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Midea MI2-45Q4DHN1 User Manual

Midea MI2-45Q4DHN1
25 pages
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Four-way Cassette
The 2nd generation DC VRF indoor unit
Installation and Operation Manual
Original instructions
Thank you very much for purchasing our air conditioner.
Before using your air conditioner, please read this manual carefully and keep it for future reference.
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Midea MI2-45Q4DHN1 Specifications

General IconGeneral
BrandMidea
ModelMI2-45Q4DHN1
CategoryAir Conditioner
LanguageEnglish

Summary

Safety Precautions

Accessories

Accessories to purchase locally

Details items that are not included with the unit and must be purchased separately.

Before Installation

Choosing an Installation Site

Guidelines for selecting the optimal location for the indoor unit.

Indoor Unit Installation

Procedures for mounting the indoor unit and connecting it.

Refrigerant Piping Installation

Piping Installation Procedures

Covers length, size, layout, and general installation steps for refrigerant pipes.

Air Tightness Test

Procedure to check for leaks in the refrigerant system.

Heat Insulation Treatment

Instructions for insulating refrigerant pipes to prevent condensation.

Vacuum and Refrigerant Charging

Steps for creating vacuum and charging the system with refrigerant.

Water Discharge Piping Installation

Indoor Unit Water Discharge Piping Installation

Steps for installing the PVC pipes for draining condensate from the indoor unit.

Water Discharge Test

Procedure to verify proper drainage operation after installation.

Electrical Wiring

Power Cord Connection

Instructions for connecting the power supply to the indoor unit.

Electrical Wiring Specifications

Details on wire sizing, breakers, and voltage requirements.

Communication Wiring

How to wire communication cables between units and controllers.

Electrical Wiring Connection Points Handling

Proper methods for securing and protecting wiring connections.

On-site Configuration

Capacity Settings

Setting the unit's capacity using DIP switches.

Address Settings

Assigning unique addresses to indoor units in a system.

DIP Switch Settings on Main Board

Configuration options for various unit functions via DIP switches.

Test Run

Pre-Test Run Checks

Essential pre-checks required before starting the unit for testing.

Performing the Test Run

How to conduct the initial operational check of the unit.

Part Names

Display Panel Explanation

Air Conditioner Operations and Performance

Adjusting Air Flow Direction

Maintenance

Symptoms That Are Not Faults

Unit Startup Behavior

Describes normal delays in unit startup and related indicators.

Mist and Odor Emission

Explains mist generation and odor emission under certain conditions.

Dust Emission After Idle Period

Describes dust emission after periods of non-use.

Troubleshooting

General Troubleshooting

Initial steps for diagnosing and resolving common issues.

Unit Troubleshooting

Specific troubleshooting steps for unit operational problems.

Remote Controller Troubleshooting

Steps to resolve issues with the remote control operation.

Error Code Definitions

Lists and explains error codes displayed by the unit.

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