contents

    Contents CONTENTS 1. Specifications......................2 2. Outline and Dimensions ..................3 3. Installation Section....................6 4. Operation ......................23 5. Wiring Diagram.....................36 6. Refrigerant Cycle....................38 7. Control Block Diagram ..................39 8. Trouble Shooting....................41 9. Key Components of Electronic Circuit ..............71 10. Disassembly Instructions ..................75 1) Indoor Unit ......................75 2) Outdoor Unit .....................77 3) Exploded Diagram (Indoor Unit)..............78...

  • Page 2: Specifications

    1. SPECIFICATIONS DMB-1812LH MODEL DMB-1812LH (9K) DMB-1812LH (12K) DMB-1812LH (9K+12K) Function Cooling Heating Cooling Heating Cooling Heating Class Power AC 220-240V, 50Hz 2637.6 2637.6 3516.8 3516.8 5275.2 5275.2 Capacity Btu/h 9000 9000 12000 12000 18000 18000 Dehumidification 1.15 2.10 3.25...
  • Page 3 Plate Mounting Connecting Pipe REMOTE CONTROLLER REMOCON Grille Insert Frame Grille Body Plate Mounting...
  • Page 4 Connecting Pipe Plate Mounting REMOTE CONTROLLER REMOCON Plate Mounting Body Frame Grille Grille Insert Filter - L Filter - R...
  • Page 5 Inlet Foot Outlet Cabinet Front Cover Service Cabinet Side Panel Top Guide Post Outlet Service Valve...

