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DAEWOO ELECTRONICS DSB-300L - User Manual

DAEWOO ELECTRONICS DSB-300L
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Service Manual
Split System
Air Conditioner
Model: DSB-300L
DSB-300LH
S/M NO : DSB300LH001
Aug., 2005
✔ 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

Table of Contents

Questions and Answers

  • T
    tiffany29Aug 1, 2025
    Why are the Operation, time, Defrosting, and auto indicators flickering on my DAEWOO ELECTRONICS DSB-300L Air Conditioner?
    • N
      Nicholas SandersAug 1, 2025
      If the Operation, time, and Defrosting indicators (or fan indicator for cooling-only models) along with the auto indicator flicker at 5Hz on your DAEWOO ELECTRONICS Air Conditioner, it means that there is a Four times Current protection (PRCUR1) issue.
  • D
    dmillerAug 8, 2025
    What does it mean when the auto indicator flickers on my DAEWOO ELECTRONICS DSB-300L Air Conditioner?
    • C
      Charles RoachAug 8, 2025
      If the auto indicator is flickering at 5Hz on your DAEWOO ELECTRONICS Air Conditioner, it indicates an EEROM Communication error.
  • B
    Bill WilsonAug 13, 2025
    Why is the time indicator flickering on my DAEWOO ELECTRONICS DSB-300L?
    • J
      Jeremy Porter MDAug 13, 2025
      If the time indicator flickers at 5Hz on your DAEWOO ELECTRONICS Air Conditioner, it means the room temperature sensor is either open or short.
  • K
    Kevin AndersenAug 20, 2025
    What does it mean when the operation indicator flickers on my DAEWOO ELECTRONICS Air Conditioner?
    • R
      Robin RussoAug 20, 2025
      If the operation indicator flickers at 5Hz on your DAEWOO ELECTRONICS Air Conditioner, it indicates that the evaporator temperature sensor is open or short.
  • K
    Kelli EdwardsAug 25, 2025
    What does it mean when the Defrosting indicator flickers on my DAEWOO ELECTRONICS DSB-300L?
    • J
      Jerry HensleyAug 26, 2025
      If the Defrosting indicator flickers at 5Hz on your DAEWOO ELECTRONICS Air Conditioner, it means the condenser temperature sensor is open or short.

Summary

Specifications

Operation Limits

Wiring Diagram

DSB-300 L Indoor Unit Wiring Diagram

Wiring diagram for the DSB-300L indoor unit.

DSB-300 L Outdoor Unit Wiring Diagram

Wiring diagram for the DSB-300L outdoor unit.

DSB-300 LH Indoor Unit Wiring Diagram

Wiring diagram for the DSB-300LH indoor unit.

DSB-300 LH Outdoor Unit Wiring Diagram

Wiring diagram for the DSB-300LH outdoor unit.

Troubleshooting

Electronic Control

Cooling Mode Operation

Explains compressor and outdoor fan action in cooling mode.

Heating Mode Operation

Defrosting Mode Procedures

Conditions and sequence for defrosting mode.

Automatic Mode Selection

Economic Mode Operation

Manual Operation Modes

System Protecting Functions

Lists compressor delay, sensor, EEPROM, and current protections.

Model Specific Parameters

DAEWOO ELECTRONICS DSB-300L Specifications

General IconGeneral
TypeSplit System
Cooling Capacity30000 BTU/h
Power Supply220-240V, 50Hz
RefrigerantR410A
Operating Temperature (Cooling)18-43°C
Weight (Indoor Unit)8 kg
Weight (Outdoor Unit)25 kg
Energy Efficiency Ratio (Cooling)3.2
Operating Temperature (Heating)24°C
Dimensions (Outdoor Unit)700 mm

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