Table of Contents
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Service Manual
Split System
Air Conditioner
Model: DSB-075L
DSB-075LH
DSB-095L
DSB-095LH
DSB-125L
DSB-125LH
DSB-185L
DSB-185LH
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 : DSB075L001
MAY., 2006
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Summary of Contents for Daewoo DSB-075L
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Page 1: Service Manual
S/M NO : DSB075L001 Service Manual Split System Air Conditioner Model: DSB-075L DSB-075LH DSB-095L DSB-095LH DSB-125L DSB-125LH DSB-185L DSB-185LH 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. -
Page 2: Table Of Contents
Elite SERIES (R22) Contents 1. Features………………………………………………………………… 02 2. Specification………………………………………………………..……03 3. Dimensions…………………………………………………………..… 05 4. Refrigeration cycle diagram……………………………………………08 5. Capacity table…………………………………………………………...09 6. Wiring diagram…………………………………………………..………15 7. Electronic function………………………………………….…………...20 8. Troubleshooting……………………………………………………….…28 9. Characteristic of temp. sensor…………………………………………31... -
Page 3: Features
1.Features 1.1 Compact design 1.2 LED display... -
Page 4: Specification
2.Specification Model DSB-075L DSB-075LH DSB-095L DSB-095LH Power supply Ph-V-Hz 220-240V~,50Hz 220-240V~,50Hz 220-240V~,50Hz 220-240V~,50Hz Capacity Btu/h 7000 7000 9000 9000 Input 1010 1010 Cooling Rated current 8.8,2.6 8.8,2.6 Btu/w.h, w/w 8.9,2.61 8.6,2.61 Capacity Btu/h 8000 10000 Input 1020 Heating Rated current 4.45... - Page 5 Model DSB-125L DSB-125LH DSB-185L DSB-185LH Power supply Ph-V-Hz 220-240V~,50Hz 220-240V~,50Hz 220-240V~,50Hz 220-240V~,50Hz Capacity Btu/h 12000 12000 18000 18000 Input 1350 1350 1960 1960 Cooling Rated current Btu/w.h, w/w 8.9,2.6 8.9,2.6 9.2,2.7 9.2,2.7 ___________ Capacity Btu/h 14000 19000 Input ___________ 1350 1856 Heating ___________...
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Page 6: Dimensions
3.Dimensions 3.1 Indoor unit DSB-075L, DSB-075LH DSB-095L, DSB-095LH DSB-125L, DSB-125LH... - Page 7 DSB-185L, DSB-185LH...
- Page 8 3.4 Outdoor unit DSB-075L, DSB-075LH DSB-095L, DSB-095LH 3.5 Outdoor unit DSB-125L, DSB-125LH DSB-185L, DSB-185LH...
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Page 9: Refrigeration Cycle Diagram
4.Refrigeration cycle diagram... -
Page 10: Capacity Table
5. Capacity table 5.1 DSB-075L SUMMER OUTDOOR TEMPERATURE DRY Indoor 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC Conditions Total capacity kW 2.02 1.92 1.79 1.64 1.51 1.41 21ºC D Sensitive capacity kW 1.44 1.39 1.34 1.27 1.20 1.15 15ºC W Input kW. -
Page 11: Input Kw
WINTER OUTDOOR CONDITIONS 12ºC D 7ºC D 4ºC D 0ºC D -4ºC D -7ºC D Indoor 11ºC W 6ºC W 3ºC W -1ºC W -6ºC W -8ºC W Conditions Capacity kW 2.75 2.45 2.17 1.40 1.17 1.13 15ºC Input kW. 0.97 0.86 0.77... - Page 12 5.4 DSB-095LH SUMMER OUTDOOR TEMPERATURE DRY Indoor 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC Conditions Total capacity kW 2.44 2.32 2.16 1.98 1.82 1.70 21ºC D Sensitive capacity kW 1.68 1.63 1.56 1.48 1.40 1.34 15ºC W Input kW. 0.87 0.95 1.02 1.09 1.17...