  • Page 6: Installation Section

    Installation Section BASIC ACCESSORIES This Installation section explains how and where to connect this new air conditioner. Please read make sure all acces- sories are included as shown below and read manual thoroughly. This Installation section is provided to assist the per- son knowledgeable in air conditioner installation and should not be installed by anybody who is not thoroughly familiar with this type of installation.
  • Page 7 OPTIONAL ACCESSORIES ACCESSORIES NOT SUPPLIED WITH THE UNIT: No. Description Part No. Material Size Remark Drain Hose Extension 3103200400 ID19.6 X 2m PVC Pipe Tape 2TQ1008000 80W X 0.1T X 3.5m 1/2", 1/4" Copper Tube Copper Tubing Extension 3100002600 Insulator Plate 3103301000 F-US 225 X 120 X 8T...
  • Page 8 INSTALLATION DIAGRAM Below is an overview for the connection of the Indoor unit to the Outdoor unit. The pages following will give detailed instructions for full installation. Remember to read the complete Installation section and follow all the safety instructions fully when installing the Indoor and Outdoor units.
  • Page 9 2. Determine if the hole is to be made at the left or right and make sure it is strong enough to hold indoor unit. hole location. Select an approximate position for the unit, taking the required distances away from walls/AC outlet into consideration. DMB-1812LH 150 mm 60 mm (9000BTU/h) DMB-1812LH 150 mm...
  • Page 10 INSTALLING THE INDOOR/OUTDOOR WIRE TO THE INDOOR UNIT FOR AC CONNECTION DMB-1812LH(9000BTU/h) The Indoor/Outdoor wire is used to supply AC from the Indoor unit to the Outdoor unit. To install the indoor/outdoor wire, follow the procedures below. 1. Open the connection cover on the indoor unit to 2.
  • Page 11 Blue Green BLACK/GRAY Signal BLACK/GRAY color of wires Yellow/ Brown Blue Green The used connection cable connected to indoor and outdoor unit must be: 1) H07RN-F 3G1.5mm (NOT INCLUDED) Housing & Terminals on the outdoor unit Terminals DMB-1812LH DMB-1812LH (9000BTU/h)
  • Page 12 DMB-1812LH(12000BTU/h) The Indoor/Outdoor wire is used to supply AC from the Indoor unit to the Outdoor unit. To install the indoor/outdoor wire, follow the procedures below. 1. Open the connection cover on the indoor unit to 2. Fish the indoor/outdoor wire from the rear of the access the connection area.
  • Page 13 Yellow/ Brown Blue Green BLACK/GRAY BLACK/GRAY Signal color of wires Yellow/ Brown Blue Green The used connection cable connected to indoor and outdoor unit must be: Housing & Terminals on the 1) H07RN-F 3G1.5mm (NOT INCLUDED) outdoor unit Terminals DMB-1812LH(12000BTU/h)
  • Page 14 MOUNTING (INDOOR UNIT) The Indoor unit must be mounted before connecting the indoor/outdoor wire, drain hose and copper tubing. To mount, follow the procedures below: 1. The tubing can be extended in 4 directions as shown 2. Make sure the drain hose and copper tubing are below.
  • Page 15 CONNECTING COPPER TUBES To connect the copper tubes, follow the procedures below: 1. Remove the flare nut stoppers from the inside unit. 2. Remove the plastic stoppers from the tubing. Connect Determine the location of the copper tubing and the large and small copper tubing to the respective where the bends will be.
  • Page 16 Brown Yellow/Gre Blue Connection Cover DMB-1812LH 3. Connect the wires to the housing and terminals on the control board individually as the following. Terminals Terminals Housing & Terminals on the Housing & Terminals on the...
  • Page 17 Connect the Blue wire to “L” connection, Brown wire to the “Y” connection, the Yellow Green wire to the “ ” connection Signal The used connection cable connected to indoor and outdoor unit must be ; 1) H07RN-F 3G 1.5mm X2 (NOT INCLUDED) DMB-1812LH...
  • Page 18 TAPING UP THE WIRE/TUBES/HOSE After running the wire, hose and tubing outside, tape them up as shown below to insulate. 1. Tape the two copper tubes, drain hose (and the 2. Begin wrapping from the point the tubing comes out of electrical wiring if local codes permit) together with the outdoor unit and continue to the hole in the wall.
  • Page 19 Before Air Purging Indoor Unit After connecting the power supply, open the solenoid valve by pressing the install switch on the control panel before air purging or refrigerant charging. Outdoor Unit AIR PURGING After operating the 9K and the 12K indoor units at the same time, execute air purging or refrigerant charging.
  • Page 20 CAUTION: To avoid nitrogen entering the refrigerant system in a liquid state, the top of the nitrogen gas cylinder must be higher than its bottom when you pressurize the system. Usually, the cylinder is used in a vertical standing position. 4.
  • Page 21 TEST RUN Check that all tubing and wiring have been completed correctly. Check again that the wide and narrow tube service valves are fully opened. Turn on the power and run the system. Service Valve Construction • Valve Position Closed The valve systems of both the wide and narrow tubes are turned all the way in.
  • Page 22 3-Way Valve 3-way valve(Liquid Side) 3-way valve(Gas Side) Works Shaft position Shaft position Service port Shipping Closed Closed Closed (with valve cap) (with valve cap) (with cap) Air purging Open Closed Open (Installation) (counter-clockwise) (clockwise) (push-pin or with vacuum pump) Operation Open Open...

