Midea MS9A-09HRN1-QC2 User Manual

LUNA ON-OFF SERIES
Service Manual 2014
9ASEU-B1-1401

Midea MS9A-09HRN1-QC2 Specifications

General

Brand	Midea
Model	MS9A-09HRN1-QC2
Category	Air Conditioner
Language	English

Summary

1. Precaution

1.1 Safety Precaution

Instructions to prevent injury to the user or other people and property damage.

1.2 Warning

Warnings regarding installation, electrical work, grounding, and product handling.

6. Installation details

6.1 Wrench torque sheet for installation

6.2 Connecting the cables

6.4 Installation for the first time

Air Purging by Refrigerant

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

Air Purging by the Refrigerant (Indoor Unit Repair)

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

Refrigerant Charging (Outdoor Unit Repair)

Final Checks After Re-installation

8.3 Main Protection

8.4 Operation Modes and Functions

Evaporator and Condenser Temperature Protection

Heating Mode and Anti-Cold Wind Function

Defrosting Mode Conditions (7k-18k Models)

Defrosting Mode Conditions (21k-24k Models)

Auto-Mode and High Evaporator Temp Protection

Drying Mode and Forced Operation Function

Timer and Sleep Function Modes

Auto-Restart and 8°C Heating

9. Troubleshooting

9.1 Indoor Unit Error Display

Lists error codes and their LED status for various indoor unit models.

Indoor Unit Error Display Details

9.2 Diagnosis and Solution

Fan Motor Diagnosis and Testing

Temperature Sensor Diagnosis and Solution

Over Current Protection Diagnosis and Solution

EEPROM and Zero Crossing Error Diagnosis

Communication Malfunction Diagnosis and Solution

Main Parts Check

1. Temperature Sensor Checking