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S/M No. : R1A1G0A004
Service Manual
Split System
Air Conditioner
Model: DSB-092LHG
DSB-242LHG
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
S/M No. : SB092LH001
MAR. 2006
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Table of Contents
Related Manuals for Daewoo DSB-092LHG
Summary of Contents for Daewoo DSB-092LHG
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Page 1: Service Manual
S/M No. : R1A1G0A004 S/M No. : SB092LH001 Service Manual Split System Air Conditioner Model: DSB-092LHG DSB-242LHG Caution : In this Manual, some parts can be changed for improving, their performance without notice in the parts list. So, if you... -
Page 2: Table Of Contents
CONTENTS Contents Service and Maintenance Performance Parameters Controls Specification Operation of air Conditioner Installation Explanations Disassembly and reassembly Troubleshooting Exploded Views and Parts List Wiring Diagram... -
Page 3: Service And Maintenance
SERVICE AND MAINTENANCE Air Conditioner no use for a long time. Want to use the Air Conditioner Start fan only for 3-4 hours to comple- Clean filters and replace them to origi- tely dry the inside of the indoor unit. nal position.Clean indoor unit with soft Set COOL mode or HEAT mode, clothe. - Page 4 SERVICE AND MAINTENANCE Deodorization filter, Air cleaner, Filters must be cleaned termly. Open front panel only after air conditioner stops completely. Filters should be cleaned once every two weeks. Clean deodorization filters and air cleaner. Take out filters. Take out filters first, then take out deodorization filter and air cleaner.
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Page 5: Performance Parameters
PERFORMANCE PARAMETERS DSB-092LHG Model indoor outdoor heat pump type Function 220-240V , 50Hz Power 2500/2800 Rated cooling/heating capacity (W) 900(cool)/850(heat) Standard input power(W) 4.2(cool)/3.9(heat) Standard input current(A) Air flow volume(m /h) Air flow volume(m /h) Dehumidifying capacity (L/h) difying capacity (L/h) - Page 6 PERFORMANCE PARAMETERS DSB-242LHG Model indoor outdoor heat pump type Function 220-240V , 50Hz Power Rated cooling/heating capacity (W) 6800/7500 Standard input power(W) 2500(cool)/2590(heat) Standard input current(A) 12.1(cool)/12.6(heat) Air flow volume(m /h) 1100 Dehumidifying capacity (L/h) Protection class IP20(Indoor) IP24(Outdoor) Water-proof Climate type Refrigerant (R22) charge amount(g) 2350...
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Page 7: Controls Specification
CONTROLS SPECIFICATION ABBREVIA TION Ts: Setting Temperature Tr: Room T emperature Ti: Indoor defrost sensor temperature To: Outdoor defrost sensor temperature OPERA TION OF MAIN BOARD COOL MODE If T r > Ts, cool operation is activated. Compressor and outdoor fan are turned on. Indoor fan runs at the set speed. - Page 8 CONTROLS SPECIFICATION DRY MODE If Tr 15 , dry operation is activated. Compressor and outdoor fan are turned on interval. If Tr 23 ,. Compressor and outdoor fan are operating in sequence as follows: See A of fig1 If Tr<23 Compressor and outdoor fan are operating in sequence as follows: see B of FIG1.
- Page 9 CONTROLS SPECIFICATION HIGH PRESSURE PROTECTION If Ti > 50 , the outdoor fan is turned off. After that, if Ti < 47 , the system will start again. If Ti > 63 , the compressor is turned off. After that, if Ti < 50 , the system will start again.
- Page 10 CONTROLS SPECIFICATION AUTO FAN SPEED In cool mode, if Tr-Ts < 0 , indoor fan is run at low speed. If 0 <Tr-Ts<2 , if indoor fan is running at low speed, there will be no change in speed , if fan is running at medium speed ,there will be no change in speed ,if indoor fan is run at high speed ,it will change to medium speed.
- Page 11 CONTROLS SPECIFICATION OPERATION OF CONTROL PANEL ON INDOOR UNIT MANUAL OPERATION BUTTON Every press of this button will turn the system on or off. (Cool only type) Every time the switch is pressed, it changes in sequence of COOL STOP. (Heat pump type) Every time the switch is pressed, it changes in sequence of COOL...
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Page 12: Operation Of Air Conditioner
OPERATION OF AIR CONDITIONER Operation procedure-Control under the Remote controller Run/Stop Press I/O button, start operation, and stop when repressed. Temperature adjustment Press TEMPERATURE ADJUSTMENT button, decreases 1 by press button once, and increase 1 C by press button once. Temperature change will display in the remote controller’s display. - Page 13 OPERATION OF AIR CONDITIONER Press AUTO SWING button, the deflector start to opreate. Change right/left air flow direction Left/Right deflector Manually swing ,to change right/left air flow direction.Complete ad- justment before operation, if adjusted during operation,the auto swinging deflector may pinch your fingers.(Fig.