  • Page 23: Operation

    4. OPERATION NAME AND FUNCTION OF PARTS DMB-1812LH(9000BTU/h) Indoor Unit Deodorizing Filter Electrostatic Filter removes bad smells removes dust and from the air Air Inlet particles from the air Signal wire Lamp Fan Direction Remote Antibacterial Filter (Up, Down) Controller...
  • Page 24 DMB-1812LH(12000BTU/h) Indoor Unit Electrostatic Filter Air Inlet Deodorizing Filter Electrostatic Filter Air Inlet Deodorizing Filter removes dust and removes bad smells particles from the air from the air Signal wire Antibacterial Fan Direction Air Outlet Antibacterial Air Outlet Fan Direction...
  • Page 25 DMB-1812LH(9000BTU/h) Indoor Unit Display Switch Panel Remote Control Signal Receiver This place is the part to receive the signal if it receives the signal, you can hear the signal “beep”. EMR. REMOCON When the remote controller is lost or out- of-order, push the emergency button (EMR.)
  • Page 26 DMB-1812LH(12000BTU/h) Indoor Unit Display Switch Panel Remote Control Signal Receiver EMERGENCY REMOTE EMERGENCY REMOTE This place is the part to receive the signal if it receives the signal, you can hear the signal “beep”. QUICK TIMER CLEAN When the remote controller is lost or out- of-order, push the emergency button (EMERGENCY) to operate by hand.
  • Page 27 Outdoor Unit AIR IN Connection Cover Remove cover to access the AC connection to the indoor unit. AIR OUT Service Valves The indoor and outdoor units are connected by copper tubes which are connected here.
  • Page 28 REMOTE CONTROLLER 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 29 REMOTE CONTROLLER DISPLAY MODE Indicators (Auto/Quick/Cool/Fan/Dehumidifier/Heat) 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. TIMER Indicators (Include sleep) Lights to indicate the timer function mode.
  • Page 30 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 31 Fan Speed (Indoor Unit) (1) Motor speed (Super high speed, high speed, normal speed, low speed, ultra 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) DEHUMI- FAN ONLY COOL...
  • Page 32 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 +0.5°C –0.5°C +0.5°C –0.5°C –0.5°C HOUR HOUR...
  • Page 33 Emergency Operation (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: Quick • Preset temperature:18°C: Cooling, 32°C: Heating) •...
  • Page 34 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 Fan Speed : low speed = < Room temperature 18°C Compressor : OFF Fan speed : Low speed Air Discharge Direction(only remocon operation) The air discharge direction procedure is below.
  • Page 35 Self-Diagnostic Function The control will contain diagnostic test to verify the integrity of the system. LED BLINK PATTERN CASE NOTE CODE1 Room Sensor open or Short • Continuously working to fix room temperature 18°C in heating mode. • Continuously working to fix room 0.2S temperature 32°C in cooling mode ON + Airclean LAMP...

  • Page 36: Wiring Diagram

    5. WIRING DIAGRAM...
  • Page 37 MAIN ELECTRIC PARTS DMB-1812LH PART NAME PART CODE SPEC. QUANTITY REMARK Fan Motor 3108003800 IC-8417DWKF5A Fan Motor Capacitor 3106900300 1.0ßfi 400VAC Indoor Fuse 5FVLB3152L 250V 3.15A Unit (9K) Stepping Motor 3108003900 GSP-24SW-061 Terminal Block 3108912300 SN-DBW-03P Fan Motor 3108001220 IC-8428DWKG7C...

  • Page 38: Refrigerant Cycle

    6. REFRIGERANT CYCLE Note) If the pipe length exceeds the standard length, add 30g of refrigerant per extra meter. Model Name DMB-1812LH(9K) DMB-1812LH (12K) DMB-1812LH (9K+12K) Contents IDØ1.6 x L750 IDØ1.6 x L350 IDØ1.6 x L750, IDØ1.6 x L350 Cool...

