Daewoo DSB-121LH - User Manual

Service Manual
Split System Air
Conditioner
Model: DSB-070LH/DSB-071LH
DSB-091LH/DSB-092LH
DSB-121LH/DSB-122LH
DSB-123LH
DSB-182LH/LH-R
DSA-183LH-R
DSB-240LH-R
DSA-240LH-R
DAEWOO ELECTRONICS CO., LTD.
by Nemko

Summary

Specifications

DSB-070 LH;071 LH Specifications

Detailed specifications for DSB-070LH and DSB-071LH air conditioner models.

DSB-091 LH;092 LH Specifications

Detailed specifications for DSB-091LH and DSB-092LH air conditioner models.

DSB-121 LH;122 LH Specifications

Detailed specifications for DSB-121LH and DSB-122LH air conditioner models.

DSB-123 LH Specifications

Detailed specifications for the DSB-123LH air conditioner model.

DSB-182 LH Specifications

Detailed specifications for the DSB-182LH air conditioner model.

DSB-182 LH-R Specifications

Detailed specifications for the DSB-182LH-R air conditioner model.

DSA-183 LH-R Specifications

Detailed specifications for the DSA-183LH-R air conditioner model.

DSB-240 LH-R Specifications

Detailed specifications for the DSB-240LH-R air conditioner model.

DSA-240 LH-R Specifications

Detailed specifications for the DSA-240LH-R air conditioner model.

Outline and Dimensions

Indoor Unit Dimensions

Diagrams and dimensions for various indoor unit models.

Outdoor Unit Dimensions

Diagrams and dimensions for various outdoor unit models.

Operation and Parts Description

Indoor Unit Parts and Functions

Description and diagrams of indoor unit parts and their functions.

Outdoor Unit Connections and Operation

Diagrams showing outdoor unit connections and operational flow.

Remote Controller

Remote Controller Button Functions

Explanation of each button's function on the remote controller.

Remote Controller Display and Battery Replacement

Description of the remote controller display indicators and battery replacement.

Functional Descriptions

Timer, Temperature Control, and Buzzer Functions

Describes OFF-Timer, ON-Timer, room temp control, and buzzer.

Fan Speed, Auto, Sleep, Emergency, and Frost Prevention

Explains fan speed, auto operation, sleep, emergency, and frost prevention.

Compressor Delay, Auto Mode, Dehumidification, and Quick Modes

Details compressor delay, auto mode, dehumidification, and quick modes.

Self-Diagnostic Function

Explains the self-diagnostic function and error codes.

Wiring Diagrams

Indoor Unit Wiring Diagrams

Circuit diagrams for various indoor unit models.

Outdoor Unit Wiring Diagrams

Circuit diagrams for various outdoor unit models.

Main Electric Parts Lists

Indoor Unit Electric Parts

List of main electric parts for indoor units.

Refrigerant Cycle

Refrigerant Charge and Pipe Specifications

Details refrigerant charge quantities and pipe sizes for models.

Control Block Diagram

Control Block Diagram: DSB-071 LH, 092 LH, 123 LH

Control block diagram for specific DSB models.

Control Block Diagram: DSB-121 LH;122 LH and others

Control block diagram for various DSB and DSA models.

Troubleshooting

General Troubleshooting Flowchart and Notes

General troubleshooting steps, notes, and error code information.

Troubleshooting: Unit Not Running

Flowchart for diagnosing when the unit does not run.

Troubleshooting: Indoor Fan Issue

Flowchart for diagnosing indoor fan operational problems.

Troubleshooting: Outdoor Fan and Compressor Issues

Flowchart for diagnosing outdoor fan and compressor issues.

Troubleshooting: Compressor Only Issue

Flowchart for diagnosing issues where only the compressor does not run.

PCB Circuit Diagrams

PCB Diagram: DSB-071 LH, 092 LH

Circuit diagram for the PCB of DSB-071LH and DSB-092LH.

PCB Diagram: DSB-123 LH

Circuit diagram for the PCB of DSB-123LH.

PCB Diagram: DSB-121 LH;DSB-122 LH

Circuit diagram for the PCB of DSB-121LH and DSB-122LH.

PCB Diagram: DSB-182 LH;182 LH-R and others

Circuit diagram for PCBs of DSB-182LH and other related models.

Detailed Component Lists

Indoor Unit Components: DSB-071 LH

List of components for the indoor unit of DSB-071LH.

Indoor Unit Components: DSB-092 LH

List of components for the indoor unit of DSB-092LH.

Indoor Unit Components: DSB-123 LH

List of components for the indoor unit of DSB-123LH.

Indoor Unit Components: DSB-182 LH;182 LH-R and others

List of components for indoor units DSB-182LH and related models.

PCB Components: LED PCB

List of components for the LED PCB across various models.

PCB Components: Switch PCB

List of components for the Switch PCB.

Circuit Function Descriptions

DC Power Supply Circuit

Description of the DC power supply circuit functionality.

Oscillator and Sensor Circuits

Description of oscillator and sensor circuits.

Triac Driving Circuit

Description of the Triac driving circuit functionality.

Remote Controller Signal and Mode Selection

Description of remote controller signal reception and mode selection.

Micom Power Supply, Reset, and Function Selection

Description of Micom power, reset, and function selection.

Buzzer Driving, Zero Crossing Detect, and Stepping Motor Driving

Descriptions of buzzer, zero crossing, and stepping motor circuits.

