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Daewoo DWB-180RH-R, Service Manual

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Daewoo DWB-180RH-R Service Manual Download Page 32

31

4. Display drive and Key Input Circuit

Display operation is dynamic scan drive type. It has 1/3 duty cycle.
Scan signal output : Port 21, Port 22, Port 23
TR1~TR6 : Scan signal drive circuit
R1~R7 : LED current limit resistance .(for 6 high current output port 12,13,15,16,17,18)
Port 19, Port 24 of IC4 : Key signal input by scan.

Oscillatory frequency is 8MHz. It is made up resonator oscillatory frequency.
Oscillatory wave is sine wave shape.

The remote control signal input is detacted at port 5 of IC4.

CE6 and CC8 : Noise protection parts

Summary of Contents for DWB-180RH-R

Page 1: ...Service Manual Window Type Room Air Conditioner Model DWB 180RH R DWB 186RH R DWB 240RH R DWB 246RH R DAEWOO ELECTRONICS CORP ...

Page 2: ... 3 3 Wiring Diagram 18 4 Refrigerant Cycle 19 5 Control Block Diagram 20 6 Circuit Diagram 21 7 Trouble Shooting Guide 24 8 Key Components of Electronic Circuit 33 9 Disassembly Instructions 35 10 Exploded Diagram and Parts List 37 Contents ...

Page 3: ...Type Recipro Compressor Model H2EB243ABKC H2EB283ABKC Capacitor 35µF 400VAC 40µF 370VAC Overload Protector Internal Type Model AM12DWD08 D M I A2945CA011 D M I Fan Motor Capacitor 7 5µF 400VAC 7 5µF 400VAC Indoor Fan Blower Fan Outdoor Fan Propeller Fan Control Capillary Refrigerant R 22 Capillary Tube ID ø1 4 x L800 x 2 ID ø 1 6 x L1000 x 2 Amount g 1 230 1 080 Dimensions WxHxD Unit mm 660 x 430 ...

Page 4: ...NAME AND FUNCTION DWB 180RH R DWB 240RH R 2 OPERATION NO PART NAME 1 AIR FILTER 2 GRILL FRONT 3 CABINET 4 BLADE VERTICAL NO PART NAME 5 PANEL CONTROL 6 REMOTE CONTROLLER 7 BLADE HORIZENTAL 8 AIR VENT 6 3 1 2 7 4 8 5 ...

Page 5: ...DWB 186RH R DWB 246RH R 6 5 3 4 8 2 7 1 9 NO PART NAME 1 AIR FILTER 2 INLET GRILLE 3 CABINET 4 BLADE VERTICAL 5 PANEL CONTROL NO PART NAME 6 REMOTE CONTROLLER 7 BLADE HORIZENTAL 8 AIR VENT 9 GRILLE FRONT ...

Page 6: ...ou push this button it is selected as follow COOLING HEATING FAN COOLING AUTO SWING Everytime you push this button the auto swing mode is toggled TEMPERATURE It is the button to set the room in the desired room temp The temp can be set within a range from 16 C 60 F to 32 C 90 F by 1 C 1 F POWER ON OFF To turn the unit ON push this button To turn the unit OFF push this button again FAN SPEED Everyt...

Page 7: ...C 90 F by 1 C 1 F POWER ON OFF SWITCH To turn the unit ON push this button To turn the unit OFF push this button again MODE SELECT Everytime you push this button It is selected as follow COOLING HEATING FAN COOLING FAN SPEED Everytime you push this button It is selected as follow Low High Low AUTO SWING Everytime you push this button the auto swing mode is toggled When the fan stops in heating mod...

Page 8: ...ton to set the desired room temperature The temperature can be set within a range from 16 C 60 F to 32 C 90 F by 1 C 1 F POWER ON OFF SWITCH To turn the unit ON push this button To turn the unit OFF push this button again MODE SELECT Everytime you push this button It is selected as follow COOLING HEATING FAN COOLING FAN SPEED Everytime you push this button It is selected as follow Low High Low AUT...

Page 9: ...the and directions are correct Be sure that both batteries are new Re attach the cover Slide it back into position Do not use rechargeable batteries such batteries differ from standard dry cells in shape dimensions and performance Remove the batteries from the remote controller if the air conditioner is not going to be used for an extended length of time 1 2 3 ...

Page 10: ...compressor and fan work 3 In this mode you can change fan speed and desired temperature at any time 4 SLEEP mode and ON OFF TIMER can be selected By remocon button only There are 10 seconds time delay of the Fan Motor when compressor is starts or stops 1 The desired room temperature is changed within a range from 16 C 60 F to 32 C 90 F by 1 C 1 FAN SPEED is changed as follows by pushing FAN SPEED ...

