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Air-Con 24000 BTU - User Manual

Air-Con 24000 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. Product Summary

Indoor Unit Overview

Visual overview of different indoor unit models.

Outdoor Unit Overview

Visual overview of different outdoor unit capacities.

2. Model Identification

Model Number Structure Explained

Detailed breakdown of the air conditioner model number coding system.

3. Installation Guidance

Safety Precautions for Installation

Critical safety instructions to prevent injury and property damage during installation.

Installation Warnings and Cautions

Key warnings and cautions regarding electrical safety and installation hazards.

Operational Best Practices

Guidelines for safe and effective operation of the air conditioner.

Installation Details

Specific details and requirements for installing the air conditioner unit.

Wrench Torque Specifications

Torque values for installation connections based on pipe diameter for secure fitting.

Installation Connections

Power Cord Selection Guide

Guide to selecting the correct power cord gauge based on unit capacity requirements.

Pipe Length and Elevation Limits

Specifications for maximum allowable pipe length and elevation difference for optimal performance.

5. Refrigerant Cycle

Cooling Cycle Diagram

Illustrates the refrigerant path during cooling mode operation.

Heat Pump Cycle Diagram

Illustrates the refrigerant path during heat pump (heating) mode operation.

7. Wiring Diagrams

Indoor Unit Wiring Schematics

Circuit diagrams detailing indoor unit electrical components and connections.

Outdoor Unit Wiring Schematics

Circuit diagrams detailing outdoor unit electrical components and connections.

8. PCB Schematics

38-Section Crystal Color Schematic

Schematic for the 38-section crystal color ordinary PCB.

65 Mitsubishi Main Chip Schematic

Schematic for the 65 Mitsubishi main chip control board.

85-Section Schematics

Schematic diagrams for various 85-section model control boards.

18 NV 85 Compatible Schematics

Schematics for compatible electrically controlled 18NV 85 models.

Mitsubishi Jin Dynasty 85 Schematics

Schematics for the Mitsubishi Jin Dynasty 85 model control board.

9. PCB Functionality

Display Panel Types

Describes different types of display panels and their LED indicators.

Display Panel Operation

Details the functions of LEDs and displays on various panel types.

Cooling Mode

Cooling Operation Logic

Explains control logic for compressor and fans based on temperatures during cooling.

Heating Mode Operation Logic

Defrost Functionality

Intelligent Defrost Process

Describes the automatic defrosting process based on sensor readings.

Outdoor PCB Defrost Control

Details defrost management by the outdoor PCB based on specific conditions.

Defrost Conditions by Sensor

Conditions for starting and ending defrost based on outdoor sensor data.

Operating Modes

Dehumidification Mode Operation

Explains the dehumidification process and its operational cycle.

Ventilation Mode Operation

Describes the operation of the unit in ventilation mode.

Automatic Mode Operation

Details conditions for entering and operating in automatic mode.

Unit Features

Timer, Sleep, and Emergency Functions

Explains timer, sleep, and emergency key functions for user control.

Failure Display Codes

Details the failure code system and how to interpret LED indications.

Failure Codes E2-E4

Sensor and Unit Faults

Explains fault codes E2, E3, E4 for sensor errors and unit abnormalities.

Failure Codes E5-E7

Motor and Feedback Faults

Explains fault codes E5, E6, E7 for motor issues and feedback faults.

Failure Code E8

Frost and Overheat Protection

Explains fault code E8 for frost protection or overheating issues.

10. Troubleshooting Guide

Indoor Sensor Error Diagnosis

Steps to diagnose and resolve errors related to indoor temperature sensors.

Indoor Fan Motor Malfunction

Troubleshooting guide for issues where the indoor fan motor fails to operate.

Compressor Malfunction Diagnosis

Troubleshooting guide for issues where the compressor fails to start or operate.

Remote System Troubleshooting

Environmental Interference Issues

Addresses interference from sunlight and thyristor lights on the receiver.

Remote Control Operation Problems

Troubleshooting steps for remote control failures, battery issues, and transmission problems.

General Unit Troubleshooting

Power and Basic Operation Checks

Verifies power supply, unit display, and basic operational status.

Component and PCB Functionality Checks

Checks for proper operation of key components and the control PCB.

Unit Does Not Operate

Power Supply and Wiring Integrity

Verifies power supply, wiring, and insulation for overall unit startup.

Component and PCB Voltage Checks

Checks fuses, transformer output, and PCB voltages for unit startup.

Air-Con 24000 BTU Specifications

General IconGeneral
BrandAir-Con
Model24000 BTU
CategoryAir Conditioner
LanguageEnglish

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