MDV CTBU-24HWFN1-MC - User Manual

Revision D: 1705, 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);
MTI-18HWFN1-MT0W; MTIU-24HWFN1-MW; MTIU-36HWFN1-MW;
MTIU-48HWFN1-MW; MHG-60HWFN1-MW; MUE-60HRFN1-MW
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
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.

Summary

Precautions and Warnings

Safety Precautions

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

General Warnings

Critical warnings for installation, operation, and handling of the unit.

Refrigerant System Diagrams

Refrigerant Cycle Diagrams

Wiring and Electrical Diagrams

Indoor Unit Wiring Diagrams

Shows detailed wiring diagrams for various indoor unit models.

Outdoor Unit Wiring Diagrams

Provides wiring diagrams for various outdoor unit models.

Field Wiring Instructions

Field Wiring Diagrams

Provides diagrams for field wiring connections for specific unit capacities.

Detailed Installation Procedures

Location Selection Guidelines

Indoor Unit Installation Steps

Step-by-step instructions for installing various indoor unit types.

Outdoor Unit Installation Steps

Step-by-step instructions for installing outdoor units.

Refrigerant Pipe Installation Guide

Details steps for connecting refrigerant pipes, including length and height limits.

Drainage Pipe Installation Guide

Vacuum Drying and Leakage Checking

Procedures for vacuum drying and checking for system leaks.

Electrical Wiring Installation Guidelines

Provides guidelines for safe and compliant electrical wiring installation.

Post-Installation Test Operations

Details the procedure for performing post-installation operational tests.

Troubleshooting Guide

Troubleshooting Safety Precautions

Indoor Unit Error Display Codes

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

Outdoor Unit Error Display Codes

Displays error codes for outdoor units with LED status.

Diagnosis and Solution for Common Errors

Troubleshooting steps for various error codes like EEPROM, communication, and sensor faults.

Component Checking Procedures

Temperature Sensor Resistance Check

Compressor Winding Resistance Check

IPM Continuity Check

Disassembly and Reassembly Instructions

Indoor Unit Disassembly Procedures

A6 Duct Unit Disassembly Procedures

Outdoor Unit Disassembly: MOB01 Models

Outdoor Unit Disassembly: MOCA Models

Outdoor Unit Disassembly: MOD Models

Outdoor Unit Disassembly: MOE Models

Outdoor Unit Disassembly: MOB30 Models

MDV CTBU-24HWFN1-MC Specifications

General

Refrigerant	R410A
Energy Efficiency Ratio (EER)	3.21
Coefficient of Performance (COP)	3.61
Indoor Unit Dimensions (HxWxD)	315 x 970 x 235 mm
Operating Temperature (Heating)	-7-24°C
Type	Split
Cooling Capacity	24000 BTU/h