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Midea 9V SERIES User Manual

Midea 9V SERIES
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9VSAP-1010-A
SERVICE MANUAL
MIDEA AIRCONDITIONER
On-Off
SPLIT WALL-MOUNTED TYPE
9V SERIES
9220+9221
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Midea 9V SERIES Specifications

General IconGeneral
Power Supply220-240V, 50Hz
TypeSplit System
Cooling Capacity9000 BTU/h
Noise Level (Indoor)24 dB
Operating Temperature (Cooling)17-43°C
Operating Temperature (Heating)-7-24°C

Summary

1. Precautions and Warnings

1.1 Safety Precautions

Instructions to prevent injury and property damage during operation and service.

1.2 General Warnings

Important warnings regarding installation, electrical work, and general handling.

1.2 Warning Continued

Further Operational Warnings

Further warnings on installation, operation, power cable handling, and environmental factors.

Additional Handling Warnings

Additional warnings concerning telephone use, product noise, water entry, and maintenance.

Installation and Cleaning Warnings

Warnings on installation location, handling, cleaning, and avoiding damage.

Maintenance and Leak Hazard Warnings

Warnings on filter maintenance, battery handling, and potential hazards from leaks.

4. Refrigerant Cycle Diagrams

5. Wiring Diagrams

5.1 Indoor Unit Wiring (Cooling & Heating)

5.2 Outdoor Unit Wiring

6. Installation Details

6.4 Air Purging with Vacuum Pump

Air and Moisture Effects

Explains the process of removing air and moisture using a vacuum pump.

6.4 Air Purging Steps & Leak Check

Air Purging Procedure

Step-by-step guide for air purging using a vacuum pump and gas leak check.

6.5 Pumping Down (Re-installation)

Pumping Down Procedure

Detailed steps for safely pumping down the refrigerant system.

6.6 Re-air Purging (Re-installation)

Re-air Purging Procedure

Procedure for re-purging the system with refrigerant after re-installation.

6.7 Balance Refrigerant

Balancing Refrigerant with Valves

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

6.8 Evacuation

Evacuation Procedure

Detailed procedure for evacuating the refrigeration system to remove moisture and air.

6.9 Gas Charging

Refrigerant Charging Procedure

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

8. Main Protection & Operation Modes

8.3 Main Protection Systems

Details compressor restart delay, current protection, and fan speed control protection.

8.4.3.3 Defrosting Mode

8.4.3.3 Defrosting Mode Continued

9. Troubleshooting

Safety Precautions for Troubleshooting

Safety precautions regarding capacitors and electrical discharge during troubleshooting.

9.1 Indoor Unit Error Display

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

9.1 Indoor Unit Errors Continued

9.2 Diagnosis and Solutions Overview

Provides diagnostic steps and solutions for specific error codes.

9.2.1 E1 Error Diagnosis

Steps to diagnose and resolve the E1 EEPROM parameter error.

9.2 Error Diagnosis

9.2.2 E2 Zero-Crossing Error

Diagnostic steps and solution for the E2 Zero-Crossing Error.

9.2.3 E3 Fan Speed Out of Control

Diagnostic steps for the E3 indoor fan speed out of control error.

9.2.3 E3 Diagnosis Continued

Further E3 Diagnosis

Further diagnosis for E3 error, checking fan rotation and connections.

9.2 Error Diagnosis Continued

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