- Page 13 5.5 DSB-125L SUMMER OUTDOOR TEMPERATURE DRY Indoor 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC Conditions Total capacity kW 3.38 3.21 2.99 2.75 2.52 2.35 21ºC D Sensitive capacity kW 2.53 2.28 2.18 2.07 1.96 1.88 15ºC W Input kW. 1.20 1.30 1.41 1.51 1.61...
- Page 14 WINTER OUTDOOR CONDITIONS 12ºC D 7ºC D 4ºC D 0ºC D -4ºC D -7ºC D Indoor 11ºC W 6ºC W 3ºC W -1ºC W -6ºC W -8ºC W Conditions Capacity kW 4.81 4.28 3.78 2.45 2.04 1.97 15ºC Input kW. 1.61 1.44 1.29...
- Page 15 5.8 DSB-185LH SUMMER OUTDOOR TEMPERATURE DRY Indoor 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC Conditions Total capacity kW 4.69 4.45 4.15 3.81 3.50 3.27 21ºC D Sensitive capacity kW 3.28 3.18 3.04 2.88 2.74 2.62 15ºC W Input kW. 1.70 1.84 1.99 2.14 2.28...
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Page 16: Wiring Diagram
6. Schematic diagram and wiring diagram 6.1 Schematic diagram R18 10K IN4007*4 7812 +12V-a 7805 ZERO R19 150 Vout Vout REC1 R16 12K IN4148 +12V-a 9014 D11 1N4148 R215.1K D12 1N4148 FANSP_FEEDBACK RECEIVER_V TRAN S 2200uF/25V 1000uF/16V 470uF/16V FAN_BACK IC10 7812 +12V-b 10uF/16V IN4007*4... - Page 17 6.2 Wiring diagram 6.2.1 Cooling only 6.2.1.1 DSB-075L, DSB-095L, DSB-125L IND OO R UNIT OUT DO OR UNIT 1 2(N) Y&G BLACK BLACK BLACK MOTOR BLUE BLUE Y&G COMPRESSOR CAPACITOR...
- Page 18 6.2.1.2 DSB-185L INDOOR UNIT OUTDOOR UNIT Y&G BLACK BLACK OVERLOAD BLACK RELAY COMPRESSOR MOTOR BLUE WHITE BLUE COMPRESSOR CAPACITOR CAPACITOR...
- Page 19 6.2.2 Heating/cooling 6.2.2.1 DSB-075LH, DSB-095LH, DSB-125LH IND OOR UN IT OUT DOOR U NIT...
- Page 20 6.2.2.2 DSB-185LH I N D O O R U N I T O U T D O O R U N I T Y & G B L U E B L U E R E D 4 - W A Y B L A C K O V E R L O A D R E L A Y...
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Page 21: Electronic Function
7 Electronic function 7.1 Electric Control working environment 7.1.1 input voltage: 175~253V 7.1.2 Input power frequency:50Hz 7.1.3 Ambient temperature: -7°C~+45°C 7.1.4 Indoor fan normal working amp is less than 1A, 7.1.5 Outdoor fan. Normal working amp is less than 1.5A 7.1.6 Four-way valve normal working amp is less than 1A. - Page 22 Protection 7.4.1 3 minutes delay at restart for compressor. 7.4.2 Sensor protection at open circuit and breaking disconnection 7.4.3 Fan Speed is out of control. When Indoor Fan Speed is too high(higher than High Fan+300RPM)or too low(lower than 400RPM), the unit stops and LED displays failure information and can’t returns to normal operation automatically.
- Page 23 Anti-freezing control to indoor evaporator at cooling mode( T: evaporator temp. ) Condition Compressor Outdoor fan Temp. Time Evaporator T> TE6 Temp. up T< TE6 >5 Minutes Evaporator T> TE5 Temp. down T< TE5 >5 Minutes 7.7 Dehumidifying mode 7.7.1 The 4-way valve is off in dehumidifying mode 7.7.2 Compressor and Indoor Fan actions in dehumidifying mode...
