Midea MSMABU-09HRDN8-QRD0GW User Manual

No. Name CN# Meaning
1 CN1A
CN3 Earth: connect to Ground
CN1 N_in: connect to N-line (208-230V AC input)
CN2 L_in: connect to L-line (208-230V AC input)
CN16 S: connect to indoor unit communication
2 HEAT1 CN17 connect to compressor heater, 208-230V AC when is ON
3 4-WAY CN60 connect to 4 way valve, 208-230V AC when is ON.
4 HEAT2 CN15 connect to chassis heater, 208-230V AC when is ON
5 AC-FAN CN25 connect to AC fan
6 PMV CN31 connect to Electric Expansion Valve
7 TESTPORT CN6 used for testing
8 TP T4 T3 CN21/CN22
connect to pipe temp. sensor T3, ambient temp. sensor T4, exhaust
temp. sensor TP
9 DC-FAN CN7 connect to DC fan
10 FAN_IPM IPM 501 IPM for DC fan
11
W CN28 connect to compressor
V CN29 0V AC (standby)
U CN30 10-200V AC (running)
12 COMP_IPM IPM 301 IPM for compressor
Note: This section is for reference only. Please take practicality as standard.

Midea MSMABU-09HRDN8-QRD0GW Specifications

General

Refrigerant	R32
Inverter Technology	Yes
Power Supply	220-240V/50Hz/1Ph
Energy Efficiency Ratio (EER)	3.21
Coefficient of Performance (COP)	3.61
Cooling Capacity	9000 BTU

Summary

Safety Precautions

Precautions

General guidelines to prevent injury and damage during operation and maintenance.

Information servicing(For flammable materials)

Guidelines for safe handling of flammable refrigerants during service procedures.

Product Features

Safety Features

Details the built-in safety mechanisms and operational protections of the air conditioner.

Maintenance

First Time Installation Check

Refrigerant Recharge

Step-by-step instructions for adding the correct amount of refrigerant.

Indoor Unit Disassembly

Outdoor Unit Disassembly

Electrical Parts

Four-way valve

Compressor

Steps for safely removing the compressor from the outdoor unit.

Troubleshooting

Safety Caution

Essential warnings before performing any troubleshooting or maintenance procedures.

General Troubleshooting

Table of common error codes, display information, and their solutions.

Error Diagnosis and Troubleshooting Without Error Code

Common problems and their solutions when no specific error code is displayed.

Quick Maintenance by Error Code

Guides part replacement based on specific error codes for faster repairs.

Troubleshooting by Error Code

Detailed diagnosis and solutions for specific error codes (TS01-TS08).

Check Procedures

Guides for checking temperature sensors and compressor windings resistance.