  • Page 39: Control Block Diagram

    7. CONTROL BLOCK DIAGRAM INDOOR PART Operating Mode Unit on lamp Remote Signal receiver Fan Speed Air clean lamp Emergency Timer Selection Quick lamp Operation Flap Position Timer lamp Temp. Setting ON/OFF Room air temp. SLEEP Indoor coil temp. REMOCON Circuit for signal receiver A/D converter lnitialization...
  • Page 40 OUT DOOR PART OD sensor RL 1 Comp in DOOR unit RL 2 A/D Converter RL 3 Communication RL 4 SV-E Relay Out put RL 5 SV-A Micro Driver Controller RL 6 SV-B RL 7 SV-C SV-D RL 8 DC POWER TRANS RL 9 SV-F...
  • Page 41 Trouble Is the Is the power Check power supply mains unit display applied to the or interconnection wires normal? unit Outdoor unit does Is the not run?(note. 1) power normal? check the voltage between Check the wiring of indoor Y & L of terminal block Does the compressor run...
  • Page 42 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 fan runs.
  • Page 43 Neither Indoor Unit nor Outdoor Unit Runs Confirm following statement. When the unit operates normally, Sometimes the outdoor unit and indoor unit cannot operate. Check the function is it timer mode? The function is in the sleep mode and is the setting time over? Is the setting mode DEHUMIDIFIER mode? When the unit is DEHUMIDIFIER mode while in the auto mode, the outdoor unit and indoor unit sometimes does not run.
  • Page 44 Outdoor Unit Runs but Indoor Fan Does 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 45 Outdoor Fan and Compressor Do Not Run Confirm following statement. When the unit operate normally, Sometimes the outdoor unit and indoor unit cannot operate. Is the setting temperature proper? Is the unit during 3min. Time delay of compressor. During frost prevention of lndoor unit. During dehumidifier mode.
  • Page 46 Only Compressor Does not Run - Check the following at cooling mode Check the control P .C.B Rating voltage Check the voltge 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 47 PCB DRIVING DESCRIPTION...
  • Page 48 PCB CIRCUIT DIAGRAM DMB-1812LH (Outdoor)
  • Page 50 DMB-1812LH(12K)
  • Page 52 DMB-1812LH (9K)
  • Page 54 OUTDOOR CONTROL PCB ASS`Y PART NAME SPEC CODE LOC. WAFER YW396-03AVD(RED) 3108802600 WAFER YW396-03AVD(BLACK) 3108802700 WAFER YW500-02V 3108803000 GP881206-2(250) 3108803500 CN4,5 WAFER YW396-03AVD 3108802500 CN6,7,8,9,10,15 WAFER SMW250-05 3108804900 CN11 WAFER SMW250-05(RED) 3108804910 CN12 WAFER SMW250-02 3108804200 CN13 WAFER SMW250-02(RED) 3108804210 CN14 DIODE 1N4004 TAPE...
  • Page 55 INDOOR CONTROL PCB ASS`Y PART NAME SPEC CODE LOC. WAFER YW396-03AVD(RED) 3108802600 WAFER YW396-05AVD 3108802900 WAFER YW396-03AVD 3108802500 WAFER SMW250-05 3108804900 WAFER SMW250-05(RED) 3108804910 WAFER SMW250-02 3108804200 WAFER SMW250-08 3108804000 WAFER SMW250-07 3108804100 WAFER SMW250-06 3108802000 WAFER 5267-04A 3108804500 CN11 WAFER YFAW254-02 3108804400...
  • Page 56 Power Supply(1) I.D.U Communication line Zero cross O.D.U DESCRIPTION DC Power Supply in circuit needs +12V and +5V. +12V is used for Triac Driving Photo Triac, Buzzer Driving Swing, Sweep Motor. And it is regulated +5V DC by Regulator IC7805. Oscillator(2) DESCRIPTION Oscillatory Frequency drive Micom, it is made up 8MHz resonator oscillatory Freqency.
  • Page 57 Sensor(3) Room temperature and Evaporator temperature Sensor Input I/D SENSOR MICOM 12.7KF ROOM SENSOR 12.7KF 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 R9 (12.7KΩ) and R10 (12.7KΩ).
