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Midea MSMTAU-09HRFN8-QRD6GW User Manual

Midea MSMTAU-09HRFN8-QRD6GW
53 pages
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Ultimate Comfort 3D Inverter Series
Service Manual 2017
R32

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Midea MSMTAU-09HRFN8-QRD6GW Specifications

General IconGeneral
BrandMidea
ModelMSMTAU-09HRFN8-QRD6GW
CategoryAir Conditioner
LanguageEnglish

Summary

1. Precaution

1.1 Safety Precaution

Instructions to prevent injury to users and property damage, emphasizing reading the manual before service.

1.2 Warning

Warnings related to installation, electrical work, disassembly, grounding, and general usage precautions.

2 Information Servicing

Safety and Work Area Checks

Covers area checks, refrigerant presence, work procedures, and general safety.

Ignition Source and Ventilation Controls

Addresses fire extinguishers, ignition sources, and ventilation requirements for safe operation.

Equipment and Electrical Checks

Checks for electrical components, specifications, and adherence to manufacturer guidelines.

Electrical Device Checks and Sealed Component Repairs

Includes initial safety checks for electrical devices and procedures for repairing sealed components.

Intrinsically Safe Components and Cabling

Guidelines for working on intrinsically safe components and checking cabling integrity.

Flammable Refrigerant Detection Methods

Covers methods for detecting flammable refrigerants and leak detection techniques.

Refrigerant Removal and Charging Procedures

Details on refrigerant removal, evacuation, and charging procedures.

Decommissioning and Recovery

Procedures for safely decommissioning equipment and recovering refrigerants.

Unit Labelling and Refrigerant Recovery

Covers unit labelling requirements and best practices for refrigerant recovery.

3 Model List

Model Identification

Lists the model names for indoor and outdoor units based on capacity.

4 Dimension

4.1 Indoor Unit Dimensions

Provides dimensions (W, D, H) for the indoor units with a diagram.

4.2 Outdoor Unit Installation Clearances

Illustrates installation clearances and space requirements for the outdoor unit.

5 Refrigerant Cycle Diagram

6 Installation Details

6.1 Wrench Torque and 6.2 Cable Selection

Provides torque specifications for pipe connections and guidelines for cable selection.

6.3 Pipe Length and Elevation

Details pipe lengths, elevation limits, and refrigerant amounts for different models.

6.4 First-Time Installation Procedure

Step-by-step guide for initial installation, including leak testing and vacuum pump use.

6.5 Adding Refrigerant and 6.6 Re-installation

Procedures for adding refrigerant and re-installing indoor units after repair.

6.7 Re-installation After Outdoor Unit Repair

Procedure for evacuating the entire system before outdoor unit repair and re-installation.

7 Operation Characteristics

8 Wiring Diagram

8.1 Indoor Unit Wiring

Provides the wiring diagram for the indoor unit, including component connections.

8.2 Outdoor Unit Wiring

Provides the wiring diagram for the outdoor unit, showing component interconnections.

9 Electronic Functions

9.1 Abbreviations and 9.2 Display Functions

Lists abbreviations for sensors and explains indoor display board icons and digital display information.

9.3 Main Protection Features

Details various protection mechanisms like compressor delay, shutoff based on temperature/fan speed, and inverter protection.

9.4 Operation Modes and Functions Overview

Outlines different operational modes like Fan, Cooling, Heating, and Auto.

Detailed Operation Mode Descriptions

Covers Fan, Cooling, Heating, Condenser/Evaporator Protection, and Auto-mode operational details.

Advanced Operation Modes and Functions

Details forced operation, timer, sleep, auto-restart, and other advanced functions.

Energy Saving and Special Functions

Covers refrigerant leakage detection, 8°C heating, ECO, Self-Clean, Follow Me, Silence, Electrical consumption control, Boost, and Silky functions.

10 Troubleshooting

Safety Precautions for Troubleshooting

Warning about discharging electricity in capacitors before handling during troubleshooting.

10.1 Indoor Unit Error Display Codes

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

10.2 Troubleshooting Specific Errors

Provides diagnosis and solutions for specific error codes related to EEPROM, communication, fan speed, etc.

Main Parts Check

1. Temperature Sensor Checking

Procedure to measure the resistance value of various temperature sensors.

Appendix 1 Temperature Sensor Resistance Value Table

Table providing resistance values for temperature sensors at different Celsius and Fahrenheit temperatures.

Appendix 2 T5 Temperature Sensor Resistance Value Table

Table providing resistance values for the T5 sensor at different Celsius and Fahrenheit temperatures.

2. Compressor Checking

Procedure to measure the resistance value of compressor windings using a tester.

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