Midea MEHSU-12CHD2 - User Manual

CONTENTS
1. Precaution ..................................................................................................................................................... 1
1.1 Safety Precaution .......................................................................................................................... 1
1.2 Warning .......................................................................................................................................... 1
2. Part Names and Features ............................................................................................................................ 4
2.1 Model Names of Indoor/Outdoor units .......................................................................................... 4
2.2 Part names of Indoor/Outdoor units .............................................................................................. 5
2.3 Features ......................................................................................................................................... 9
3. Dimension ................................................................................................................................................... 18
3.1 Indoor Unit ................................................................................................................................... 18
3.2 Outdoor Unit ................................................................................................................................ 23
4. Service Space ............................................................................................................................................. 25
4.1 Indoor Unit ................................................................................................................................... 25
4.2 Outdoor Unit ................................................................................................................................ 27
5. Refrigerant Cycle Diagram ........................................................................................................................ 28
6. Wiring Diagram ........................................................................................................................................... 29
6.1 Indoor Unit ................................................................................................................................... 29
6.2 Outdoor Unit ................................................................................................................................ 34
7. Fan Curves .................................................................................................................................................. 41
8 Electric Characteristics .............................................................................................................................. 48
9 Sound Level ................................................................................................................................................. 49
9.1 Indoor unit .................................................................................................................................... 49
9.2 Outdoor unit ................................................................................................................................. 52
10 Accessories ............................................................................................................................................... 53
11 The Specification of Power ...................................................................................................................... 55
12 Installation Details .................................................................................................................................... 57
12.1 Location selection ................................................................................................................... 57
12.2 Indoor unit installation ............................................................................................................. 57
12.3 Outdoor unit installation .......................................................................................................... 64
12.4 Refrigerant pipe installation .................................................................................................... 65
12.5 Drainage pipe installation ....................................................................................................... 69
12.6 Vacuum Drying and Leakage Checking ................................................................................. 72
12.7 Additional refrigerant charge .................................................................................................. 73
12.8 Engineering of insulation ........................................................................................................ 74
12.9 Engineering of electrical wiring ............................................................................................... 75
12.10 Test operation ...................................................................................................................... 75
13. Operation Characteristics ....................................................................................................................... 77
14. Electronic Function .................................................................................................................................. 78
14.1 Abbreviation ............................................................................................................................... 78

Midea MEHSU-12CHD2 Specifications

General

Brand	Midea
Model	MEHSU-12CHD2
Category	Air Conditioner
Language	English

Summary

1. Precaution

1.1 Safety Precaution

Instructions to prevent injury and property damage.

1.2 Warning

Critical warnings for operation and installation.

6. Wiring Diagram

6.1 Indoor Unit

6.2 Outdoor Unit

11. The Specification of Power

Power Specifications for 9 K-24 K Units

Power Specifications for 36 K-48 K Units

12. Field Wiring

Wiring Diagrams for Air Condition Link-Circuit

13. Installation Details

Location Selection Guidelines

Guidelines for choosing optimal indoor and outdoor unit installation locations.

Duct Unit Installation Procedures

Compact Cassette Unit Installation Procedures

Console Unit Installation Procedures

Ceiling-floor Unit Installation Procedures

Outdoor Unit Installation Procedures

Guidelines and steps for installing the outdoor unit.

Refrigerant Pipe Installation

Covers pipe connection, first-time installation, and procedures.

Drainage Pipe Installation

Details on installing drainage pipes, including principles, key points, and testing.

Vacuum Drying and Leakage Checking

Procedures for system evacuation and leak testing.

Additional Refrigerant Charge

Process for adding refrigerant after installation or repairs.

Engineering of Insulation

Engineering of Electrical Wiring

Test Operation

Steps and checks before and during system operation testing.

16. Troubleshooting

16.1 Indoor Unit Error Display

Lists error codes and displays for indoor units.

16.2 Outdoor Unit Error Display

Lists error codes and displays for outdoor units.

16.3 Diagnosis and Solution

Provides troubleshooting steps and solutions for common issues.

16.4 Main Parts Check

17. Disassembly Instructions