  • Page 58 Triac Driving(4) AC 220V TLP561 130µH MICOM 0.1µF 120Ohm SM3JZ47 TRI C102M TO MOTOR 1/2W DESCRIPTION Number 13 Terminal of Micom is put out Pulse Output, by way of Buffer it is driving Photo Triac 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 59 Remote Controller(5) DESCRIPTION Signal from Remote Controller put in only Control Data Signal at Micom Terminal 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 Wave Custom Code is Reversed Face. 4.5ms 16bit 24bit...
  • Page 60 Micom Power Supply(7) VDD 42 10µF MICOM 8MHz DESCRIPTION MICOM Power is supplied 5V at Number 42 using VDD, Number 19, 20 Using Oscillator.
  • Page 61 Reset(8) MICOM 5.6K 7042P 10.3 4.7uF/50V 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 4.25V, and then send Reset Signal. Vcc (+5V) 4.25V DELAY TIME FOR POWER ON...
  • Page 62 I/D FAN RPM SETTING F5 104Z 6A 103J heat/low cool/low heat/high MICOM cool/high monitoring DESCRIPTION Indoor Fan Motor RPM is set by each registance. (R27, R28, R29, R30, R31) Buzzer Driving(10) DESCRIPTION MICOM Micom 35 Terminal put out Buzzer Driving Pulse, its output is driving Buzzer through Buffer.
  • Page 63 Zero Crossing Detect(11) KRC120M MICOM CC12 5.6K DESCRIPTION It defect Zero Cross part of Trans output voltage, Transistor TR1 is used to put in the Micom. Detail Driving is as following Fig 11-1. R19 is Resistance to limit current. AC18V Number 31 of Micom...
  • Page 64 Stepping Motor Driving(12) Ø 1 Ø 2 FOR SWING MICOM Ø 3 Ø 4 KID65004 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...
  • Page 65 Communication circuit (13) Micom C102M CC11 A1270 DESCRIPTION Each 2 ports 34, 32 are using communication between I.D.U and O.D.U.
  • Page 66 OUTDOOR CONTROL PCB ASS`Y Power Supply(1) AC 220V 275V 7812 104K 7805 FUSE1 VI VO VI VO 3.15A 100µF 470µF 2200µF POWER TRANS DESCRIPTION DC Power Supply in circuit needs +12V and +5V. +12V is used for Triac Driving Photo Triac, Buzzer Driving Swing, Sweep Motor.
  • Page 67 Sensor(3) Room temperature and Evaporator temperature Sensor Input MICOM O/D SENSOR 12.7kF CN13 DESCRIPTION Number 13 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 R14 (12.7KΩ) Relation between temperature and voltage is following Table 3-1.
  • Page 68 Selecting Mode(4) (SELECT S/W INPUT, OUTPUT) MICOM Install S/W CC10 DESCRIPTION POSITION MODE There are Mode according to SW position as following Table 6-1. OPEN Normal According as port of fixed Micom is Low, the unit is Install operating as following Table 6-1. Table 6-1...
  • Page 69 Micom Power Supply(5) VDD 28 VDD 42 10µF MICOM 8MHz DESCRIPTION MICOM Power is supplied 5V at Number 28 using VDD, Number 1, 2 Using Oscillator.
  • Page 70 Reset(6) MICOM 5.6K 7042P 4.7uF/50V DESCRIPTION Voltage less than about 0.8V put in Micom Terminal of Number 3 and then Micom reset. Reset IC detect Power ON and Voltage less than 4.25V, and then send Reset Signal. Vcc (+5V) 4.25V DELAY TIME FOR POWER ON RESET...
  • Page 71 Communication circuit (7) A1270 CN11 A1270 R6 1K CN12 C102 DESCRIPTION Each port 7, 8, 9, 10 is using communcation between I.D.U and O.D.U. Relay Control Circuit (8) RL 1 65004 RL 2 RL 3 RL 9 RL 4 RL 5 65004 RL 6 RL 7...
  • Page 72 REMOTE CONTROLLER ASSMBLY FUNCTIONAL TEST METHOD TEST START Power supply again Power Supply Is Display at the beginning ON? Select ON/OFF button Check the Following BATTERY SPRING MICOM Is Display at the beginning ON? Select Mode button Is it normal? ERROR Select FAN SPEED button Is it normal?
  • Page 73 ERROR Is LCD display OFF? Select TIMER ON Button ERROR Is it normal Select Timer Enter Button ERROR display? TIMER Select CANCEL Button Is all display OFF? ERROR Select ON/OFF Button Select OFF (Timer) Button (0.5~24 HOUR) ERROR Is it normal? Select SLEEP Button SLEEP MODE ERROR...