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Page 14: Auto Mode
OPERATION OF AIR CONDITIONER Operation mode adjustment AUTO mode When started, operation mode will turn into COOL or DRY or HEAT mode as per room temperature, if operation stops for two hours, it restarts in the same mode set as before operation was stopped. -
Page 15: Timer Operation
OPERATION OF AIR CONDITIONER COOL mode: How to make COOL more efficient ? Close windows,put down the window curtains,and reduce sunlight to increase the cooling effect.Attach sunlight shield film on windows to reduce sunlight entering the room.Put outdoor unit at a place where it will be shield from direct sunlight to save energy. DRY mode: 70% humidity is the limit for people to feel comfortable. -
Page 16: Installation Explanations
INSTALLATION SKETCH DSB-092LHG Quantity Quantity Indoor unit accessories Indoor unit accessories Mounting plate Mounting plate Tapping screw ST4 25 Tapping screw ST4 25 Expansion rubber plug Expansion rubber plug Expansion bolt Expansion bolt Battery Battery Remote controller Remote controller Felt... - Page 17 INSTALLATION SKETCH DSB-242LHG 2 3 4 Quantity Indoor unit accessories Mounting plate Tapping screw ST4 25 Expansion rubber plug Expansion bolt Battery Remote controller Felt Adiabatic underlay connecting cable Drain joint remark (supplied by customer) Installation accessories Quantity Connecting pipe Big cannula Small cannula Drain hose...
- Page 18 The mounting plate should be attached to the structural part of wall (post etc.). fasten string at the central hole plumb mounting plate tappping screw ST4 25(5) DSB-092LHG fasten string at the central hole at least 60mm 510mm 510mm at least 120mm...
- Page 19 Replace the fastener and electrical box cover. Electrical box cover Screw Indoor unit terminal Fastener Pull the connecting cable's wire in completely Connecting cable DSB-092LHG Electrical box cover Diagram Indoor unit terminal Screw Screw Indoor unit terminal Connecting cable Fastener...
- Page 20 INSTALLATION(DSB-092LHG) OUTDOOR UNIT DSB-092LHG Outdoor unit terminal Connecting Indoor unit terminal Connecting joint cable Connecting Yellow/Green White cable White Blue Yellow Yellow/Green Blue 4 R1R2 Outdoor unit terminal Cool only type Heat pump type The connecting cables must be clipped together.
- Page 21 INSTALLATION(DSB-242LHG) Discharge the air procedure Connect assembly pipe to the appropriate valve on the indoor unit and outdoor unit and tighten the flare nut(as fig.1). Screw down the nut of connecting pipr with wrench(the torque as follow diagram ) NOTICE (Fig.1) 1.The number of bent position of the pipe in the indoor unit should not exceed 10.
- Page 22 INSTALLATION(DSB-242LHG) OUTDOOR UNIT Wiring The cable wire can be led from the back hole Outdoor unit of the piping hole or ejecting hole. Please utilize outdoor pipe support when 1 Remove the self-tapping screws (2 pcs) the cable wire is led from the backside. onthe maintenance board and take out the maintenance board.
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Page 23: Installation Of Refrigerant Pipe
INSTALLATION(DSB-242LHG) Installation of refrigerant pipe The refrigerant pipe shall be installed under 1 Direction of distribution pipes led out the cover of distribution pipe so that it is ( can be led out from four directions) convenient for installation and removal. Maintenance board Rear pipe... -
Page 24: Disassembly And Reassembly
DISASSEMBLY AND REASSEMBLY Stop operation of the conditoner and remove the power cord before repairing the unit Indoor unit Model : DSB-092LHG Parts Procedure Remark 1.Stop the air conditioner Front Grille operation and block the main power. 2.Contract the second finger... - Page 25 DISASSEMBLY AND REASSEMBLY Parts Procedure Remark 2.Loosen the screw of the inside terminal board , separate the board. 3.Loosen the screw of the inside terminal board , separate the board. 4.Take all the connector of the PCB upper side out. 5.Loosen the earth screw in evaporator.
- Page 26 DISASSEMBLY AND REASSEMBLY Parts Procedure Remark Ass’y tray 1.Push the left and right hooks drain to make the assíy pulled out. 2.Separete the assíy tray drain from the body. 1.Push the left hook and separate the left part out of evaporator.
- Page 27 DISASSEMBLY AND REASSEMBLY Outdoor unit Model : DSB-092LHG Parts Procedure Remark Cabinet 1.Turn off the unit and remove the power cable. 2.Remove the upper cabinet, the front cabinet and back cabinet. Fan motor & 1.Remove the nut flange. (Turn to the right to remove...
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Page 28: Indoor Unit
DISASSEMBLY AND REASSEMBLY Stop operation of the conditoner and remove the power cord before repairing the unit Indoor unit Model : DSB-242LHG Parts Procedure Remark Front Grille 1.Stop the air conditioner operation and block the main power. 2.Contract the second finger to the left , and right handle and pull to open the inlet grille. - Page 29 DISASSEMBLY AND REASSEMBLY Parts Procedure Remark 7.Pull front of the front panel, then take front panel out. Earth 1.Loosen the earth screw in Electrical Parts screw electric box, separate the grounding wire on the evaporator. 2.Take all the connector of the PCB upper side out.
