Midea MI2-140Q4DHN1 User Manual

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.

Midea MI2-140Q4DHN1 Specifications

General

Refrigerant	R410A
Cooling Capacity	14.0 kW
Heating Capacity	16.0 kW
Operating Temperature (Cooling)	18°C to 43°C
Operating Temperature (Heating)	-7°C to 24°C

Summary

Installation Manual

Safety Precautions

Essential safety guidelines to prevent injury and unit damage during installation.

Indoor Unit Installation

Installation sequence for existing ceiling

Steps for installing the indoor unit into an existing ceiling structure.

Installation sequence for new ceiling

Steps for installing the indoor unit into a new ceiling structure.

Panel Installation

Steps for installing the front panel and related components of the indoor unit.

Panel installation

Refrigerant Piping Installation

Piping Installation

Air Tightness Test

Water Discharge Piping Installation

Water Discharge Piping Installation for Indoor Unit

Water Discharge Test

Electrical Wiring

Power Cord Connection

Electrical Wiring Specifications

Communication Wiring

Communication wiring between the indoor and outdoor units

Communication wiring between the indoor unit and wired controller

On-site Configuration

Capacity Settings

Address Settings

DIP Switch Settings on Main Board

Test Run

Things to Note Before Test Run

Important checks and preparations required before performing the unit's test run.

Test Run

Step-by-step guide for conducting the initial operational test of the air conditioner.

The Explain Of The Display Panel

Air Conditioner Operations and Performance

Maintenance

Troubleshooting

General

Overview of initial troubleshooting steps and when to contact a technician.

Unit troubleshooting

Common unit symptoms and their potential causes and solutions.

Remote controller troubleshooting

Solutions for issues related to the remote controller's functionality.

Error codes

Definitions of error codes displayed on the unit and their possible causes.