- Page 24 T= Indoor exchanger temp. Indoor exchanger temp. up T<TE1 TE1<T<TE2 Breeze T>TE2 Setting fan speed Indoor exchanger temp. down T> TE3 Setting fan speed TE3<T<TE4 Breeze T<TE4 7.8.5 Auto wind at heating mode Condition Indoor fan speed T=Indoor Temp.-Setting Temp. Room temp.
- Page 25 (c) For any case leading to frost, if A/C defrosts for 7.5 minutes three times, the forth defrosting time is 10 minutes. →7.5-minute defrost → 7.5-minute defrost→7.5-minute defrost→10-minute defrost→ 7.10 Ending condition of defrosting If one of following conditions is satisfied, end the defrost and turn into heating mode: A.
- Page 26 7.14 Forced Auto function Select forced auto function with the forced auto button or the switch. In forced auto status the A/C operates at remote control mode with a set temp. of 24℃. 7.15 Timer Function 7.16 Economic Running 7.16.1 The economic running function is available at cooling, heating or auto mode.
- Page 27 Model DSB-075L DSB-075LH DSB-095L DSB-095LH I3SEC 8.5A 8.5A 10.0A 10.0A I5MIN 6.5A 6.5A 7.5A 7.5A IFAN 5.5A 5.5A 5.5A 5.5A IRESTORE 4.5A 4.5A 4.5A 4.5A IDEFROST 3.5A 3.5A 28℃ 28℃ 32℃ 32℃ 30℃ 30℃ 26℃ 26℃ 4℃ 4℃ 4℃ 4℃...
- Page 28 DSB-125L DSB-125LH DSB-185L DSB-185LH Model I3SEC 12.0A 12.0A 16.0A 16.0A I5MIN 8.5A 8.5A 13.0A 13.0A IFAN 7.5A 7.5A 11.0A 11.0A IRESTORE 6.5A 6.5A 9.5A 9.5A IDEFROST 5.0A 7.5A ANGLCOOL ANGLHEAT ANGLOFF 0° 0° 0° 0° THDEFROST 17°C TMDEFROST 18°C TLDEFROST 19°C...
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Page 29: Troubleshooting
8.Troubleshooting 8.1 Display board Signal receptor AU TO indicator Thi s indicator illuminates whe n the air conditioner i s in AUTO operation. DE FROST indicator (F or Cooling & H eating mo dels only) Thi s indicator illuminates whe n the air conditioner starts defrostin g automati cally or when the warm air control fea ture is activated in he ating oper ation. -
Page 30: Diagnostic Chart
8.3 Diagnostic Chart 8.3.1 After energizing, no indicator is lighted and the air conditioner can’t be operated. After energizing, the air conditioner can’t be operated Check if AC220V power supply outputs to Indoor PCB. Check if AC220V exists at the primary coil of transformer. Indoor PCB is defective Check if AC14.5V exists at the secondary coil of transformer. - Page 31 8.3.3 Failure phenomenon Failure phenomenon Operation lamp Timer lamp Indoor fan speed has been out of control for over 1 minute ☆ Indoor room temp. or evaporator sensor is open circuit or short circuit ☆ Over current protection of the compressor occurs 4 times ☆...
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Page 32: Characteristic Of Temp. Sensor
9. Characteristic of temp. sensor Temp.℃ Resistance KΩ Temp.℃ Resistance KΩ Temp.℃ Resistance KΩ 62.2756 14.6181 4.3874 58.7079 13.918 4.2126 56.3694 13.2631 4.0459 52.2438 12.6431 3.8867 49.3161 12.0561 3.7348 46.5725 11.5 3.5896 10.9731 3.451 41.5878 10.4736 3.3185 39.8239 3.1918 37.1988 9.5507 3.0707 35.2024... - Page 33 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: MAY., 2006...
- Page 34 ABOUT THIS MANUAL ABOUT THIS MANUAL V V I I S S I I O O N N C C R R E E A A T T I I V V E E , , I I N N C C . . 서울...
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