- Page 30 DISASSEMBLY AND REASSEMBLY Parts Procedure Remark 1.Loosen the screw of the Assíy tray assíy tray drain. drain Evaporator 1.Loosen the left screw of the evaporator 2.Loosen the right screw of the evaporator 3.Separate the evaporate from indoor unit. 1.Loosen the fixing screw of Fan motor fan motor,then separate and cross fan...
- Page 31 DISASSEMBLY AND REASSEMBLY Outdoor unit Model : DSB-242LHG Parts Procedure Remark Cabinet 1.Turn off the unit and remove the power cable. 2.Remove the upper cabinet . Fan motor & 1.Remove the nut flange. propeller fan (Turn to the right to remove as it a left turned screw ) 2.Separate the propeller fan from fan motor.
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Page 32: Troubleshooting
Troubleshooting If problems can not be corrected after doing below items, please stop the air conditioner, contact our air conditioner specially eng- aged service centre nearest to you to get help. Fault analysis Is there a fault ? Does power fail ? Air conditioner does Is plug out ? not operate at all. - Page 33 Troubleshooting Fault analysis Is there a fault ? Indoor unit fan stops It is defrosting of the outdoor unit coil.It should for about 10 complete this process in about 10 minutes at minutes during most.( It freezes when outdoor temperature is heating.
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Page 34: Exploded Views And Parts List
Exploded Views and Parts List Model: DSB-092LHG Indoor unit 34-1 34-2 34-3 34-4 34-5 34-6... - Page 35 Exploded Views and Parts List Model: DSB-092LHG Indoor unit Quantity Name Number Quantity Number Name Room temperature sensor Dustproof filter Pipe temperature sensor Front panel Operation indication board Indicator light cover Remote signal receptor Signal receptor cover Encloser Electrical control board...
- Page 36 Exploded Views and Parts List Model: DSB-092LHG Outdoor unit...
- Page 37 Exploded Views and Parts List Model: DSB-092LHG Outdoor unit Name Quantity Number Quantity Number Name Compressor Air outlet grille Airtight cushion Front plated Compressor terminal cover Trademark Axial flow fan Wire assembly in the outdoor unit 31-1 Compressor wire Axial flow fan motor...
- Page 38 Exploded Views and Parts List Model: DSB-242LHG Indoor unit...
- Page 39 Exploded Views and Parts List Indoor unit Model : DSB-242LHG Name Quantity Number Quantity Number Name Front panel Encloser Indicate light cover Indicate light board Left cover of evaporator Screw cover Evaporator Left cover of evaporator Transformer Motor install board Indoor fan capacitor Clip Electrical control PCB...
- Page 40 Exploded Views and Parts List Outdoor unit Model: DSB-242LHG...
- Page 41 Exploded Views and Parts List Outdoor unit Model : DSB-242LHG Quantity Name Number Quantity Number Name air outlet grill Contactor Left front plate Terminal block 1 Handle Terminal block 2 Left back plate Condensator Motor fixed plate Fan motor holder Condensator fixed clip Electrical control box Partition...
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Page 42: Remote Controller
Exploded Views and Parts List Remote controller Name Quantity Number Inlay LCD case up LCD screen Conduct rubber Assíy PCB remocon Back body Spring battery Conduct rubber Spring battery Screw Back cover... -
Page 43: Wiring Diagram
Wiring diagram Model: DSB-092LHG INDOOR UNIT WIRING DIAGRAM FAN MOTOR MASTER POWER REMOTE SWITCH SOURCE LOUVER CONTROLLER MOTOR YLW/GRN CN-STM CN-C CN-FM CNW1 CN-RCV YLW/GRN COMPRESSOR RELAY RECEIVER TO OUTDOOR UNIT ELECTRONIC CONTROL CNW2 P.C BOARD CN-DISP CNF4 CNF5 CNF3... -
Page 44: Outdoor Unit Wiring Diagram
Wiring diagram Model: DSB-242LHG INDOOR UNIT WIRING DIAGRAM FAN MOTOR POWER SOURCE LOUVER REMOTE MOTOR YLW/GRN CONTROLLER YLW/GRN AC L IN CN-STM CN-C CN-FM AC N IN CN-DISP CN-DISP1 ELECTRINIC CONTROL OUTDOOR P.C BOARD DISPLAY COM OUT UNIT RECEIVER WFAN OUT BOARD YLW/GRN TRANS... - Page 45 DAEWOO ELECTRONICS CORP. 686, AHYEON-DONG MAPO-GU SEOUL, KOREA C.P.O. BOX 8003 SEOUL, KOREA TELEX: DWELEC K28177-8 CABLE: “DAEWOOELEC” S/M No. : SB092LH001 PRINTED DATE: Mar. 2006...