  • Page 74: Key Components Of Electronic Circuit

    9. KEY COMPONENTS OF ELECTRONIC CIRCUIT (1) IC1 (MICOM) INDOOR PCB P77(HSO) P76(HSCK) (XTOUT)P22 Steppping Motor Driving P75(SO) (XTIN)P21 P74(SI) (INT5/STOP)P20 P73(SCK) P72(PDO/PWM) P71(INT4) (TC2)P15 P70(INT3/TC3) (PPG)P14 Buzzer Driving (DVO)P13 Communication out (INT2/TC1)P12 Remocon Input LED Driving (INT1)P11 Communication input (INTO)P10 Zero crossing detect Indoor unit...
  • Page 75 (2) IC1 (MICOM) OUTDOOR PCB XOUT Oscillation HOLD(KEO) RESET R92(SCK) Reset circuit R91(SO) Relay control output R71(PULSE) R90(SI) R72/VAREF R83(T1) R40(AINO) R82(INT1) R41(AIN1) R81(T2) Communication circuit R42(AIN2) R80(INT2) R43(AIN3) R50(AIN4) Relay control output Install S/W R51(AIN5) R52(AIN6) Temperature sensor input R53(AIN7)
  • Page 76 (3) U2, 4 (KID65004) DARLINGTON ARRAYS IN1 1 16 OUT 1 KID65004AP IN2 2 15 OUT 2 COMMON IN 3 3 14 OUT 3 INPUT OUTPUT IN 4 4 13 OUT 4 10.5KΩ IN5 5 12 OUT 5 7.2KΩ IN6 6 11 OUT 6 IN7 7 10 OUT 7...
  • Page 77 (6) U9 (KIA7042P) : RESET IC KIA70 INPUT OUTLINE GROUND OUTPUT...

  • Page 78: Disassembly Instructions

    10. DISASSEMBLY INSTRUCTIONS INDOOR UNIT DMB-1812LH (9K) PROCEDURES PHOTOS 1. Stop the Air conditioner and disconnect the power cord from the wall outlet. Fig 1 2. Removing the Insert Grille and Frame Grille. (Fig 1~2) 1 Draw up the Insert Grille and remove it.
  • Page 79 DMB-1812LH (12K) PROCEDURES PHOTOS 1. Stop the Air conditioner and disconnect the power cord from the wall outlet. Fig 1 2. Removing the Insert Grille and Frame Grille. (Fig 1~2) 1 Draw up the Insert Grille and remove it. 2 Loosen two special screws fixed at the Cover Ter-Block.

  • Page 80: Outdoor Unit

    OUTDOOR UNIT PROCEDURES PHOTOS 1.Stop the air conditioner and dis connect the wire from in door unit to out door unit. 2. Disassemble the case. (Fig 1~2) Fig 1 1 Remove the Top Panel. (Loosen nine screws) 2 Remove the Front Cabinet. (Loosen seven screws) 3 Remove the Side Cabinet and Back Cabinet.

  • Page 81: Exploded Diagram (Indoor Unit)

    EXPLODED DIAGRAM (Indoor Unit) DMB-1812LH(9K)
  • Page 82 DMB-1812LH (9K)  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 83 DMB-1812LH (12K)
  • Page 84 DMB-1812LH (12K)  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 85 PART CODE PART NAME Q'TY SPEC REMARK 15-8 3102797910 HARNESS I.D EARTH 15-9 3103400300 KNOB RESET SWITCH 15-10 3100024000 MODE SELECT ASS'Y TS-11 & HARNESS 15-11 3101395060 POWER CORD ASS'Y BUYER 15-12 7111301611 TAPPING SCREW T1S PAN 3 X 16 MFZN 3102200401 FRAME BUYER...

  • Page 86: Exploded Diagram (Outdoor Unit)

    EXPLODED DIAGRAM (Outdoor Unit) DMB-1812LH...
  • Page 87 DMB-1812LH  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 88: Control Box Assembly

    CONTROL BOX ASSEMBLY DMB-1812LH (9K)
  • Page 89 DMB-1812LH (9K)  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 90 DMB-1812LH (12K)
  • Page 91 DMB-1812LH (12K)  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 92 DMB-1812LH(Outdoor)
  • Page 93 DMB-1812LH (Outdoor)  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 94 DEAWOO ELECTRONICS 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. : 3113902200 PRINTED DATE: APR. 2001...
  • Page 95 : 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). DAEWOO ELECTRONICS CO., LTD.

Table of Contents