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Midea M-Thermal A Series User Manual

Midea M-Thermal A Series
112 pages
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M-Thermal A Series Split
Commercial Air Conditioners
R32
Service
Manual
Midea CAC
Confidential
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Midea M-Thermal A Series Specifications

General IconGeneral
SeriesM-Thermal A Series
RefrigerantR32
Power Supply220-240V, 50Hz
Dimensions (Indoor Unit)Varies by model
Weight (Indoor Unit)Varies by model
Dimensions (Outdoor Unit)Varies by model
Weight (Outdoor Unit)Varies by model

Summary

General Information

Unit Capacities

Details on the capacity range of outdoor units and compatible hydronic box models.

External Appearance

Visual overview of the outdoor unit and hydronic box appearance.

Component Layout and Refrigerant Circuits

Layout of Functional Components

Details on the layout of functional components in outdoor and hydronic units.

Piping Diagrams

Illustrates the piping diagrams for outdoor and hydronic units.

Refrigerant Flow Diagrams

Diagrams showing refrigerant flow during different operating modes.

Control

Stop Operation

Describes the reasons and conditions for system stop operations.

Standby Control

Details control logic for crankcase heater and water pump during standby.

Startup Control

Explains compressor startup delay and startup program sequences.

Normal Operation Control

Details component control during normal heating, cooling, and DHW operations.

Protection Control

Covers high/low pressure, temperature, current, and voltage protection mechanisms.

Special Control

Explains oil return, defrosting, force cooling, and fast DHW operations.

Role of Temperature Sensors in Control Functions

Illustrates the location and function of temperature sensors in system control.

Diagnosis and Troubleshooting

Electric Control Box Layout

Provides diagrams of the electric control box layouts for outdoor and hydronic units.

PCBs

Details the main PCBs for outdoor and hydronic systems, including connector labels.

Error Code Table

Lists error codes, serial numbers, content, and remarks for system faults.

Troubleshooting

Guides for diagnosing and resolving specific error codes including inverter and system faults.

Appendix to Part 4

Contains supplementary information relevant to Part 4 of the manual.

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