MDV CTBU-18HWFN1-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

General Safety Precautions and Warnings

Safety Precautions for Installation and Operation

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

Critical Installation and Operation Warnings

Critical warnings regarding installation, operation, and general product handling to prevent hazards.

Refrigerant Cycle Diagrams

MOCA;MOD Series Refrigerant Cycle

Illustrates the refrigerant flow for MOCA and MOD series units, showing key components and valves.

MOB;MOBA Series Refrigerant Cycle

Wiring Diagrams

Indoor Unit Wiring Diagrams

Wiring schematics for various indoor unit series (CCA3U, CTBU, CFAU, MCD, MUEU, MUE, MTI, MTIU).

Outdoor Unit Wiring Diagrams

Wiring diagrams for outdoor units across MOB, MOCA, MOD, and MOE series, detailing PCB connections.

Power Specifications

9 K-18 K; 24 K Power Specifications

36 K; 48 K;60 k Power Specifications

Installation Procedures and Guidelines

Location Selection Criteria

Indoor Unit Installation Procedures

Outdoor Unit Installation

Refrigerant Pipe Installation and First-Time Setup

Details refrigerant pipe installation, connection procedures, first-time setup, vacuuming, and refrigerant charging.

Drainage Pipe Installation and Testing

Vacuum Drying and Leakage Checking Procedures

Explains the purpose, methods, and procedures for vacuum drying and checking for system leaks.

Electronic Functions and Protections

Main Protection Mechanisms

Describes key protection features for compressor, fan, and system components against various faults.

Troubleshooting Guide

Troubleshooting Safety Precautions

Important safety notes regarding discharging electricity from capacitors before maintenance.

Indoor Unit Error Displays and Codes

Lists indoor unit error codes and their corresponding LED status indications for diagnosis.

Outdoor Unit Error Displays and Codes

Details outdoor unit error displays and codes (9K-24K, 36K-60K) for identifying malfunctions.

System Diagnosis and Solution Procedures

Provides step-by-step diagnosis and solution for common error codes (E0/F4, E1, E4/E5/F1/F2/F3, EC, EE, P0, P1, P2, P4, P7, J0, J1, J2, J3, J4, J5, J6, J8).

Main Parts Checking Procedures

Disassembly and Reassembly Procedures

MDV CTBU-18HWFN1-MC Specifications

General

Brand	MDV
Model	CTBU-18HWFN1-MC
Category	Air Conditioner
Language	English