Midea MSR1-18HRN1-QC2 - User Manual

RSEU-A1-1206
SERVICE MANUAL
MIDEA AIRCONDITIONER
EUROPE MARKET
SPLIT WALL-MOUNTED TYPE
R ON-OFF SERIES

Summary

1. Precaution

1.1 Safety Precaution

Instructions to prevent injury to users and property damage.

1.2 Warning

Warnings related to installation and electrical work for safe operation.

4. Refrigerant Cycle Diagram

5. Wiring Diagram

5.1 Indoor Units

5.2 Outdoor Units

6. Installation details

6.1 Wrench torque sheet for installation

Specifies torque values for pipe connections during installation.

6.2 Connecting the cables

6.3 Pipe length and the elevation

6.4 Installation for the first time

Procedure for initial installation, including leak testing and evacuation.

6.5 Adding the refrigerant after running the system for many years

6.6 Re-installation while the indoor unit need to be repaired

6.7 Re-installation while the outdoor unit need to be repaired

9. Troubleshooting

9.1 Indoor Unit Error Display

Lists error codes displayed on the indoor unit and their causes.

Model-Specific Indoor Unit Error Code Tables

9.2.1 Indoor Fan Speed Out of Control Diagnosis

Troubleshooting steps for indoor fan speed issues.

9.2.2 Temperature Sensor Circuit Fault Diagnosis

Diagnosing and resolving temperature sensor circuit faults.

9.2.3 Over Current Protection Diagnosis

Troubleshooting steps for over current protection errors.

9.2.4 EEPROM Parameter Error Diagnosis

Steps to diagnose and fix EEPROM parameter errors.

9.2.5 Zero Crossing Detection Error Diagnosis

Troubleshooting steps for zero crossing detection errors.

9.2.6 Indoor;Outdoor Communication Error Diagnosis

Diagnosing and resolving communication errors between units.

Midea MSR1-18HRN1-QC2 Specifications