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GD Midea Refrigeration Equipment MSG-18HRN2 User Manual

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GD Midea Refrigeration Equipment Co.,Ltd
SPLIT TYPE, HEAT PUMP AIR CONDITIONERS
Technical & service manual 2005
Glory Eco Series (50Hz) R407C Wall Mounted
[Models]
MSG-07CRN2
MSG-07HRN2
MSG-09CRN2
MSG-09HRN2
MSG-12CRN2
MSG-12HRN2
MSG-18CRN2
MSG-18HRN2
MSG-21CRN2
MSG-21HRN2
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GD Midea Refrigeration Equipment MSG-18HRN2 Specifications

General IconGeneral
BrandGD Midea Refrigeration Equipment
ModelMSG-18HRN2
CategoryAir Conditioner
LanguageEnglish

Summary

Features

Compact Design

Highlights the compact nature of the unit's design.

High Efficiency and Quiet Operation

Emphasizes the unit's energy efficiency and low noise levels.

Specifications

Dimensions

Indoor Unit Dimensions

Provides dimensional data for MSG-07/09 series indoor units.

Indoor Unit Dimensions (MSG-12)

Details dimensions for the MSG-12 series indoor units.

Indoor Unit Dimensions (MSG-18/21)

Outdoor Unit Dimensions (MSG-07/09)

Outdoor Unit Dimensions (MSG-12)

Outdoor Unit Dimensions (MSG-18)

Outdoor Unit Dimensions (MSG-21)

Refrigeration Cycle Diagrams

Cooling and Heating Cycle

Illustrates the refrigeration circuit for both cooling and heating modes.

Cooling Only Cycle

Depicts the refrigeration circuit specific to cooling-only operation.

Operation Limits

Cooling Operation Limits

Defines the permissible operating temperature ranges for cooling mode.

Heating Operation Limits

Specifies the acceptable operating temperature ranges for heating mode.

Wiring Diagrams

Cooling Only Wiring Schematics

Provides wiring diagrams for cooling-only operation.

MSG-07/09CRN2 Cooling Wiring

Detailed wiring for MSG-07CRN2 and MSG-09CRN2 cooling models.

MSG-12CRN2 Cooling Wiring

MSG-18/21CRN2 Cooling Wiring

Heating/Cooling Wiring

MSG-07/09HRN2 Heating/Cooling Wiring

Wiring details for MSG-07HRN2 and MSG-09HRN2 in heating/cooling.

MSG-12HRN2 Heating/Cooling Wiring

MSG-18/21HRN2 Heating/Cooling Wiring

Troubleshooting

Cooling Only Model Troubleshooting

Addresses common issues and solutions for cooling-only air conditioners.

Heat Pump Model Troubleshooting

Guides on diagnosing and resolving problems with heat pump models.

Electronic Functions

Electric Control Working Environment

Outlines the environmental and electrical conditions for control systems.

Symbols and Meanings

Defines symbols used throughout the manual for enhanced understanding.

Systematic Functions Overview

Lists and explains the various systematic functions of the air conditioner.

Compressor Protection Functions

Details specific protection mechanisms for the compressor, including delays.

Compressor and Fan Protections

Sensor and Fuse Protections

Covers protections related to sensors, fuses, and fan speed control.

Cross Zero Signal and Current Protections

Details warnings for cross-zero signals and current protection of the compressor.

Operating Modes Overview

Describes Fan-only and Cooling modes, including their specific actions.

Dehumidifying and Heating Modes

Dehumidifying Mode Operations

Details valve action, compressor/fan behavior, and protections in dehumidifying mode.

Heating Mode Operations

Explains valve, fan, and compressor actions and fan settings in heating mode.

Heating Mode Advanced Functions

Heating Mode Auto Fan Control

Describes automatic fan speed adjustments during heating based on temperature.

Heating Mode Evaporator Protection

Details high-temperature protection for the indoor evaporator during heating.

Defrosting Operation Details

Explains conditions and timing for defrosting cycles in heating mode.

Defrosting and Operation Mode Controls

Defrosting End Conditions and Actions

Outlines criteria for ending defrost and specific defrosting actions.

Automatic Operation Mode Selection

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

Forced Cooling and Auto Functions

Details forced cooling and forced auto modes, including operation and protection.

Operational Features and Parameters

Timer Function

Describes the timer function for controlling unit operation schedules.

Economic Running Mode

Explains the energy-saving function for cooling, heating, and auto modes.

Auto Restart Function

Details the unit's behavior and settings after a sudden power failure.

Models and Parameters

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