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SERVICE
MANUAL
MODELS:
TM18HX4O
TM24HX4O
TM30HX4O
TM36HX4O
TM42HX4O

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Table of Contents
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Summarization of Contents

Appendix
Appendix 1: Reference Sheet of Celsius and Fahrenheit
Conversion table for temperature units.
Appendix 2: Pipe Expanding Method
Guide on correctly expanding refrigerant pipes to prevent leaks.
Appendix 3: List of Resistance for Temperature Sensor
Resistance values for temperature sensors at different temperatures.
2. Specifications
TM18HX40 Specifications
Detailed technical specifications for the TM18HX40 model.
TM24HX40 Specifications
Detailed technical specifications for the TM24HX40 model.
TM30HX40 Specifications
Detailed technical specifications for the TM30HX40 model.
TM36HX40 Specifications
Detailed technical specifications for the TM36HX40 model.
TM42HX40 Specifications
Detailed technical specifications for the TM42HX40 model.
5. Electrical Part
5.1 Wiring Diagram
Illustrates electrical connections and wiring for all models.
5.2 PCB Printed Diagram
Shows the layout and components of the Printed Circuit Board.
6. Function and Control
1. Basic Functions of the System
Covers Cooling, Dry, Heating, and Fan modes, detailing their conditions and processes.
2. Protection Functions
Details various protection mechanisms including mode conflict, overload, discharge, and IPM protection.
7. Notes for Installation and Maintenance
General Safety Precautions
Important warnings and safety guidelines for installation and maintenance.
Electrical Safety Precautions
Specific safety measures related to electrical connections and power.
Installation Safety Precautions
Guidelines for safe and proper unit installation.
Refrigerant Safety Precautions
Precautions for handling refrigerant during installation and maintenance.
8. Installation
Installation Procedures
Step-by-step guide for installing the air conditioner unit.
8.1 Electrical Connections
Details on connecting electrical wiring for different models.
8.2 Installing the Outdoor Unit
Instructions for mounting and securing the outdoor unit.
8.3 Bleeding
Procedure for removing air and humidity from the refrigerant circuit.
8.4 Maintenance
General maintenance guidelines and precautions.
8.5 Installation Dimension Diagram
Visual guide showing required clearances for installation.
8.6 Check after Installation
Checklist for verifying proper installation before operation.
9. Maintenance
9.1 Precautions before Performing Inspection or Repair
Safety measures before starting maintenance tasks.
9.2 Flashing LED of Indoor/Outdoor Unit and Primary Judgement
Interpreting LED indicators for initial malfunction diagnosis.
9.3 Malfunction Checking and Elimination
Troubleshooting steps for various system malfunctions.
11. Removal Procedure
Disassembly Steps
Details the step-by-step process for disassembling the outdoor unit components.

Table of Contents