Midea CTBU-09HWFN1-M

Revision C: 1607, Content updated.
Model Numbers:
Indoor Unit:
CTBU-09HWFN1-M(C); CCA3U-09HRFN1-M(C); CFAU-09HRFN1-M(C)
CTBU-12HWFN1-M(C); CCA3U-12HRFN1-M(C); CFAU-12HRFN1-M(C)
CTBU-18HWFN1-M(C); CCA3U-18HRFN1-M(C); MUEU-18HRFN1-M(C)
CTBU-24HWFN1-M(C); MCD-24HRFN1-M(C); MUEU-24HRFN1-M(C);
CTB-36HWFN1-M(C); MCD-36HRFN1-M(C); MUE-36HRFN1-M(C);
CTB-48HWFN1-M(C); MCD-48HRFN1-M(D); MUE-48HRFN1-M(C);
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;
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. Static Pressure
8. Electric Characteristics
9. Sound Level
10. Accessories
11. The Specification of Power
12. Installation Details
13. Operation Characteristics
14. Electronic Function
15. Solar Panel
16. Troubleshooting
17. 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 CTBU-09HWFN1-M Specifications

General

Brand	Midea
Model	CTBU-09HWFN1-M
Category	Air Conditioner
Language	English

Summary

Precaution

Safety Precaution

Instructions to prevent injury to users and property damage during operation and installation.

Warning

Critical warnings regarding electrical shock, fire hazards, and improper installation or operation.

Part Names and Features

Model Names of IndoorOutdoor units

Lists the various model names for indoor and outdoor units based on series and capacity.

Part Names of IndoorOutdoor Units

Identifies and labels the various components of the indoor and outdoor units with diagrams.

Unit Features

Details specific features of different unit types like Duct, Cassette, Console, and Ceiling-floor units.

Dimension

Indoor Unit Dimensions

Provides detailed dimensions for various indoor unit types like Duct, Cassette, Console, and Ceiling-floor units.

Outdoor Unit Dimensions

Provides detailed dimensions for various outdoor unit models.

Service Space

Indoor Unit Service Space

Specifies the required clearance around indoor units for installation and maintenance.

Outdoor Unit Service Space

Specifies the required clearance around outdoor units for proper airflow and maintenance.

Refrigerant Cycle Diagram

Wiring Diagram

Indoor Unit Wiring Diagrams

Illustrates the electrical wiring configurations for various indoor unit models.

Outdoor Unit Wiring Diagrams

Illustrates the electrical wiring configurations for various outdoor unit models.

Fan Curves

Electric Characteristics

Sound Level

Indoor Unit Sound Levels

Presents noise level data (dB(A)) for indoor units across different models and fan speeds.

Outdoor Unit Sound Levels

Presents noise level data (dB(A)) for outdoor units across different models.

Accessories

Power Specifications

Field Wiring

Installation Details

Location Selection

Guidance on selecting appropriate locations for indoor and outdoor unit installation.

Indoor Unit Installation

Detailed procedures for installing various types of indoor units.

Outdoor Unit Installation

Procedures and considerations for installing the outdoor unit.

Refrigerant Pipe Installation

Instructions for installing refrigerant pipes, including length, height, and connection procedures.

Drainage Pipe Installation

Guidance on installing drainage pipes to prevent leaks and ensure proper water flow.

Vacuum Drying and Leakage Checking

Procedures for vacuum drying the system and checking for refrigerant leaks.

Additional Refrigerant Charge

Instructions for calculating and adding refrigerant based on pipe dimensions.

Refrigerant Pipe Insulation Engineering

Guidelines for insulating refrigerant pipes to maintain performance and prevent condensation.

Electrical Wiring Engineering

Guidelines for proper field wiring installation, grounding, and wire selection.

Test Operation

Procedures and checks required before and during the initial test operation.

Electronic Function

Abbreviations

List of abbreviations used for temperature sensors and other technical terms.

Display Functions

Explains icons and codes displayed on the indoor unit display for various functions and errors.

Main Protections

Details on compressor and fan protection mechanisms like delay, temperature, and speed faults.

Operation Modes and Functions

Describes various operating modes such as Fan, Cooling, Heating, Auto, Drying, Timer, and Sleep functions.

Troubleshooting

Indoor Unit Error Display

Lists error codes displayed on the indoor unit, their meanings, and corresponding LED status.

Outdoor Unit Error Display

Lists error codes for outdoor units and their corresponding LED indicators and IU display codes.

Diagnosis and Solution

Provides step-by-step diagnostic procedures and solutions for common error codes like E0/F4 and E1.

Main Parts Check

Guides on checking components like temperature sensors and their resistance values.

Disassembly Instructions

Indoor Unit Disassembly

Step-by-step instructions for disassembling indoor units: Duct, Cassette, and Console types.

Outdoor Unit Disassembly

Step-by-step instructions for disassembling outdoor units for various model series.