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Daewoo DMB-1822LH User Manual

Daewoo DMB-1822LH
108 pages
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CONTENTS
1. SPECIFICATIONS.....................................................................................................2
2. CONFIGURATION.....................................................................................................4
3. OUTLINE AND DIMENSIONS .................................................................................5
4. INSTALLATION SECTION......................................................................................10
5. OPERATION............................................................................................................26
6. WIRING DIAGRAM .................................................................................................41
7. REFRIGERANT CYCLE.........................................................................................45
8. CONTROL BLOCK DIAGRAM...............................................................................46
9. TROUBLE SHOOTING...........................................................................................48
10. PCB DRIVING DESCRIPTION ............................................................................54
11. KEY COMPONENTS OF ELECTRONIC CIRCUIT ...........................................76
12. DISASSEMBLY INSTRUCTIONS........................................................................80
1) Indoor Unit ........................................................................................................80
2) Outdoor Unit .....................................................................................................83
3) Exploded Diagram (Indoor Unit)......................................................................84
4) Exploded Diagram (Outdoor Unit)...................................................................92
5) Control Box Assembly......................................................................................96
6) Control Panel Assembly.................................................................................102
Contents
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Daewoo DMB-1822LH Specifications

General IconGeneral
TypeSplit System
Cooling Capacity18000 BTU/h
Power Supply220-240V, 50Hz
Noise Level (Outdoor)52 dB(A)
Operating Temperature (Cooling)18°C to 43°C

Summary

1. SPECIFICATIONS

2. CONFIGURATION

3. OUTLINE AND DIMENSIONS

Indoor Unit Dimensions and Diagrams

Details dimensions and diagrams for indoor units.

Outdoor Unit Dimensions and Diagrams

Details dimensions and diagrams for outdoor units.

4. INSTALLATION SECTION

Basic and Optional Accessories

Lists and describes included and optional installation accessories.

Installation Diagram Overview

Provides a visual overview of indoor and outdoor unit connections.

Site Selection and Wall Bracket Installation

Guidelines for choosing location and mounting the wall bracket.

AC Power and Signal Wire Connections

Step-by-step guide for connecting AC power and signal wires.

Tubing and Drain Hose Installation

Procedures for connecting copper tubing and drain hose.

Finishing Installation Steps

Guides on taping, putty, and wall cap installation.

System Purging and Testing Procedures

Covers air purging, evacuation, and final test run.

5. OPERATION

Indoor Unit Parts and Functions

Identifies and describes parts of the indoor unit's operation.

Remote Controller Overview

Details the functions and buttons of the remote control.

Remote Controller Display Indicators

Explains the indicators and symbols on the remote display.

Key Operational Functions

Explains timer, temp control, and signal reception.

Fan Speed Settings

Details fan speed settings and auto operation modes.

Operating Modes Explained

Explains sleep mode, temp adjustments, and freeze protection.

Emergency and Delay Features

Covers emergency operation and compressor time delay.

Specific Operational Modes

Explains dehumidification, air discharge, and quick modes.

6. WIRING DIAGRAM

Wiring Diagram Overview

Shows the overall wiring configuration of the system.

Main Electric Parts for Indoor Unit

Lists key electrical components for the indoor unit.

Main Electric Parts for Outdoor Unit

Lists key electrical components for the outdoor unit.

7. REFRIGERANT CYCLE

8. CONTROL BLOCK DIAGRAM

Indoor Part Control Block Diagram

Illustrates the control logic for the indoor unit.

Outdoor Part Control Block Diagram

Illustrates the control logic for the outdoor unit.

9. TROUBLE SHOOTING

Diagnostic Function and Error Codes

Lists error codes and their corresponding check points.

Unit Not Running Troubleshooting

Guides for diagnosing when the unit fails to run.

Indoor Fan Not Running Troubleshooting

Steps to resolve issues with the indoor fan.

Fan and Compressor Not Running

Troubleshooting for when fan and compressor do not operate.

Compressor Not Running Troubleshooting

Steps to diagnose compressor failure.

10. PCB DRIVING DESCRIPTION

Outdoor PCB Circuit Diagram

Detailed circuit diagram for the outdoor PCB.

Indoor PCB Circuit Diagrams

Circuit diagrams for indoor unit PCBs (9K and 12K).

PCB Component Lists

Lists components for outdoor and indoor control PCBs.

Power Supply, Oscillator, and Sensor Circuits

Explains power, oscillator, and sensor circuit functions.

Driving and Control Circuits

Covers Triac, Remote, Mode, Micom, Reset, Fan, Buzzer circuits.

Communication and Relay Circuits

Explains communication and relay control circuits.

11. KEY COMPONENTS OF ELECTRONIC CIRCUIT

Indoor MICOM IC Details

Pin assignments and functions of the indoor MICOM IC.

Outdoor MICOM IC Details

Pin assignments and functions of the outdoor MICOM IC.

Darlington Arrays and Voltage Regulators

Explains the function of Darlington arrays and voltage regulators.

Reset IC Details

Details the function and operation of the reset IC.

12. DISASSEMBLY INSTRUCTIONS

Indoor Unit Disassembly Procedures

Step-by-step guide for taking apart the indoor unit.

Outdoor Unit Disassembly Procedures

Step-by-step guide for taking apart the outdoor unit.

Indoor Unit Exploded Diagrams

Visual breakdown of indoor unit components.

Outdoor Unit Exploded Diagrams

Visual breakdown of outdoor unit components.

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