Page 11: ...1 Timer is set to as follows by pushing TIMER CANCEL button 1hr 2hr 3hr 4hr 5hr 6hr 8hr 10hr 12hr 16hr 20hr 24hr cancel 2 Unit is off after timer is over 3 If you want to cancel timer push this button again at any time DISPLAY 1 Current room temperature is displayed 2 FAN lamp lights There is no change in display 1 TIMER lamp lights 2 Setting time is displayed 3 After a few seconds display is chan...

Page 12: ...The desired temp is decreased 3 C 5 4 F for 4 hours in heating mode Auto swing is selected Fan speed is set to LOW L2 Mode The unit work as follow Auto swing is selected Fan speed is set to LOW 2 This mode can be selected in COOLING and HEATING mode only The unit runs 50 minutes The unit will start defrost function when the temperature of the heat exchanger of the outside arrived at the programed ...

Page 13: ... and fan work 3 In this mode you can change fan speed and desired temperature at any time 4 SLEEP mode and ON OFF TIMER can be selected By remocon button only There are 10 seconds time delay of the Fan Motor when compressor is starts or stops 1 The desired room temperature is changed within a range from 16 C 60 F to 32 C 90 F by 1 C 1 FAN SPEED is changed as follows by pushing FAN SPEED button LOW...

Page 14: ...1 Timer is set to as follows by pushing TIMER CANCEL button 1hr 2hr 3hr 4hr 5hr 6hr 8hr 10hr 12hr 16hr 20hr 24hr cancel 2 Unit is off after timer is over 3 If you want to cancel timer push this button again at any time DISPLAY 1 Current room temperature is displayed 2 FAN lamp lights There is no change in display 1 TIMER lamp lights 2 Setting time is displayed 3 After a few seconds display is chan...

Page 15: ...de The desired temp is decreased 3 C 5 4 F for 4 hours in heating mode Auto swing is selected Fan speed is set to LOW L2 Mode The unit work as follow Auto swing is selected Fan speed is set to LOW 2 This mode can be selected in COOLING and HEATING mode only The unit runs 50 minutes The unit will start defrost function when the temperature of the heat exchanger of the outside arrived at the program...

Page 16: ...erature of compressor If the Unit Display receive the signal of Remote Controller you can hear the signal beep or beep beep OFF Timer 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 Desired temperature COMP OFF 1 C 1 C Room Temperature Desired temperature COMP ON HEATING COMP OFF 3 C Room Temperature 5 DESCRIPT...

Page 17: ...EP indicator will disappear in the display Sleep Mode 0 0 5 1 0 HOUR SET TIME Desired Difference desired temperature between room temperature C 0 5 C 0 5 C 0 5 C Temperature Fan Speed 1 Motor speed high speed low speed 2 Remote controller setting fan speed H L 3 Relation of operating mode between fan speed FAN ONLY COOL HEAT H H H H L L L L 1 0 0 5 1 0 HOUR SET TIME Desired Difference desired temp...

Page 18: ...ndensor After 50 minutes since the units starts on heating mode 2 If the Temperature is below 4 C the De ice function will start 3 Now the unit turned to cooling operation but fan motor is off Back to heat mode 1 On the de ice operation if the temperature is going over 15 C 2 Or 15minutes passed on the de ice operation 3 Now the unit turned to heating mode Remark This de ice operation is always re...

Page 19: ...18 3 WIRING DIAGRAM ...

Page 20: ...19 4 REFRIGERANT CYCLE Evaporator Blower fan MOTOR Reversing Valve Accumulator Propeller fan Condenser Refrigerant flow COOLING Refrigerant flow HEATING Capillary Tube M Compressor ...

Page 21: ...20 5 CONTROL BLOCK DIAGRAM ...

Page 22: ...21 6 CIRCUIT DIAGRAM ...

Page 23: ... IC2 34 IC DRIVER ULN2004AP M 13GT62004A 1 IC3 35 IC MICOM TMP87C809BN 4K75 13GS4K75 1 IC4 36 IC RESET KIA7042P 5L 1KA7042P 1 IC5 37 CHOKE COIL 1MH 0 5A 52C102K000 1 L1 38 RESONATOR CRTL8 00MSOT 5PCRTL8MS0 1 OSC1 39 IC PHOTOCOUPLER TLP421 1TLP421 1 PC1 40 PCB MAIN 80X130X1 6T FR1 3114306210 1 PCB 41 R CARBON FILM 1 4 1K OHM J RD 4K102J 1 R1 42 JUMPER 10MM 3109400100 1 R11 43 R CARBON FILM 1 4 10K ...

