Midea MS11M-09HRFN1-BW0W User Manual

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Revision C: 1707180001, Content updated.
Model Numbers:
MS11M-09HRFN1-BW0W MS11M-12HRFN1-BV0W CS11M-09HRFN1-MX0W(A) CS11M-12HRFN1-MV0W
CS11M-18HRFN1-MT0W CS11M-23HRFN1-MT0W MS11M-30HRFN1-MR0W MS11M-36HRFN1-MN10W
MS11M-09HRFN1-MZ65W(A) MS11M-09HRFN1-MZA5W(A) MS11M-12HRFN1-MZ10W
MS11M-12HRFN1-MZ50W(A) MS11M-17HRFN1-MW0W
Oasis MONO Split Hyper DC
Inverter Air Conditioner
SERVICE MANUAL Mono 3D
Table of Contents
1. Precaution
2. Part Names And Functions
3. Dimension
4. Refrigerant Cycle Diagram
5. Wiring Diagram
6. Installation Details
7. Operation Characteristics
8. Electronic Function
9. Troubleshooting
10. Disassembly Instructions

Midea MS11M-09HRFN1-BW0W Specifications

General

Brand	Midea
Model	MS11M-09HRFN1-BW0W
Category	Air Conditioner
Language	English

Summary

Precaution

Safety Precaution

Instructions to prevent injury and property damage.

Warning

General warnings related to installation and operation.

Caution

Notes on refrigerant leakage, drainage, and leveling.

Operational

Guidelines for proper operation and maintenance.

Part Names And Functions

Model Names of Indoor/Outdoor units

List of indoor and outdoor unit model numbers.

Part names of Indoor/Outdoor units

Diagram illustrating part names of indoor and outdoor units.

Dimension

Indoor Unit

Dimensions of various indoor unit models.

Outdoor Unit

Dimensions and specifications of outdoor units.

Refrigerant Cycle Diagram

Wiring Diagram

Installation Details

Wrench torque sheet for installation

Recommended torque values for installation fittings.

Connecting the cables

Guidelines for selecting power cord and connecting cables.

Pipe length and the elevation

Specifications for refrigerant pipe length and elevation limits.

Installation for the first time

Procedure for initial installation including leak testing and evacuation.

Adding the refrigerant after running the system for many years

Procedure for adding refrigerant to an existing system.

Re-installation while the indoor unit need to be repaired

Steps for re-installation after indoor unit repair.

Re-installation while the outdoor unit need to be repaired

Steps for re-installation after outdoor unit repair.

Operation Characteristics

Electronic Function

Abbreviation

Explanation of technical abbreviations used in the manual.

Display function

Explanation of indoor display board icons and indicators.

Main Protection

Details on various protection mechanisms for the unit.

Operation Modes and Functions

Description of various operating modes and their functions.

Point check function

Procedure for checking unit parameters using the remote.

Troubleshooting

Indoor Unit Error Display

List of error codes and their meanings for the indoor unit.

Outdoor unit error display

List of error codes and their meanings for the outdoor unit.

Diagnosis and Solution

EEPROM parameter error diagnosis and solution(E0/F4)

Troubleshooting steps for EEPROM parameter errors.

Indoor / outdoor unit's communication diagnosis and solution(E1)

Troubleshooting steps for communication errors.

Zero crossing detection error diagnosis and solution (E2)

Troubleshooting steps for zero crossing signal errors.

Fan speed has been out of control diagnosis and solution(E3)

Troubleshooting steps for fan speed control issues.

Open circuit or short circuit of temperature sensor diagnosis and solution(E5)

Troubleshooting steps for temperature sensor faults.

Refrigerant Leakage Detection diagnosis and solution (EC)

Troubleshooting steps for refrigerant leakage.

Overload current protection diagnosis and solution(F0)

Troubleshooting steps for overload current protection.

IPM malfunction or IGBT over-strong current protection diagnosis and solution(P0)

Troubleshooting steps for IPM/IGBT over-current faults.

Over voltage or too low voltage protection diagnosis and solution(P1)

Troubleshooting steps for voltage protection faults.

High temperature protection of IPM module diagnosis and solution(P2)

Troubleshooting steps for IPM high temperature protection.

Inverter compressor drive error diagnosis and solution(P4)

Troubleshooting steps for inverter compressor drive errors.

Low pressure protection diagnosis and solution(P6)

Troubleshooting steps for low pressure protection.

Main parts check

Temperature sensor checking

Procedure for checking temperature sensor resistance.

Compressor checking

Procedure for measuring compressor winding resistance.

IPM continuity check

Procedure for checking IPM continuity.

Indoor AC Fan Motor

Procedure for measuring indoor AC fan motor resistance.

Disassembly Instructions

Indoor unit

Step-by-step guide to disassemble the indoor unit.

Electrical parts

Procedure for removing electrical components from the indoor unit.

Evaporator

Procedure for removing the evaporator from the indoor unit.

Fan and motor

Procedure for removing the fan and motor from the indoor unit.

Outdoor unit

Step-by-step guide to disassemble the outdoor unit.