Midea MEHSU-18CHD2 - 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-18CHD2 Specifications

General

Refrigerant	R410A
Power Supply	220-240V, 50Hz
Type	Split System
Cooling Capacity	18000 BTU
Heating Capacity	18000 BTU

Summary

1. Precaution

1.1 Safety Precaution

General safety guidelines for user and property protection.

1.2 Warning

Critical warnings for installation, operation, and potential hazards.

6. Wiring Diagram

6.1 Indoor Unit

6.2 Outdoor Unit

7. Fan Curves

8 Electric Characteristics

11 The Specification of Power

12 Installation Details

12.1 Location selection

Guidelines for selecting optimal indoor and outdoor unit locations.

12.2 Indoor unit installation

Detailed procedures for installing various types of indoor units.

12.3 Outdoor unit installation

Procedures for installing the outdoor unit, including bolt pitch and mounting.

12.4 Refrigerant pipe installation

Instructions for installing refrigerant pipes, including length, diameter, and flaring.

12.5 Drainage pipe installation

Guidelines for installing drainage pipes to prevent leaks and condensation.

12.6 Vacuum Drying and Leakage Checking

12.7 Additional refrigerant charge

12.8 Engineering of insulation

12.9 Engineering of electrical wiring

12.10 Test operation

13. Operation Characteristics

16. Troubleshooting

16.1 Indoor Unit Error Display

Lists error codes displayed on the indoor unit and their meanings.

16.2 Outdoor unit error display

Lists error codes displayed on the outdoor unit and their meanings.

16.3 Diagnosis and Solution

Provides guidance for diagnosing and resolving common issues with the unit.

16.4 Main parts check

17. Disassembly Instructions

17.1 Indoor unit

17.2 Outdoor unit

5. Refrigerant Cycle Diagram