Table of Contents

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TECHNICAL DATA
& SERVICE MANUAL
UNIT MODELS :
WALL 18000 UI + WALL 18000 UE
SPLIT SYSTEM AIR CONDITIONER
May 2016

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Table of Contents
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Summarization of Contents

Technical Information
2. Specifications
Details technical specifications including capacity, power, airflow, and efficiency ratings.
5. Electrical Part
Covers electrical diagrams, including wiring schematics and PCB layouts for troubleshooting.
6. Function and Control
Explains the various operating modes, functions, and how to use the remote controller.
Installation and Maintenance
7. Notes for Installation and Maintenance
Provides critical safety precautions and important notes before performing installation or maintenance tasks.
8. Installation
Outlines the general procedures and steps required for installing the air conditioning unit.
8.4 Electric Connection Requirement
Details the requirements for electrical connections, including safety and wiring specifications.
8.5 Installation of Indoor Unit
Provides step-by-step instructions for the proper installation of the indoor unit.
8.7 Vacuum Pumping and Leak Detection
Explains the process for vacuum pumping and leak detection in the refrigerant circuit.
Maintenance and Troubleshooting
9.1 Error Code List
Lists all error codes, their display methods, possible causes, and countermeasures for troubleshooting.
9.2 Troubleshooting for Main Malfunction
Provides diagnostic steps and solutions for major malfunctions affecting the unit's operation.
Parts and Procedures
10. Exploded View and Parts List
Presents an exploded view of the indoor unit with a detailed list of all its components and part numbers.
11. Removal Procedure
Details the steps for removing major components from the indoor and outdoor units.
11.1 Removal Procedure of Indoor Unit
Step-by-step guide for safely disassembling and removing components of the indoor unit.
Appendices
Appendix 3: Pipe Expanding Method
Explains the correct procedures for expanding refrigerant pipes to prevent leaks.

Table of Contents