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Air-Con 18000 BTU - User Manual

Air-Con 18000 BTU
39 pages
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1
Service manual
Room airconditioner
Split Wall-Mounted Type
NOTE:
Before servicing the unit, please read this first
Always contact with your service center if meet
problem.
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Summary

1. Air Conditioner Model Overview

1.1 Indoor Unit Models

Details the appearance and specifications of various indoor unit models.

1.2 Outdoor Unit Models

Outlines the outdoor unit models and their respective BTU capacities.

2. Model Identification System

3. Installation Safety and Warnings

3.1 Installation Safety Precautions

Lists essential safety instructions to prevent injury and damage during the installation process.

3.2 Installation Warning Notices

Highlights critical warnings regarding electrical hazards, grounding, and correct wiring practices.

3.3 Installation Details and Torque

Provides specific installation parameters, including recommended torque values for pipe connections.

4. Unit Diagrams and Parts Lists

5. Refrigerant Cycle Diagrams

5.1 Cooling Mode Cycle

Diagram showing the refrigerant path during the cooling operation of the unit.

5.2 Heat Pump Mode Cycle

Diagram illustrating the refrigerant flow for heat pump operation, including the reversing valve.

6. Technical Specifications

7. Wiring and Circuit Diagrams

7.1 Indoor Unit Wiring Schematics

Detailed circuit diagrams illustrating the electrical layout and connections of the indoor unit.

7.2 Outdoor Unit Wiring Schematics

Electrical schematics detailing the components and connections within the outdoor unit.

8. PCB Schematic Diagrams

8.1 38-Section Crystal Color Schematic

Schematic for the 38-section crystal color ordinary PCB, showing its electronic components.

8.2 65 Mitsubishi Main Chip Schematic

Schematic diagram for the 65 Mitsubishi model featuring the main control chip.

8.3 85-Section Schematic Diagrams

Schematic diagrams for the 85-section PCBs, illustrating their electronic configurations.

8.4 18 NV 85 Electrically Controlled Schematic

Detailed schematics for the 18NV 85 model, covering electrically controlled functions.

8.5 Mitsubishi Jin Dynasty 85 Motherboard Schematic

Schematic for the Mitsubishi Jin Dynasty 85 model's electrically controlled motherboard.

9. PCB Indicator and Display Functions

9.1 Two-LED Display Panel Function

Describes the function and status indication of the two-LED display panel.

9.2 Eleven-LED Display Panel Function

Explains the indicators for the eleven-LED display, including operational status.

9.3 2-LED & 8-LED Display Function

Details the functions of display panels featuring two LEDs and an 8-segment LED display.

9.4 LED Multi-Color Panel Function

Outlines the operational modes and indicators for the multi-color LED display panel.

Defrosting Modes and Control

1. Intelligent Defrost Procedure

Explains the system's method for detecting frost and initiating the defrost cycle.

2. Outdoor PCB Defrost Control

Outlines the specific conditions and timing managed by the outdoor PCB for defrosting.

3. Outdoor Sensor Defrost Triggers

Defines the sensor conditions that initiate and terminate the defrost cycle.

Troubleshooting: Failure Display Codes

10. Troubleshooting Common Issues

Indoor Temperature Sensor Errors

Procedures for identifying and rectifying faults related to indoor room and coil sensors.

Indoor Sensor Fault Diagnosis

Steps to troubleshoot indoor sensor issues, including resistance checks and PCB verification.

Air-Con 18000 BTU Specifications

General IconGeneral
BrandAir-Con
Model18000 BTU
CategoryAir Conditioner
LanguageEnglish

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