Page 24: ...09300900 SWITCH TACT JTP1212 1 SW6 28 TKRC102M TR KRC 102 M TAPPING 1 TR1 29 TZTC3198Y TRANSISTOR KTC3198Y 1815Y AUTO 1 TR2 30 TKRC102M TR KRC 102 M TAPPING 1 TR3 31 TZTC3198Y TRANSISTOR KTC3198Y 1815Y AUTO 1 TR4 32 TKRC102M TR KRC 102 M TAPPING 1 TR5 33 TZTC3198Y TRANSISTOR KTC3198Y 1815Y AUTO 1 TR6 34 TKRC102M TR KRC 102 M TAPPING 1 TR7 Front PCB ASS Y 3114306100 NO PART NAME SPEC PART CODE Q TY...

Page 25: ... Disconnection 2 Malfunction of contact Disconnection or burned out 1 Failure 2 Malfunction 3 Mode is not set to the proper setting 1 Turn over Lack of capacity Disconnection 1 The voltage exceeded allowed range 2 Capacity of wire is not sufficient Extremely high or Low Burned out Malfunction Lack of capacity Malfunction Lack of capacity Turn over Consult your electric company In case of a breaker...

Page 26: ...or failure 3 Leakage of refrigerant gas 4 Refrigerant charge is too high Clogged up with dust 1 Fin is cogged up with dust 2 The ventilation is not good 3 The unit is exposed to the sunlight 4 Other heat source is added in the room Installation of the unit is imperfectly done 1 Fan is contacted with obstacles 2 Fixing bolt Have a screw loose Electrical noise The front is lower than rear side 1 Ins...

Page 27: ...plied to the unit Check the voltage between CN and RL1 of Main P C B N 1 Check the Breaker or Fuse Self Diagnostic function is ON Check according to self Diagnostic function Main P C B defect Check the unit display is all off Press the ON OFF button of Remote Control or Front Panel Is the unit display all off Pull out the power plug and then insert the power plug after 5 second Main P C B is norma...

Page 28: ...he compressor Check the winding resistance Check the compressor capacitor Check the connecting wire between Main P C B and the compressor Change Relay RL1 Change the compressor Check the Main 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 Do not Run ...

Page 29: ...PCBDRIVINGDESCRIPTION ...

Page 30: ... Power source circuit Diode D4 D7 Rectifier Diodes Condenser CE1 and CE2 Smoothing circuit components DC 12V Power output is made by switching performance of Device IC2 and TRS1 DC 12V Power is used for Relay and Buzzer driving DC 5V is regulated by IC1 It is used for LED display Sensor Key and Micom driving Regulation of DC12V is performed by PC1 and its voltage feedback signal And the others are...

Page 31: ...nput voltage is as following Port 10 of IC1 is a type of temperature display option port It is determined by ratio between R11 and R12 Relation between R1 and Display temperature type is as following Temperature C 5 0 5 10 15 20 25 30 35 Sensor resistance KΩ 43 67 33 40 25 79 20 10 15 80 12 52 10 00 8 05 6 52 Input Voltage V 0 932 1 152 1 397 1 661 1 938 2 220 2 500 2 770 3 027 R11 KΩ SHORT 2 32 I...

Page 32: ...an signal drive circuit R1 R7 LED current limit resistance for 6 high current output port 12 13 15 16 17 18 Port 19 Port 24 of IC4 Key signal input by scan Oscillatory frequency is 8MHz It is made up resonator oscillatory frequency Oscillatory wave is sine wave shape The remote control signal input is detacted at port 5 of IC4 CE6 and CC8 Noise protection parts ...

Page 33: ...lay ON and OFF drive signal output IC3 Relay ON and OFF drive device Fan Motor ON OFF and Speed control RL2 RL3 RL4 Compressor ON OFF control RL1 Swing Motor ON OFF control RL5 Buzzer is operated by Port 26 of IC4 Operative frequency is 2 KHz 1 2 duty pulse ...

Page 34: ...33 1 IC4 TMP87C809N MICOM 2 IC2 TNY264 SMPS SWITCH IC 8 KEY COMPONENTS OF ELECTRIC CIRCUIT ...

Page 35: ... 7 10 OUT 7 GND 8 9 COMMON FREE WHEELING DIODES COM 10 5K 7 2K 3K Top View Equivalent Circuit 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 221A Case is ground for Case 1 Pin 1 INPUT 2 GROUND 3 OUTPUT TSUFFIX PLAASTIC PACKAGE CASE 221A TO 220TYPE KID65004AP ...

