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Service Manual
Split System
Air Conditioner
Model: DSB-300L
DSB-300LH
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 : DSB300LH001
Aug., 2005
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Table of Contents
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Summary of Contents for DAEWOO ELECTRONICS DSB-300L
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Page 1: Service Manual
S/M NO : DSB300LH001 Service Manual Split System Air Conditioner Model: DSB-300L DSB-300LH 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 Aug., 2005... -
Page 2: Table Of Contents
Contents CONTENTS 1. FEATURES ........................2 2. SPECIFICATIONS.....................4 3. OUTLINE AND DIMENSIONS .................5 4. REFRIGERATION CYCLE DIAGRAM ..............6 5. OPERATION LIMITS....................8 6. WIRING DIAGRAM ....................9 7. TROUBLESHOOTING....................13 8. ELECTRONIC CONTROL ..................14 9. EXPLODED VIEW PARTS..................20... -
Page 3: Features
FEATURES 1.1 The evaporator employs a 2-bend structure which enlarges the heat exchange surface. 1.2 With three grilles, the outlet frame and the base plate are integrally designed and of easy installation. 1.3 The front panel is tightly fixed with the front frame by simply buckling the latter with a buckle mechanism on the panel. -
Page 4: Specifications
SPECIFICATIONS DAEWOO MODEL DSB-300L DSB-300LH Power supply Ph-V-Hz 220V,50HZ 220,50HZ Cooling Capacity Btu/h 28000 28000 Input 3150 3130 Rated current 14.2 14.1 Btu/w.h Heating Capacity Btu/h 31000 Input 3150 Rated current 14.2 Btu/w.h Moisture Removal Max. input consumption 3840 3880 Max. - Page 5 DAEWOO MODEL DSB-300L DSB-300LH Indoor air flow (Hi/Mi/Lo) m3/h 1050/950/855 1050/950/855 Indoor noise level (Hi/Mi/Lo) dB(A) 48/45/42 48/45/42 Indoor unit Dimension (W*H*D) 1190X320X205 1190X320X205 Packing (W*H*D) 1265X445X320 1265X445X320 Net/Gross weight 20/25 20/25 Outdoor fan motor Model YDK100-6D YDK100-6D Brand Welling...
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Page 6: Outline And Dimensions
OUTLINE AND DIMENSIONS... -
Page 7: Refrigeration Cycle Diagram
Refrigeration cycle diagram Heating and cooling(DSB-300LH) - Page 8 Cooling only(DSB-300L)
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Page 9: Operation Limits
Operation limits Cooling operation Note : The chart is the result from the continuous operation under constant air temperature conditions. However, excludes the initial pull-down stage. Heating operation Note : The chart is the result from the continuous operation under constant air temperature conditions. However, excludes the initial pull-down stage. -
Page 10: Wiring Diagram
WIRING DIAGRAM DSB-300L Indoor Unit... - Page 11 DSB-300L Outdoor Unit...
- Page 12 DSB-300LH Indoor Unit...
- Page 13 DSB-300LH Outdoor Unit...
