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Midea MSV1-09HRDN1-QC2A User Manual

Midea MSV1-09HRDN1-QC2A
41 pages
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SERVICE MANUAL
MIDEA AIRCONDITIONER
DC INVERTER
SPLIT WALL-MOUNTED TYPE
MSV1-09HRDN1-QC2(A)
MSV1-12HRDN1-QC2(A)
V1.2
Oct, 2007
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Midea MSV1-09HRDN1-QC2A Specifications

General IconGeneral
BrandMidea
ModelMSV1-09HRDN1-QC2A
CategoryAir Conditioner
LanguageEnglish

Summary

Precautionary Measures

Safety Precautions

General safety instructions to prevent injury and property damage during operation and installation.

Warnings and Cautions

Important warnings and cautions for installation and operation to prevent hazards and ensure proper use.

Unit Functions and Features

Indoor Unit Functions and Controls

Details on remote operation, sensors, fan control, and various indoor unit operational modes.

Outdoor Unit Features

Overview of key features and functions of the outdoor unit components like fan and cabinet.

Unit Dimensions

Indoor Unit Dimensions

Physical dimensions and measurements for the indoor air conditioning unit.

Outdoor Unit Dimensions

Physical dimensions and measurements for the outdoor air conditioning unit.

Technical Specifications

Refrigerant Cycle Diagram

Wiring Diagrams

Indoor Unit Wiring Diagram

Electrical wiring schematic detailing the connections within the indoor unit.

Outdoor Unit Wiring Diagram

Electrical wiring schematic detailing the connections within the outdoor unit.

Installation Details

7.1 Wrench Torque Specifications

Torque values for tightening fittings during installation.

7.2 Cable Connection Guidelines

Instructions for properly connecting electrical cables to the unit.

7.3 Pipe Length and Elevation Limits

Specifications for maximum refrigerant pipe length and elevation differences.

7.4 Air Purging Procedure

Procedure for removing air and moisture from the refrigerant piping.

7.5 Pumping Down Procedure

Steps for recovering refrigerant during unit re-installation.

7.6 Re-air Purging Procedure

Procedure for re-purging air after refrigerant system re-installation.

7.7 Balance Refrigerant in Valves

Procedure to balance refrigerant levels between the 2-way and 3-way valves.

7.8 System Evacuation

Procedure for creating a vacuum in the refrigerant circuit.

7.9 Refrigerant Gas Charging

Procedure for adding refrigerant to the system.

Operation Characteristics

MSV1-09HRDN1-QC2(A) Performance Data

Cooling and heating characteristics based on ambient temperature and piping length.

MSV1-12HRDN1-QC2(A) Performance Data

Cooling and heating characteristics based on ambient temperature and piping length.

Electronic Functions

9.1 Abbreviations and Glossary

Definitions of technical terms and abbreviations used in electronic functions.

9.2 Indoor Display Functions

Explanation of icons and indicators shown on the indoor unit's display.

9.3 Protection Mechanisms

Details on compressor protection, fan control, and error code explanations.

9.4 Fan-Only Mode Operation

Description of how to operate the unit in fan-only mode.

9.5 Cooling Mode Operation

Rules and features governing the cooling mode, including anti-freezing and current control.

9.6 Drying Mode Operation

Specific operational parameters for the drying mode.

9.7 Heating Mode Operation

Details on heating mode functions, fan control, and anti-cold-wind.

9.7.6 Defrosting Mode Conditions

Conditions that trigger the unit to enter defrosting mode.

9.7.7 Defrosting Action Sequence

Sequence and timing of operations during the defrosting cycle.

9.7.8 Rating Capacity Test

Procedure to activate and use the rating capacity test function.

9.7.9 Turbo Function in Heating

How the turbo function operates and affects performance in heating mode.

9.8 Auto Mode Functionality

How the unit automatically selects cooling, heating, or fan-only modes.

9.9 Forced Operation Modes

Details on forced auto and forced cooling operation procedures.

9.10 4-Way Valve Action

Function of the 4-way valve in various operating modes.

9.11 Outdoor Fan Speed Control

Operation of the outdoor fan, including two-speed functionality.

9.11 Outdoor Fan Action Modes

Describes outdoor fan behavior in cooling, drying, and heating modes.

9.12 Timer Functionality

Settings and operation of the unit's timer functions.

9.13 Sleep Mode Operation

How the sleep mode adjusts temperature and fan speed over time.

9.14 Auto-Restart Function

How the unit restores settings after a power interruption.

9.15 Automatic Panel Operation

Functionality of the automatic opening and closing of the front panel.

9.16 Ionizer (Clean Air) Function

How the ionizer feature cleans the air and its operational requirements.

9.17 Self-Clean Function

Procedure for activating and operating the self-clean function.

9.18 Follow Me Functionality

Operation of the 'Follow Me' feature using the remote sensor.

9.19 Optional Outdoor Heating Cable

Operation and control of the optional outdoor chassis heating cable.

Troubleshooting

Safety Precautions for Troubleshooting

Important safety warnings, especially regarding high voltage capacitors.

10.1 Indoor Unit Error Codes

List of error codes displayed on the indoor unit and their meanings.

10.2 Diagnosis and Solution Flowcharts

Step-by-step guides for diagnosing and resolving common unit errors.

10.3 Key Parts Checking

Procedures for checking resistance of key electrical components.

Compressor Resistance Check

Procedure for measuring the winding resistance of the compressor.

Fan Motor Resistance Checks

Procedures for measuring winding resistance of outdoor and indoor fan motors.

Step Motor Resistance Check

Procedure for measuring the winding resistance of the step motor.

10.3.5 Temperature Sensor Resistance Data

Reference data for temperature sensor resistance values at various temperatures.

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