Page 36: ...anel Housing 7 Remove screws 4 point from Ass y Fan Motor s sides Ass y Fan Motor is assembly of Fan Motor Propeller and Blower Fan Orifice and Panel Housing 8 Lift the Ass y Fan Motor from the unit 9 Remove Clip Fan 2 point from the shaft of Fan Motor 10 Remove Propeller Fan from the shaft of Fan Motor 11 Remove Blower Fan from the shaft of Fan Motor 12 Remove Fan Motor from Panel Housing Remove ...

Page 37: ...bottom of the grille lift it Remove screw which fasten Frame Grille with driver Disassemble Frame Grille from chassis 2 Remove the unit from Cabinet Remove screws 2 point from the unit s sides Pull the unit from cabinet 3 Remove Holder Scroll 4 Remove Scroll upper 5 Remove Ass y Control Box Remove screws 4 point Remove wires in the each components 6 Remove wires in the Panel Housing 7 Remove screw...

Page 38: ...SSOR 1 H2EB283ABKC 220 240V 50HZ DWB 240RH R 15 7400208412 WASHER PLAIN 3 ID 8 4 OD 26 T1 6 16 7392801211 NUT LOCK 3 M8 1 25P 17 GROMMET 3 EPDM COMP ACCESSORY PART 18 GASKET 1 SILICON COMP ACCESSORY PART 19 COVER TERMINAL 1 COMP ACCESSORY PART 20 3112709710 HARNESS COMP2 1 14 AWG 3 DWB 180C R 21 3107000500 FAN CLIP 2 SK 5 22 3101802800 FAN BLOWER 1 ABS ABS 730 23 3104202301 PANEL HOUSING 1 SGCC T1...

Page 39: ...S OD SENSOR 1 TSD310DAACX15 53 3100075800 ASS Y CABINET DRAIN 1 DWB 180CH R 56 3966031000 SWING MOTOR 1 200 220V 50 60 HZ DS 090R 57 7112300611 SCREW TAPPING 2 T1 TRS M3 6 58 3109504500 CAPACITOR 1 7 5 35µF 400VAC D63 SH DWB 180RH R 3116904400 CAPACITOR 1 7 5 40µF 400VAC DWB 240RH R 59 3101201500 CLAMP CAPACITOR 1 SGCC M Z22 LG 60 7122401011 SCREW TAPTITE 1 T1 TRS 4 10 61 3101300430 POWER CORD 1 S...

Page 40: ...6 7392801211 NUT LOCK 3 M8 1 25P 17 GROMMET 3 EPDM COMP ACCESSORY PART 18 GASKET 1 SILICON COMP ACCESSORY PART 19 COVER TERMINAL 1 COMP ACCESSORY PART 20 3112709710 HARNESS COMP2 1 14 AWG 3 DWB 180C R 21 3107000500 FAN CLIP 2 SK 5 22 3101802800 FAN BLOWER 1 ABS ABS 730 23 3104202301 PANEL HOUSING 1 SGCC T1 0 DWB 180C 25 3101406502 COVER SCROLL 1 SGCC T0 6 26 3101406601 COVER SIDE 1 SGCC T0 6 27 31...

Page 41: ...0 ASS Y CABINET DRAIN 1 DWB 180CH R 56 3966031000 SWING MOTOR 1 200 220V 50 60 HZ DS 090R 57 7112300611 SCREW TAPPING 2 T1 TRS M3 6 58 3109504500 CAPACITOR 1 7 5 35µF 400VAC D63 SH DWB 186RH R 3116904400 CAPACITOR 1 7 5 40µF 400VAC DWB 246RH R 59 3101201500 CLAMP CAPACITOR 1 SGCC M Z22 LG 60 7122401011 SCREW TAPTITE 1 T1 TRS 4 10 61 3101300430 POWER CORD 1 SJT AWG 14 3 ARABIA 62 3101201900 CLAMP P...

Page 42: ...41 DWB 180RH R DWB 240RH R ...

Page 43: ...42 DWB 186RH R DWB 246RH R ...

Page 44: ...RHR02 DAEWOO ELECTRONICS CORP 686 AHYEON DONG MAPO GU SEOUL KOREA C P O BOX 8003 SEOUL KOREA TELEX DWELEC K28177 8 CABLE DAEWOOELEC FAX 02 590 6291 TEL 02 360 7114 590 6151 5 http www dwe co kr PRINTED DATE JAN 2004 ...

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