Midea MOE30U-48HFN1-M 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 MOE30U-48HFN1-M Specifications

General

Brand	Midea
Model	MOE30U-48HFN1-M
Category	Air Conditioner
Language	English

Summary

Precaution

Safety Precaution

Warning

Refrigerant Cycle Diagram

Wiring Diagram

Indoor Unit Wiring Diagrams

Outdoor Unit Wiring Diagrams

Electric Characteristics

The Specification of Power

Field Wiring

Installation Details

Location Selection

Indoor Unit Installation

Outdoor Unit Installation

Refrigerant pipe installation

Maximum pipe length and height drop

Procedure of connecting pipes

First-Time Installation Steps

Drainage pipe installation

Installation Principles and Key Points

Vacuum Drying and Leakage Checking

Purpose and Selection of Vacuum Pump

Vacuum Drying Operation Procedures

Engineering of electrical wiring

Highlights of Electrical Wiring Installation

Test operation

Indoor Unit Test Points

Outdoor Unit Test Points

Error code of engineer mode

Troubleshooting

Indoor Unit Error Display

Provides a table mapping operation lamp and timer lamp flash counts to specific indoor unit error codes.

Two Way Communication Wired Controller Error Display

Lists error codes displayed on the wired controller for communication issues and unit malfunctions.

EEPROM Parameter Error (E0/F4) Diagnosis and Solution

Guides on diagnosing and resolving EEPROM parameter errors, including PCB checks.

Communication Malfunction (E1) Diagnosis and Solution

Provides troubleshooting steps for communication errors between indoor and outdoor units, focusing on wiring and PCB checks.

Fan Speed Malfunction (E3) Diagnosis and Solution

Offers a diagnostic flowchart for indoor fan speed malfunctions, covering wiring, motor, and PCB issues.

Fan Speed Malfunction (F5) Diagnosis and Solution

Outlines troubleshooting steps for outdoor fan speed issues, including wiring, assembly, motor, and PCB checks.

Temperature Sensor Error (E4/E5/F1/F2/F3) Diagnosis and Solution

Guides on diagnosing and resolving temperature sensor open or short circuit errors, including voltage and resistance checks.

Refrigerant Leakage Detection (EC) Diagnosis and Solution

Details the procedure for detecting refrigerant leaks and troubleshooting related system issues.

Water-level Alarm Malfunction (EE) Diagnosis and Solution

Provides steps for troubleshooting water-level alarm issues, checking the switch, pump, and PCB.

IPM Malfunction/Over-current Protection (P0) Diagnosis and Solution

Offers troubleshooting for IPM malfunctions and over-current protection, including wiring and component checks.

Over-voltage/Under-voltage Protection (P1) Diagnosis and Solution

Guides on diagnosing and resolving over-voltage or under-voltage protection issues, covering power supply and reactor checks.

High Temperature Protection (P2) Diagnosis and Solution

Outlines troubleshooting for compressor top and IPM board high temperature protection, including airflow and thermal grease checks.

Inverter Compressor Drive Error (P4) Diagnosis and Solution

Provides steps to diagnose inverter compressor drive errors, checking wiring, IPM, fan, and compressor.

Outdoor IPM Module Temp Sensor Malfunction (P7) Diagnosis and Solution

Details troubleshooting for outdoor IPM module temperature sensor issues, including connection and resistance checks.

J0 Malfunction

Guides on diagnosing and resolving J0 malfunction related to evaporator high temperature protection.

J1 Malfunction

Outlines troubleshooting for J1 malfunction related to condenser high temperature protection.

J2 Malfunction

Details troubleshooting for J2 malfunction, typically related to compressor discharge temperature protection.

J3 Malfunction

Provides steps for diagnosing J3 malfunction, often related to PFC module protection issues.

J4 Malfunction

Guides on troubleshooting J4 malfunction, usually indicating communication errors between chips.

P6/J5 Malfunction

Addresses P6/J5 malfunction related to high outdoor pressure switch activation.

J6/P6 Malfunction

Outlines troubleshooting for low outdoor pressure switch activation causing system cutoff.

J8 Malfunction

Communication Malfunction (F7) Diagnosis and Solution

Auto-lifting Panel Malfunction (F8) Diagnosis and Solution

Current Overload Protection (F0) Diagnosis and Solution

Communication Malfunction (FA) Diagnosis and Solution

Disassembly Instructions

Indoor Unit Disassembly

Outdoor Unit Disassembly