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Midea MCA3U-12HRFN1-M(C)

Midea MCA3U-12HRFN1-M(C)
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Revision O: 2103, Content updated.
Model Numbers:
Indoor Unit:
MCA3U-09HRFN1-M(C); MCA3U-12HRFN1-M(C); MCA3U-18HRFN1-M(C);
MFAU-12HRFN1-M(C); MCD-24HRFN1-M(C); MCD-36HRFN1-M(C);
MCD-48HRFN1-M(D); MUEU-18HRFN1-M(C); MUEU-24HRFN1-M(C); MUE-36HRFN1-M(C);
MUE-48HRFN1-M(C); MUE-60HRFN1-MW; MTIU-09HWFN1-M, MTIU-12HWFN1-M;
MTIU-18HWFN1-M; MTIU-24HWFN1-M; MTI-36HWFN1-M; MTI-48HWFN1-M;
MHG-60HWFN1-MW; MCD1-24HRFN1-MT0W(GA)
Outdoor Unit:
MOB30-09HFN1-MX0W; MOB01-09HFN1-MW0W; MOB30-12HFN1-MV0W;
MOB01-12HFN1-MV0W; MOCA30-18HFN1-MT0W; MOCA01-18HFN1-MT0W;
MOD30-24HFN1-MT0W; MOD01-23HFN1-MT0W; MOBA30-09HFN1-MT0W;
MOB30-12HFN1-MT0W; MOCA31-18HFN1-MT0W; MOD31-24HFN1-MT0W;
MOD30U-36HFN1-M; MOE30U-48HFN1-M; MOE30U-60HFN1-M; MOE30U-36HFN1-M-[X]
MOE30U-48HFN1-M-[X]; MOD30U-36HFN1-MP0; MOE30U-48HFN1-MP0
MOX230-09HFN1-MW5W; MOX330-09HFN1-MY5W; MOX230-12HFN1-MV5W;
MOX330-12HFN1-MW5W, MOX430-17HFN1-MT0W, MOD30-24HFN1-MU0W,
MOD33-24HFN1-MT0W
Light commercial MONO 3D Air
Conditioner
SERVICE MANUAL Mono DC
Table of Contents
1. Precaution
2. Part Names And Functions
3. Dimension
4. Service space
5. Refrigerant Cycle Diagram
6. Wiring Diagram
7. Fan Curves
8. Air Velocity Distributions
9. Electric Characteristics
10. Sound Level
11. Accessories
12. The Specification of Power
13. Field Wiring
14. Installation Details
15. Operation Characteristics
16. Electronic Function
17. Troubleshooting
18. Disassembly Instructions
WARNING
Installation MUST conform with local building codes or, in the absence of local codes, with the
National Electrical Code NFPA70/ANSI C1-1993 or current edition and Canadian Electrical
Code Part1 CSA C.22.1.
The information contained in the manual is intended for use by a qualified service technician
familiar with safety procedures and equipped with the proper tools and test instruments
Installation or repairs made by unqualified persons can result in hazards to you and others.
Failure to carefully read and follow all instructions in this manual can result in equipment
malfunction, property damage, personal injury and/or death.
This service is only for service engineer to use.

Table of Contents

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Midea MCA3U-12HRFN1-M(C) Specifications

General IconGeneral
BrandMidea
ModelMCA3U-12HRFN1-M(C)
CategoryAir Conditioner
LanguageEnglish

Summary

Precaution

Safety Precaution

General safety instructions to prevent injury and property damage during installation and operation.

Warning

Critical warnings related to installation, operation, and product handling to avoid hazards.

Part Names and Features

Service Space

Refrigerant Cycle Diagram

Wiring Diagram

Electric Characteristics

Sound Level

Field Wiring

Installation Details

Vacuum Drying and Leakage Checking

Procedures for vacuum drying the system and checking for leaks.

Additional refrigerant charge

Instructions for calculating and adding refrigerant charge.

Test operation

Steps for performing post-installation system testing and checks.

Operation Characteristics

Electronic Function

Main Protection

Describes built-in protection mechanisms for unit safety and longevity.

Troubleshooting

Indoor Unit Error Display

Lists error codes and their meanings for indoor unit malfunctions.

Error Display on Two Way Communication Wired Controller

Lists error codes and meanings for wired controller communication issues.

Diagnosis and Solution

Provides step-by-step troubleshooting guides for specific error codes.

Disassembly Instructions

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