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Midea MS9A-12HRDN1-QC2 User Manual

Midea MS9A-12HRDN1-QC2
40 pages
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SERVICE MANUAL
MIDEA AIRCONDITIONER
DC INVERTER
SPLIT WALL-MOUNTED TYPE
MS9A-09HRDN1-QC2
MS9A-12HRDN1-QC2
V1.0
Oct, 2009
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Midea MS9A-12HRDN1-QC2 Specifications

General IconGeneral
BrandMidea
ModelMS9A-12HRDN1-QC2
CategoryAir Conditioner
LanguageEnglish

Summary

Precautionary Measures

1.2 Warning

Critical warnings for installation and operation to prevent fire, shock, or injury.

CAUTION

Important cautions for installation and operation to ensure safety and proper function.

Technical Specifications

Wiring Diagrams

6.1 Indoor Unit Wiring

Electrical schematic for the indoor unit's wiring connections.

6.2 Outdoor Unit Wiring

Electrical schematic for the outdoor unit's wiring connections.

Installation Procedures

7.1 Wrench Torque for Installation

Specified torque values for fasteners during the installation process.

7.4 Air Purging Procedure

Steps for removing air and moisture from refrigerant piping.

7.5 Pumping Down (Re-installation)

Procedure for recovering refrigerant during unit removal or re-installation.

7.6 Re-air Purging (Re-installation)

Steps for purging air and moisture after unit re-installation.

7.7 Balance Refrigerant

Procedure to balance refrigerant charge between valves.

7.8 Evacuation

Process to create a vacuum in the refrigerant system.

7.9 Gas Charging

Procedure for adding the correct amount of refrigerant.

Operation Characteristics

8.1 MS9A-09HRDN1-QC2 Characteristics

Performance data for cooling and heating for model MS9A-09HRDN1-QC2.

8.2 MS9A-12HRDN1-QC2 Characteristics

Performance data for cooling and heating for model MS9A-12HRDN1-QC2.

Electronic Functions

9.3 Protection Mechanisms

Details on unit protections and error conditions.

9.5 Cooling Mode Operation

Detailed explanation of cooling mode, including compressor control.

9.7 Heating Mode Operation

Explanation of heating mode, fan action, and anti-cold-wind.

9.7.6 Defrosting Mode Conditions

Conditions and process for the defrosting mode.

Troubleshooting Guide

10.1 Indoor Unit Error Display

Table listing error codes displayed on the indoor unit and their meanings.

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