Midea MSG-18CR - User Manual

MSG-05CR
MSG-07CR; MSG-07HR
MSG-09CR; MSG-09HR
MSG-12CR; MSG-12HR
MSG-16CR; MSG-16HR
MSG-18CR; MSG-18HR
MSG-21CR; MSG-21HR

Summary

1. Precaution and Safety

1.1 Safety Precaution

Instructions to prevent injury, property damage, and harm from incorrect operation.

1.2 Warnings and Cautions

Installation warnings, electrical safety, handling, and general cautions for safe operation.

4. Model Specifications

Model Specifications (MSG-05 CR to MSG-07 HR)

Model Specifications (MSG-09 CR to MSG-12 CR)

Model Specifications (MSG-12 HR to MSG-16 HR)

Model Specifications (MSG-18 CR to MSG-21 CR)

Model Specifications (MSG-21 HR)

7. Schematic and Wiring Diagrams

7.1 Schematic Diagram

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

7.2.1 Cooling Mode Wiring (MSG-05 CR to MSG-12 CR)

Wiring diagram for cooling mode covering MSG-05CR, MSG-07CR, MSG-09CR, MSG-12CR.

7.2.1 Cooling Mode Wiring (MSG-16 CR)

Wiring diagram for MSG-16CR model in cooling mode.

7.2.1 Cooling Mode Wiring (MSG-18 CR, MSG-21 CR)

Wiring diagrams for MSG-18CR and MSG-21CR models in cooling mode.

7.2.2 Cooling Mode Wiring (MSG-07 HR to MSG-12 HR)

Wiring diagram for cooling mode covering MSG-07HR, MSG-09HR, MSG-12HR.

7.2.2 Cooling Mode Wiring (MSG-16 HR to MSG-21 HR)

Wiring diagrams for MSG-16HR, MSG-18HR, MSG-21HR models in cooling mode.

8. Installation Details

8.1 Wrench Torque Sheet for Installation

Specifies torque values for tightening pipe connections using different wrench types and sizes.

8.3 Pipe Length and Elevation

Details on maximum pipe length, elevation differences, and refrigerant charge based on unit capacity.

8.4 Air Purging of Piping and Indoor Unit

Step-by-step procedure for removing air and moisture from the refrigerant system.

8.5 Pumping Down (Re-installation)

Procedure for safely recovering refrigerant before moving or reinstalling the unit.

8.6 Re-air Purging (Re-installation)

Steps for re-purging air and moisture after re-installation, including refrigerant discharge.

8.7 Balance Refrigerant

Procedure to balance refrigerant charge in the system using the 2-way and 3-way valves.

8.8 Evacuation

Detailed steps for evacuating the refrigerant system using a vacuum pump to remove moisture.

8.9 Gas Charging

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

11. Model and Parameters

Model Parameters (MSG-05 CR to MSG-12 HR)

Model Parameters (MSG-16 CR to MSG-21 HR)

12. Troubleshooting

12.2 Failure Phenomena

12.3 Diagnostic Chart

12.4-12.9 Lamp Status Troubleshooting

Midea MSG-18CR Specifications