Midea MFAU-12HRFN1-M(C) User Manual

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.

Midea MFAU-12HRFN1-M(C) Specifications

General

Cooling Capacity	12000 BTU/h
Energy Efficiency Ratio (EER)	3.21
Power Supply	220-240V, 50Hz
Refrigerant	R410A
Operating Temperature (Cooling)	17-32°C
Net Weight (Indoor Unit)	9 kg
Type	Split Air Conditioner
EER (Cooling)	3.21
Noise Level (Indoor)	39/35/31 dB(A)
Heating Capacity	13000 BTU/h

Summary

1. Precaution

1.1 Safety Precaution

Instructions to prevent injury to users and property damage.

1.2 Warning

Critical warnings regarding installation, operation, and product handling.

4. Service Space

4.1 Indoor Unit Service Space

4.2 Outdoor Unit Service Space

6. Wiring Diagram

6.1 Indoor Unit Wiring Diagrams

6.2 Outdoor Unit Wiring Diagrams

12. Power Specifications

13. Field Wiring

14. Installation Details

14.1 Location Selection

14.2 Indoor Unit Installation

Step-by-step instructions for installing various types of indoor units.

14.3 Outdoor Unit Installation

Procedures for correctly installing the outdoor unit.

14.4 System Installation & Testing

Covers refrigerant pipes, drainage, insulation, wiring, and test operations.

16. Electronic Function

16.3 Main Protection

Details protection mechanisms like compressor delay and temperature limits.

17. Troubleshooting

17.1 Indoor Unit Error Display

Lists error codes and their meanings for indoor unit malfunctions.

17.2 Wired Controller Error Display

17.3 Outdoor Unit Error Display

17.4 Diagnosis and Solution

Provides detailed troubleshooting steps for common error codes.

18. Disassembly Instructions

18.1 Indoor Unit Disassembly

18.2 Outdoor Unit Disassembly