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Midea M3OE-21HFN1-Q User Manual

Midea M3OE-21HFN1-Q
57 pages
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SERVICE MANUAL
MIDEA AIRCONDITIONER
SUPER DC INVERTER MULTI TYPE
OUTDOOR UNITS
M2OE-14HFN1-Q
M2OF-18HFN1-Q
M3OE-21HFN1-Q
M3OE-27HFN1-Q
M4OE-28HFN1-Q
M4OB-36HFN1-Q
M5OE-42HFN1-Q
DM16-01.01.11-01en
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Midea M3OE-21HFN1-Q Specifications

General IconGeneral
BrandMidea
ModelM3OE-21HFN1-Q
CategoryAir Conditioner
LanguageEnglish

Summary

GENERAL INFORMATION OF OUTDOOR UNITS

FEATURES

SPECIFICATION

DIMENSIONS

REFRIGERATION CYCLE DIAGRAM

WIRING DIAGRAM

INDOOR UNITS COMBINATION

SOUND LEVELS

INSTALLATION DETAILS

9.1 Wrench torque sheet for installation

Specifies torque values for connecting refrigerant pipes of different diameters.

9.2 Connecting the cables

Guidelines for selecting power cord cross-sectional area based on appliance current.

9.3 Pipe length and the elevation

Details maximum piping lengths and height differences for various system configurations.

ELECTRONIC CONTROL FUNCTION

10.1 Abbreviation

Defines abbreviations used for temperature sensors and other parameters.

10.2 Electric control working environment.

Specifies input voltage, frequency, and operating current limits for the unit.

10.3 Outdoor unit's digital display tube

Explains the functions and displays of the digital display tube on the outdoor PCB.

10.4 Outdoor unit point check function

Describes how to use the check switch for diagnosing unit status and errors.

TROUBLESHOOTING

11.1 Indoor unit error code explanation:

Lists error codes and malfunctions for indoor units and their corresponding displays.

11.2 Outdoor unit error code explanation:

Lists error codes and malfunctions for outdoor units and their corresponding LED status.

11.3 Trouble shooting

Provides diagnostic flowcharts for various unit malfunctions and troubleshooting steps.

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