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Midea MSC-07CRN1 User Manual

Midea MSC-07CRN1
48 pages
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MSC-07CRN1; MSC-07HRN1
MSC-09CRN1; MSC-09HRN1
MSC-12CRN1; MSC-12HRN1
MSC-18CRN1; MSC-18HRN1

Table of Contents

Questions and Answers:

Midea MSC-07CRN1 Specifications

General IconGeneral
BrandMidea
ModelMSC-07CRN1
CategoryAir Conditioner
LanguageEnglish

Summary

Service manual

Precaution

Safety Precaution

Instructions to prevent injury to users and property damage during operation and installation.

Warning

Critical safety instructions regarding installation, electrical work, and product handling.

Function

Indoor Unit Functions

Details of operational modes and features for the indoor unit, including sensors and controls.

Outdoor Unit Functions

Details of operational features for the outdoor unit, such as fan systems and protection mechanisms.

Dimension

Indoor Unit Dimensions

Physical dimensions (W, H, L) for various indoor unit models.

Outdoor Unit Dimensions

Physical dimensions (W, H, L, L1, L2, L3) for various outdoor unit models.

Specification

Refrigerant Cycle Diagram

Cooling Only Operation

Diagram illustrating the refrigerant flow during cooling operation.

Heat Pump Mode Operation

Diagram illustrating the refrigerant flow during heat pump (heating) operation.

Operation Limits

Cooling Operation Limits

Charts showing acceptable operating temperature ranges for cooling mode.

Heating Operation Limits

Charts showing acceptable operating temperature ranges for heating mode.

Schematic and Wiring Diagrams

Schematic Diagram

Detailed electronic schematic diagram of the air conditioner's internal circuitry.

Wiring Diagrams

Wiring diagrams for different models (MSC-07CRN1, MSC-09CRN1, MSC-12CRN1, MSC-07HRN1, MSC-18CRN1).

Installation Details

Wrench Torque for Installation

Recommended torque values for tightening nuts during installation.

Cable Connection Specifications

Guidelines for selecting power cord gauge based on unit capacity.

Pipe Length and Elevation Limits

Specifications for pipe length, elevation difference, and additional refrigerant.

Air Purging of Piping and Indoor Unit

Procedure for removing air and moisture from the refrigerant piping system.

Pumping Down for Re-installation

Procedure to recover refrigerant into the outdoor unit before servicing or removal.

Re-air Purging for Re-installation

Procedure for purging air from the system after re-installation, involving refrigerant discharge.

Balance Refrigerant of Valves

Procedure for balancing refrigerant levels using the 2-way and 3-way valves.

Evacuation Procedure

Steps for creating a vacuum in the refrigerant system to remove non-condensable gases.

Gas Charging Procedure

Steps for charging the system with the correct amount of refrigerant.

Pressure Table

MSC-07CRN1 Pressure Data

Refrigerant pressure data for MSC-07CRN1 under various indoor and outdoor conditions.

MSC-07HRN1 Pressure Data

Refrigerant pressure data for MSC-07HRN1 under various indoor and outdoor conditions.

MSC-09CRN1 Pressure Data

Refrigerant pressure data for MSC-09CRN1 under various indoor and outdoor conditions.

MSC-09HRN1 Pressure Data

Refrigerant pressure data for MSC-09HRN1 under various indoor and outdoor conditions.

MSC-12CRN1 Pressure Data

Refrigerant pressure data for MSC-12CRN1 under various indoor and outdoor conditions.

MSC-12HRN1 Pressure Data

Refrigerant pressure data for MSC-12HRN1 under various indoor and outdoor conditions.

MSC-18CRN1 Pressure Data

Refrigerant pressure data for MSC-18CRN1 under various indoor and outdoor conditions.

MSC-18HRN1 Pressure Data

Refrigerant pressure data for MSC-18HRN1 under various indoor and outdoor conditions.

Capacity Table

MSC-07CRN1 Capacity Data

Cooling and heating capacity (kW) and input (kW) for MSC-07CRN1.

MSC-07HRN1 Capacity Data

Cooling and heating capacity (kW) and input (kW) for MSC-07HRN1.

MSC-09CRN1 Capacity Data

Cooling and heating capacity (kW) and input (kW) for MSC-09CRN1.

MSC-09HRN1 Capacity Data

Cooling and heating capacity (kW) and input (kW) for MSC-09HRN1.

MSC-12CRN1 Capacity Data

Cooling and heating capacity (kW) and input (kW) for MSC-12CRN1.

MSC-12HRN1 Capacity Data

Cooling and heating capacity (kW) and input (kW) for MSC-12HRN1.

MSC-18CRN1 Capacity Data

Cooling and heating capacity (kW) and input (kW) for MSC-18CRN1.

MSC-18HRN1 Capacity Data

Cooling and heating capacity (kW) and input (kW) for MSC-18HRN1.

Electronic Function

Function Symbols and Meaning

Explanation of symbols and abbreviations used in electronic functions and protections.

Operational Functions Overview

Summary of key functions like remote receiving, testing, LED display, and timers.

Protection Mechanisms

Details on compressor protection, sensor protection, and fan speed control.

Fan-Only Mode Operation

Description of fan speed settings and operation in fan-only mode.

Cooling Mode Operation

Explanation of 4-way valve action and compressor/fan control in cooling mode.

Dehumidifying Mode Operation

Details on 4-way valve action and compressor/fan control in dehumidifying mode.

Heating Mode Operation

Explanation of 4-way valve action and compressor/fan control in heating mode.

Defrosting Mode Operation

Conditions and timing for defrosting operation in heating mode.

Auto Mode Operation

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

Force Cooling Function

Procedure for activating and parameters of the forced cooling mode.

Sleep Mode Functionality

Details on the sleep mode for cooling, heating, and auto operations.

Auto Restart Function

How the unit restores previous settings after a power failure.

Turbo Mode Operation

Explanation of the turbo mode for faster cooling and its duration.

Plasma and Anion Features

Description of optional Plasma and Anion features and their usage.

Model and Parameters

Troubleshooting

Display Board Indicators

Explanation of indicators on the display board (Auto, Defrost, Temp, Operation, Timer).

Troubleshooting Guide

Table correlating failure phenomena with operation and timer lamp states.

Diagnostic Chart for No Operation

Flowchart to diagnose issues when the air conditioner does not operate.

Troubleshooting Resetting Phenomenon

Procedure for diagnosing frequent resetting during operation.

Operation/Timer Lamp Flashes (Off)

Troubleshooting steps for operation lamp flashing and timer lamp off.

Operation/Timer Lamp Flashes (On)

Troubleshooting steps for operation lamp flashing and timer lamp on.

Operation Lamp Off and Timer Lamp Flashes

Troubleshooting steps for operation lamp off and timer lamp flashes.

Operation Lamp On and Timer Lamp Flashes

Troubleshooting for operation lamp on and timer lamp flashes (EEROM error).

Operation/Timer Lamp Flashes (Both)

Troubleshooting for both operation and timer lamps flashing (over-zero signal detection fault).

Characteristic of Temperature Sensor

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