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Midea MSC-12HRDN1-QC6(E) User Manual

Midea MSC-12HRDN1-QC6(E)
44 pages
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SERVICE MANUAL
MIDEA AIRCONDITIONER
DC INVERTER
SPLIT WALL-MOUNTED TYPE
MSC-09HRDN1-QD0(E)
MSC-12HRDN1-QC6(E)
MSH-09HRDN1-QD0(E)
MSH-12HRDN1-QC6(E)
V1.2
Apr., 2007
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Midea MSC-12HRDN1-QC6(E) Specifications

General IconGeneral
Power Supply220-240V, 50Hz
TypeSplit
Cooling Capacity12000 BTU
Power Consumption (Heating)1080W
Operating Temperature (Cooling)32°C

Summary

Precaution

Safety and Warning Instructions

General safety precautions and specific warnings for installation and operation.

Installation and Operational Cautions

Important cautions for proper installation, usage, and maintenance of the unit.

Function Overview

Indoor Unit Functions

Details on various functions and features of the indoor unit.

Outdoor Unit Functions

Details on various functions and features of the outdoor unit.

Unit Dimensions

Indoor Unit Dimensions

Physical dimensions and drawings of the indoor unit.

Outdoor Unit Dimensions

Wiring Diagrams

Indoor Unit Wiring

Schematic diagram illustrating indoor unit electrical connections.

Outdoor Unit Wiring

Schematic diagram illustrating outdoor unit electrical connections.

Installation Procedures

Pipe, Cable, and Elevation Specs

Torque, cable, pipe length, and elevation guidelines for installation.

Air Purging Process

Procedure for purging air from the piping and indoor unit.

Pumping Down Procedure

Steps for pumping down refrigerant during re-installation.

Re-air Purging Procedure

Steps for re-purging air after re-installation.

Refrigerant Balancing

Procedure to balance refrigerant using 2-way and 3-way valves.

System Evacuation

Procedure for achieving vacuum in the refrigeration system.

Gas Charging Procedure

Steps for charging the correct amount of refrigerant.

Operation Characteristics

Model MSC-09HRDN1-QD0(E) Characteristics

Cooling and heating performance charts for the specified model.

Model MSC-12HRDN1-QC6(E) Characteristics

Cooling and heating performance charts for the specified model.

Model MSH-09HRDN1-QD0(E) Characteristics

Cooling and heating performance charts for the specified model.

Model MSH-12HRDN1-QC6(E) Characteristics

Cooling and heating performance charts for the specified model.

Electronic Functions

Abbreviations and Display Indicators

Definitions of abbreviations and explanation of display icons.

Display Control and Protections

LED display control, outdoor unit display, and protection features.

Cooling and Fan-Only Modes

Details on Fan-Only and Cooling mode operations.

Mode Operations and Protections

Details on rating test, turbo, fan rules, drying, and condenser protection.

Heating Mode Operations

Indoor fan actions, auto fan, and compressor frequency rules in heating mode.

Heating Controls and Defrosting

Outdoor current control, heat exchanger protection, and defrosting mode.

Defrosting Actions and Auto Mode

Defrosting sequence, rating test, turbo function, and auto mode.

Operational Modes and Timing

Forced operation, 4-way valve, fan speeds, timer, and sleep functions.

Auxiliary Functions

Auto-restart, ionizer, and outdoor heating cable functions.

Troubleshooting

Troubleshooting Safety Precautions

Important safety notes regarding electrical components during troubleshooting.

Unit Error Displays

Indoor and outdoor unit error codes and their meanings.

Diagnosis and Solution

E0, E1, E2 Error Diagnosis

Troubleshooting steps for EEPROM, communication, and zero-crossing errors.

E3, E5, E6, P0 Error Diagnosis

Troubleshooting for fan speed, sensor, and IGBT protection errors.

P1, P2, P4 Error Diagnosis

Troubleshooting for voltage, compressor top, and inverter drive errors.

Key Parts Checking

Component Resistance Checks

Procedures for checking resistance of compressor, fan motors, and step motor.

Temperature Sensor Data

Resistance-Temperature data for various sensors.

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