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Page 14: Troubleshooting
TROUBLESHOOTING LED status Operation indicator, time indicator, Defrosting Four times Current protection (PRCUR1) 5Hz indicator (fan indicator, for cooling only type)auto indicator flicker at 5Hz Time indicator flickers at 5Hz the room temperature sensor o is open or short Operation indicator flickers at 5Hz the evaporator temperature sensor is open or short Defrosting indicator flickers at 5Hz... -
Page 15: Electronic Control
ELECTRONIC CONTROL 8.1 Fan only mode Fan speed is high/mid/low/ Auto 8.2 Cooling mode The 4-way valve is closed at cooling mode. The action of the compressor and the outdoor fan: T: Room temp. Ts: Setting temp. Condition Compressor Outdoor fan Temp. -
Page 16: Dehumidifying Mode
8.3 Dehumidifying mode 8.3.1 Indoor fan speed at low speed. 8.3.2 Protection is same as cooling mode. 8.4 Heating mode 8.4.1 Generally, the 4-way valve is open in heating mode, but it is closed in defrosting mode. 8.4.2 Generally, the outdoor fan is turned off with the on-off action of compressor in heating mode, except for the defrosting mode or the end of defrost. -
Page 17: Defrosting Mode
Auto wind Condition Indoor fan speed T=Indoor Temp. -Setting Temp. Room temp. up T<2_ Med. speed T>2_ Low speed. Room temp. down T> 0_ Low speed. T<0_ Med. speed Indoor evaporator high-temperature protection Condition Compressor Outdoor fan T= Indoor exchanger temp. Indoor exchanger T<TE8 temp. -
Page 18: Auto Mode
8.5.3 Time sequence of the whole defrosting procedure is as follows: Remark: when the evaporator pipe sensor temp. more than TE16, The indoor fan start to run. 8.6 Auto mode 8.6.1 When running in automatic mode, the air conditioner automatically selects one of the following operation modes: cooling, heating or ventilation according to the difference between room temp. -
Page 19: Manual Operation
8.8 Manual operation Manual operation is controlled by touching buttons and divided into force cooling and forced auto mode. It transfers between these two modes by pressing the buttons, the cycling order of the button press is: Remote mode Forced auto Forced cooling 8.8.1 Forced Cooling... -
Page 20: Auto Restart Function
RESTORE 8.11 Auto restart Function In case of a sudden power failure, this function automatically sets the unit to previous settings before the power failure when power returns. 8.12 Models and Parameters Model DSB-300L DSB-300LH I3SEC I5MIN IFAN IRESTORE 25°C 32°C... -
Page 21: Exploded View Parts
Exploded View Parts DSB-300L 220--240V,50Hz : Indoor Unit... - Page 22 Part Name Quantity Sale code BOM code Remark Front Panel 10121111001 2113079189 Air Filter 10121121202 2113070011 Air cleaner cover 10121121203 2113070012 Air cleaner holder 10121121204 2113070013 Air cleaner 10121121205 2113070060 Panel frame 10121121206 2113079001 Front Evaporator ass'y 11330113001 2153079053 Rear Evaporator ass'y 11330113002 2153079052 Bearing holder...
- Page 23 DSB-300L 220--240V,50Hz : Outdoor Unit...
- Page 24 Part Name Quantity Sale code BOM code Remark Clamp for front net 10112121801 2113511801 Front net 10118121801 2124550017 Front clapboard 10924121801 2124550030 Propeller fan 10118121804 2114550002 Fan motor 11321111801 2240043104 Holder for fan motor 10118121809 2124550020 Foam over holder for motor 10118121807 2224550001 Cover...
- Page 25 DSB-300LH 220-240V,50Hz : Indoor Unit...
- Page 26 Part Name Quantity Sale code BOM code Remark Front Panel 10121111001 2113079189 Air Filter 10121121202 2113070011 Air cleaner cover 10121121203 2113070012 Air cleaner holder 10121121204 2113070013 Air cleaner 10121121205 2113070060 Panel frame 10121121206 2113079001 Front Evaporator ass'y 11330113001 2153079053 Rear Evaporator ass'y 11330113002 2153079052 Bearing holder...
- Page 27 DSB-300LH 220-240V, 50Hz : Outdoor Unit...
- Page 28 Part Name Quantity Sale code BOM code Remark Clamp for front net 10112121801 2113511801 Front net 10118121801 2124550017 Front clapboard 10924121801 2124550030 Propeller fan 10118121804 2114550002 Fan motor 11321111801 2240043104 Holder for fan motor 10118121809 2124550020 Foam over holder for motor 10118121807 2224550001 Cover...
- Page 29 DAEWOO ELECTRONICS CORP. 686, AHYEON-DONG MAPO-GU SEOUL, KOREA C.P.O. BOX 8003 SEOUL, KOREA TELEX: DWELEC K28177-8 CABLE: “DAEWOOELEC” PRINTED DATE: Aug., 2005...
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