Remote Controller Functional Test

Remote Controller Functional Test Procedure

Step-by-step procedure for testing remote controller functionality.

Key Electronic Components

U1 (MICOM) Component Description

Description of the U1 MICOM component.

Darlington Arrays and Voltage Regulators

Description of Darlington arrays and voltage regulators.

Reset IC Component Description

Description of the U9 KIA7042P Reset IC.

Disassembly Instructions: Indoor Unit

DSB-070 LH;DSB-091 LH Disassembly

Instructions for disassembling the DSB-070LH/DSB-091LH indoor unit.

DSB-071 LH;DSB-092 LH Disassembly

Instructions for disassembling the DSB-071LH/DSB-092LH indoor unit.

DSB-121 LH;DSB-122 LH Disassembly

Instructions for disassembling the DSB-121LH/DSB-122LH indoor unit.

DSB-123 LH Disassembly

Instructions for disassembling the DSB-123LH indoor unit.

DSB-182 LH;DSB-182 LH-R Disassembly

Instructions for disassembling DSB-182LH/DSB-182LH-R indoor units.

DSB240 LH-R;DSA-240 LH-R Disassembly

Instructions for disassembling DSB240LH-R/DSA-240LH-R indoor units.

Disassembly Instructions: Outdoor Unit

DSB-070 LH;...;123 LH Outdoor Unit Disassembly

Instructions for disassembling outdoor units DSB-070LH to DSB-123LH.

DSB-182 LH;...;DSA-183 LH-R Outdoor Unit Disassembly

Instructions for disassembling outdoor units DSB-182LH and DSA-183LH-R.

DSB-240 LH-R;DSA-240 LH-R Outdoor Unit Disassembly

Instructions for disassembling outdoor units DSB-240LH-R and DSA-240LH-R.

Indoor Unit Exploded Diagrams and Parts Lists

DSB-070 LH;DSB-091 LH Exploded Diagram

Exploded view diagram for DSB-070LH/DSB-091LH indoor units.

DSB-070 LH;DSB-091 LH Parts List

Parts list for DSB-070LH/DSB-091LH indoor units.

DSB-071 LH;DSB-092 LH Exploded Diagram

Exploded view diagram for DSB-071LH/DSB-092LH indoor units.

DSB-071 LH;DSB-092 LH Parts List

Parts list for DSB-071LH/DSB-092LH indoor units.

DSB-121 LH Exploded Diagram

Exploded view diagram for DSB-121LH indoor unit.

DSB-121 LH;122 LH Parts List

Parts list for DSB-121LH/122LH indoor units.

DSB-123 LH Exploded Diagram

Exploded view diagram for DSB-123LH indoor unit.

DSA-123 LH Parts List

Parts list for DSA-123LH indoor unit.

DSB-182 LH;LH-R Exploded Diagram

Exploded view diagram for DSB-182LH/LH-R indoor units.

DSB-182 LH;LH-R Parts List

Parts list for DSB-182LH/LH-R indoor units.

Outdoor Unit Exploded Diagrams and Parts Lists

DSB-182 LH;182 LH-R;DSA-183 LH-R Exploded Diagram

Exploded view diagram for DSB-182LH/182LH-R/DSA-183LH-R outdoor units.

DSB-182 LH;182 LH-R;DSA-183 LH-R Parts List

Parts list for DSB-182LH/182LH-R/DSA-183LH-R outdoor units.

DSB-240 LH-R;DSA-240 LH-R Exploded Diagram

Exploded view diagram for DSB-240LH-R/DSA-240LH-R outdoor units.

DSB-240 LH-R;DSA-240 LH-R Parts List

Parts list for DSB-240LH-R/DSA-240LH-R outdoor units.

Control Box Assembly and Parts

DSB-070 LH;...;092 LH Control Box Assembly

Assembly diagram for DSB-070LH/.../092LH control box.

DSB-070 LH;...;092 LH Control Box Parts

Parts list for DSB-070LH/.../092LH control box.

DSB-121 LH;DSB-122 LH Control Box Assembly

Assembly diagram for DSB-121LH/DSB-122LH control box.

DSB-090 LH;DSB-121 LH;DSB-122 LH Control Box Parts

Parts list for DSB-090LH/DSB-121LH/DSB-122LH control box.

DSB-123 LH Control Box Assembly

Assembly diagram for DSB-123LH control box.

DSB-123 LH Control Box Parts

Parts list for DSB-123LH control box.

DSB-182 LH;182 LH-R Control Box Assembly

Assembly diagram for DSB-182LH/182LH-R control box.

DSB-182 LH;182 LH-R Control Box Parts

Parts list for DSB-182LH/182LH-R control box.

DSA-183 LH-R;...;DSA-240 LH-R Control Box Assembly

Assembly diagram for DSA-183LH-R/.../DSA-240LH-R control box.

DSA-183 LH-R;...;DSA-240 LH-R Control Box Parts

Parts list for DSA-183LH-R/.../DSA-240LH-R control box.

Daewoo DSB-121LH Specifications

General

Cooling Capacity	12000 BTU/h
Refrigerant	R410A
Power Supply	220-240V, 50Hz
Power Consumption (Cooling)	1080 W
Net Weight (Indoor Unit)	9 kg
Type	Split
Operating Temperature (Cooling)	18°C to 43°C